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Detect VCP line state.

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* Detect VCP line state, based on SET_CONTROL_LINE_STATE request
This commit is contained in:
mux 2014-02-01 13:26:04 +02:00
parent 532f2c30f6
commit b2269b610e
3 changed files with 9 additions and 2 deletions
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4
stm/stmusbd/usbd_cdc_vcp.c
View File

@ -62,6 +62,8 @@ static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len);
static uint16_t VCP_DataTx (const uint8_t* Buf, uint32_t Len); static uint16_t VCP_DataTx (const uint8_t* Buf, uint32_t Len);
static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len); static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len);
extern int dev_is_connected;
CDC_IF_Prop_TypeDef VCP_fops = CDC_IF_Prop_TypeDef VCP_fops =
{ {
VCP_Init, VCP_Init,
@ -158,7 +160,7 @@ static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len)
break; break;
case SET_CONTROL_LINE_STATE: case SET_CONTROL_LINE_STATE:
/* Not needed for this driver */ dev_is_connected = Len & 0x1; //wValue passed in Len
break; break;
case SEND_BREAK: case SEND_BREAK:

2
stm/stmusbd/usbd_pyb_core.c
View File

@ -648,7 +648,7 @@ static uint8_t usbd_pyb_Setup(void *pdev, USB_SETUP_REQ *req) {
// Not a Data request // Not a Data request
// Transfer the command to the interface layer */ // Transfer the command to the interface layer */
return VCP_fops.pIf_Ctrl(req->bRequest, NULL, 0); return VCP_fops.pIf_Ctrl(req->bRequest, NULL, req->wValue);
} }
} else if (req->wIndex == 2) { } else if (req->wIndex == 2) {

5
stm/usb.c
View File

@ -20,6 +20,7 @@ extern CDC_IF_Prop_TypeDef VCP_fops;
USB_OTG_CORE_HANDLE USB_OTG_Core; USB_OTG_CORE_HANDLE USB_OTG_Core;
static int dev_is_enabled = 0; static int dev_is_enabled = 0;
int dev_is_connected=0; /* used by usbd_cdc_vcp */
static char rx_buf[64]; static char rx_buf[64];
static int rx_buf_in; static int rx_buf_in;
static int rx_buf_out; static int rx_buf_out;
@ -41,6 +42,10 @@ bool usb_vcp_is_enabled(void) {
return dev_is_enabled; return dev_is_enabled;
} }
bool usb_vcp_is_connected(void) {
return dev_is_connected;
}
void usb_vcp_receive(const char *buf, uint32_t len) { void usb_vcp_receive(const char *buf, uint32_t len) {
if (dev_is_enabled) { if (dev_is_enabled) {
for (int i = 0; i < len; i++) { for (int i = 0; i < len; i++) {