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nrf/modules/machine/uart: Prevent UART lock-up after a receive error.

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Like frame error, overrun, etc.  Fix is provided by @ricksorensen.
This commit is contained in:
robert-hh 2023-03-22 20:31:50 +01:00 committed by Damien George
parent a529e0e8cf
commit eb6e5143c4
1 changed files with 4 additions and 0 deletions
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4
ports/nrf/modules/machine/uart.c
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@ -77,6 +77,7 @@ typedef struct _machine_hard_uart_buf_t {
#define NRF_UART_HWFC_DISABLED NRF_UARTE_HWFC_DISABLED
#define NRF_UART_PARITY_EXCLUDED NRF_UARTE_PARITY_EXCLUDED
#define NRFX_UART_EVT_RX_DONE NRFX_UARTE_EVT_RX_DONE
#define NRFX_UART_EVT_ERROR NRFX_UARTE_EVT_ERROR
#define NRF_UART_BAUDRATE_1200 NRF_UARTE_BAUDRATE_1200
#define NRF_UART_BAUDRATE_2400 NRF_UARTE_BAUDRATE_2400
@ -136,6 +137,9 @@ STATIC void uart_event_handler(nrfx_uart_event_t const *p_event, void *p_context
{
ringbuf_put((ringbuf_t *)&self->buf.rx_ringbuf, chr);
}
} else if (p_event->type == NRFX_UART_EVT_ERROR) {
// Perform a read to unlock UART in case of an error
nrfx_uart_rx(self->p_uart, &self->buf.rx_buf[0], 1);
}
}