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Modify the _write lock to wait on resource instead of xfer

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2017-11-08 19:39:42 -05:00
parent 8bdd4b9161
commit ee6c1cebb4
1 changed files with 12 additions and 13 deletions
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Firmware/Src/syscalls.c
+12 -13
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@@ -26,25 +26,24 @@ int _write(int file, char* data, int len) {
int written = 0;
switch (serial_printf_select) {
case SERIAL_PRINTF_IS_USB: {
// transmit over CDC
uint8_t status = CDC_Transmit_FS((uint8_t*)data, len);
written = (status == USBD_OK) ? len : 0;
// Wait for transmission to complete
osSemaphoreWait(sem_usb_tx, osWaitForever);
// Wait for the interface to be available
osStatus sem_stat = osSemaphoreWait(sem_usb_tx, osWaitForever);
if (sem_stat == osOK) {
uint8_t status = CDC_Transmit_FS((uint8_t*)data, len); // transmit over CDC
written = (status == USBD_OK) ? len : 0;
}
} break;
case SERIAL_PRINTF_IS_UART: {
//Check length
if (len > UART_TX_BUFFER_SIZE)
return 0;
// memcpy data into uart_tx_buf
memcpy(uart_tx_buf, data, len);
// Start DMA background trasnfer
HAL_UART_Transmit_DMA(&huart4, uart_tx_buf, len);
// Wait for the transmission to complete
osSemaphoreWait(sem_uart_dma, osWaitForever);
// Wait for the interface to be available
osStatus sem_stat = osSemaphoreWait(sem_uart_dma, osWaitForever);
if (sem_stat == osOK) {
memcpy(uart_tx_buf, data, len); // memcpy data into uart_tx_buf
HAL_UART_Transmit_DMA(&huart4, uart_tx_buf, len); // Start DMA background transfer
}
} break;
default: {