/* USB main task. Performs enumeration/cleanup */
void USB::Task( void ) //USB state machine
{
byte i;
byte rcode;
static byte tmpaddr;
byte tmpdata;
static unsigned long delay = 0;
USB_DEVICE_DESCRIPTOR buf;
tmpdata = getVbusState();
/* modify USB task state if Vbus changed */
switch( tmpdata ) {
case SE1: //illegal state
usb_task_state = USB_DETACHED_SUBSTATE_ILLEGAL;
break;
case SE0: //disconnected
if(( usb_task_state & USB_STATE_MASK ) != USB_STATE_DETACHED ) {
usb_task_state = USB_DETACHED_SUBSTATE_INITIALIZE;
}
break;
case FSHOST: //attached
case LSHOST:
if(( usb_task_state & USB_STATE_MASK ) == USB_STATE_DETACHED ) {
delay = millis() + USB_SETTLE_DELAY;
usb_task_state = USB_ATTACHED_SUBSTATE_SETTLE;
}
break;
}// switch( tmpdata
//Serial.print("USB task state: ");
//Serial.println( usb_task_state, HEX );
switch( usb_task_state ) {
case USB_DETACHED_SUBSTATE_INITIALIZE:
init();
usb_task_state = USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE;
break;
case USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE: //just sit here
break;
case USB_DETACHED_SUBSTATE_ILLEGAL: //just sit here
break;
case USB_ATTACHED_SUBSTATE_SETTLE: //setlle time for just attached device
if( delay < millis() ) {
usb_task_state = USB_ATTACHED_SUBSTATE_RESET_DEVICE;
}
break;
case USB_ATTACHED_SUBSTATE_RESET_DEVICE:
regWr( rHCTL, bmBUSRST ); //issue bus reset
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE;
break;
case USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE:
if(( regRd( rHCTL ) & bmBUSRST ) == 0 ) {
tmpdata = regRd( rMODE ) | bmSOFKAENAB; //start SOF generation
regWr( rMODE, tmpdata );
// regWr( rMODE, bmSOFKAENAB );
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_SOF;
delay = millis() + 20; //20ms wait after reset per USB spec
}
break;
case USB_ATTACHED_SUBSTATE_WAIT_SOF: //todo: change check order
if( regRd( rHIRQ ) & bmFRAMEIRQ ) { //when first SOF received we can continue
if( delay < millis() ) { //20ms passed
usb_task_state = USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE;
}
}
break;
case USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE:
// toggle( BPNT_0 );
devtable[ 0 ].epinfo->MaxPktSize = 8; //set max.packet size to min.allowed
rcode = getDevDescr( 0, 0, 8, ( char* )&buf );
if( rcode == 0 ) {
devtable[ 0 ].epinfo->MaxPktSize = buf.bMaxPacketSize0;
usb_task_state = USB_STATE_ADDRESSING;
}
else {
usb_error = USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE;
usb_task_state = USB_STATE_ERROR;
}
break;
case USB_STATE_ADDRESSING:
for( i = 1; i < USB_NUMDEVICES; i++ ) {
if( devtable[ i ].epinfo == NULL ) {
devtable[ i ].epinfo = devtable[ 0 ].epinfo; //set correct MaxPktSize
//temporary record
//until plugged with real device endpoint structure
rcode = setAddr( 0, 0, i );
if( rcode == 0 ) {
tmpaddr = i;
usb_task_state = USB_STATE_CONFIGURING;
}
else {
usb_error = USB_STATE_ADDRESSING; //set address error
usb_task_state = USB_STATE_ERROR;
}
break; //break if address assigned or error occured during address assignment attempt
}
}//for( i = 1; i < USB_NUMDEVICES; i++
if( usb_task_state == USB_STATE_ADDRESSING ) { //no vacant place in devtable
usb_error = 0xfe;
usb_task_state = USB_STATE_ERROR;
}
break;
case USB_STATE_CONFIGURING:
break;
case USB_STATE_RUNNING:
break;
case USB_STATE_ERROR:
break;
}// switch( usb_task_state
}
/* USB main task. Performs enumeration/cleanup */
void USB::Task(void) //USB state machine
{
uint8_t rcode;
uint8_t tmpdata;
static unsigned long delay = 0;
//USB_DEVICE_DESCRIPTOR buf;
bool lowspeed = false;
MAX3421E::Task();
tmpdata = getVbusState();
/* modify USB task state if Vbus changed */
switch(tmpdata) {
case SE1: //illegal state
usb_task_state = USB_DETACHED_SUBSTATE_ILLEGAL;
lowspeed = false;
break;
case SE0: //disconnected
if((usb_task_state & USB_STATE_MASK) != USB_STATE_DETACHED)
usb_task_state = USB_DETACHED_SUBSTATE_INITIALIZE;
lowspeed = false;
break;
case LSHOST:
lowspeed = true;
//intentional fallthrough
case FSHOST: //attached
if((usb_task_state & USB_STATE_MASK) == USB_STATE_DETACHED) {
delay = millis() + USB_SETTLE_DELAY;
usb_task_state = USB_ATTACHED_SUBSTATE_SETTLE;
}
break;
}// switch( tmpdata
for(uint8_t i = 0; i < USB_NUMDEVICES; i++)
if(devConfig[i])
rcode = devConfig[i]->Poll();
switch(usb_task_state) {
case USB_DETACHED_SUBSTATE_INITIALIZE:
init();
for(uint8_t i = 0; i < USB_NUMDEVICES; i++)
if(devConfig[i])
rcode = devConfig[i]->Release();
usb_task_state = USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE;
break;
case USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE: //just sit here
break;
case USB_DETACHED_SUBSTATE_ILLEGAL: //just sit here
break;
case USB_ATTACHED_SUBSTATE_SETTLE: //settle time for just attached device
if(delay < millis())
usb_task_state = USB_ATTACHED_SUBSTATE_RESET_DEVICE;
else break; // don't fall through
case USB_ATTACHED_SUBSTATE_RESET_DEVICE:
regWr(rHCTL, bmBUSRST); //issue bus reset
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE;
break;
case USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE:
if((regRd(rHCTL) & bmBUSRST) == 0) {
tmpdata = regRd(rMODE) | bmSOFKAENAB; //start SOF generation
regWr(rMODE, tmpdata);
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_SOF;
//delay = millis() + 20; //20ms wait after reset per USB spec
}
break;
case USB_ATTACHED_SUBSTATE_WAIT_SOF: //todo: change check order
if(regRd(rHIRQ) & bmFRAMEIRQ) {
//when first SOF received _and_ 20ms has passed we can continue
/*
if (delay < millis()) //20ms passed
usb_task_state = USB_STATE_CONFIGURING;
*/
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_RESET;
delay = millis() + 20;
}
break;
case USB_ATTACHED_SUBSTATE_WAIT_RESET:
if(delay < millis()) usb_task_state = USB_STATE_CONFIGURING;
else break; // don't fall through
case USB_STATE_CONFIGURING:
//Serial.print("\r\nConf.LS: ");
//Serial.println(lowspeed, HEX);
rcode = Configuring(0, 0, lowspeed);
if(rcode) {
if(rcode != USB_DEV_CONFIG_ERROR_DEVICE_INIT_INCOMPLETE) {
usb_error = rcode;
usb_task_state = USB_STATE_ERROR;
}
} else
usb_task_state = USB_STATE_RUNNING;
break;
case USB_STATE_RUNNING:
break;
case USB_STATE_ERROR:
//MAX3421E::Init();
break;
} // switch( usb_task_state )
}
/* USB main task. Performs enumeration/cleanup */
void USB::Task(USB_OTG_CORE_HANDLE *pdev) //USB state machine
{
uint8_t rcode;
uint8_t tmpdata;
static unsigned long delay = 0;
bool lowspeed = false;
STM32F2::Task();
tmpdata = getVbusState();
/* modify USB task state if Vbus changed */
switch (tmpdata) {
case SE1: //illegal state
usb_task_state = USB_DETACHED_SUBSTATE_ILLEGAL;
lowspeed = false;
break;
case SE0: //disconnected
if ((usb_task_state & USB_STATE_MASK) != USB_STATE_DETACHED)
usb_task_state = USB_DETACHED_SUBSTATE_INITIALIZE;
lowspeed = false;
break;
case LSHOST:
// if ((usb_task_state & USB_STATE_MASK) == USB_STATE_DETACHED) {
lowspeed = true;
// }
case FSHOST: //attached
if ((usb_task_state & USB_STATE_MASK) == USB_STATE_DETACHED) {
delay = millis() + USB_SETTLE_DELAY;
usb_task_state = USB_ATTACHED_SUBSTATE_SETTLE;
STM_EVAL_LEDToggle(LED1);
}
break;
}// switch( tmpdata
for (uint8_t i = 0; i < USB_NUMDEVICES; i++)
if (devConfig[i])
rcode = devConfig[i]->Poll();
switch (usb_task_state) {
case USB_DETACHED_SUBSTATE_INITIALIZE:
init();
for (uint8_t i = 0; i < USB_NUMDEVICES; i++)
if (devConfig[i])
rcode = devConfig[i]->Release();
usb_task_state = USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE;
break;
case USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE: //just sit here
break;
case USB_DETACHED_SUBSTATE_ILLEGAL: //just sit here
break;
case USB_ATTACHED_SUBSTATE_SETTLE: //settle time for just attached device
if (delay < millis())
usb_task_state = USB_ATTACHED_SUBSTATE_RESET_DEVICE;
break;
case USB_ATTACHED_SUBSTATE_RESET_DEVICE:
STM_EVAL_LEDToggle(LED1);
//regWr(rHCTL, bmBUSRST); //issue bus reset
// what if i want to reset the specified device? (need to survey usb hub feature later)
pdev->host.SofHits = 0;
HCD_ResetPort();
//usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE;
// the HCD_ResetPort() function will take care of a complete bus reset. so skip next phase.
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_SOF;
break;
/* case USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE:
if ((regRd(rHCTL) & bmBUSRST) == 0) {
tmpdata = regRd(rMODE) | bmSOFKAENAB; //start SOF generation
regWr(rMODE, tmpdata);
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_SOF;
//delay = millis() + 20; //20ms wait after reset per USB spec
}
break;*/
case USB_ATTACHED_SUBSTATE_WAIT_SOF: //todo: change check order
if(pdev->host.port_need_reset) {
usb_task_state = USB_ATTACHED_SUBSTATE_RESET_DEVICE;
pdev->host.port_need_reset = 0;
printf("\nLS Dev, reset again");
break;
}
STM_EVAL_LEDToggle(LED1);
//if (regRd(rHIRQ) & bmFRAMEIRQ) {
if(pdev->host.SofHits) {
//when first SOF received _and_ 20ms has passed we can continue
usb_task_state = USB_ATTACHED_SUBSTATE_WAIT_RESET;
delay = millis() + 20;
}
break;
case USB_ATTACHED_SUBSTATE_WAIT_RESET:
if (delay < millis()) {
usb_task_state = USB_STATE_CONFIGURING;
}
break;
case USB_STATE_CONFIGURING:
STM_EVAL_LEDToggle(LED1);
//Serial.print("\r\nConf.LS: ");
//Serial.println(lowspeed, HEX);
printf("\nTODO:Support all 8 USB pipe?");
rcode = Configuring(0, 0, lowspeed);
if (rcode) {
if (rcode != USB_DEV_CONFIG_ERROR_DEVICE_INIT_INCOMPLETE) {
usb_error = rcode;
usb_task_state = USB_STATE_ERROR;
}
} else
usb_task_state = USB_STATE_RUNNING;
break;
case USB_STATE_RUNNING:
break;
case USB_STATE_ERROR:
//MAX3421E::Init();
AddressPool &addrPool = GetAddressPool();
// Get pointer to pseudo device with address 0 assigned
UsbDevice *p = addrPool.GetUsbDevicePtr(0);
USBH_Free_Channel(pdev, p->epinfo->hcNumOut);
USBH_Free_Channel(pdev, p->epinfo->hcNumIn);
break;
} // switch( usb_task_state )
}
