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stm32/usbd_cdc_interface: Handle disconnect IRQ to set VCP disconnected. 

pyb.USB_VCP().isconnected() will now return False if the USB is
disconnected after having previously been connected.

See issue #4210.
This commit is contained in:
Damien George 2018-10-15 12:24:40 +11:00
parent de71035e02
commit 53ccbe6cec
3 changed files with 10 additions and 0 deletions
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5
ports/stm32/usbd_cdc_interface.c
View File

@ -81,6 +81,11 @@ uint8_t *usbd_cdc_init(usbd_cdc_state_t *cdc_in) {
return cdc->rx_packet_buf;
}
void usbd_cdc_deinit(usbd_cdc_state_t *cdc_in) {
usbd_cdc_itf_t *cdc = (usbd_cdc_itf_t*)cdc_in;
cdc->dev_is_connected = 0;
}
// Manage the CDC class requests
// cmd: command code
// pbuf: buffer containing command data (request parameters)

1
ports/stm32/usbdev/class/inc/usbd_cdc_msc_hid.h
View File

@ -185,6 +185,7 @@ uint8_t USBD_HID_ClearNAK(usbd_hid_state_t *usbd);
// These are provided externally to implement the CDC interface
uint8_t *usbd_cdc_init(usbd_cdc_state_t *cdc);
void usbd_cdc_deinit(usbd_cdc_state_t *cdc);
int8_t usbd_cdc_control(usbd_cdc_state_t *cdc, uint8_t cmd, uint8_t* pbuf, uint16_t length);
int8_t usbd_cdc_receive(usbd_cdc_state_t *cdc, size_t len);

4
ports/stm32/usbdev/class/src/usbd_cdc_msc_hid.c
View File

@ -820,6 +820,8 @@ static uint8_t USBD_CDC_MSC_HID_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
if ((usbd->usbd_mode & USBD_MODE_CDC) && usbd->cdc) {
// CDC VCP component
usbd_cdc_deinit(usbd->cdc);
// close endpoints
USBD_LL_CloseEP(pdev, CDC_IN_EP);
USBD_LL_CloseEP(pdev, CDC_OUT_EP);
@ -830,6 +832,8 @@ static uint8_t USBD_CDC_MSC_HID_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
if ((usbd->usbd_mode & USBD_MODE_CDC2) && usbd->cdc2) {
// CDC VCP #2 component
usbd_cdc_deinit(usbd->cdc2);
// close endpoints
USBD_LL_CloseEP(pdev, CDC2_IN_EP);
USBD_LL_CloseEP(pdev, CDC2_OUT_EP);