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Do not send further USB packets when connections is stale

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This commit is contained in:
Jan Käberich 2022-10-31 15:09:00 +01:00
parent 6500f67b5e
commit 39a91034d9
2 changed files with 17 additions and 2 deletions
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15
Software/VNA_embedded/Application/Drivers/USB/usb.c
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@ -24,6 +24,9 @@ static uint16_t usb_transmit_read_index = 0;
static uint16_t usb_transmit_fifo_level = 0;
static bool data_transmission_active = false;
static bool log_transmission_active = true;
static uint32_t last_transmission = 0;
#define USB_TRANMISSION_TIMEOUT 100
USBD_ClassTypeDef USBD_ClassDriver =
{
@ -162,6 +165,14 @@ static bool trigger_next_fifo_transmission() {
return USBD_LL_Transmit(&hUsbDeviceFS, EP_DATA_IN_ADDRESS, &usb_transmit_fifo[usb_transmit_read_index], continous_length) == USBD_OK;
}
static bool connection_okay() {
if(data_transmission_active && HAL_GetTick() - last_transmission > USB_TRANMISSION_TIMEOUT) {
return false;
} else {
return true;
}
}
static uint8_t USBD_Class_DataIn(USBD_HandleTypeDef *pdev, uint8_t epnum) {
// A bulk transfer is complete when the endpoint does on of the following:
// - Has transferred exactly the amount of data expected
@ -189,6 +200,7 @@ static uint8_t USBD_Class_DataIn(USBD_HandleTypeDef *pdev, uint8_t epnum) {
log_transmission_active = false;
}
}
last_transmission = HAL_GetTick();
return USBD_OK;
}
static uint8_t USBD_Class_DataOut(USBD_HandleTypeDef *pdev,
@ -222,6 +234,9 @@ void usb_init(usbd_recv_callback_t receive_callback) {
HAL_NVIC_EnableIRQ(USB_LP_IRQn);
}
bool usb_transmit(const uint8_t *data, uint16_t length) {
if(!connection_okay()) {
return false;
}
// attempt to add data to fifo
if(length > usb_available_buffer()) {
// data won't fit, abort