/**
* USB CDC class request handler.
* This is an internal function.
*/
static void USB_VirtualCOM_HandleClassRequest() {
USB_SetupPacket_t setupPacket;
USBD_GetSetupPacket((uint8_t *) &setupPacket);
if(setupPacket.bmRequestType & 0x80) {
// Transfer direction: device to host
switch(setupPacket.bRequest) {
case USB_VCOM_REQ_GET_LINE_CODE:
if(setupPacket.wIndex == USB_VCOM_INDEX) {
// Copy line coding data to USB buffer
USBD_MemCopy((uint8_t *) (USBD_BUF_BASE + USB_VCOM_CTRL_IN_BUF_BASE),
(uint8_t *) &USB_VirtualCOM_lineCoding, USB_VirtualCOM_LineCoding_t_SIZE);
}
// Data stage
USBD_SET_DATA1(USB_VCOM_CTRL_IN_EP);
USBD_SET_PAYLOAD_LEN(USB_VCOM_CTRL_IN_EP, USB_VirtualCOM_LineCoding_t_SIZE);
// Status stage
USBD_PrepareCtrlOut(NULL, 0);
break;
default:
// Setup error, stall the device
USBD_SetStall(USB_VCOM_CTRL_IN_EP);
USBD_SetStall(USB_VCOM_CTRL_OUT_EP);
break;
}
}
else {
// Transfer direction: host to device
switch(setupPacket.bRequest) {
case USB_VCOM_REQ_SET_CONTROL_LINE_STATE:
// Control signals are ignored
// Status stage
USBD_SET_DATA1(USB_VCOM_CTRL_IN_EP);
USBD_SET_PAYLOAD_LEN(USB_VCOM_CTRL_IN_EP, 0);
break;
case USB_VCOM_REQ_SET_LINE_CODE:
if(setupPacket.wIndex == USB_VCOM_INDEX) {
// Prepare for line coding copy
USBD_PrepareCtrlOut((uint8_t *) &USB_VirtualCOM_lineCoding, USB_VirtualCOM_LineCoding_t_SIZE);
}
// Status stage
USBD_SET_DATA1(USB_VCOM_CTRL_IN_EP);
USBD_SET_PAYLOAD_LEN(USB_VCOM_CTRL_IN_EP, 0);
break;
default:
// Setup error, stall the device
USBD_SetStall(USB_VCOM_CTRL_IN_EP);
USBD_SetStall(USB_VCOM_CTRL_OUT_EP);
break;
}
}
}
void CCID_ClassRequest(void)
{
uint8_t buf[8];
USBD_GetSetupPacket(buf);
if (buf[0] & 0x80) /* request data transfer direction */
{
// Device to host
switch (buf[1])
{
case CCID_GET_CLOCK_FREQUENCIES:
case CCID_GET_DATA_RATES:
{
uint8_t pData[1] = {0};
USBD_MemCopy((uint8_t *)(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)), pData, sizeof(pData));
/* Data stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, sizeof(pData));
/* Status stage */
USBD_PrepareCtrlOut(0,0);
break;
}
default:
{
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
else
{
// Host to device
switch (buf[1])
{
case CCID_ABORT:
{
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
break;
}
default:
{
// Stall
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
}
void PTR_ClassRequest(void)
{
uint8_t buf[8];
USBD_GetSetupPacket(buf);
if (buf[0] & 0x80) { /* request data transfer direction */
// Device to host
switch (buf[1]) {
case GET_PORT_STATUS: {
/* Data stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
/* Status stage */
USBD_PrepareCtrlOut(0,0);
break;
}
default: {
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
} else {
// Host to device
switch (buf[1]) {
case SET_REPORT: {
if (buf[3] == 3) {
/* Request Type = Feature */
USBD_SET_DATA1(EP1);
USBD_SET_PAYLOAD_LEN(EP1, 0);
}
break;
}
case SET_IDLE: {
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
break;
}
case SET_PROTOCOL:
// {
// break;
// }
default: {
// Stall
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
}
/**
* @brief Repeat Control IN pipe
*
* @param None
*
* @return None
*
* @details This function processes the remained data of Control IN transfer.
*
*/
void USBD_CtrlIn(void)
{
static uint8_t u8ZeroFlag = 0;
if(g_usbd_CtrlInSize)
{
// Process remained data
if(g_usbd_CtrlInSize > g_usbd_CtrlMaxPktSize)
{
// Data size > MXPLD
USBD_MemCopy((uint8_t *)USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0), (uint8_t *)g_usbd_CtrlInPointer, g_usbd_CtrlMaxPktSize);
USBD_SET_PAYLOAD_LEN(EP0, g_usbd_CtrlMaxPktSize);
g_usbd_CtrlInPointer += g_usbd_CtrlMaxPktSize;
g_usbd_CtrlInSize -= g_usbd_CtrlMaxPktSize;
}
else
{
// Data size <= MXPLD
USBD_MemCopy((uint8_t *)USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0), (uint8_t *)g_usbd_CtrlInPointer, g_usbd_CtrlInSize);
USBD_SET_PAYLOAD_LEN(EP0, g_usbd_CtrlInSize);
if(g_usbd_CtrlInSize == g_usbd_CtrlMaxPktSize)
u8ZeroFlag = 1;
g_usbd_CtrlInPointer = 0;
g_usbd_CtrlInSize = 0;
}
}
else
{
// In ACK for Set address
if((g_usbd_SetupPacket[0] == 0) && (g_usbd_SetupPacket[1] == 5))
{
if((USBD_GET_ADDR() != g_usbd_UsbAddr) && (USBD_GET_ADDR() == 0))
{
USBD_SET_ADDR(g_usbd_UsbAddr);
}
}
// For size if n x MXPLD
if(u8ZeroFlag)
{
USBD_SET_PAYLOAD_LEN(EP0, 0);
u8ZeroFlag = 0;
}
// No more data for IN token
USBD_PrepareCtrlOut(0, 0);
DBG_PRINTF("Ctrl In Done.\n");
}
}
/**
* @brief Process standard request
*
* @param None
*
* @return None
*
* @details Parse standard request and perform the corresponding action.
*
*/
void USBD_StandardRequest(void)
{
/* clear global variables for new request */
g_usbd_CtrlInPointer = 0;
g_usbd_CtrlInSize = 0;
if(g_usbd_SetupPacket[0] & 0x80) /* request data transfer direction */
{
// Device to host
switch(g_usbd_SetupPacket[1])
{
case GET_CONFIGURATION:
{
// Return current configuration setting
/* Data stage */
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = g_usbd_UsbConfig;
USBD_SET_DATA1(EP1);
USBD_SET_PAYLOAD_LEN(EP1, 0);
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 1);
/* Status stage */
USBD_PrepareCtrlOut(0, 0);
DBG_PRINTF("Get configuration\n");
break;
}
case GET_DESCRIPTOR:
{
USBD_GetDescriptor();
break;
}
case GET_INTERFACE:
{
// Return current interface setting
/* Data stage */
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = g_usbd_UsbAltInterface;
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 1);
/* Status stage */
USBD_PrepareCtrlOut(0, 0);
DBG_PRINTF("Get interface\n");
break;
}
case GET_STATUS:
{
// Device
if(g_usbd_SetupPacket[0] == 0x80)
{
uint8_t u8Tmp;
u8Tmp = 0;
if(g_usbd_sInfo->gu8ConfigDesc[7] & 0x40) u8Tmp |= 1; // Self-Powered/Bus-Powered.
if(g_usbd_sInfo->gu8ConfigDesc[7] & 0x20) u8Tmp |= (g_usbd_RemoteWakeupEn << 1); // Remote wake up
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = u8Tmp;
}
// Interface
else if(g_usbd_SetupPacket[0] == 0x81)
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = 0;
// Endpoint
else if(g_usbd_SetupPacket[0] == 0x82)
{
uint8_t ep = g_usbd_SetupPacket[4] & 0xF;
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = USBD_GetStall(ep) ? 1 : 0;
}
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0) + 1) = 0;
/* Data stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 2);
/* Status stage */
USBD_PrepareCtrlOut(0, 0);
DBG_PRINTF("Get status\n");
break;
}
default:
{
/* Setup error, stall the device */
USBD_SET_EP_STALL(EP0);
USBD_SET_EP_STALL(EP1);
DBG_PRINTF("Unknown request. stall ctrl pipe.\n");
break;
}
}
}
else
{
// Host to device
switch(g_usbd_SetupPacket[1])
{
case CLEAR_FEATURE:
{
if(g_usbd_SetupPacket[2] == FEATURE_ENDPOINT_HALT)
{
int32_t epNum, i;
/* EP number stall is not allow to be clear in MSC class "Error Recovery Test".
a flag: g_u32EpStallLock is added to support it */
epNum = g_usbd_SetupPacket[4] & 0xF;
for(i = 0; i < USBD_MAX_EP; i++)
{
if(((USBD->EP[i].CFG & 0xF) == epNum) && ((g_u32EpStallLock & (1 << i)) == 0))
{
USBD->EP[i].CFGP &= ~USBD_CFGP_SSTALL_Msk;
DBG_PRINTF("Clr stall ep%d %x\n",i, USBD->EP[i].CFGP);
}
}
}
else if(g_usbd_SetupPacket[2] == FEATURE_DEVICE_REMOTE_WAKEUP)
g_usbd_RemoteWakeupEn = 0;
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
DBG_PRINTF("Clear feature op %d\n", g_usbd_SetupPacket[2]);
break;
}
case SET_ADDRESS:
{
g_usbd_UsbAddr = g_usbd_SetupPacket[2];
DBG_PRINTF("Set addr to %d\n", g_usbd_UsbAddr);
// DATA IN for end of setup
/* Status Stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
break;
}
case SET_CONFIGURATION:
{
g_usbd_UsbConfig = g_usbd_SetupPacket[2];
if(g_usbd_pfnSetConfigCallback)
g_usbd_pfnSetConfigCallback();
// DATA IN for end of setup
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
DBG_PRINTF("Set config to %d\n", g_usbd_UsbConfig);
break;
}
case SET_FEATURE:
{
if(g_usbd_SetupPacket[2] == FEATURE_ENDPOINT_HALT)
{
USBD_SetStall(g_usbd_SetupPacket[4] & 0xF);
DBG_PRINTF("Set feature. stall ep %d\n", g_usbd_SetupPacket[4] & 0xF);
}
else if(g_usbd_SetupPacket[2] == FEATURE_DEVICE_REMOTE_WAKEUP)
{
g_usbd_RemoteWakeupEn = 1;
DBG_PRINTF("Set feature. enable remote wakeup\n");
}
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
break;
}
case SET_INTERFACE:
{
g_usbd_UsbAltInterface = g_usbd_SetupPacket[2];
if(g_usbd_pfnSetInterface != NULL)
g_usbd_pfnSetInterface();
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
DBG_PRINTF("Set interface to %d\n", g_usbd_UsbAltInterface);
break;
}
default:
{
/* Setup error, stall the device */
USBD_SET_EP_STALL(EP0);
USBD_SET_EP_STALL(EP1);
DBG_PRINTF("Unsupported request. stall ctrl pipe.\n");
break;
}
}
}
}
/**
* @brief Process GetDescriptor request
*
* @param None
*
* @return None
*
* @details Parse GetDescriptor request and perform the corresponding action.
*
*/
void USBD_GetDescriptor(void)
{
uint32_t u32Len;
u32Len = 0;
u32Len = g_usbd_SetupPacket[7];
u32Len <<= 8;
u32Len += g_usbd_SetupPacket[6];
switch(g_usbd_SetupPacket[3])
{
// Get Device Descriptor
case DESC_DEVICE:
{
u32Len = Minimum(u32Len, LEN_DEVICE);
DBG_PRINTF("Get device desc, %d\n", u32Len);
USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8DevDesc, u32Len);
USBD_PrepareCtrlOut(0, 0);
break;
}
// Get Configuration Descriptor
case DESC_CONFIG:
{
uint32_t u32TotalLen;
u32TotalLen = g_usbd_sInfo->gu8ConfigDesc[3];
u32TotalLen = g_usbd_sInfo->gu8ConfigDesc[2] + (u32TotalLen << 8);
DBG_PRINTF("Get config desc len %d, acture len %d\n", u32Len, u32TotalLen);
u32Len = Minimum(u32Len, u32TotalLen);
DBG_PRINTF("Minimum len %d\n", u32Len);
USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8ConfigDesc, u32Len);
USBD_PrepareCtrlOut(0, 0);
break;
}
// Get HID Descriptor
case DESC_HID:
{
int32_t i32IfNum;
int32_t i32TotalSize;
int32_t i32Idx;
uint8_t *pu8HidDesc;
int32_t i32Size = 0;
// Get total size of configuration descriptor
i32TotalSize = g_usbd_sInfo->gu8ConfigDesc[3];
i32TotalSize = (i32TotalSize << 8) | g_usbd_sInfo->gu8ConfigDesc[2];
// Get requested HID interface
i32IfNum = g_usbd_SetupPacket[4];
// Search specified HID descriptor in configuration descritpor
pu8HidDesc = NULL;
i32Idx = 1;
do{
// Search interface first and check HID class code (0x3) and check requested interface number
if((g_usbd_sInfo->gu8ConfigDesc[i32Idx] == DESC_INTERFACE) &&
(g_usbd_sInfo->gu8ConfigDesc[i32Idx+4] == 0x3) &&
(g_usbd_sInfo->gu8ConfigDesc[i32Idx+1] == i32IfNum))
{
// Calculate the offset of the requested HID descriptor in configuration descriptor
i32Idx = i32Idx-1+g_usbd_sInfo->gu8ConfigDesc[i32Idx-1];
pu8HidDesc = (uint8_t *)&g_usbd_sInfo->gu8ConfigDesc[i32Idx];
i32Size = pu8HidDesc[0];
DBG_PRINTF("HID desc at if=%d, offset=%d\n", i32IfNum, i32Idx);
break;
}
else
i32Idx += g_usbd_sInfo->gu8ConfigDesc[i32Idx-1]; // Seek to next descriptor
}while(i32Idx < i32TotalSize);
if(pu8HidDesc)
{
u32Len = Minimum(u32Len, i32Size);
USBD_PrepareCtrlIn(pu8HidDesc, u32Len);
USBD_PrepareCtrlOut(0, 0);
}
else
{
// No any HID descriptor found. Just stall.
USBD_SET_EP_STALL(EP0);
USBD_SET_EP_STALL(EP1);
DBG_PRINTF("No HID desc found. stall ctrl pipe\n");
}
break;
}
// Get Report Descriptor
case DESC_HID_RPT:
{
uint32_t u32RptDescLen;
uint8_t *pu8RptDesc;
if(g_usbd_pfnGetHidReportCallback)
pu8RptDesc = g_usbd_pfnGetHidReportCallback(g_usbd_SetupPacket[4] ,&u32RptDescLen);
else
{
pu8RptDesc = (uint8_t *)g_usbd_sInfo->gu8HidReportDesc;
u32RptDescLen = u32Len;
}
if(pu8RptDesc)
{
u32Len = Minimum(u32Len, u32RptDescLen);
DBG_PRINTF("Get report desc %d\n", u32Len);
USBD_PrepareCtrlIn(pu8RptDesc, u32Len);
USBD_PrepareCtrlOut(0, 0);
}
else
{
USBD_SET_EP_STALL(EP0);
USBD_SET_EP_STALL(EP1);
DBG_PRINTF("No HID report. stall ctrl pipe\n");
}
break;
}
// Get String Descriptor
case DESC_STRING:
{
// Get String Descriptor
if(g_usbd_SetupPacket[2] < 4)
{
u32Len = Minimum(u32Len, g_usbd_sInfo->gu8StringDesc[g_usbd_SetupPacket[2]][0]);
DBG_PRINTF("Get string desc %d\n", u32Len);
USBD_PrepareCtrlIn((uint8_t *)g_usbd_sInfo->gu8StringDesc[g_usbd_SetupPacket[2]], u32Len);
USBD_PrepareCtrlOut(0, 0);
break;
}
else
{
// Not support. Reply STALL.
USBD_SET_EP_STALL(EP0);
USBD_SET_EP_STALL(EP1);
DBG_PRINTF("Unsupported string desc (%d). Stall ctrl pipe.\n", g_usbd_SetupPacket[2]);
break;
}
}
default:
// Not support. Reply STALL.
USBD_SET_EP_STALL(EP0);
USBD_SET_EP_STALL(EP1);
DBG_PRINTF("Unsupported get desc type. stall ctrl pipe\n");
break;
}
}
void HID_ClassRequest(void)
{
uint8_t buf[8];
USBD_GetSetupPacket(buf);
if (buf[0] & 0x80) /* request data transfer direction */
{
// Device to host
switch (buf[1])
{
case GET_LINE_CODE:
{
if (buf[4] == 0) /* VCOM-1 */
{
USBD_MemCopy((uint8_t *)(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)), (uint8_t *)&gLineCoding, 7);
}
/* Data stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 7);
/* Status stage */
USBD_PrepareCtrlOut(0,0);
break;
}
case GET_REPORT:
case GET_IDLE:
case GET_PROTOCOL:
default:
{
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
else
{
// Host to device
switch (buf[1])
{
case SET_CONTROL_LINE_STATE:
{
if (buf[4] == 0) /* VCOM-1 */
{
gCtrlSignal = buf[3];
gCtrlSignal = (gCtrlSignal << 8) | buf[2];
//printf("RTS=%d DTR=%d\n", (gCtrlSignal0 >> 1) & 1, gCtrlSignal0 & 1);
}
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
break;
}
case SET_LINE_CODE:
{
//g_usbd_UsbConfig = 0100;
if (buf[4] == 0) /* VCOM-1 */
USBD_PrepareCtrlOut((uint8_t *)&gLineCoding, 7);
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
// /* UART setting */
// if (buf[4] == 0) /* VCOM-1 */
// VCOM_LineCoding(0);
break;
}
case SET_REPORT:
{
if(buf[3] == 2)
{
/* Request Type = Output */
USBD_SET_DATA1(EP1);
USBD_SET_PAYLOAD_LEN(EP1, buf[6]);
/* Trigger for HID Int in */
USBD_SET_PAYLOAD_LEN(EP5, 0);
/* Status stage */
USBD_PrepareCtrlIn(0, 0);
}
break;
}
case SET_IDLE:
{
/* Status stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
break;
}
case SET_PROTOCOL:
default:
{
// Stall
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
}
void MSC_ClassRequest(void)
{
uint8_t buf[8];
USBD_GetSetupPacket(buf);
if (buf[0] & 0x80) /* request data transfer direction */
{
// Device to host
switch (buf[1])
{
case GET_MAX_LUN:
{
/* Check interface number with cfg descriptor and check wValue = 0, wLength = 1 */
if ((((buf[3]<<8)+buf[2]) == 0) && (((buf[5]<<8)+buf[4]) == 0) && (((buf[7]<<8)+buf[6]) == 1))
{
M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = 0;
/* Data stage */
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 1);
/* Status stage */
USBD_PrepareCtrlOut(0,0);
}
else /* Invalid Get MaxLun command */
{
USBD_SetStall(0);
}
break;
}
default:
{
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
else
{
// Host to device
switch (buf[1])
{
case BULK_ONLY_MASS_STORAGE_RESET:
{
/* Check interface number with cfg descriptor and check wValue = 0, wLength = 0 */
if ((((buf[3]<<8)+buf[2]) == 0) && (((buf[5]<<8)+buf[4]) == 0) && (((buf[7]<<8)+buf[6]) == 0))
{
USBD_SET_DATA1(EP0);
USBD_SET_PAYLOAD_LEN(EP0, 0);
USBD_LockEpStall(0);
/* Clear ready */
USBD->EP[EP2].CFG |= USBD_CFG_CLRRDY_Msk;
USBD->EP[EP3].CFG |= USBD_CFG_CLRRDY_Msk;
/* Prepare to receive the CBW */
g_u8EP3Ready = 0;
g_u8BulkState = BULK_CBW;
USBD_SET_DATA1(EP3);
USBD_SET_EP_BUF_ADDR(EP3, g_u32BulkBuf0);
USBD_SET_PAYLOAD_LEN(EP3, EP3_MAX_PKT_SIZE);
}
else /* Invalid Reset command */
{
USBD_SetStall(0);
}
break;
}
default:
{
// Stall
/* Setup error, stall the device */
USBD_SetStall(0);
break;
}
}
}
}