Acquiring GPS data through UART on a polling basis.

[sprasad]

I'm able to successfully use peripheral/uart example to read the data from GPS module. I achieved the same by setting baud rate to 4800, and connecting rx and tx of GPS to pins 6 and 8 respectively. Currently I have the GPS data printed on my console(CoolTerm). 

While the GPS module is continuously throwing data out of UART, how can I read this GPS data from UART only at specific intervals?

Is there a way where I can perform something like this? Enable UART, Collect data, Disable Uart. Again when I need GPS data, repeat the same procedure.

I also tried to incorporate a delay in my code to check if I can finish all my other tasks and then come back to read the data. But my console shows nothing!

while (true) {
    uint8_t cr[250];
    while (app_uart_get(&cr[gps_idx]) != NRF_SUCCESS);
    while (cr[gps_idx] != '\r') {
        gps_idx++ ;
        while (app_uart_get(&cr[gps_idx]) != NRF_SUCCESS);
    }

    printf("GPS Data One line end\r");
    for (int j=0; j<=gps_idx; j++) {
        printf("%c", cr[j]);
    }
    printf("GPS Data One Line printed\r\r");
      
    gps_idx = 0;
    
    // Works fine without this delay
    nrf_delay_ms(1000);
}

[sprasad]

Got it working by using  NRF_UART0->TASKS_STARTRX = 1 while receiving the data and then 

NRF_UART0->TASKS_STOPRX = 1 and app_uart_flush() in the error handler to ignore RX overrun errors.