static void usart_read_callback(struct usart_module *const usart_module)
{
/* Write byte to circular buffer */
if (circularBufferWrite(&rxcb, rx_buffer[0]) != 0) {
printf("RX error\r\n");
}
/* Set for usart callback */
usart_read_buffer_job(&usart_debug, (uint8_t *)rx_buffer, MAX_RX_BUFFER_LENGTH);
}
/** Transfer bytes from a receive buffer into receive FIFO.
* \warning This assumes there is enough space (if not, usbFatalError() will
* be called). There should always be enough space, since a receive
* is never queued unless there is enough space.
*/
static void transferIntoReceiveFIFO(uint8_t *buffer, uint32_t length)
{
uint32_t i;
if (circularBufferSpaceRemaining(&receive_fifo) < length)
{
// This should never happen.
usbFatalError();
}
for (i = 0; i < length; i++)
{
circularBufferWrite(&receive_fifo, buffer[i], 1);
}
}