obd_iso15765/BleCanBoxCode/NRF51802/examples/dfu/bootloader/uart.c

#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "ble_gap.h"
#include "app_uart.h"
#include "app_util_platform.h"
#include "bsp.h"
#include "uart.h"

#define UART_TX_BUF_SIZE                256
#define UART_RX_BUF_SIZE                256
#define BLE_DATA_LEN                    32

static uint8_t uart_data[BLE_DATA_LEN];
static uint8_t uart_len = 0;

void uart_process_data(void)
{
	
}

/**@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' i.e '\n' (hex 0x0D) or if the string has reached a length of 
 *          @ref NUS_MAX_DATA_LENGTH.
 */
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
    switch (p_event->evt_type)
    {
        case APP_UART_DATA_READY:
            UNUSED_VARIABLE(app_uart_get(&uart_data[uart_len]));
            uart_len++;

            if ((uart_data[uart_len - 1] == '\n') || (uart_len >= (BLE_DATA_LEN)))
            {
								printf("uart:%s", uart_data);
								uart_data[uart_len - 1] = '\0';
								uart_data[uart_len - 2] = '\0';
								uart_process_data();
								memset(uart_data, 0, BLE_DATA_LEN);
                uart_len = 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;
    }
}

void uart_init(void)
{
    uint32_t                     err_code;
    const app_uart_comm_params_t comm_params =
    {
        RX_PIN_NUMBER,
        TX_PIN_NUMBER,
        RTS_PIN_NUMBER,
        CTS_PIN_NUMBER,
        //APP_UART_FLOW_CONTROL_ENABLED,
			  APP_UART_FLOW_CONTROL_DISABLED,
        false,
        UART_BAUDRATE_BAUDRATE_Baud115200
    };

    APP_UART_FIFO_INIT( &comm_params,
                       UART_RX_BUF_SIZE,
                       UART_TX_BUF_SIZE,
                       uart_event_handle,
                       APP_IRQ_PRIORITY_LOW,
                       err_code);
    APP_ERROR_CHECK(err_code);
}