Nordic 使用串口UART打印-蒲公英云

Nordic 使用串口UART打印

港控/mmm° 2022-12-29 06:41 477阅读 0赞

Nordic 使用串口UART打印

1. sdk_config

nRF_Drivers UART_ENABLE
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nRF_Libraries APP_UART_ENABLE

2. 添加文件

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接下来是，添加串口初始化函数和回调，可以添加到我们字节的.c文件中。
myuart.c

#include "app_uart.h"
#include "myuart.h"
#include "nrf_log.h"
#include "nrf_uart.h"
#include "nrf_uarte.h"
#include "pca_rail_lubricator.h"
#include "mylog.h"
#include "myota.h"
#define UART_RX_BUFF_LEN (255)
/**@brief Function for handling app_uart events. * * @details This function will receive a single character from the app_uart module and append it to * a string. The string will be be sent over BLE 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[UART_RX_BUFF_LEN];
    static uint8_t index = 0;
    uint32_t       err_code;
    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 >= UART_RX_BUFF_LEN))
            { 
                if (index > 1)
                { 
                    NRF_NUS_LOG_INFO("rx data: %s", data_array);
                    if ( 0 == strncmp((const char *)data_array, "ota_upgrade", 11))
                    { 
                        NRF_NUS_LOG_INFO("ota_upgrade");
                        myota_upgrade_processing();
                    }
                }
                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;
    }
}
/**@snippet [Handling the data received over UART] */
/**@brief Function for initializing the UART module. */
/**@snippet [UART Initialization] */
void myuart_init(void)
{ 
    uint32_t                     err_code;
    app_uart_comm_params_t const comm_params =
    { 
        .rx_pin_no    = RX_PIN_NUMBER,
        .tx_pin_no    = TX_PIN_NUMBER,
        .rts_pin_no   = RTS_PIN_NUMBER,
        .cts_pin_no   = CTS_PIN_NUMBER,
        .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
        .use_parity   = false,
#if defined (UART_PRESENT)
        .baud_rate    = NRF_UART_BAUDRATE_115200
#else
        .baud_rate    = 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);
}
/**@snippet [UART Initialization] */

myuart.h

#ifndef __MYUART_H
#define __MYUART_H
#define UART_TX_BUF_SIZE (256)
#define UART_RX_BUF_SIZE (256)
void myuart_init(void);
#endif /* __MYUART_H */

在pca_**.h板子定义.h文件中，定义我们的UART引脚。我这里使用的是P1口的13,15脚。
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在main.c中调用我们的myuart_init，初始化我们的串口。

此时，已经可以通过app_uart_get和app_uart_put接收和发送字符了。

3. 定义自己的UART_LOG_INFO

uart_pint.c

#include "uart_print.h"
#include "string.h"
#include "app_uart.h"
void uart_send_str(char *data)
{ 
    size_t len = 0;
    len = strlen(data);
    for (int i = 0; i < len; i++) { 
        app_uart_put(data[i]);
    }
}
void uart_send_log(char *data)
{ 
    uart_send_str(data);
    app_uart_put('\r');
    app_uart_put('\n');
}

uart_print.h

#ifndef __UART_PRINT_H
#define __UART_PRINT_H
#include "nrf_log.h"
void uart_send_str(char *data);
void uart_send_log(char *data);
#ifdef UART_PRINT
#define UART_LOG_INFO(...) \ do { char buff[256]; \ snprintf(buff, 256, __VA_ARGS__);\ uart_send_log(buff); \ } while (0);
#else
#define UART_LOG_INFO(...) NRF_LOG_INFO(__VA_ARGS__)
#endif
#endif /* __UART_PRINT_H */