nRF UART app not detecting

RE: nRF UART app not detecting

Vishnu Pradeep — Wed, 19 Oct 2016 14:48:03 GMT

Now that the first program (nRF5_SDK_11.0.0_MPU6050_Acc_X_Output.7z) is working as well. It is using TWI1 module. But it is not working if I disable TWI1 and enable TWI0 or if I change the SCL and SDA pin numbers.!! How can I configure the SCL and SDA pins ?

RE: nRF UART app not detecting

Vishnu Pradeep — Wed, 19 Oct 2016 09:10:22 GMT

Thanks Sigurd. It is working now. I used to program Softdevice with Keil. I couldn't program the module when I loaded softdevice with nRF gostudio. But now it is working.

Thanks

RE: nRF UART app not detecting

Sigurd — Wed, 19 Oct 2016 08:08:31 GMT

Try to program the SoftDevice S132 again with nRFgoStudio. After that, load the application with Keil.

RE: nRF UART app not detecting

Vishnu Pradeep — Wed, 19 Oct 2016 07:33:42 GMT

Here is from where I got the sample application. This was working perfectly. But after I tried to program an extrenal BMD-300 modle I sent recover command to the onboard nRF52 in DK. After that this program is not working.

RE: nRF UART app not detecting

Vishnu Pradeep — Wed, 19 Oct 2016 06:20:35 GMT

Does anyone has a sample application which sends ADC data through BLE app uart? so that I can see the ADC value in nRF uart app?

RE: nRF UART app not detecting

Vishnu Pradeep — Tue, 18 Oct 2016 16:20:00 GMT

I tried this. ble_app_uart__saadc_timer_driven__scan_mode

RE: nRF UART app not detecting

Sigurd — Tue, 18 Oct 2016 14:16:56 GMT

Are you using saadc_low_power or ble_app_uart__saadc_timer_driven__scan_mode ?

RE: nRF UART app not detecting

Vishnu Pradeep — Tue, 18 Oct 2016 14:15:25 GMT

The other code is also giving the same problem

RE: nRF UART app not detecting

Sigurd — Tue, 18 Oct 2016 14:04:10 GMT

You are trying to send with ble_nus_string_send() in main.c without being in a connection ( You have not connected with the app yet), you get "NRF_ERROR_INVALID_STATE", and the code goes into the error handler.

RE: nRF UART app not detecting

Vishnu Pradeep — Tue, 18 Oct 2016 13:29:13 GMT

Hi Sigurd, It is not coming into the breakpoint. Can you just check the code whether it is detecting in your mobile phone or not?

RE: nRF UART app not detecting

Vishnu Pradeep — Tue, 18 Oct 2016 13:06:08 GMT

int main(void) { uint32_t err_code; bool erase_bonds; uint16_t length = 0; // Initialize. // MPU6050_Init(); APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false); uart_init();

buttons_leds_init(&erase_bonds);
ble_stack_init();
gap_params_init();
services_init();
advertising_init();
conn_params_init();
	
printf("\r\nUART Start!\r\n");
err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);

// Enter main loop.
for (;;)
{
		//	MPU6050_GetAccData(MPU6050_Acc);
		//	memset(PrintBuffer,0x00,sizeof(PrintBuffer));
		//	sprintf(PrintBuffer, "x:%.2f\r\n", MPU6050_Acc[0]);	//show x-axis rawdata
		//	length = strlen(PrintBuffer);
			err_code = ble_nus_string_send(&m_nus, "Testing", 7);
			APP_ERROR_CHECK(err_code);
			nrf_delay_ms(1000);
    power_manage();
}

}

RE: nRF UART app not detecting

Sigurd — Tue, 18 Oct 2016 13:03:15 GMT

Set optimization level 0 in target options -> C/C++ and define DEBUG in the preprocessor symbols.
Place a break point next to while(loop) line 119, in app_error.c
What for the error to happen, and read the value.

RE: nRF UART app not detecting

Vishnu Pradeep — Tue, 18 Oct 2016 12:57:00 GMT

How can I check the err_code value? Sorry if the question is too stupid to ask. I haven't succeeded in debugging the device yet using Keil. How can I do that?

The device is not sending to the PC's terminal also through UART. I updated the main code to just send some sample String. it is given below

RE: nRF UART app not detecting

Sigurd — Tue, 18 Oct 2016 12:46:02 GMT

I see that you have added this code to the main.c:

            MPU6050_GetAccData(MPU6050_Acc);
	        memset(PrintBuffer,0x00,sizeof(PrintBuffer));
			sprintf(PrintBuffer, "x:%.2f\r\n", MPU6050_Acc[0]);	//show x-axis rawdata
			length = strlen(PrintBuffer);
			err_code = ble_nus_string_send(&m_nus, PrintBuffer, length);
			nrf_delay_ms(1000);

Can you add APP_ERROR_CHECK(err_code); on the error_code from ble_nus_string_send(), and see if you get an error. When sending data on every main iteration, you are also maybe filling the BLE buffers, and getting a BLE_ERROR_NO_TX_BUFFERS error ? Try to only send data when you get new data from the MPU6050.