RE: Stuck waiting for UART event (pstorage)

Marco — Fri, 10 Nov 2017 01:35:25 GMT

Actually the previous solution generated the issue that often some letters were repeated twice in a row (even in situations when there was no problem in transmitting before). By doing additional tests, I came up with the following updated code:

void simple_uart_put(uint8_t cr)
{
	int loop_cnt = 0;
    NRF_UART0->TXD = (uint8_t)cr;

    while (NRF_UART0->EVENTS_TXDRDY != 1)
    {
        // Wait for TXD data to be sent.

    	if (loop_cnt++ > 1000)
		{
			if(NRF_UART0->EVENTS_ERROR)
			{
				if ((NRF_UART0->TASKS_STARTTX != 1) && (NRF_UART0->TASKS_SUSPEND != 1))
				{
					NRF_UART0->TASKS_STARTTX = 1;
					return;
				}
			}    
			loop_cnt = 0;
		}
    }

    NRF_UART0->EVENTS_TXDRDY = 0;
}