UART not work in ble_app_beacon

[Nelson Rodriguez]

Hello i use the example ble_app_beacon_s130_pca10028, i'll try to add UART functions, but they not work anybody has this problem, please help me!!

int main(void) { uint32_t err_code; // Initialize. APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);

err_code = bsp_init(BSP_INIT_LED, APP_TIMER_TICKS(100, APP_TIMER_PRESCALER), NULL);
APP_ERROR_CHECK(err_code);
	uart_init();
ble_stack_init();
advertising_init();
	printf("Starting...");
advertising_start();
	
	
// Enter main loop.
for (;;)
{
    power_manage();
}

}

Best Regards

Nelson

[Bert]

What doesn't work? Have you debugged the application, specifically stepping through uart_init and checking the error_code after each required function? Is this a dev kit, or a custom board? Have you verified UART is working in other examples like UART loopback in examples\peripheral\uart?

[Nelson Rodriguez]

Hi Bert, it works perfect in another examples like ble_app_uart, but fail in ble_app_beacon I make a step debug and tha aplication freezes in printf function...

Best Regards

Nelson

[Bert]

Hi Nelson, generally, from what I've seen, people usually retarget printf over UART, or use Segger RTT for logging. However, regarding the fact that its hanging, my guess is that somewhere in your project its linking to retarget.c. For instance, in my IAR project, under the nRF_Libraries group, retarget.c is linked. If I remove that file, navigate to General Options-->Library Configuration you should see an option for semihosting. If you want printf to log through IAR IO console, click Semihosted for stdout/stderr. You should now be able to see your stdout over the View-->Terminal IO window.

Let me know how you make out!

[Sigurd]

Hi Nelson,

What SDK version are you using? Also see this answer.