void ProcessIO(void)
{
if((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1)) return;
/*if(USBGetDeviceState() == DETACHED_STATE) {
if(I2CCount > 0) {
ProcessCmd(OUTPacket);
I2CCount = 0;
}
}
else*/
if(!USBHandleBusy(USBGenericOutHandle)) {
//if( OUTPacket[1] != MASTER_ADDRESS )
// I2CRelay(OUTPacket, USBGEN_EP_SIZE);
//else
ProcessCmd(OUTPacket);
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM, (BYTE*)&OUTPacket, USBGEN_EP_SIZE);
}
if(WQI != WQX && !USBHandleBusy(USBGenericInHandle)) {
USBGenericInHandle = USBGenWrite(USBGEN_EP_NUM, (BYTE*)&INPacket[WQX*USB_RECORD_SIZE], USB_RECORD_SIZE);
WQX = (WQX+1) & 3;
}
} //end ProcessIO
static void processCy7c4xxFifo(void)
{
unsigned char c;
static unsigned char *cy7c4xx_buf_ptr = InDataPacket;
static unsigned char len = 0;
if (cy7c4xxPull(&c) != 0)
return;
if (len) {
*cy7c4xx_buf_ptr = c;
++cy7c4xx_buf_ptr;
--len;
if (len == 0) {
#if DEBUG
if (usbfifo_debug_operation.dump_fifo_out == 1) {
unsigned char l = cy7c4xx_buf_ptr-InDataPacket, i;
unsigned char b[12];
putrsUSART("FIFO IN: '");
for (i=0;i<l;++i) {
if (i != 0) {
while (BusyUSART());
putcUSART(' ');
}
sprintf(b, "%02x", InDataPacket[i]);
putsUSART(b);
}
sprintf(b, "' len=%3d\r\n", l);
putsUSART(b);
}
if (usbfifo_debug_operation.fifo_loopback == 1) {
unsigned char l = cy7c4xx_buf_ptr-InDataPacket, i; /* length of incoming packet _must_ not exceed the length of outgoing */
fifo9403aPush(l, 1);
for (i=0;i<l;++i)
fifo9403aPush(InDataPacket[i], 1);
}
#endif
/* FIXME: use real ping-pong */
while (USBHandleBusy(UsbInDataHandle)); // should not loop, anyway ...
UsbInDataHandle = USBGenWrite(USBGEN_DATA_EP_NUM, (BYTE*)&InDataPacket, cy7c4xx_buf_ptr-InDataPacket);
while (USBHandleBusy(UsbInDataHandle)); // have to wait here as full ping-pong is not implemented
// and thus we don't want data from FIFO override the data being sent here
cy7c4xx_buf_ptr = InDataPacket;
}
} else {
len = c;
}
}
/**********************************************************************************
Function:
BYTE getsUSBUSART(char *buffer, BYTE len)
Summary:
getsUSBUSART copies a string of BYTEs received through USB CDC Bulk OUT
endpoint to a user's specified location. It is a non-blocking function.
It does not wait for data if there is no data available. Instead it
returns '0' to notify the caller that there is no data available.
Description:
getsUSBUSART copies a string of BYTEs received through USB CDC Bulk OUT
endpoint to a user's specified location. It is a non-blocking function.
It does not wait for data if there is no data available. Instead it
returns '0' to notify the caller that there is no data available.
Typical Usage:
<code>
BYTE numBytes;
BYTE buffer[64]
numBytes = getsUSBUSART(buffer,sizeof(buffer)); //until the buffer is free.
if(numBytes \> 0)
{
//we received numBytes bytes of data and they are copied into
// the "buffer" variable. We can do something with the data
// here.
}
</code>
Conditions:
Value of input argument 'len' should be smaller than the maximum
endpoint size responsible for receiving bulk data from USB host for CDC
class. Input argument 'buffer' should point to a buffer area that is
bigger or equal to the size specified by 'len'.
Input:
buffer - Pointer to where received BYTEs are to be stored
len - The number of BYTEs expected.
**********************************************************************************/
BYTE getsUSBUSART(char *buffer, BYTE len)
{
cdc_rx_len = 0;
if(!USBHandleBusy(CDCDataOutHandle))
{
/*
* Adjust the expected number of BYTEs to equal
* the actual number of BYTEs received.
*/
if(len > USBHandleGetLength(CDCDataOutHandle))
len = USBHandleGetLength(CDCDataOutHandle);
/*
* Copy data from dual-ram buffer to user's buffer
*/
for(cdc_rx_len = 0; cdc_rx_len < len; cdc_rx_len++)
buffer[cdc_rx_len] = cdc_data_rx[cdc_rx_len];
/*
* Prepare dual-ram buffer for next OUT transaction
*/
CDCDataOutHandle = USBRxOnePacket(CDC_DATA_EP,(BYTE*)&cdc_data_rx,sizeof(cdc_data_rx));
}//end if
return cdc_rx_len;
}//end getsUSBUSART
void FlashDoTX(void)
{
BYTE SendNow;
USBMaskInterrupts();
if (!USBHandleBusy(FlashDataInHandle)) {
switch (FlashTxState) {
case FLASH_TX_COMPLETING:
FlashTxState = FLASH_TX_READY;
break;
case FLASH_TX_BUSY:
SendNow = FlashTxLen > sizeof(FlashTxBuffer) ? sizeof(FlashTxBuffer) : FlashTxLen;
FlashTxCBF((BYTE *) &FlashTxBuffer, SendNow);
FlashTxLen -= SendNow;
if(FlashTxLen == 0)
FlashTxState = FLASH_TX_COMPLETING;
FlashDataInHandle = USBTxOnePacket(NAND_TX_EP,(BYTE*)&FlashTxBuffer, SendNow);
break;
}
}
USBUnmaskInterrupts();
}
void CDCNotificationHandler(void)
{
//Check the DTS I/O pin and if a state change is detected, notify the
//USB host by sending a serial state notification element packet.
if(UART_DTS == USB_CDC_DSR_ACTIVE_LEVEL) //UART_DTS must be defined to be an I/O pin in the hardware profile to use the DTS feature (ex: "PORTXbits.RXY")
{
SerialStateBitmap.bits.DSR = 1;
}
else
{
SerialStateBitmap.bits.DSR = 0;
}
//If the state has changed, and the endpoint is available, send a packet to
//notify the hUSB host of the change.
if((SerialStateBitmap.byte != OldSerialStateBitmap.byte) && (!USBHandleBusy(CDCNotificationInHandle)))
{
//Copy the updated value into the USB packet buffer to send.
SerialStatePacket.SerialState.byte = SerialStateBitmap.byte;
//We don't need to write to the other bytes in the SerialStatePacket USB
//buffer, since they don't change and will always be the same as our
//initialized value.
//Send the packet over USB to the host.
CDCNotificationInHandle = USBTransferOnePacket(CDC_COMM_EP, IN_TO_HOST, (BYTE*)&SerialStatePacket, sizeof(SERIAL_STATE_NOTIFICATION));
//Save the old value, so we can detect changes later.
OldSerialStateBitmap.byte = SerialStateBitmap.byte;
}
}//void CDCNotificationHandler(void)
/********************************************************************
* モニタコマンド受信と実行.
********************************************************************
*/
void ProcessIO(void)
{
// 返答パケットが空であること、かつ、
// 処理対象の受信データがある.
if((ToPcRdy == 0) && (USBHandleBusy(USBGenericOutHandle)==0) ) {
//受信データがあれば、受信データを受け取る.
memcpy64((char*)&PacketFromPC,(char*)OUTPacket);
//次の読み込みを発行する.
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM,(BYTE*)&OUTPacket
,USBGEN_EP_SIZE);
PacketToPC.raw[0]=Cmd0; // CMD ECHOBACK
//コマンドに対応する処理を呼び出す.
if(Cmd0==HIDASP_PEEK) {cmd_peek();} // メモリー読み出し.
else if(Cmd0==HIDASP_POKE) {cmd_poke();} // メモリー書き込み.
else if(Cmd0==HIDASP_JMP) {cmd_exec();} // 実行.
else if(Cmd0==HIDASP_TEST) {cmd_echo();} // 接続テスト.
else if(Cmd0==HIDASP_GET_STRING){cmd_get_string();}
else if(Cmd0==HIDASP_USER_CMD) {cmd_user_cmd();}
else if(Cmd0==HIDASP_SET_MODE) {cmd_set_mode();}
}
// 必要なら、返答パケットをバルク転送(EP1)でホストPCに返却する.
if( ToPcRdy ) {
if(!USBHandleBusy(USBGenericInHandle)) {
memcpy64(INPacket,(char*)&PacketToPC);
USBGenericInHandle=USBGenWrite(USBGEN_EP_NUM,(BYTE*)INPacket,USBGEN_EP_SIZE);
ToPcRdy = 0;
if(poll_mode!=0) {
if( USBHandleBusy(USBGenericOutHandle) ) {//コマンドが来ない限り送り続ける.
make_report();
}
}
}
}
}
/**************************************************
* SWARMS Input PRECESSING
*
*
*
****************************************************/
void ProcessSWARMSInput(void){
char commandSuccess;
char SWARMSCommandID;
if((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1)) return;
// this is where I should insert the code for specific control
if(!USBHandleBusy(USBGenericOutHandle)) //Check if the endpoint has received any data from the host.
{
if(! canfitCommandInOutputCommandBuffer(5)){
//can't ensure reply -- just drop frame
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM,(BYTE*)&OUTPacket,USBGEN_EP_SIZE);
mLED_2_On();
mLED_1_Off()
return;
}
SWARMSCommandID = OUTPacket[0];
if(IS_VALID_COMMAND){
commandSuccess = writeInputCommand(OUTPacket);
switch(commandSuccess){
case fifoBufferStatusGood:
//report success
break;
case fifoBufferStatusFull:
//abort buffer full
// mLED_2_Toggle();
SWARMSMakeCommandSuccess(SWARMSCommandID, FAILURE, NULL); //TODO: ADD FLAGS
break;
case fifoBufferStatusBadInputOversize:
//abort buffer oversize input
SWARMSMakeCommandSuccess(SWARMSCommandID, FAILURE, NULL); //TODO: ADD FLAGS
break;
case fifoBufferStatusBadInput:
default:
//notify bad command
SWARMSMakeCommandSuccess(SWARMSCommandID, FAILURE, NULL); //TODO: ADD FLAGS
break;
}
}else{
SWARMSMakeCommandSuccess(SWARMSCommandID, FAILURE, NULL); //TODO: ADD FLAGS
}
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM,(BYTE*)&OUTPacket,USBGEN_EP_SIZE);
}
void FlashDataWrite()
{
BYTE *pData = (BYTE *) &FlashRxBuffer;
BYTE len;
if (gCommandProgress==0) {
gGlobalStatus = XNANDErase(gCmdArgA << 5);
gNextBlock = gCmdArgA << 5;
gWordsLeft = 0x84;
gBytesWritten = 0;
XNANDWriteStart();
gCommandProgress = 1;
}
if (USBHandleBusy(FlashDataOutHandle))
return;
len = USBHandleGetLength(FlashDataOutHandle);
len/= 4;
while (len) {
BYTE writeNow = len > gWordsLeft?gWordsLeft:len;
XNANDWriteProcess(pData, writeNow);
pData += writeNow*4;
len -= writeNow;
gWordsLeft -= writeNow;
if (gWordsLeft == 0) {
gGlobalStatus |= XNANDWriteExecute(gNextBlock);
gNextBlock++;
gWordsLeft = 0x84;
XNANDWriteStart();
gBytesWritten += 0x210;
}
}
FlashDataOutHandle = USBRxOnePacket(NAND_RX_EP,(BYTE*)&FlashRxBuffer,sizeof(FlashRxBuffer));
if (gBytesWritten == gCmdArgB)
gCurrentCommand = 0xFF;
}
//------------------------------PMP Handler-------------------------------------
void __ISR(_EXTERNAL_0_VECTOR, IPL6) GetSlaveData(void){
unsigned char pitch, vel;
PMPMasterRead();
pitch = mPMPMasterReadByte();
vel = mPMPMasterReadByte();
if(!USBHandleBusy(USBTxHandle))
{
midiData.Val = 0; //must set all unused values to 0
midiData.CableNumber = 0;
midiData.CodeIndexNumber = MIDI_CIN_NOTE_ON;
midiData.DATA_0 = 0x90; //Note on
midiData.DATA_1 = pitch + 60; //pitch
midiData.DATA_2 = vel; //velocity
USBTxHandle = USBTxOnePacket(MIDI_EP,(BYTE*)&midiData,4);
}
mINT0ClearIntFlag();
}
/******************************************************************************
Function:
void MSDProcessCommandMediaPresent(void)
Description:
This funtion processes a command received through the MSD
class driver
PreCondition:
None
Paramters:
None
Return Values:
BYTE - the current state of the MSDProcessCommand state
machine. The valid values are defined in MSD.h under the
MSDProcessCommand state machine declaration section
Remarks:
None
*****************************************************************************/
void MSDProcessCommandMediaPresent(void)
{
BYTE i;
switch(MSDCommandState)
{
case MSD_COMMAND_WAIT:
//copy the received command to the command state machine
MSDCommandState = gblCBW.CBWCB[0];
break;
case MSD_INQUIRY:
{
//copy the inquiry results from the defined ROM buffer
// into the USB buffer so that it can be transmitted
memcpypgm2ram(
(void *)&msd_buffer[0],
(ROM void*)&inq_resp,
sizeof(InquiryResponse)
);
msd_csw.dCSWDataResidue=sizeof(InquiryResponse);
msd_csw.bCSWStatus=0x00; // success
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
}
case MSD_READ_CAPACITY:
{
//If the host asked for the capacity of the device
DWORD_VAL sectorSize;
DWORD_VAL capacity;
msd_csw.bCSWStatus=0x00; // success
//get the information from the physical media
capacity.Val = LUNReadCapacity();
sectorSize.Val = LUNReadSectorSize();
//copy the data to the buffer
msd_buffer[0]=capacity.v[3];
msd_buffer[1]=capacity.v[2];
msd_buffer[2]=capacity.v[1];
msd_buffer[3]=capacity.v[0];
msd_buffer[4]=sectorSize.v[3];
msd_buffer[5]=sectorSize.v[2];
msd_buffer[6]=sectorSize.v[1];
msd_buffer[7]=sectorSize.v[0];
msd_csw.dCSWDataResidue=0x08; // size of response
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
}
case MSD_READ_10:
if(MSDReadHandler() == MSD_READ10_WAIT)
{
MSDCommandState = MSD_COMMAND_WAIT;
}
break;
case MSD_WRITE_10:
if(MSDWriteHandler() == MSD_WRITE10_WAIT)
{
MSDCommandState = MSD_COMMAND_WAIT;
}
break;
case MSD_REQUEST_SENSE:
for(i=0;i<sizeof(RequestSenseResponse);i++)
{
msd_buffer[i]=gblSenseData[LUN_INDEX]._byte[i];
}
msd_csw.dCSWDataResidue=sizeof(RequestSenseResponse);
msd_csw.bCSWStatus=0x0; // success
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
case MSD_MODE_SENSE:
msd_buffer[0]=0x02;
msd_buffer[1]=0x00;
msd_buffer[2]=0x00;
msd_buffer[3]=0x00;
msd_csw.bCSWStatus=0x0;
msd_csw.dCSWDataResidue=0x04;
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
case MSD_PREVENT_ALLOW_MEDIUM_REMOVAL:
if(LUNMediaDetect())
{
msd_csw.bCSWStatus=0x00;
msd_csw.dCSWDataResidue=0x00;
}
else
{
gblSenseData[LUN_INDEX].SenseKey=S_NOT_READY;
gblSenseData[LUN_INDEX].ASC=ASC_MEDIUM_NOT_PRESENT;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_MEDIUM_NOT_PRESENT;
msd_csw.bCSWStatus=0x01;
}
MSDCommandState = MSD_COMMAND_WAIT;
break;
case MSD_TEST_UNIT_READY:
if((gblSenseData[LUN_INDEX].SenseKey==S_UNIT_ATTENTION) && (msd_csw.bCSWStatus==1))
{
MSDCommandState = MSD_COMMAND_WAIT;
}
else
{
ResetSenseData();
msd_csw.dCSWDataResidue=0x00;
MSDCommandState = MSD_COMMAND_WAIT;
}
break;
case MSD_VERIFY:
//Fall through to STOP_START
case MSD_STOP_START:
msd_csw.bCSWStatus=0x0;
msd_csw.dCSWDataResidue=0x00;
MSDCommandState = MSD_COMMAND_WAIT;
break;
case MSD_COMMAND_RESPONSE:
if(USBHandleBusy(USBMSDInHandle) == FALSE)
{
USBMSDInHandle = USBTxOnePacket(MSD_DATA_IN_EP,(BYTE*)&msd_buffer[0],msd_csw.dCSWDataResidue);
MSDCommandState = MSD_COMMAND_WAIT;
msd_csw.dCSWDataResidue=0;
}
break;
case MSD_COMMAND_ERROR:
default:
ResetSenseData();
gblSenseData[LUN_INDEX].SenseKey=S_ILLEGAL_REQUEST;
gblSenseData[LUN_INDEX].ASC=ASC_INVALID_COMMAND_OPCODE;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_INVALID_COMMAND_OPCODE;
msd_csw.bCSWStatus=0x01;
msd_csw.dCSWDataResidue=0x00;
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
} // end switch
}
/******************************************************************************
Function:
void MSDProcessCommandMediaAbsent(void)
Description:
This funtion processes a command received through the MSD
class driver
PreCondition:
None
Parameters:
None
Return Values:
BYTE - the current state of the MSDProcessCommand state
machine. The valid values are defined in MSD.h under the
MSDProcessCommand state machine declaration section
Remarks:
None
*****************************************************************************/
void MSDProcessCommandMediaAbsent(void)
{
BYTE i;
switch(MSDCommandState)
{
case MSD_REQUEST_SENSE:
{
ResetSenseData();
gblSenseData[LUN_INDEX].SenseKey=S_NOT_READY;
gblSenseData[LUN_INDEX].ASC=ASC_MEDIUM_NOT_PRESENT;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_MEDIUM_NOT_PRESENT;
for(i=0;i<sizeof(RequestSenseResponse);i++)
{
msd_buffer[i]=gblSenseData[LUN_INDEX]._byte[i];
}
msd_csw.dCSWDataResidue=sizeof(RequestSenseResponse);
msd_csw.bCSWStatus=0x0; // success
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
}
case MSD_PREVENT_ALLOW_MEDIUM_REMOVAL:
case MSD_TEST_UNIT_READY:
{
msd_csw.bCSWStatus=0x01;
MSDCommandState = MSD_COMMAND_WAIT;
break;
}
case MSD_INQUIRY:
{
memcpypgm2ram(
(void *)&msd_buffer[0],
(ROM void*)&inq_resp,
sizeof(InquiryResponse)
);
msd_csw.dCSWDataResidue=sizeof(InquiryResponse);
msd_csw.bCSWStatus=0x00; // success
MSDCommandState = MSD_COMMAND_RESPONSE;
break;
}
case MSD_COMMAND_WAIT:
{
MSDCommandState = gblCBW.CBWCB[0];
break;
}
case MSD_COMMAND_RESPONSE:
if(USBHandleBusy(USBMSDInHandle) == FALSE)
{
USBMSDInHandle = USBTxOnePacket(MSD_DATA_IN_EP,(BYTE*)&msd_buffer[0],msd_csw.dCSWDataResidue);
MSDCommandState = MSD_COMMAND_WAIT;
msd_csw.dCSWDataResidue=0;
}
break;
default:
{
//Stall MSD endpoint IN
USBStallEndpoint(MSD_DATA_IN_EP,1);
msd_csw.bCSWStatus=0x01;
MSDCommandState = MSD_COMMAND_WAIT;
break;
}
}
}
BOOL ChipKITUSBHandleBusy(USB_HANDLE handle)
{
return(USBHandleBusy(handle));
}
/*********************************************************************************
Function:
BYTE MSDTasks(void)
Summary:
This function runs the MSD class state machines and all of its
sub-systems. This function should be called periodically once the
device is in the configured state in order to keep the MSD state
machine going.
Description:
This function runs the MSD class state machines and all of its
sub-systems. This function should be called periodically once the
device is in the configured state in order to keep the MSD state
machine going.
Typical Usage:
<code>
void main(void)
{
USBDeviceInit();
while(1)
{
USBDeviceTasks();
if((USBGetDeviceState() \< CONFIGURED_STATE) ||
(USBIsDeviceSuspended() == TRUE))
{
//Either the device is not configured or we are suspended
// so we don't want to do execute any application code
continue; //go back to the top of the while loop
}
else
{
//Keep the MSD state machine going
MSDTasks();
//Run application code.
UserApplication();
}
}
}
</code>
Conditions:
None
Return Values:
BYTE - the current state of the MSD state machine the valid values are
defined in MSD.h under the MSDTasks state machine declaration section.
The possible values are the following\:
* MSD_WAIT
* MSD_DATA_IN
* MSD_DATA_OUT
* MSD_SEND_CSW
Remarks:
None
*********************************************************************************/
BYTE MSDTasks(void)
{
BYTE i;
switch(MSD_State)
{
case MSD_WAIT:
{
//If the MSD state machine is waiting for something to happen
if(!USBHandleBusy(USBMSDOutHandle))
{
//If we received an OUT packet from the host
// then copy the data from the buffer to a global
// buffer so that we can keep the information but
// reuse the buffer
gblCBW.dCBWSignature=msd_cbw.dCBWSignature;
gblCBW.dCBWTag=msd_cbw.dCBWTag;
gblCBW.dCBWDataTransferLength=msd_cbw.dCBWDataTransferLength;
gblCBW.bCBWFlags=msd_cbw.bCBWFlags;
gblCBW.bCBWLUN=msd_cbw.bCBWLUN;
gblCBW.bCBWCBLength=msd_cbw.bCBWCBLength; // 3 MSB are zero
for (i=0;i<msd_cbw.bCBWCBLength;i++)
{
gblCBW.CBWCB[i]=msd_cbw.CBWCB[i];
}
gblCBWLength=USBHandleGetLength(USBMSDOutHandle);
//If this CBW is valid?
if ((gblCBWLength==MSD_CBW_SIZE)&&(gblCBW.dCBWSignature==0x43425355))
{
//Is this CBW meaningful?
if((gblCBW.bCBWLUN<=0x0f)
&&(gblCBW.bCBWCBLength<=0x10)
&&(gblCBW.bCBWCBLength>=0x01)
&&(gblCBW.bCBWFlags==0x00||gblCBW.bCBWFlags==0x80))
{
//Prepare the CSW to be sent
msd_csw.dCSWTag=gblCBW.dCBWTag;
msd_csw.dCSWSignature=0x53425355;
/* If direction is device to host*/
if (gblCBW.bCBWFlags==0x80)
{
MSD_State=MSD_DATA_IN;
}
else if (gblCBW.bCBWFlags==0x00)
{
/* If direction is host to device*/
/* prepare to read data in msd_buffer */
MSD_State=MSD_DATA_OUT;
}
}
}
}
break;
}
case MSD_DATA_IN:
if(MSDProcessCommand() == MSD_COMMAND_WAIT)
{
// Done processing the command, send the status
MSD_State = MSD_SEND_CSW;
}
break;
case MSD_DATA_OUT:
if(MSDProcessCommand() == MSD_COMMAND_WAIT)
{
/* Finished receiving the data prepare and send the status */
if ((msd_csw.bCSWStatus==0x00)&&(msd_csw.dCSWDataResidue!=0))
{
msd_csw.bCSWStatus=0x02;
}
MSD_State = MSD_SEND_CSW;
}
break;
case MSD_SEND_CSW:
if(USBHandleBusy(USBMSDInHandle))
{
//The TX buffer is not ready to send the status yet.
break;
}
USBMSDInHandle = USBTxOnePacket(MSD_DATA_IN_EP,(BYTE*)&msd_csw,MSD_CSW_SIZE);
//Get ready for next command to come in
if(!USBHandleBusy(USBMSDOutHandle))
{
USBMSDOutHandle = USBRxOnePacket(MSD_DATA_OUT_EP,(BYTE*)&msd_cbw,sizeof(msd_cbw));
}
MSD_State=MSD_WAIT;
break;
}
return MSD_State;
}
BOOL hidHandleBusy(void)
{
return USBHandleBusy(hidRxHandle);
}
void ProcessCCID()
{
static WORD CardPresentVerifyCounter = 0;
static BOOL CardON = FALSE;
BYTE i;
BYTE ppsData[3];
////// Detect Card Insertion and removal and transmit /////////////
////// the status on interrupt endpoint /////////////
if( !CardON && SC_CardPresent() )
{
if( CardPresentVerifyCounter > 100 )
{
if(!USBHandleBusy(usbCcidInterruptInHandle))
{
usbCcidBulkInEndpoint[0] = 0x50; //Msg Type
usbCcidBulkInEndpoint[1] = 3; //card present, change
usbCcidInterruptInHandle = USBTxOnePacket(USB_EP_INT_IN, (BYTE*)&usbCcidBulkInEndpoint, 2);
CardON = TRUE;
}
}
else
CardPresentVerifyCounter++;
}
else if( CardON && !SC_CardPresent() )
{
SC_Shutdown(); //reset SC_Lib states and turn off hardware
if(!USBHandleBusy(usbCcidInterruptInHandle))
{
usbCcidBulkInEndpoint[0] = 0x50; //Msg Type
usbCcidBulkInEndpoint[1] = 2; //card not present, change
usbCcidInterruptInHandle = USBTxOnePacket(USB_EP_INT_IN, (BYTE*)&usbCcidBulkInEndpoint, 2);
CardON = FALSE;
}
}
else
CardPresentVerifyCounter = 0;
///// Process commands received on Bulk Endoint //////////////
if(!USBHandleBusy(usbCcidBulkOutHandle)) //Check if the endpoint has received any data from the host.
{
union SLOT_STATUS card_st;
BYTE ErrCode;
static WORD TransactionCount=0;
card_st.Val = 0;
ErrCode = 0; //clear error code
if(usbCcidOutPacketTrack == USB_CCID_BULK_OUT_FIRST_PACKET)
{
memset( pUsbCcidApdu->CCID_BulkOutBuffer, 0, sizeof(pUsbCcidApdu->CCID_BulkOutBuffer)) ;
// copy the length from the CCID packet to a 32 Bit Variable.
usbCcidOutPacketLength.byte.LB = usbCcidBulkOutEndpoint[1];
usbCcidOutPacketLength.byte.HB = usbCcidBulkOutEndpoint[2];
usbCcidOutPacketLength.byte.UB = usbCcidBulkOutEndpoint[3];
usbCcidOutPacketLength.byte.MB = usbCcidBulkOutEndpoint[4];
usbCcidNoOfBytesToReceive = usbCcidOutPacketLength.Val + 10; // CCID command overhead is 10 bytes.
for (i =0;i < USB_EP_SIZE;i++) // Copy received data from host to a temperary buffer
pUsbCcidApdu->CCID_BulkOutBuffer[i] = usbCcidBulkOutEndpoint[i];
if (usbCcidNoOfBytesToReceive > USB_EP_SIZE) // We still have more USB transactions to receive from host
{
usbCcidNoOfBytesToReceive = usbCcidNoOfBytesToReceive - USB_EP_SIZE;
usbCcidOutPacketTrack = USB_CCID_BULK_OUT_SUBSEQUENT_PACKET;
usbCcidBulkOutHandle = USBRxOnePacket(USB_EP_BULK_OUT,(BYTE*)&usbCcidBulkOutEndpoint,USB_EP_SIZE);
return;
}
else // We have received everything from the host.
{
usbCcidNoOfBytesToReceive = 0;
usbCcidOutPacketTrack = USB_CCID_BULK_OUT_FIRST_PACKET;
TransactionCount =0;
}
}
else if (usbCcidOutPacketTrack == USB_CCID_BULK_OUT_SUBSEQUENT_PACKET)
{
// copy data to the APDU[];
TransactionCount++;
if (usbCcidNoOfBytesToReceive > USB_EP_SIZE)
{
for (i =0 ; i< USB_EP_SIZE; i++ )
pUsbCcidApdu->CCID_BulkOutBuffer[USB_EP_SIZE * TransactionCount + i] = usbCcidBulkOutEndpoint[i];
}
else
{
for (i =0 ; i< usbCcidNoOfBytesToReceive; i++ )
pUsbCcidApdu->CCID_BulkOutBuffer[USB_EP_SIZE*TransactionCount+i] = usbCcidBulkOutEndpoint[i];
}
if (usbCcidNoOfBytesToReceive > USB_EP_SIZE) // We still have more bytes to receive from host
{
usbCcidNoOfBytesToReceive = usbCcidNoOfBytesToReceive - USB_EP_SIZE;
usbCcidOutPacketTrack = USB_CCID_BULK_OUT_SUBSEQUENT_PACKET;
usbCcidBulkOutHandle = USBRxOnePacket(USB_EP_BULK_OUT,(BYTE*)&usbCcidBulkOutEndpoint,USB_EP_SIZE);
return;
}
else // We have received everything from the host.
{
usbCcidNoOfBytesToReceive = 0;
TransactionCount =0;
usbCcidOutPacketTrack = USB_CCID_BULK_OUT_FIRST_PACKET;
}
}
switch(pUsbCcidApdu->CCID_BulkOutBuffer[0]) //Data arrived, check what kind of command might be in the packet of data.
{
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_ICC_POWER_ON:
{
if( !SC_CardPresent() ) //if Card is not present
{
//Card not present. send error reply
card_st.Val = 0;
card_st.ICC_Status = GetCardStatus();
card_st.CmdStatus = 1; //Command Failed Code
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_DATA_BLOCK; //Msg Type
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = USB_CCID_ICC_MUTE; //bError ICC_MUTE
pUsbCcidApdu->CCID_BulkInBuffer[9] = 0;
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, 10 );
}
else //else if Card is Present
{
SC_Initialize();
if( SC_PowerOnATR() ) //Get ATR
{
// SC_DoPPS(); //switch baud rate based on ATR setting
if (SC_T0ProtocolType() && !SC_T1ProtocolType())
usbCcidProtocolNum = USB_CCID_T0_PROTOCOL;
else if (!SC_T0ProtocolType() && SC_T1ProtocolType())
usbCcidProtocolNum = USB_CCID_T1_PROTOCOL;
card_st.Val = 0;
card_st.ICC_Status = GetCardStatus();
card_st.CmdStatus = 0; //processed without error
// ATR success
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_DATA_BLOCK; //Msg Type
pUsbCcidApdu->CCID_BulkInBuffer[1] = scATRLength;
pUsbCcidApdu->CCID_BulkInBuffer[2] = 0;
pUsbCcidApdu->CCID_BulkInBuffer[3] = usbCcidBulkInEndpoint[4] = 0;
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = 0; //bError
pUsbCcidApdu->CCID_BulkInBuffer[9] = 0; //no extended APDU support
for (i = 0; i < scATRLength; i++)
pUsbCcidApdu->CCID_BulkInBuffer[10 + i] = scCardATR[i];
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, scATRLength+10 );
}
else // ATR Failed
{
// Reply with Error response
card_st.ICC_Status = 1; // from CCID Rev 1.1 page 28. Error codes for Hardware Error
card_st.CmdStatus = 1; // Command Failed
ErrCode = USB_CCID_HW_ERROR; // Hardware Error
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_DATA_BLOCK; //Msg Type
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = ErrCode; //bError
pUsbCcidApdu->CCID_BulkInBuffer[9] = 0;
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, 10 );
}// End of else ATR Failed
}// End of else - card is present
}// End case PC_to_RDR_IccPowerOn:
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_ICC_POWER_OFF:
if( pUsbCcidApdu->CCID_BulkOutBuffer[5] == 0 ) // must be slot 0 (for 1 slot reader)
{
//Do power off sequence if required
SC_Shutdown();
card_st.ICC_Status = GetCardStatus(); // bStatus - 0 Card Present and active,
// 1 Card Present and inactive,
// 2 Not Present
}
else //slot # out of range
{
card_st.ICC_Status = 2; // from CCID Rev 1.1 page 28. Error codes for bad slot umber
card_st.CmdStatus = 1; // Command Failed
ErrCode = 5; // bError Slot Does not exist
}
pUsbCcidApdu->CCID_BulkInBuffer[0] = 0x81; //Msg Type
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = ErrCode; //bError
pUsbCcidApdu->CCID_BulkInBuffer[9] = (SC_GetCardState()==SC_STATE_CARD_ACTIVE)?0:1; //Clock Status: 0 Running, 1 Stopped L, 2 Stopped H
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, 10 );
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_GET_SLOT_STATUS:
if( pUsbCcidApdu->CCID_BulkOutBuffer[5] == 0 ) // must be slot 0 (for 1 slot reader)
{
card_st.ICC_Status = GetCardStatus(); // bStatus - 0 Card Present and active,
// 1 Card Present and inactive,
// 2 Not Present
}
else //slot # out of range
{
card_st.ICC_Status = 2; // from CCID Rev 1.1 page 28. Error codes for bad slot umber
card_st.CmdStatus = 1; // Command Failed
ErrCode = 5; // bError Slot Does not exist
}
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_SLOT_STATUS; //Msg Type
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = ErrCode; //bError
pUsbCcidApdu->CCID_BulkInBuffer[9] = (SC_GetCardState()==SC_STATE_CARD_ACTIVE)?0:1; //Clock Status: 0 Running, 1 Stopped L, 2 Stopped H
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, 10 );
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_XFR_BLOCK:
UsbCcidPcToRdrXfrBlock();
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_GET_PARAMETERS:
UsbCcidSendRdrToPcParameters();
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_RESET_PARAMETERS :
UsbCcidSendRdrToPcParameters();
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_SET_PARAMETERS :
if (SC_GetCardState() == SC_STATE_CARD_ACTIVE)
{
if (SC_T0ProtocolType() && SC_T1ProtocolType())
{
usbCcidProtocolNum = pUsbCcidApdu->CCID_BulkOutBuffer[7];
}
ppsData[0] = 0xFF;
if (usbCcidProtocolNum == USB_CCID_T0_PROTOCOL) //if T=0 Protocol
{
//pUsbCcidApdu->CCID_BulkOutBuffer[10]; //Read FI Index
//pUsbCcidApdu->CCID_BulkOutBuffer[11]; //bmTCCKST0
//pUsbCcidApdu->CCID_BulkOutBuffer[12]; // Read Guard Time
//pUsbCcidApdu->CCID_BulkOutBuffer[13]; // Read WI
ppsData[1] = 0x00;
}
else if (usbCcidProtocolNum == USB_CCID_T1_PROTOCOL)
{
ppsData[1] = 0x01;
//pUsbCcidApdu->CCID_BulkOutBuffer[10]; //Read FI Index
//pUsbCcidApdu->CCID_BulkOutBuffer[11]; //bmTCCKST1
//pUsbCcidApdu->CCID_BulkOutBuffer[12]; // Guard Time
//pUsbCcidApdu->CCID_BulkOutBuffer[13]; // bmWaitingIntegersT1
//pUsbCcidApdu->CCID_BulkOutBuffer[14]; // bClockStop
//pUsbCcidApdu->CCID_BulkOutBuffer[15]; //bIFSC
//pUsbCcidApdu->CCID_BulkOutBuffer[16]; //bNadValue
}
ppsData[2] = ppsData[0] ^ ppsData[1];
if (SC_T0ProtocolType() && SC_T1ProtocolType())
{
if (!SC_DoPPS(ppsData))
{
SC_Shutdown();
}
}
ccid_clockstatus = pUsbCcidApdu->CCID_BulkOutBuffer[14]; // Read Clock Stop Status
}
UsbCcidSendRdrToPcParameters();
break;
#ifndef LOW_PIN_COUNT_USB_DEVELOPMENT_KIT
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_ESCAPE:
// This Command is not supoprted
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_ESCAPE;
UsbCcidCommandNotSupported();
break;
#endif
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_ICC_CLOCK:
if( pUsbCcidApdu->CCID_BulkOutBuffer[5] == 0 ) // must be slot 0 (for 1 slot reader)
{
//Do power off sequence if required
if (pUsbCcidApdu->CCID_BulkOutBuffer[7] == 0)
{
USB_CCID_RestartClock();//Restart Clock
}
else if (pUsbCcidApdu->CCID_BulkOutBuffer[7] == 1)
{
if (ccid_clockstatus == 1)
{
USB_CCID_StopClockWithPinLow(); // Stop with Clock signal Low
}
else if (ccid_clockstatus == 2)
{
USB_CCID_StopClockWithPinHigh();// Stop with Clock signal High
}
else if (ccid_clockstatus == 3)
{
USB_CCID_StopClockWithPinLow(); // Stop with Clock either High or Low
}
}
card_st.ICC_Status = GetCardStatus(); // bStatus - 0 Card Present and active,
// 1 Card Present and inactive,
// 2 Not Present
}
else //slot # out of range
{
card_st.ICC_Status = 2; // from CCID Rev 1.1 page 28. Error codes for bad slot umber
card_st.CmdStatus = 1; // Command Failed
ErrCode = 5; // bError Slot Does not exist
}
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_SLOT_STATUS; //Msg Type
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = ErrCode; //bError
pUsbCcidApdu->CCID_BulkInBuffer[9] = (SC_GetCardState()==SC_STATE_CARD_ACTIVE)?0:1; //Clock Status: 0 Running, 1 Stopped L, 2 Stopped H
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, 10 );
break;
////////////////////////////////////////////////////////////////////////////////////
#ifndef LOW_PIN_COUNT_USB_DEVELOPMENT_KIT
case USB_CCID_PC_TO_RDR_SECURE :
// This Command is not supoprted
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_DATA_BLOCK;
UsbCcidCommandNotSupported();
break;
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_MECHANICAL:
// This Command is not supoprted
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_SLOT_STATUS;
UsbCcidCommandNotSupported();
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_ABORT:
// This Command is not supoprted
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_SLOT_STATUS;
UsbCcidCommandNotSupported();
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_SET_DATA_RATE_AND_CLOCK_FREQUENCY:
// This Command is not supoprted
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_DATA_RATE_AND_CLOCK_FREQUENCY;
UsbCcidCommandNotSupported();
////////////////////////////////////////////////////////////////////////////////////
case USB_CCID_PC_TO_RDR_T0APDU :
// This Command is not supoprted
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_SLOT_STATUS;
UsbCcidCommandNotSupported();
break;
#endif
default:
pUsbCcidApdu->CCID_BulkInBuffer[0] = USB_CCID_RDR_TO_PC_SLOT_STATUS;
#ifndef LOW_PIN_COUNT_USB_DEVELOPMENT_KIT
UsbCcidCommandNotSupported();
#else
card_st.Val = 0;
card_st.ICC_Status = GetCardStatus();
card_st.CmdStatus = 1; //Command Failed Code
pUsbCcidApdu->CCID_BulkInBuffer[7] = card_st.Val; //bStatus
pUsbCcidApdu->CCID_BulkInBuffer[8] = USB_CCID_CMD_NOT_SUPPORTED; //bError, Command not supported
USBCCIDSendDataToHost(pUsbCcidApdu->CCID_BulkInBuffer, 10 );
#endif
break;
}
usbCcidBulkOutHandle = USBRxOnePacket(USB_EP_BULK_OUT,(BYTE*)&usbCcidBulkOutEndpoint,USB_EP_SIZE);
}
}
/*********************************************************************
* Function: void APP_DeviceVendorThroughputTestTasks(void);
*
* Overview: keeps the demo running.
*
* PreCondition: Demo is initialiized.
*
* Input: None
*
* Output: None
*
********************************************************************/
void APP_DeviceVendorThroughputTestTasks()
{
//User Application USB tasks below.
//Note: The user application should not begin attempting to read/write over the USB
//until after the device has been fully enumerated. After the device is fully
//enumerated, the USBDeviceState will be set to "CONFIGURED_STATE".
if((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1)) return;
//All currently existing Microchip USB microcontroller use a dedicated Direct
//Memory Access (DMA) interface allowing the USB module to directly read or
//write USB packets into or out of microcontroller SRAM. To receive an "OUT"
//packet from the host (in USB terminology, OUT and IN are always from the host's
//perspective), the microcontroller firmware needs to "arm" the Buffer
//Descriptor Table (BDT) for the endpoint that the data will be received on.
//The BDT entry is a small set of special function registers (SFRs) that
//control the operation of the DMA transaction (number of bytes to receive,
//pointer to where in SRAM the data should be placed, etc.). Depending upon
//the USB module configuration, there will be many BDT entries, as each
//combination of endpoint number, endpoint direction, and endpoint
//"even/odd-ness" (when ping-pong buffering is enabled), needs a dedicated
//set of SFRs for controling the DMA behavior when the host tries to read/write
//to the respective endpoint.
//As the device completes the enumeration process, the USBCBInitEP() function will
//get called. In this function, we initialize the user application endpoints (in this
//example code, the user application makes use of EP1 OUT, EP2 OUT, EP3 OUT).
//The USBTransferOnePacket() function calls in the USBCBInitEP() function initializes an endpoint
//and "arms" it so that it can receive a packet of data from the host. Once the endpoint
//has been armed, the host can then send data to it (assuming some kind of application software
//is running on the host, and the application software tries to send data to the USB device).
//If the host sends a packet of data to the endpoint 1 OUT buffer, the hardware of the SIE will
//automatically receives it and stores the data at the memory location pointed to when we called
//USBTransferOnePacket(). Additionally, the endpoint handle will indicate
//that the endpoint is no longer busy. At this point, it is safe for this firmware to begin reading
//from the endpoint buffer, and processing the data. In this example, we don't actually do anything
//with the data that is received from the host, since this demo is simply meant to show high bandwidth
//USB communication.
//This demo makes full use of the "ping-pong" buffering features implemented
//by the USB module hardware. Ping-pong buffering is like a "DMA FIFO".
//It enables up to two transactions to be queued up on a single endpoint.
//While the firmware may be processing and using previously received data,
//the USB module hardware can be configured to still receive the next packet
//of data that may be sent from the host.
//As an example in the below code, if the USB host tries to send 273 bytes
//to "Endpoint 1 OUT", the following sequence will occur:
//1. The first set of bytes (0-63) will arrive in the EP1OUTEvenBuffer[].
//2. The next set of bytes (64-127) will arrive in the EP1OUTOddBuffer[].
//3. Assuming the firmware re-armed the EP1OUTEven BDT, then the next set of
// bytes (128-191) will arrive in the EP1OUTEvenBuffer[].
//4. Assuming the firmware re-armed the EP1OUTOdd BDT, then the next set of
// bytes (192-255) will arrive in the EP1OUTOddBuffer[].
//5. Assuming the firmware re-armed the EP1OUTEven BDT, then the next set of
// bytes (256-272) will arrive in the EP1OUTEvenBuffer[]. This completes
// the transfer, as the host has successfully sent 273 bytes total (0-272).
//If after successfully completing the above 273 byte transfer, and the host
//wants to start another transfer and send another 75 bytes, the following
//will occur:
//6. Assuming the firmware re-armed the EP1OUTOdd BDT, then bytes (0-63)
// will arrive in the EP1OUTOddBuffer[].
//7. Assuming the firmware re-armed the EP1OUTEven BDT, then the next set of
// bytes (64-74) will arrive in the EP1OUTEvenBuffer[]. This completes
// the transfer, as the host has successfully sent 75 bytes total (0-74).
//In the above sequence, if the firmware had not gotten around to re-arming
//the EP1OUTEven BDT by step #3, then the EP1 OUT endpoint will continuously
//NAK until the firmware eventually does re-arm the EP1OUTEven BDT. This
//NAKing will temporarily halt the data flow, but it does not cause data to
//be lost. The host will continue to retry sending the data until it is
//received successfully, or, the host PC application that is sending the data
//aborts the operation. The PC application software can be written to
//optionally abort a transfer if it takes too long (or some other event
//takes place, such as the user trying to close the application).
if(EP1OUTEvenNeedsServicingNext == true) //Check which buffer (even/odd) the next set of data is going to arrive in
{
if(!USBHandleBusy(EP1OUTEvenHandle)) //Check if the endpoint has received any data from the host.
{
//If the microcontroller core gets to this point, it means that the host has
//successfully sent data to the EP1 OUT endpoint, and the data in the EP1OUTEvenBuffer[]
//is currently valid.
//Insert code here that would do something useful with the EP1OUTEvenBuffer[]
//data, according to the needs of the application. For this high-bandwidth
//example application, we don't do anything with the data, as the
//objective is to demonstrate maximum data transfer rate only.
//Now re-arm the EP1OUTEven BDT entry so that the EP1OUTEvenBuffer[] can
//be prepared to receive the "second to next" data packet that the host
//sends to EP1 OUT. The very next data packet sent to EP1 OUT will go
//into the EP1OUTOdd buffer. However, we still need to re-arm the
//EP1OUTEven BDT entry, so that the data packet that arrives after the
//one going into the EP1OUTOdd buffer has someplace to go.
//The USBTransferOnePacket() function call "arms" the endpoint (and
//makes it "busy"). If the endpoint is armed, the SIE will automatically
//accept data from the host, if the host tries to send a packet of data
//to the endpoint. Once a data packet addressed to this endpoint is
//received from the host, the endpoint will no longer be busy, and the
//application can read the data which will be sitting in the buffer.
EP1OUTEvenHandle = USBTransferOnePacket(1, OUT_FROM_HOST,(uint8_t*)&EP1OUTEvenBuffer,64);
EP1OUTEvenNeedsServicingNext = false;
}
}
else //else EP1OUTOdd needs servicing next
{
if(!USBHandleBusy(EP1OUTOddHandle)) //Check if the endpoint has received any data from the host.
{
//Insert code here that would do something useful with the data, according to the needs of
//the application.
//Re-arm the EP1OUTOdd BDT entry so the EP1OUTOddBuffer[] can receive
//the second to next data packet sent by the host.
EP1OUTOddHandle = USBTransferOnePacket(1, OUT_FROM_HOST,(uint8_t*)&EP1OUTOddBuffer,64);
EP1OUTEvenNeedsServicingNext = true;
}
}
if(EP2OUTEvenNeedsServicingNext == true)
{
if(!USBHandleBusy(EP2OUTEvenHandle)) //Check if the endpoint has received any data from the host.
{
//Re-arm the OUT endpoint for the next packet:
EP2OUTEvenHandle = USBTransferOnePacket(2, OUT_FROM_HOST,(uint8_t*)&EP2OUTEvenBuffer,64);
EP2OUTEvenNeedsServicingNext = false;
}
}
else //else EP2OUTOdd needs servicing next
{
if(!USBHandleBusy(EP2OUTOddHandle)) //Check if the endpoint has received any data from the host.
{
//Re-arm the OUT endpoint for the next packet:
EP2OUTOddHandle = USBTransferOnePacket(2, OUT_FROM_HOST,(uint8_t*)&EP2OUTOddBuffer,64);
EP2OUTEvenNeedsServicingNext = true;
}
}
if(EP3OUTEvenNeedsServicingNext == true)
{
if(!USBHandleBusy(EP3OUTEvenHandle)) //Check if the endpoint has received any data from the host.
{
//Re-arm the OUT endpoint for the next packet:
EP3OUTEvenHandle = USBTransferOnePacket(3, OUT_FROM_HOST,(uint8_t*)&EP3OUTEvenBuffer,64);
EP3OUTEvenNeedsServicingNext = false;
}
}
else //else EP3OUTOdd needs servicing next
{
if(!USBHandleBusy(EP3OUTOddHandle)) //Check if the endpoint has received any data from the host.
{
//Re-arm the OUT endpoint for the next packet:
EP3OUTOddHandle = USBTransferOnePacket(3, OUT_FROM_HOST,(uint8_t*)&EP3OUTOddBuffer,64);
EP3OUTEvenNeedsServicingNext = true;
}
}
}
/******************************************************************************
Function:
BYTE MSDWriteHandler(void)
Description:
This funtion processes a write command received through
the MSD class driver
PreCondition:
None
Parameters:
None
Return Values:
BYTE - the current state of the MSDWriteHandler state
machine. The valid values are defined in MSD.h under the
MSDWriteHandler state machine declaration section
Remarks:
None
*****************************************************************************/
BYTE MSDWriteHandler(void)
{
switch(MSDWriteState)
{
case MSD_WRITE10_WAIT:
/* Read the LBA, TransferLength fields from Command Block
NOTE: CB is Big-Endian */
LBA.v[3]=gblCBW.CBWCB[2];
LBA.v[2]=gblCBW.CBWCB[3];
LBA.v[1]=gblCBW.CBWCB[4];
LBA.v[0]=gblCBW.CBWCB[5];
TransferLength.v[1]=gblCBW.CBWCB[7];
TransferLength.v[0]=gblCBW.CBWCB[8];
//Initially assume success, unless handler code later encounters an
//error condition and sets the status to 0x01 or 0x02.
msd_csw.bCSWStatus=0x0;
MSD_State = MSD_WRITE10_BLOCK;
//Fall through to MSD_WRITE10_BLOCK
case MSD_WRITE10_BLOCK:
if(TransferLength.Val == 0)
{
MSDWriteState = MSD_WRITE10_WAIT;
break;
}
MSDWriteState = MSD_WRITE10_RX_SECTOR;
ptrNextData=(BYTE *)&msd_buffer[0];
msd_csw.dCSWDataResidue=BLOCKLEN_512;
//Fall through to MSD_WRITE10_RX_SECTOR
case MSD_WRITE10_RX_SECTOR:
{
/* Read 512B into msd_buffer*/
if(msd_csw.dCSWDataResidue>0)
{
if(USBHandleBusy(USBMSDOutHandle) == TRUE)
{
break;
}
USBMSDOutHandle = USBRxOnePacket(MSD_DATA_OUT_EP,ptrNextData,MSD_OUT_EP_SIZE);
MSDWriteState = MSD_WRITE10_RX_PACKET;
//Fall through to MSD_WRITE10_RX_PACKET
}
else
{
//We finished receiving a sector worth of data from the host.
//Check if the media is write protected before deciding what
//to do with the data.
if(LUNWriteProtectState())
{
//The device appears to be write protected.
//Let host know error occurred. The bCSWStatus flag is also used by
//the write handler, to know not to even attempt the write sequence.
msd_csw.bCSWStatus=0x01;
//Set sense keys so the host knows what caused the error.
gblSenseData[LUN_INDEX].SenseKey=S_NOT_READY;
gblSenseData[LUN_INDEX].ASC=ASC_WRITE_PROTECTED;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_WRITE_PROTECTED;
}
MSDWriteState = MSD_WRITE10_SECTOR;
break;
}
}
//Fall through to MSD_WRITE10_RX_PACKET
case MSD_WRITE10_RX_PACKET:
if(USBHandleBusy(USBMSDOutHandle) == TRUE)
{
break;
}
gblCBW.dCBWDataTransferLength-=USBHandleGetLength(USBMSDOutHandle); // 64B read
msd_csw.dCSWDataResidue-=USBHandleGetLength(USBMSDOutHandle);
ptrNextData += MSD_OUT_EP_SIZE;
MSDWriteState = MSD_WRITE10_RX_SECTOR;
break;
case MSD_WRITE10_SECTOR:
{
//Make sure that no error has been detected, before performing the write
//operation. If there was an error, skip the write operation, but allow
//the TransferLength to continue decrementing, so that we can eventually
//receive all OUT bytes that the host is planning on sending us. Only
//after that is complete will the host send the IN token for the CSW packet,
//which will contain the bCSWStatus letting it know an error occurred.
if(msd_csw.bCSWStatus == 0x00)
{
if(LUNSectorWrite(LBA.Val, (BYTE*)&msd_buffer[0], (LBA.Val==0)?TRUE:FALSE) != TRUE)
{
//The write operation failed for some reason. Keep track of retry
//attempts and abort if repeated write attempts also fail.
if(MSDRetryAttempt < MSD_FAILED_WRITE_MAX_ATTEMPTS)
{
MSDRetryAttempt++;
break;
}
else
{
//Too many consecutive failed write attempts have occurred.
//Need to give up and abandon the write attempt.
msd_csw.bCSWStatus=0x01; // Error 0x01 Refer page#18
// of BOT specifications
//Set error status sense keys, so the host can check them later
//to determine how to proceed.
gblSenseData[LUN_INDEX].SenseKey=S_MEDIUM_ERROR;
gblSenseData[LUN_INDEX].ASC=ASC_NO_ADDITIONAL_SENSE_INFORMATION;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_NO_ADDITIONAL_SENSE_INFORMATION;
}
}
}
//One LBA is written (unless an error occurred). Advance state
//variables so we can eventually finish handling the CBW request.
LBA.Val++;
TransferLength.Val--;
MSDWriteState = MSD_WRITE10_BLOCK;
break;
}
default:
//Illegal condition which should not occur. If for some reason it
//does, try to let the host know know an error has occurred.
msd_csw.bCSWStatus=0x02; //Phase Error
MSDWriteState = MSD_WRITE10_WAIT;
}
return MSDWriteState;
}
/*********************************************************************
* Function: void APP_DeviceAudioMIDITasks(void);
*
* Overview: Keeps the Custom HID demo running.
*
* PreCondition: The demo should have been initialized and started via
* the APP_DeviceAudioMIDIInitialize() and APP_DeviceAudioMIDIStart() demos
* respectively.
*
* Input: None
*
* Output: None
*
********************************************************************/
void APP_DeviceAudioMIDITasks()
{
/* If the device is not configured yet, or the device is suspended, then
* we don't need to run the demo since we can't send any data.
*/
if( (USBGetDeviceState() < CONFIGURED_STATE) ||
(USBIsDeviceSuspended() == true))
{
return;
}
if(!USBHandleBusy(USBRxHandle))
{
//We have received a MIDI packet from the host, process it and then
// prepare to receive the next packet
//INSERT MIDI PROCESSING CODE HERE
//Get ready for next packet (this will overwrite the old data)
USBRxHandle = USBRxOnePacket(USB_DEVICE_AUDIO_MIDI_ENDPOINT,(uint8_t*)&ReceivedDataBuffer,64);
}
/* If the user button is pressed... */
if(BUTTON_IsPressed(BUTTON_DEVICE_AUDIO_MIDI) == true)
{
/* and we haven't sent a transmission in the past 100ms... */
if(msCounter == 0)
{
/* and we have sent the NOTE_OFF for the last note... */
if(sentNoteOff == true)
{
/* and we aren't currently trying to transmit data... */
if(!USBHandleBusy(USBTxHandle))
{
//Then reset the 100ms counter
msCounter = 100;
midiData.Val = 0; //must set all unused values to 0 so go ahead
// and set them all to 0
midiData.CableNumber = 0;
midiData.CodeIndexNumber = MIDI_CIN_NOTE_ON;
midiData.DATA_0 = 0x90; //Note on
midiData.DATA_1 = pitch; //pitch
midiData.DATA_2 = 0x7F; //velocity
USBTxHandle = USBTxOnePacket(USB_DEVICE_AUDIO_MIDI_ENDPOINT,(uint8_t*)&midiData,4);
/* we now need to send the NOTE_OFF for this note. */
sentNoteOff = false;
}
}
}
}
else
{
if(msCounter == 0)
{
if(sentNoteOff == false)
{
if(!USBHandleBusy(USBTxHandle))
{
//Debounce counter for 100ms
msCounter = 100;
midiData.Val = 0; //must set all unused values to 0 so go ahead
// and set them all to 0
midiData.CableNumber = 0;
midiData.CodeIndexNumber = MIDI_CIN_NOTE_ON;
midiData.DATA_0 = 0x90; //Note off
midiData.DATA_1 = pitch++; //pitch
midiData.DATA_2 = 0x00; //velocity
if(pitch == 0x49)
{
pitch = 0x3C;
}
USBTxHandle = USBTxOnePacket(USB_DEVICE_AUDIO_MIDI_ENDPOINT,(uint8_t*)&midiData,4);
sentNoteOff = true;
}
}
}
}
}
BYTE MSDReadHandler(void)
{
switch(MSDReadState)
{
case MSD_READ10_WAIT:
LBA.v[3]=gblCBW.CBWCB[2];
LBA.v[2]=gblCBW.CBWCB[3];
LBA.v[1]=gblCBW.CBWCB[4];
LBA.v[0]=gblCBW.CBWCB[5];
TransferLength.v[1]=gblCBW.CBWCB[7];
TransferLength.v[0]=gblCBW.CBWCB[8];
//Assume success initially, msd_csw.bCSWStatus will get set to 0x01
//or 0x02 later if an error is detected during the actual read sequence.
msd_csw.bCSWStatus=0x0;
msd_csw.dCSWDataResidue=0x0;
MSDReadState = MSD_READ10_BLOCK;
//Fall through to MSD_READ_BLOCK
case MSD_READ10_BLOCK:
if(TransferLength.Val == 0)
{
MSDReadState = MSD_READ10_WAIT;
break;
}
TransferLength.Val--; // we have read 1 LBA
MSDReadState = MSD_READ10_SECTOR;
//Fall through to MSD_READ10_SECTOR
case MSD_READ10_SECTOR:
//if the old data isn't completely sent yet
if(USBHandleBusy(USBMSDInHandle) != 0)
{
break;
}
//Try to read a sector worth of data from the media, but check for
//possible errors.
if(LUNSectorRead(LBA.Val, (BYTE*)&msd_buffer[0]) != TRUE)
{
if(MSDRetryAttempt < MSD_FAILED_READ_MAX_ATTEMPTS)
{
MSDRetryAttempt++;
break;
}
else
{
//Too many consecutive failed reads have occurred. Need to
//give up and abandon the sector read attempt; something must
//be wrong and we don't want to get stuck in an infinite loop.
//Need to indicate to the host that a device error occurred.
//However, we can't send the CSW immediately, since the host
//still expects to receive sector read data on the IN endpoint
//first. Therefore, we still send dummy bytes, before
//we send the CSW with the failed status in it.
msd_csw.bCSWStatus=0x01; // Error 0x01 Refer page#18
// of BOT specifications
//Set error status sense keys, so the host can check them later
//to determine how to proceed.
gblSenseData[LUN_INDEX].SenseKey=S_MEDIUM_ERROR;
gblSenseData[LUN_INDEX].ASC=ASC_NO_ADDITIONAL_SENSE_INFORMATION;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_NO_ADDITIONAL_SENSE_INFORMATION;
}
}//else we successfully read a sector worth of data from our media
LBA.Val++;
msd_csw.dCSWDataResidue=BLOCKLEN_512;//in order to send the
//512 bytes of data read
ptrNextData=(BYTE *)&msd_buffer[0];
MSDReadState = MSD_READ10_TX_SECTOR;
//Fall through to MSD_READ10_TX_SECTOR
case MSD_READ10_TX_SECTOR:
if(msd_csw.dCSWDataResidue == 0)
{
MSDReadState = MSD_READ10_BLOCK;
break;
}
MSDReadState = MSD_READ10_TX_PACKET;
//Fall through to MSD_READ10_TX_PACKET
case MSD_READ10_TX_PACKET:
/* Write next chunk of data to EP Buffer and send */
//Make sure the endpoint is available before using it.
if(USBHandleBusy(USBMSDInHandle))
{
break;
}
//Prepare the USB module to send an IN transaction worth of data to the host.
USBMSDInHandle = USBTxOnePacket(MSD_DATA_IN_EP,ptrNextData,MSD_IN_EP_SIZE);
MSDReadState = MSD_READ10_TX_SECTOR;
gblCBW.dCBWDataTransferLength-= MSD_IN_EP_SIZE;
msd_csw.dCSWDataResidue-=MSD_IN_EP_SIZE;
ptrNextData+=MSD_IN_EP_SIZE;
break;
default:
//Illegal condition, should never occur. In the event that it ever
//did occur anyway, try to notify the host of the error.
msd_csw.bCSWStatus=0x02; //indicate "Phase Error"
//Advance state machine
MSDReadState = MSD_READ10_WAIT;
}
return MSDReadState;
}
/******************************************************************************
* Function: void ProcessIO(void)
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
* Side Effects: None
*
* Overview: This function is a place holder for other user routines.
* It is a mixture of both USB and non-USB tasks.
*
* Note: None
*****************************************************************************/
void ProcessIO(void)
{
//Blink the LEDs according to the USB device status, but only do so if the PC application isn't connected and controlling the LEDs.
if(blinkStatusValid)
{
BlinkUSBStatus();
}
//User Application USB tasks below.
//Note: The user application should not begin attempting to read/write over the USB
//until after the device has been fully enumerated. After the device is fully
//enumerated, the USBDeviceState will be set to "CONFIGURED_STATE".
if((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1)) return;
//As the device completes the enumeration process, the USBCBInitEP() function will
//get called. In this function, we initialize the user application endpoints (in this
//example code, the user application makes use of endpoint 1 IN and endpoint 1 OUT).
//The USBGenRead() function call in the USBCBInitEP() function initializes endpoint 1 OUT
//and "arms" it so that it can receive a packet of data from the host. Once the endpoint
//has been armed, the host can then send data to it (assuming some kind of application software
//is running on the host, and the application software tries to send data to the USB device).
//If the host sends a packet of data to the endpoint 1 OUT buffer, the hardware of the SIE will
//automatically receive it and store the data at the memory location pointed to when we called
//USBGenRead(). Additionally, the endpoint handle (in this case USBGenericOutHandle) will indicate
//that the endpoint is no longer busy. At this point, it is safe for this firmware to begin reading
//from the endpoint buffer, and processing the data. In this example, we have implemented a few very
//simple commands. For example, if the host sends a packet of data to the endpoint 1 OUT buffer, with the
//first byte = 0x80, this is being used as a command to indicate that the firmware should "Toggle LED(s)".
if(!USBHandleBusy(USBGenericOutHandle)) //Check if the endpoint has received any data from the host.
{
switch(OUTPacket[0]) //Data arrived, check what kind of command might be in the packet of data.
{
case 0x80: //Toggle LED(s) command from PC application.
blinkStatusValid = FALSE; //Disable the regular LED blink pattern indicating USB state, PC application is controlling the LEDs.
if(mGetLED_1() == mGetLED_2())
{
mLED_1_Toggle();
mLED_2_Toggle();
}
else
{
mLED_1_On();
mLED_2_On();
}
break;
case 0x81: //Get push button state command from PC application.
INPacket[0] = 0x81; //Echo back to the host PC the command we are fulfilling in the first byte. In this case, the Get Pushbutton State command.
// if(sw2 == 1) //pushbutton not pressed, pull up resistor on circuit board is pulling the PORT pin high
if (UserSW == 1)
{
INPacket[1] = 0x01;
}
else //sw2 must be == 0, pushbutton is pressed and overpowering the pull up resistor
{
INPacket[1] = 0x00;
}
//Now check to make sure no previous attempts to send data to the host are still pending. If any attemps are still
//pending, we do not want to write to the endpoint 1 IN buffer again, until the previous transaction is complete.
//Otherwise the unsent data waiting in the buffer will get overwritten and will result in unexpected behavior.
if(!USBHandleBusy(USBGenericInHandle))
{
//The endpoint was not "busy", therefore it is safe to write to the buffer and arm the endpoint.
//The USBGenWrite() function call "arms" the endpoint (and makes the handle indicate the endpoint is busy).
//Once armed, the data will be automatically sent to the host (in hardware by the SIE) the next time the
//host polls the endpoint. Once the data is successfully sent, the handle (in this case USBGenericInHandle)
//will indicate the the endpoint is no longer busy.
USBGenericInHandle = USBGenWrite(USBGEN_EP_NUM,(BYTE*)&INPacket,USBGEN_EP_SIZE);
}
break;
}
//Re-arm the OUT endpoint for the next packet:
//The USBGenRead() function call "arms" the endpoint (and makes it "busy"). If the endpoint is armed, the SIE will
//automatically accept data from the host, if the host tries to send a packet of data to the endpoint. Once a data
//packet addressed to this endpoint is received from the host, the endpoint will no longer be busy, and the application
//can read the data which will be sitting in the buffer.
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM,(BYTE*)&OUTPacket,USBGEN_EP_SIZE);
}
}//end ProcessIO
/******************************************************************************
* Function: void ProcessIO(void)
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
* Side Effects: None
*
* Overview: This function is a place holder for other user routines.
* It is a mixture of both USB and non-USB tasks.
*
* Note: None
*****************************************************************************/
void USBUpdate(void) {
byte data[2];
byte i;
byte paramNum;
ulong tempLong;
USBDeviceTasks();
if ((USBDeviceState < CONFIGURED_STATE) || (USBSuspendControl==1)) {
return;
}
//As the device completes the enumeration process, the USBCBInitEP() function will
//get called. In this function, we initialize the user application endpoints (in this
//example code, the user application makes use of endpoint 1 IN and endpoint 1 OUT).
//The USBGenRead() function call in the USBCBInitEP() function initializes endpoint 1 OUT
//and "arms" it so that it can receive a packet of data from the host. Once the endpoint
//has been armed, the host can then send data to it (assuming some kind of application software
//is running on the host, and the application software tries to send data to the USB device).
//If the host sends a packet of data to the endpoint 1 OUT buffer, the hardware of the SIE will
//automatically receive it and store the data at the memory location pointed to when we called
//USBGenRead(). Additionally, the endpoint handle (in this case USBGenericOutHandle) will indicate
//that the endpoint is no longer busy. At this point, it is safe for this firmware to begin reading
//from the endpoint buffer, and processing the data. In this example, we have implemented a few very
//simple commands. For example, if the host sends a packet of data to the endpoint 1 OUT buffer, with the
//first byte = 0x80, this is being used as a command to indicate that the firmware should "Toggle LED(s)".
if(!USBHandleBusy(USBGenericOutHandle) && //Check if the endpoint has received any data from the host.
//Now check to make sure no previous attempts to send data to the host are still pending. If any attemps are still
//pending, we do not want to write to the endpoint 1 IN buffer again, until the previous transaction is complete.
//Otherwise the unsent data waiting in the buffer will get overwritten and will result in unexpected behavior.
(!USBGenericInHandle || !USBHandleBusy(USBGenericInHandle))) {
if (OUTPacket[USB_PACKET_LEN] < 7) {
// message too short
}
else {
usbActivityTimeout = 3000; // reset timeout (in ms) 3 seconds
switch(OUTPacket[USB_PACKET_CMD]) { //Data arrived, check what kind of command might be in the packet of data.
case USB_CMD_NULL: // 0x00
if (OUTPacket[USB_PACKET_LEN] != 7) {
data[0] = USB_ERR_BAD_LEN;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else {
UsbSendResp(USB_RESP_NULL, data);
}
break;
case USB_CMD_GET_VSTRING:
if (OUTPacket[USB_PACKET_LEN] != 7) {
data[0] = USB_ERR_BAD_LEN;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else {
UsbSendResp(USB_RESP_GET_VSTRING, data);
}
break;
case USB_CMD_GET_CHAN:
if (OUTPacket[USB_PACKET_LEN] != 7) {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else if (OUTPacket[USB_PACKET_STR] >= NUM_STRINGS) {
data[0] = USB_ERR_BAD_PRM;
data[1] = 0;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else if (!OUTPacket[USB_PACKET_MCT] || OUTPacket[USB_PACKET_MCT] > NUM_MCT) {
data[0] = USB_ERR_BAD_PRM;
data[1] = 1;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else {
UsbSendResp(USB_RESP_GET_CHAN, data);
}
break;
case USB_CMD_GET_MIRRORS:
if (OUTPacket[USB_PACKET_LEN] != 7) {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else if (OUTPacket[USB_PACKET_STR] >= NUM_STRINGS) {
data[0] = USB_ERR_BAD_PRM;
data[1] = 0;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else if (!OUTPacket[USB_PACKET_MCT] || OUTPacket[USB_PACKET_MCT] > NUM_MCT) {
data[0] = USB_ERR_BAD_PRM;
data[1] = 1;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else {
UsbSendResp(USB_RESP_GET_MIRRORS, data);
}
break;
case USB_CMD_GET_STRING:
if (OUTPacket[USB_PACKET_LEN] != 7) {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else if (OUTPacket[USB_PACKET_STR] >= NUM_STRINGS) {
data[0] = USB_ERR_BAD_PRM;
data[1] = 0;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
else {
UsbSendResp(USB_RESP_GET_STRING, data);
}
break;
case USB_CMD_FIELD_STATE:
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_FIELD_STATE, data);
}
else if (OUTPacket[USB_PACKET_LEN] == 8) {
FieldNewState(OUTPacket[USB_PACKET_DATA]);
UsbSendResp(USB_RESP_FIELD_STATE, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_GET_FCE:
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_GET_FCE, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_GET_RTU:
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_GET_RTU, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_SEND_MCT485: // 0x64
if (OUTPacket[USB_PACKET_LEN] >= 11
&& OUTPacket[USB_PACKET_LEN] < MCT485_MAX_INDEX + 7) {
//Mct485CannedMsg(MSG_ORIGIN_USB,
// OUTPacket[USB_PACKET_STR],
// OUTPacket[USB_PACKET_LEN]-7,
// &OUTPacket[USB_PACKET_DATA]);
usb485TxString = OUTPacket[USB_PACKET_STR];
usb485TxLen = OUTPacket[USB_PACKET_LEN]-7;
for (i = 0; i < usb485TxLen; i++) {
usb485TxBuffer[i] = OUTPacket[USB_PACKET_DATA+i];
}
// clear 485 response buffer
usb485RxLen = 0;
UsbSendResp(USB_RESP_SEND_MCT485, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_GET_MCT485: // 0x65
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_GET_MCT485, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_RTC: // 0x66
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_RTC, data);
}
else if (OUTPacket[USB_PACKET_LEN] == 13) {
RtcSetClock(&OUTPacket[USB_PACKET_DATA]);
UsbSendResp(USB_RESP_RTC, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_LOG: // 0x67
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_LOG, data);
}
else if (OUTPacket[USB_PACKET_LEN] == 8) {
if (OUTPacket[USB_PACKET_DATA] == 0) {
DataLogFindFirstEntry();
}
else if (OUTPacket[USB_PACKET_DATA] == 0xFF) {
DataLogErase();
}
UsbSendResp(USB_RESP_LOG, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_DESICCANT: // 0x68
if (OUTPacket[USB_PACKET_LEN] == 7) {
UsbSendResp(USB_RESP_DESICCANT, data);
}
else if (OUTPacket[USB_PACKET_LEN] == 9) {
// manual force dessicant to set of outputs or state
DesiccantNewState(OUTPacket[USB_PACKET_DATA], OUTPacket[USB_PACKET_DATA+1]);
UsbSendResp(USB_RESP_DESICCANT, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_SFC_PARAM: // 0x69
if (OUTPacket[USB_PACKET_LEN] == 8) {
UsbSendResp(USB_RESP_SFC_PARAM, data);
}
else if (OUTPacket[USB_PACKET_LEN] > 8 && !(OUTPacket[USB_PACKET_LEN] & 0x03)) {
// process one param at a time, prevents I2C queue entry overflow and avoids
// I2C page boundary problems
paramNum = OUTPacket[USB_PACKET_DATA];
i = USB_PACKET_DATA+1;
while (i < OUTPacket[USB_PACKET_LEN]-2) {
tempLong = OUTPacket[i++];
tempLong *= 256;
tempLong += OUTPacket[i++];
tempLong *= 256;
tempLong += OUTPacket[i++];
tempLong *= 256;
tempLong += OUTPacket[i++];
ParamWrite(paramNum, tempLong);
paramNum++;
}
UsbSendResp(USB_RESP_SFC_PARAM, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_MEMORY: // 0x6A
if (OUTPacket[USB_PACKET_LEN] == 11) {
data[4] = 16;
UsbSendResp(USB_RESP_MEMORY, data);
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
case USB_CMD_TEST: // 0x6B
if (OUTPacket[USB_PACKET_LEN] == 8) {
UsbSendResp(USB_RESP_TEST, data);
for (tempLong = 0; tempLong < 1000000; tempLong++) {
}
if (OUTPacket[USB_PACKET_DATA] == 0x01) {
Mct485Init();
}
else if (OUTPacket[USB_PACKET_DATA] == 0x02) {
StringInit();
}
else if (OUTPacket[USB_PACKET_DATA] == 0x03) {
FieldInit();
}
else if (OUTPacket[USB_PACKET_DATA] == 0x04) {
SoftReset();
}
}
else {
data[0] = USB_ERR_BAD_LEN;
data[1] = 7;
UsbSendResp(USB_RESP_BAD_MSG, data);
}
break;
} // switch (cmd)
} // else process messages
//Re-arm the OUT endpoint for the next packet:
//The USBGenRead() function call "arms" the endpoint (and makes it "busy"). If the endpoint is armed, the SIE will
//automatically accept data from the host, if the host tries to send a packet of data to the endpoint. Once a data
//packet addressed to this endpoint is received from the host, the endpoint will no longer be busy, and the application
//can read the data which will be sitting in the buffer.
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM,(BYTE*)&OUTPacket,USBGEN_EP_SIZE);
} // if
}// UsbUpdate()
BOOL midiTxHandleBusy(void)
{
return USBHandleBusy(midiTxHandle);
}
BYTE MSDReadHandler(void)
{
static BYTE MSDReadState = MSD_READ10_WAIT;
switch(MSDReadState)
{
case MSD_READ10_WAIT:
LBA.v[3]=gblCBW.CBWCB[2];
LBA.v[2]=gblCBW.CBWCB[3];
LBA.v[1]=gblCBW.CBWCB[4];
LBA.v[0]=gblCBW.CBWCB[5];
TransferLength.v[1]=gblCBW.CBWCB[7];
TransferLength.v[0]=gblCBW.CBWCB[8];
msd_csw.bCSWStatus=0x0;
msd_csw.dCSWDataResidue=0x0;
MSDReadState = MSD_READ10_BLOCK;
//Fall through to MSD_READ_BLOCK
case MSD_READ10_BLOCK:
if(TransferLength.Val == 0)
{
MSDReadState = MSD_READ10_WAIT;
break;
}
TransferLength.Val--; // we have read 1 LBA
MSDReadState = MSD_READ10_SECTOR;
//Fall through to MSD_READ10_SECTOR
case MSD_READ10_SECTOR:
//if the old data isn't completely sent yet
if(USBHandleBusy(USBMSDInHandle) != 0)
{
break;
}
if(LUNSectorRead(LBA.Val, (BYTE*)&msd_buffer[0]) != TRUE)
{
msd_csw.bCSWStatus=0x01; // Error 0x01 Refer page#18
// of BOT specifications
/* Don't read any more data*/
msd_csw.dCSWDataResidue=0x0;
MSD_State = MSD_DATA_IN;
break;
}
LBA.Val++;
msd_csw.bCSWStatus=0x00; // success
msd_csw.dCSWDataResidue=BLOCKLEN_512;//in order to send the
//512 bytes of data read
ptrNextData=(BYTE *)&msd_buffer[0];
MSDReadState = MSD_READ10_TX_SECTOR;
//Fall through to MSD_READ10_TX_SECTOR
case MSD_READ10_TX_SECTOR:
if(msd_csw.dCSWDataResidue == 0)
{
MSDReadState = MSD_READ10_BLOCK;
break;
}
MSDReadState = MSD_READ10_TX_PACKET;
//Fall through to MSD_READ10_TX_PACKET
case MSD_READ10_TX_PACKET:
if ((msd_csw.bCSWStatus==0x00)&&(msd_csw.dCSWDataResidue>=MSD_IN_EP_SIZE))
{
/* Write next chunk of data to EP Buffer and send */
if(USBHandleBusy(USBMSDInHandle))
{
break;
}
USBMSDInHandle = USBTxOnePacket(MSD_DATA_IN_EP,ptrNextData,MSD_IN_EP_SIZE);
MSDReadState = MSD_READ10_TX_SECTOR;
gblCBW.dCBWDataTransferLength-= MSD_IN_EP_SIZE;
msd_csw.dCSWDataResidue-=MSD_IN_EP_SIZE;
ptrNextData+=MSD_IN_EP_SIZE;
}
break;
}
return MSDReadState;
}
/********************************************************************
* Function: void ProcessIO(void)
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
* Side Effects: None
*
* Overview: This function is a place holder for other user
* routines. It is a mixture of both USB and
* non-USB tasks.
*
* Note: None
*******************************************************************/
void ProcessIO(void)
{
// User Application USB tasks
if((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1)) return;
if(!USBHandleBusy(USBRxHandle))
{
//We have received a MIDI packet from the host, process it and then
// prepare to receive the next packet
//INSERT MIDI PROCESSING CODE HERE
BOOL note_stealing = FALSE;
static BYTE note;
int channel;
BYTE oldest_channel;
unsigned long lowest_counter;
BOOL duplicate_note = FALSE;
float bent_note;
unsigned char bend_value;
USB_AUDIO_MIDI_EVENT_PACKET *packet = ReceivedDataBuffer; // suspicious pointer conversion, yada yada
// run through the complete buffer (16 packets x 4 bytes) and process MIDI messages
int buffer = 16; while(buffer--)
{
switch(packet->DATA_0 & MIDI_MESSAGE_MASK)
{
case MIDI_NOTE_ON:
if(note_stealing)
{
// Note stealing logic: find the channel with the lowest steal counter,
// and reassign it to the newest note on command. In the event of a
// tie, channel order decides.
oldest_channel = 0;
lowest_counter = 0xFFFFFFFF;
note = packet->DATA_1;
channel = CHANNELS;
while(channel--)
{
if(Generator[channel].Active == TRUE)
Generator[channel].StealTimer--;
if(Generator[channel].MidiNote == note && Generator[channel].Active == TRUE)
duplicate_note = TRUE;
if(Generator[channel].StealTimer < lowest_counter)
{
lowest_counter = Generator[channel].StealTimer;
oldest_channel = channel;
}
}
if(!duplicate_note)
{
Generator[oldest_channel].MidiNote = note;
Generator[oldest_channel].Period = NotePeriod[note];
Generator[oldest_channel].StealTimer = 0xFFFFFFFF;
Generator[oldest_channel].Active = TRUE;
}
}
else
{
note = packet->DATA_1;
channel = packet->DATA_0 & MIDI_CHANNEL_MASK;
if(channel >= 0 && channel < CHANNELS)
{
Generator[channel].MidiNote = note;
Generator[channel].Period = NotePeriod[note];
Generator[channel].Active = TRUE;
}
}
break;
case MIDI_NOTE_OFF:
if(note_stealing)
{
channel = CHANNELS;
note = packet->DATA_1;
// find the active channel for this note, if it exists
while(channel--)
{
if(Generator[channel].MidiNote == note)
{
//kill it
Generator[channel].Active = FALSE;
Generator[channel].StealTimer = 0;
break;
}
}
}
else
{
note = packet->DATA_1;
channel = packet->DATA_0 & MIDI_CHANNEL_MASK;
if(channel >= 0 && channel < CHANNELS)
{
if(Generator[channel].MidiNote == note)
{
Generator[channel].Active = FALSE;
}
}
}
break;
// Please excuse this atrocious bend code. It was rushed to be used, only to not
// actually be used at all due to a change in song choice. It did work "kind of"
// when I originally implemented it, but I never ironed the bugs out. In fact it
// may not work at all in its present state due to changes elsewhere. I definitely
// did have it working at one point in time for a song demo I decided not to make.
case MIDI_PITCH_BEND:
{
channel = packet->DATA_0 & MIDI_CHANNEL_MASK;
if(channel >= 0 && channel < CHANNELS)
{
note = Generator[channel].MidiNote;
//bent_note = NotePeriod[note];
// 100 cents per semitone, PITCH_BEND_RANGE max semitones
// 1. calculate how many cents to bend pitch ...
// we can use a piecewise linear interpolation between semitones
// if we restrict the max bend range to +/- 2 semitones, we can
// just check if the bend is between 0 and 1 semitones and linearly interpolate,
// or if it's between 1 and 2 semitones, start at the next highest note, and linearly
// interpolate to the one above that (or so on for successively higher ranges)
// 2 ^ 1/12 = 1.05946309435929526456...
// 2 ^-1/12 = 0.94387431268169349664...
// for PITCH_BEND_RANGE = 2
// max cents = PITCH_BEND_RANGE * 100 = 200 cents
// 0x2000 - 0x3FFF = 200 cents; 0x2000 - 0x0000 = 200 cents
// 0x2000 = no bend, 0x0000 = full bend down, 0x3FFF = full bend up
// 1. assemble the 14-bit bend value
//bend_value = ((int)(Generator[channel].DATA_2 & 0x7F) << 7) | (int)(Generator[channel].DATA_1 & 0x7F);
// actually, we can probably get away with using only the most significant byte because the floppy-stepper-oscillator is such a crude sound in the first place
bend_value = packet->DATA_2;
// 2. determine if the bend is up or down
if(bend_value > 0x40)
{
bend_value -= 0x40; // value between 0x00 and 0x3F
if(bend_value >= 0x20) // bend past +1 semitone
{
bend_value -= 0x20; // value between 0x00 and 0x1F;
bent_note = NotePeriod[note+1];
}
else // bend between 0 and +1 semitone
{
bent_note = NotePeriod[note];
}
// !! FIX THIS
// !! we need to bend the cycle period down to bend frequency up, and vice-versa
//bend_value = 0x20 - bend_value;
bent_note *= BendCoeff[bend_value];
}
else if(bend_value < 0x40)
{
bend_value = bend_value - 0x39;
}
Generator[channel].Period = bent_note;
}
}
break;
default:
break;
}
packet++;
}
//Get ready for next packet (this will overwrite the old data)
USBRxHandle = USBRxOnePacket(MIDI_EP,(BYTE*)&ReceivedDataBuffer,64);
}
}//end ProcessIO
/******************************************************************************
Function:
BYTE MSDWriteHandler(void)
Description:
This funtion processes a write command received through
the MSD class driver
PreCondition:
None
Parameters:
None
Return Values:
BYTE - the current state of the MSDWriteHandler state
machine. The valid values are defined in MSD.h under the
MSDWriteHandler state machine declaration section
Remarks:
None
*****************************************************************************/
BYTE MSDWriteHandler(void)
{
static BYTE MSDWriteState = MSD_WRITE10_WAIT;
switch(MSDWriteState)
{
case MSD_WRITE10_WAIT:
/* Read the LBA, TransferLength fields from Command Block
NOTE: CB is Big-Endian */
LBA.v[3]=gblCBW.CBWCB[2];
LBA.v[2]=gblCBW.CBWCB[3];
LBA.v[1]=gblCBW.CBWCB[4];
LBA.v[0]=gblCBW.CBWCB[5];
TransferLength.v[1]=gblCBW.CBWCB[7];
TransferLength.v[0]=gblCBW.CBWCB[8];
msd_csw.bCSWStatus=0x0;
MSD_State = MSD_WRITE10_BLOCK;
//Fall through to MSD_WRITE10_BLOCK
case MSD_WRITE10_BLOCK:
if(TransferLength.Val == 0)
{
MSDWriteState = MSD_WRITE10_WAIT;
break;
}
MSDWriteState = MSD_WRITE10_RX_SECTOR;
ptrNextData=(BYTE *)&msd_buffer[0];
msd_csw.dCSWDataResidue=BLOCKLEN_512;
//Fall through to MSD_WRITE10_RX_SECTOR
case MSD_WRITE10_RX_SECTOR:
{
/* Read 512B into msd_buffer*/
if(msd_csw.dCSWDataResidue>0)
{
if(USBHandleBusy(USBMSDOutHandle) == TRUE)
{
break;
}
USBMSDOutHandle = USBRxOnePacket(MSD_DATA_OUT_EP,ptrNextData,MSD_OUT_EP_SIZE);
MSDWriteState = MSD_WRITE10_RX_PACKET;
//Fall through to MSD_WRITE10_RX_PACKET
}
else
{
if(LUNWriteProtectState())
{
gblSenseData[LUN_INDEX].SenseKey=S_NOT_READY;
gblSenseData[LUN_INDEX].ASC=ASC_WRITE_PROTECTED;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_WRITE_PROTECTED;
msd_csw.bCSWStatus=0x01;
//TODO: (DF) - what state should I return to?
}
else
{
MSDWriteState = MSD_WRITE10_SECTOR;
}
break;
}
}
//Fall through to MSD_WRITE10_RX_PACKET
case MSD_WRITE10_RX_PACKET:
if(USBHandleBusy(USBMSDOutHandle) == TRUE)
{
break;
}
gblCBW.dCBWDataTransferLength-=USBHandleGetLength(USBMSDOutHandle); // 64B read
msd_csw.dCSWDataResidue-=USBHandleGetLength(USBMSDOutHandle);
ptrNextData += MSD_OUT_EP_SIZE;
MSDWriteState = MSD_WRITE10_RX_SECTOR;
break;
case MSD_WRITE10_SECTOR:
{
if(LUNSectorWrite(LBA.Val, (BYTE*)&msd_buffer[0], (LBA.Val==0)?TRUE:FALSE) != TRUE)
{
break;
}
// if (status) {
// msd_csw.bCSWStatus=0x01;
// /* add some sense keys here*/
// }
LBA.Val++; // One LBA is written. Write the next LBA
TransferLength.Val--;
MSDWriteState = MSD_WRITE10_BLOCK;
break;
}
}
return MSDWriteState;
}
static void processUsbCommands(void)
{
#if defined(USB_POLLING)
// Check bus status and service USB interrupts.
USBDeviceTasks(); // Interrupt or polling method. If using polling, must call
// this function periodically. This function will take care
// of processing and responding to SETUP transactions
// (such as during the enumeration process when you first
// plug in). USB hosts require that USB devices should accept
// and process SETUP packets in a timely fashion. Therefore,
// when using polling, this function should be called
// regularly (such as once every 1.8ms or faster** [see
// inline code comments in usb_device.c for explanation when
// "or faster" applies]) In most cases, the USBDeviceTasks()
// function does not take very long to execute (ex: <100
// instruction cycles) before it returns.
#endif
// Note: The user application should not begin attempting to read/write over the USB
// until after the device has been fully enumerated. After the device is fully
// enumerated, the USBDeviceState will be set to "CONFIGURED_STATE".
if ((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1))
return;
// As the device completes the enumeration process, the UsbCbInitEP() function will
// get called. In this function, we initialize the user application endpoints (in this
// example code, the user application makes use of endpoint 1 IN and endpoint 1 OUT).
// The USBGenRead() function call in the UsbCbInitEP() function initializes endpoint 1 OUT
// and "arms" it so that it can receive a packet of data from the host. Once the endpoint
// has been armed, the host can then send data to it (assuming some kind of application software
// is running on the host, and the application software tries to send data to the USB device).
// If the host sends a packet of data to the endpoint 1 OUT buffer, the hardware of the SIE will
// automatically receive it and store the data at the memory location pointed to when we called
// USBGenRead(). Additionally, the endpoint handle (in this case UsbOutCmdHandle) will indicate
// that the endpoint is no longer busy. At this point, it is safe for this firmware to begin reading
// from the endpoint buffer, and processing the data. In this example, we have implemented a few very
// simple commands. For example, if the host sends a packet of data to the endpoint 1 OUT buffer, with the
// first byte = 0x80, this is being used as a command to indicate that the firmware should "Toggle LED(s)".
if (!USBHandleBusy(UsbOutCmdHandle)) { // Check if the endpoint has received any data from the host.
#if DEBUG
unsigned char l = USBHandleGetLength(UsbOutCmdHandle);
if (usbfifo_debug_operation.dump_usb_out == 1) {
unsigned char b[16];
unsigned char i;
putrsUSART("USB OUT: '");
for (i=0;i<l;++i) {
if (i != 0) {
while (BusyUSART());
putcUSART(' ');
}
sprintf(b, "%02x", OutCmdPacket[i]);
putsUSART(b);
}
sprintf(b, "' len=%3d\r\n", l);
putsUSART(b);
}
if (usbfifo_debug_operation.usb_loopback == 1) {
unsigned char i;
// Now check to make sure no previous attempts to send data to the host are still pending. If any attemps are still
// pending, we do not want to write to the endpoint 1 IN buffer again, until the previous transaction is complete.
// Otherwise the unsent data waiting in the buffer will get overwritten and will result in unexpected behavior.
while (USBHandleBusy(UsbInCmdHandle));
for (i=0;i<l;++i)
InCmdPacket[i] = OutCmdPacket[i];
// The endpoint was not "busy", therefore it is safe to write to the buffer and arm the endpoint.
// The USBGenWrite() function call "arms" the endpoint (and makes the handle indicate the endpoint is busy).
// Once armed, the data will be automatically sent to the host (in hardware by the SIE) the next time the
// host polls the endpoint. Once the data is successfully sent, the handle (in this case UsbInCmdHandle)
// will indicate the the endpoint is no longer busy.
UsbInCmdHandle = USBGenWrite(USBGEN_CMD_EP_NUM, (BYTE*)&InCmdPacket, l);
}
#endif
switch (OutCmdPacket[0]) {
#if DEBUG
case USBFIFO_CMD_DUMP_USB_OUT:
usbfifo_debug_operation.dump_usb_out ^= 1;
break;
case USBFIFO_CMD_DUMP_FIFO_OUT:
usbfifo_debug_operation.dump_fifo_out ^= 1;
break;
case USBFIFO_CMD_FIFO_LOOPBACK:
usbfifo_debug_operation.fifo_loopback ^= 1;
break;
case USBFIFO_CMD_USB_LOOPBACK:
usbfifo_debug_operation.usb_loopback ^= 1;
break;
#endif
default:
{
unsigned char b[8];
putrsUSART("Unexpected cmd=");
sprintf(b, "0x%2X\r\n", OutCmdPacket[0]);
putsUSART(b);
}
break;
}
// Re-arm the OUT endpoint for the next packet:
// The USBGenRead() function call "arms" the endpoint (and makes it "busy"). If the endpoint is armed, the SIE will
// automatically accept data from the host, if the host tries to send a packet of data to the endpoint. Once a data
// packet addressed to this endpoint is received from the host, the endpoint will no longer be busy, and the application
// can read the data which will be sitting in the buffer.
UsbOutCmdHandle = USBGenRead(USBGEN_CMD_EP_NUM, (BYTE*)&OutCmdPacket, USBGEN_EP_SIZE);
}
if (!USBHandleBusy(UsbOutDataHandle)) {
#if USBGEN_EP_SIZE > FIFO_9403A_MAX_MSG_LEN
#error "Transfer of more than FIFO_9403A_MAX_MSG_LEN not implemented"
#endif
unsigned char l = USBHandleGetLength(UsbOutDataHandle);
unsigned char i;
#if DEBUG
if (usbfifo_debug_operation.dump_usb_out == 1) {
unsigned char b[16];
putrsUSART("USB OUT: '");
for (i=0;i<l;++i) {
if (i != 0) {
while (BusyUSART());
putcUSART(' ');
}
sprintf(b, "%02x", OutDataPacket[i]);
}
sprintf(b, "' len=%3d\r\n", l);
putsUSART(b);
}
if (usbfifo_debug_operation.usb_loopback == 1) {
while (USBHandleBusy(UsbInDataHandle)); // ensure that FIFO data left the device
for (i=0;i<l;++i)
InDataPacket[i] = OutDataPacket[i];
/* FIXME: use real ping-pong */
UsbInDataHandle = USBGenWrite(USBGEN_DATA_EP_NUM, (BYTE*)&InDataPacket, l);
while (USBHandleBusy(UsbInDataHandle)); // have to wait here as full ping-pong is not implemented
// and thus we don't want data from FIFO override the data being sent here
}
#endif
fifo9403aPush(l, 1);
for (i=0;i<l;++i)
fifo9403aPush(OutDataPacket[i], 1);
UsbOutDataHandle = USBGenRead(USBGEN_DATA_EP_NUM, (BYTE*)&OutDataPacket, USBGEN_EP_SIZE);
}
}
void USBCCIDBulkInService(void)
{
WORD byte_to_send;
BYTE i;
USBMaskInterrupts();
if(USBHandleBusy(usbCcidBulkInHandle))
{
USBUnmaskInterrupts();
return;
}
if(usbCcidBulkInTrfState == USB_CCID_BULK_IN_COMPLETING)
usbCcidBulkInTrfState = USB_CCID_BULK_IN_READY;
/*
* If USB_CCID_BULK_IN_READY state, nothing to do, just return.
*/
if(usbCcidBulkInTrfState == USB_CCID_BULK_IN_READY)
{
USBUnmaskInterrupts();
return;
}
/*
* If USB_CCID_BULK_IN_BUSY_ZLP state, send zero length packet
*/
if(usbCcidBulkInTrfState == USB_CCID_BULK_IN_BUSY_ZLP)
{
usbCcidBulkInHandle = USBTxOnePacket(USB_EP_BULK_IN,NULL,0);
usbCcidBulkInTrfState = USB_CCID_BULK_IN_COMPLETING;
}
else if(usbCcidBulkInTrfState == USB_CCID_BULK_IN_BUSY)
{
/*
* First, have to figure out how many byte of data to send.
*/
if(usbCcidBulkInLen > sizeof(usbCcidBulkInEndpoint))
byte_to_send = sizeof(usbCcidBulkInEndpoint);
else
byte_to_send = usbCcidBulkInLen;
/*
* Subtract the number of bytes just about to be sent from the total.
*/
usbCcidBulkInLen = usbCcidBulkInLen - byte_to_send;
pCCIDDst.bRam = (BYTE*)usbCcidBulkInEndpoint; // Set destination pointer
i = byte_to_send;
while(i)
{
*pCCIDDst.bRam = *pCCIDSrc.bRam;
pCCIDDst.bRam++;
pCCIDSrc.bRam++;
i--;
}//end while(byte_to_send._word)
/*
* Lastly, determine if a zero length packet state is necessary.
* See explanation in USB Specification 2.0: Section 5.8.3
*/
if(usbCcidBulkInLen == 0)
{
if(byte_to_send == USB_EP_SIZE)
usbCcidBulkInTrfState = USB_CCID_BULK_IN_BUSY_ZLP;
else
usbCcidBulkInTrfState = USB_CCID_BULK_IN_COMPLETING;
}//end if(usbCcidBulkInLen...)
usbCcidBulkInHandle = USBTxOnePacket(USB_EP_BULK_IN,(BYTE*)usbCcidBulkInEndpoint,byte_to_send);
}//end if(cdc_tx_sate == USB_CCID_BULK_IN_BUSY)
USBUnmaskInterrupts();
}//end USBCCIDBulkInService
/******************************************************************************
* Function: void ServiceRequests(void)
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
* Side Effects: USB traffic can be generated
*
* Overview: This function takes in the commands from the PC from the
* application and executes the commands requested
*
* Note: None
*****************************************************************************/
void ServiceRequests(void)
{
BYTE index;
//Check to see if data has arrived
if(!USBHandleBusy(USBGenericOutHandle))
{
//if the handle is no longer busy then the last
//transmission is complete
counter = 0;
INPacket.CMD=OUTPacket.CMD;
INPacket.len=OUTPacket.len;
//process the command
switch(OUTPacket.CMD)
{
case READ_VERSION:
//dataPacket._byte[1] is len
INPacket._byte[2] = MINOR_VERSION;
INPacket._byte[3] = MAJOR_VERSION;
counter=0x04;
break;
case ID_BOARD:
counter = 0x01;
if(OUTPacket.ID == 0)
{
mLED_3_Off();mLED_4_Off();
}
else if(OUTPacket.ID == 1)
{
mLED_3_Off();mLED_4_On();
}
else if(OUTPacket.ID == 2)
{
mLED_3_On();mLED_4_Off();
}
else if(OUTPacket.ID == 3)
{
mLED_3_On();mLED_4_On();
}
else
counter = 0x00;
break;
case UPDATE_LED:
#if defined(PIC18F87J50_PIM) || defined(PIC18F46J50_PIM) || defined(PIC18F47J53_PIM)
blinkStatusValid = FALSE;
#endif
// LED1 & LED2 are used as USB event indicators.
if(OUTPacket.led_num == 3)
{
if(OUTPacket.led_status)
{
mLED_3_On();
}
else
{
mLED_3_Off();
}
counter = 0x01;
}//end if
else if(OUTPacket.led_num == 4)
{
if(OUTPacket.led_status)
{
mLED_4_On();
}
else
{
mLED_4_Off();
}
counter = 0x01;
}//end if else
break;
case SET_TEMP_REAL:
temp_mode = TEMP_REAL_TIME;
ResetTempLog();
counter = 0x01;
break;
case RD_TEMP:
if(AcquireTemperature())
{
INPacket._byte[1] = temperature.v[0];
INPacket._byte[2] = temperature.v[1];
counter=0x03;
}//end if
break;
case SET_TEMP_LOGGING:
temp_mode = TEMP_LOGGING;
ResetTempLog();
counter=0x01;
break;
case RD_TEMP_LOGGING:
counter = (valid_temp<<1)+2; // Update count in byte
INPacket.len = (valid_temp<<1);
for(index = valid_temp; index > 0; index--)
{
if(pTemp == 0)
pTemp = 29;
else
pTemp--;
INPacket._word[index] = temp_data[pTemp];
}//end for
ResetTempLog(); // Once read, log will restart
break;
case RD_POT:
{
WORD_VAL w;
mInitPOT();
w = ReadPOT();
INPacket._byte[1] = w.v[0];
INPacket._byte[2] = w.v[1];
counter=0x03;
}
break;
case RESET:
Reset();
break;
default:
break;
}//end switch()
if(counter != 0)
{
if(!USBHandleBusy(USBGenericInHandle))
{
USBGenericInHandle = USBGenWrite(USBGEN_EP_NUM,(BYTE*)&INPacket,counter);
}
}//end if
//Re-arm the OUT endpoint for the next packet
USBGenericOutHandle = USBGenRead(USBGEN_EP_NUM,(BYTE*)&OUTPacket,USBGEN_EP_SIZE);
}//end if
}//end ServiceRequests
void CDCTxService(void)
{
BYTE byte_to_send;
BYTE i;
USBMaskInterrupts();
CDCNotificationHandler();
if(USBHandleBusy(CDCDataInHandle))
{
USBUnmaskInterrupts();
return;
}
/*
* Completing stage is necessary while [ mCDCUSartTxIsBusy()==1 ].
* By having this stage, user can always check cdc_trf_state,
* and not having to call mCDCUsartTxIsBusy() directly.
*/
if(cdc_trf_state == CDC_TX_COMPLETING)
cdc_trf_state = CDC_TX_READY;
/*
* If CDC_TX_READY state, nothing to do, just return.
*/
if(cdc_trf_state == CDC_TX_READY)
{
USBUnmaskInterrupts();
return;
}
/*
* If CDC_TX_BUSY_ZLP state, send zero length packet
*/
if(cdc_trf_state == CDC_TX_BUSY_ZLP)
{
CDCDataInHandle = USBTxOnePacket(CDC_DATA_EP,NULL,0);
//CDC_DATA_BD_IN.CNT = 0;
cdc_trf_state = CDC_TX_COMPLETING;
}
else if(cdc_trf_state == CDC_TX_BUSY)
{
/*
* First, have to figure out how many byte of data to send.
*/
if(cdc_tx_len > sizeof(cdc_data_tx))
byte_to_send = sizeof(cdc_data_tx);
else
byte_to_send = cdc_tx_len;
/*
* Subtract the number of bytes just about to be sent from the total.
*/
cdc_tx_len = cdc_tx_len - byte_to_send;
pCDCDst.bRam = (BYTE*)&cdc_data_tx; // Set destination pointer
i = byte_to_send;
if(cdc_mem_type == USB_EP0_ROM) // Determine type of memory source
{
while(i)
{
*pCDCDst.bRam = *pCDCSrc.bRom;
pCDCDst.bRam++;
pCDCSrc.bRom++;
i--;
}//end while(byte_to_send)
}
else // _RAM
{
while(i)
{
*pCDCDst.bRam = *pCDCSrc.bRam;
pCDCDst.bRam++;
pCDCSrc.bRam++;
i--;
}//end while(byte_to_send._word)
}//end if(cdc_mem_type...)
/*
* Lastly, determine if a zero length packet state is necessary.
* See explanation in USB Specification 2.0: Section 5.8.3
*/
if(cdc_tx_len == 0)
{
if(byte_to_send == CDC_DATA_IN_EP_SIZE)
cdc_trf_state = CDC_TX_BUSY_ZLP;
else
cdc_trf_state = CDC_TX_COMPLETING;
}//end if(cdc_tx_len...)
CDCDataInHandle = USBTxOnePacket(CDC_DATA_EP,(BYTE*)&cdc_data_tx,byte_to_send);
}//end if(cdc_tx_sate == CDC_TX_BUSY)
USBUnmaskInterrupts();
}//end CDCTxService
/*********************************************************************************
Function:
BYTE MSDTasks(void)
Summary:
This function runs the MSD class state machines and all of its
sub-systems. This function should be called periodically once the
device is in the configured state in order to keep the MSD state
machine going.
Description:
This function runs the MSD class state machines and all of its
sub-systems. This function should be called periodically once the
device is in the configured state in order to keep the MSD state
machine going.
Typical Usage:
<code>
void main(void)
{
USBDeviceInit();
while(1)
{
USBDeviceTasks();
if((USBGetDeviceState() \< CONFIGURED_STATE) ||
(USBIsDeviceSuspended() == TRUE))
{
//Either the device is not configured or we are suspended
// so we don't want to do execute any application code
continue; //go back to the top of the while loop
}
else
{
//Keep the MSD state machine going
MSDTasks();
//Run application code.
UserApplication();
}
}
}
</code>
Conditions:
None
Return Values:
BYTE - the current state of the MSD state machine the valid values are
defined in MSD.h under the MSDTasks state machine declaration section.
The possible values are the following\:
* MSD_WAIT
* MSD_DATA_IN
* MSD_DATA_OUT
* MSD_SEND_CSW
Remarks:
None
*********************************************************************************/
BYTE MSDTasks(void)
{
BYTE i;
switch(MSD_State)
{
case MSD_WAIT:
{
//If the MSD state machine is waiting for something to happen
if(!USBHandleBusy(USBMSDOutHandle))
{
//If we received an OUT packet from the host
// then copy the data from the buffer to a global
// buffer so that we can keep the information but
// reuse the buffer
gblCBW.dCBWSignature=msd_cbw.dCBWSignature;
gblCBW.dCBWTag=msd_cbw.dCBWTag;
gblCBW.dCBWDataTransferLength=msd_cbw.dCBWDataTransferLength;
gblCBW.bCBWFlags=msd_cbw.bCBWFlags;
gblCBW.bCBWLUN=msd_cbw.bCBWLUN;
gblCBW.bCBWCBLength=msd_cbw.bCBWCBLength; // 3 MSB are zero
for (i=0;i<msd_cbw.bCBWCBLength;i++)
{
gblCBW.CBWCB[i]=msd_cbw.CBWCB[i];
}
gblCBWLength=USBHandleGetLength(USBMSDOutHandle);
//If this CBW is valid?
if ((gblCBWLength==MSD_CBW_SIZE)&&(gblCBW.dCBWSignature==0x43425355))
{
//Is this CBW meaningful?
if((gblCBW.bCBWLUN<=0x0f)
&&(gblCBW.bCBWCBLength<=0x10)
&&(gblCBW.bCBWCBLength>=0x01)
&&(gblCBW.bCBWFlags==0x00||gblCBW.bCBWFlags==0x80))
{
//Prepare the CSW to be sent
msd_csw.dCSWTag=gblCBW.dCBWTag;
msd_csw.dCSWSignature=0x53425355;
//Keep track of retry attempts, in case of temporary failures
//during processing of a command.
MSDRetryAttempt = 0;
//Check the command. With the exception of the REQUEST_SENSE
//command, we should reset the sense key info for each new command block.
//Assume the command will get processed successfully (and hence "NO SENSE"
//response, which is used for success cases), unless handler code
//later on detects some kind of error. If it does, it should
//update the sense keys to reflect the type of error detected,
//prior to sending the CSW.
if(gblCBW.CBWCB[0] != MSD_REQUEST_SENSE)
{
gblSenseData[LUN_INDEX].SenseKey=S_NO_SENSE;
gblSenseData[LUN_INDEX].ASC=ASC_NO_ADDITIONAL_SENSE_INFORMATION;
gblSenseData[LUN_INDEX].ASCQ=ASCQ_NO_ADDITIONAL_SENSE_INFORMATION;
}
/* If direction is device to host*/
if (gblCBW.bCBWFlags==0x80)
{
MSD_State=MSD_DATA_IN;
}
else if (gblCBW.bCBWFlags==0x00)
{
/* If direction is host to device*/
/* prepare to read data in msd_buffer */
MSD_State=MSD_DATA_OUT;
}
}
}
}
break;
}
case MSD_DATA_IN:
if(MSDProcessCommand() == MSD_COMMAND_WAIT)
{
// Done processing the command, send the status
MSD_State = MSD_SEND_CSW;
}
break;
case MSD_DATA_OUT:
if(MSDProcessCommand() == MSD_COMMAND_WAIT)
{
/* Finished receiving the data prepare and send the status */
if ((msd_csw.bCSWStatus==0x00)&&(msd_csw.dCSWDataResidue!=0))
{
msd_csw.bCSWStatus=0x02;
}
MSD_State = MSD_SEND_CSW;
}
break;
case MSD_SEND_CSW:
if(USBHandleBusy(USBMSDInHandle))
{
//The TX buffer is not ready to send the status yet.
break;
}
USBMSDInHandle = USBTxOnePacket(MSD_DATA_IN_EP,(BYTE*)&msd_csw,MSD_CSW_SIZE);
//Get ready for next command to come in
if(!USBHandleBusy(USBMSDOutHandle))
{
USBMSDOutHandle = USBRxOnePacket(MSD_DATA_OUT_EP,(BYTE*)&msd_cbw,sizeof(msd_cbw));
}
MSD_State=MSD_WAIT;
break;
default:
//Illegal condition that should not happen, but might occur if the
//device firmware incorrectly calls MSDTasks() prior to calling
//USBMSDInit() during the set-configuration portion of enumeration.
MSD_State=MSD_WAIT;
}
return MSD_State;
}
