Hi,
I am using BMD301 chip on my custom board which schematic i have shown below,I need to enable UART as well as nrf_log in my application.
For this I am using SDK 15.3 PCA10040,
For that i am using \nRF5_SDK_15.3.0_59ac345\examples\peripheral\uart and
\nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_uart examples.
I have uploaded \nRF5_SDK_15.3.0_59ac345\examples\peripheral\uart,
BMD restarting constaly by printing first letter only which is "U" here.
But I am not able get any data on my uart pin.So, please provide solutions.
By changing configuration RX,TX pin according to my requirement
like this,
int main(void)
{
uint32_t err_code;
bsp_board_init(BSP_INIT_LEDS);
const app_uart_comm_params_t comm_params =
{
31,//RX_PIN_NUMBER,
30,//TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
UART_HWFC,
false,
#if defined (UART_PRESENT)
NRF_UART_BAUDRATE_115200
#else
NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_error_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
#ifndef ENABLE_LOOPBACK_TEST
printf("UART example started \n");
while (true)
{
uint8_t data[30];
memset(data,0,sizeof(data));
uint32_t err;
int i=0;
uint8_t cr;
UART_READ:
if (app_uart_get(&cr) == NRF_SUCCESS)
{
//app_uart_put(cr);
data[i++]=cr;
goto UART_READ;
}
if(i>0)
printf("Received : %s \n",data);
nrf_delay_ms(1000);
printf("Running\n");
}
#else
// This part of the example is just for testing the loopback .
while (true)
{
uart_loopback_test();
}
#endif
}
also added this in sdk_config.h
// </h>
//==========================================================
// <h> Clock - SoftDevice clock configuration
//==========================================================
// <o> NRF_SDH_CLOCK_LF_SRC - SoftDevice clock source.
// <0=> NRF_CLOCK_LF_SRC_RC
// <1=> NRF_CLOCK_LF_SRC_XTAL
// <2=> NRF_CLOCK_LF_SRC_SYNTH
#ifndef NRF_SDH_CLOCK_LF_SRC
#define NRF_SDH_CLOCK_LF_SRC 0
#endif
// <o> NRF_SDH_CLOCK_LF_RC_CTIV - SoftDevice calibration timer interval.
#ifndef NRF_SDH_CLOCK_LF_RC_CTIV
#define NRF_SDH_CLOCK_LF_RC_CTIV 16
#endif
// <o> NRF_SDH_CLOCK_LF_RC_TEMP_CTIV - SoftDevice calibration timer interval under constant temperature.
// <i> How often (in number of calibration intervals) the RC oscillator shall be calibrated
// <i> if the temperature has not changed.
#ifndef NRF_SDH_CLOCK_LF_RC_TEMP_CTIV
#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2
#endif
// <o> NRF_SDH_CLOCK_LF_XTAL_ACCURACY - External crystal clock accuracy used in the LL to compute timing windows.
// <0=> NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM
// <1=> NRF_CLOCK_LF_XTAL_ACCURACY_500_PPM
// <2=> NRF_CLOCK_LF_XTAL_ACCURACY_150_PPM
// <3=> NRF_CLOCK_LF_XTAL_ACCURACY_100_PPM
// <4=> NRF_CLOCK_LF_XTAL_ACCURACY_75_PPM
// <5=> NRF_CLOCK_LF_XTAL_ACCURACY_50_PPM
// <6=> NRF_CLOCK_LF_XTAL_ACCURACY_30_PPM
// <7=> NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
#ifndef NRF_SDH_CLOCK_LF_XTAL_ACCURACY
#define NRF_SDH_CLOCK_LF_XTAL_ACCURACY 7
#endif
