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overwrite old data if fifo is full

This commit is contained in:
hathach 2018-12-13 23:56:06 +07:00
parent e136222ae2
commit b37b2fa7e7
1 changed files with 5 additions and 1 deletions
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6
ports/nrf/common-hal/busio/UART.c
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@ -73,7 +73,11 @@ static void uart_callback_irq (const nrfx_uarte_event_t * event, void * context)
switch ( event->type ) {
case NRFX_UARTE_EVT_RX_DONE:
for(uint8_t i=0; i < event->data.rxtx.bytes; i++) {
ringbuf_put(&self->rbuf, event->data.rxtx.p_data[i]);
if ( ringbuf_put(&self->rbuf, event->data.rxtx.p_data[i]) < 0 ) {
// if full overwrite old data
(void) ringbuf_get(&self->rbuf);
ringbuf_put(&self->rbuf, event->data.rxtx.p_data[i]);
}
}
// keep receiving