Hi,
I modified the UART example to work on different pins i.e. pin 17 and 15 on custom board. When I use printf() to print logs, it works. If I use the NRF LOG to print, it doesn't work.
What possibly could go wrong?
I have set NRF_LOG_ENABLED 1 in sdk_config.h
I found something similar but didn't work out.
Also, I don't have pin RTS PIN and CTS PIN connected so what value shall I assign them in app_uart_comm_params_t?
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*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
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* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
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*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
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*/
/** @file
* @defgroup uart_example_main main.c
* @{
* @ingroup uart_example
* @brief UART Example Application main file.
*
* This file contains the source code for a sample application using UART.
*
*/
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "app_uart.h"
#include "app_error.h"
#include "nrf_delay.h"
#include "nrf.h"
#include "bsp.h"
#if defined (UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined (UARTE_PRESENT)
#include "nrf_uarte.h"
#endif
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
//#include "nrf_log_default_backends.h"
#include "nrf_gpio.h"
#include "nrf_drv_gpiote.h"
//#define ENABLE_LOOPBACK_TEST /**< if defined, then this example will be a loopback test, which means that TX should be connected to RX to get data loopback. */
#define MAX_TEST_DATA_BYTES (15U) /**< max number of test bytes to be used for tx and rx. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
/* When UART is used for communication with the host do not use flow control.*/
#define UART_HWFC APP_UART_FLOW_CONTROL_DISABLED
/**@brief Function for handling uart events.
*
* @details This function will receive a single character from the uart module and append it to
* a string. The string will be be sent over uart when the last character received was a
* 'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length.
*/
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[255];
static uint8_t index = 0;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if ((data_array[index - 1] == '\n') ||
(data_array[index - 1] == '\r') ||
(index >= 254))
{
if (index > 1)
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_INFO(data_array, index);
printf("data_array: %s", data_array);
}
index = 0;
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void)
{
ret_code_t err_code;
const app_uart_comm_params_t comm_params =
{
RX_PIN_NUMBER,
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_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Function for main application entry.
*/
int main(void)
{
uart_init();
APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
printf("\r\nUART example started.\r\n");
APP_ERROR_CHECK(nrf_drv_gpiote_init());
nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);
APP_ERROR_CHECK(nrf_drv_gpiote_out_init(23, &out_config));
nrf_drv_gpiote_out_clear(23);
NRF_LOG_INFO("HEY FROM NRF LOG!!!");
while (true)
{
__WFE();
UNUSED_RETURN_VALUE(NRF_LOG_PROCESS());
}
}
/** @} */
nRF52840, SDK 15.2, Keil
