中移ML307A(4G Cat1,C-SDK,OpenCPU)模组学习开发-UART串口

2024-08-13 11:15:49 浏览数 (1)

测试

1,配置串口0为 115200波特率, 然后串口0收到什么就返回什么

初始化

串口接收和发送

代码语言：javascript复制
#include "cm_sys.h"
#include "cm_os.h"
#include "cm_mem.h"
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include <string.h>

#include "cm_gpio.h"
#include "cm_iomux.h"
#include "cm_uart.h"


#define  URAT_ID  0
static void* g_uart_sem = NULL;

#define uartRecvBuffLen  200
static char uartRecvBuff[uartRecvBuffLen] = {0};//缓存串口接收的数据
/* 串口接收*/
static void uartRecvTask(void *param)
{
    int uartRecvLen=0;
    int len = 0;
    while (1)
    {
        uartRecvLen=0;
        if (g_uart_sem != NULL)
        {
            osSemaphoreAcquire(g_uart_sem, osWaitForever);//等待有串口信号量
        }
        //读取串口数据
        len = cm_uart_read(URAT_ID, (void*)&uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
        uartRecvLen  = len;
        while (len!=0)//直到读取完
        {
            if (uartRecvLen < uartRecvBuffLen)
            {
                //读取串口数据
                osDelay(1);//延时
                len = cm_uart_read(URAT_ID, (void*)&uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
                uartRecvLen  = len;
            }
            else
            {
                break;
            }
        }
        
        //串口发送数据
        cm_uart_write(URAT_ID, uartRecvBuff, uartRecvLen, 1000);
    }
}

//串口事件回调函数
static void uartEventCall(void *param, uint32_t type)
{
    
    if (CM_UART_EVENT_TYPE_RX_ARRIVED & type)//收到新数据
    {
        if (g_uart_sem != NULL)
        {
            osSemaphoreRelease(g_uart_sem);//发送一个信号量告知任务可以读取串口数据
        }
    }
    if (CM_UART_EVENT_TYPE_RX_OVERFLOW & type)
    {
        /* 收到溢出事件，触发其他线程处理溢出事件 */
    }
}

int uartInit(void)
{
    int32_t ret = -1;
    /* 配置参数 */
    cm_uart_cfg_t config = 
    {
        CM_UART_BYTE_SIZE_8, 
        CM_UART_PARITY_NONE,
        CM_UART_STOP_BIT_ONE, 
        CM_UART_FLOW_CTRL_NONE, 
        115200,//波特率
        0   //配置为普通串口模式，若要配置为低功耗模式可改为1
    };
    /* 事件参数 */
    cm_uart_event_t event = 
    {
        CM_UART_EVENT_TYPE_RX_ARRIVED|CM_UART_EVENT_TYPE_RX_OVERFLOW,   //注册需要上报的事件类型
        NULL,//用户参数
        uartEventCall //串口事件回调函数
    };
    /* 配置引脚复用 GPIO17,GPIO18设置为UART1功能*/
    cm_iomux_set_pin_func(17,1);
    cm_iomux_set_pin_func(18,1);
    
    /* 注册事件和回调函数 */
    ret = cm_uart_register_event(URAT_ID, &event);
    if (ret != 0){ return -1;}
    /* 开启串口 */
    ret = cm_uart_open(URAT_ID, &config);
    if (ret != 0){ return -1;}

    /* 配置串口唤醒 ,只有UART0具有串口唤醒功能*/
    if (URAT_ID == CM_UART_DEV_0)
    {
        /* 配置uart唤醒功能，使能边沿检测才具备唤醒功能，仅主串口具有唤醒功能，用于唤醒的数据并不能被uart接收，请在唤醒后再进行uart数传 */
        cm_iomux_set_pin_cmd(CM_IOMUX_PIN_17, CM_IOMUX_PINCMD1_LPMEDEG, CM_IOMUX_PINCMD1_FUNC1_LPM_EDGE_RISE);
    }

    /*串口接收任务*/
    osThreadAttr_t uart_task_attr = {0};
    uart_task_attr.name = "uart_task";
    uart_task_attr.stack_size = 4096 * 2;
    uart_task_attr.priority= osPriorityNormal;
    
    if (g_uart_sem == NULL)
    {
        g_uart_sem = osSemaphoreNew(1, 0, NULL);//创建一个信号量,初始化值为0
    }

    osThreadNew(uartRecvTask, NULL, &uart_task_attr);//创建接收数据任务
    return 0;
}


//相当于程序的main函数
int cm_opencpu_entry(char * param)
{
    (void)param;

    uartInit();

    return 0;
}

连接上串口模块进行测试

标准方案

1,这边把串口封装了文件

这边把代码粘贴出来(大家注重使用就可以,使用出来有问题大家反馈给我)

代码语言：javascript复制
#define uart_c_

#include "uart.h"

#include "cm_sys.h"
#include "cm_os.h"
#include "cm_mem.h"
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include <string.h>

#include "cm_gpio.h"
#include "cm_iomux.h"
#include "cm_uart.h"



//串口事件回调函数
static void uart0Event000000(void *param, uint32_t type)
{
    uartStruct *uart = ( uartStruct *)param;
    if (CM_UART_EVENT_TYPE_RX_ARRIVED & type)//收到接收事件
    {
        if (uart->osEventFlagsIdUart != NULL)
        {
            osEventFlagsSet(uart->osEventFlagsIdUart, UART_EVENT_RECV);//发送事件
        }
    }
    if (CM_UART_EVENT_TYPE_RX_OVERFLOW & type)//收到溢出事件
    {
        if (uart->osEventFlagsIdUart != NULL)
        {
            osEventFlagsSet(uart->osEventFlagsIdUart, UART_EVENT_FULL);//发送事件
        }
    }
}


//串口事件回调函数
static void uart1Event000000(void *param, uint32_t type)
{
    uartStruct *uart = ( uartStruct *)param;
    if (CM_UART_EVENT_TYPE_RX_ARRIVED & type)//收到接收事件
    {
        if (uart->osEventFlagsIdUart != NULL)
        {
            osEventFlagsSet(uart->osEventFlagsIdUart, UART_EVENT_RECV);//发送事件
        }
    }
    if (CM_UART_EVENT_TYPE_RX_OVERFLOW & type)//收到溢出事件
    {
        if (uart->osEventFlagsIdUart != NULL)
        {
            osEventFlagsSet(uart->osEventFlagsIdUart, UART_EVENT_FULL);//发送事件
        }
    }
}


//串口事件回调函数
static void uart2Event000000(void *param, uint32_t type)
{
    uartStruct *uart = ( uartStruct *)param;
    if (CM_UART_EVENT_TYPE_RX_ARRIVED & type)//收到接收事件
    {
        if (uart->osEventFlagsIdUart != NULL)
        {
            osEventFlagsSet(uart->osEventFlagsIdUart, UART_EVENT_RECV);//发送事件
        }
    }
    if (CM_UART_EVENT_TYPE_RX_OVERFLOW & type)//收到溢出事件
    {
        if (uart->osEventFlagsIdUart != NULL)
        {
            osEventFlagsSet(uart->osEventFlagsIdUart, UART_EVENT_FULL);//发送事件
        }
    }
}



//串口发送数据任务
static void uart0SendTask000000(void *param)
{
    uartStruct *uart = ( uartStruct *)param;

    osStatus_t status;
    uartSendStruct* uartSend;
    while(1)
    {
        status = osMessageQueueGet(uart->osMessageQueueIdUartSendData, &uartSend, NULL,osWaitForever);

        if (status == osOK)
        {
            cm_uart_write(uart->uartId, uartSend->data, uartSend->len, 1000);
            
            cm_free(uartSend->data);
            cm_free(uartSend);
        }
    }
}


//串口发送数据任务
static void uart1SendTask000000(void *param)
{
    uartStruct *uart = ( uartStruct *)param;

    osStatus_t status;
    uartSendStruct* uartSend;
    while(1)
    {
        status = osMessageQueueGet(uart->osMessageQueueIdUartSendData, &uartSend, NULL,osWaitForever);

        if (status == osOK)
        {
            cm_uart_write(uart->uartId, uartSend->data, uartSend->len, 1000);
            
            cm_free(uartSend->data);
            cm_free(uartSend);
        }
    }
}

//串口发送数据任务
static void uart2SendTask000000(void *param)
{
    uartStruct *uart = ( uartStruct *)param;

    osStatus_t status;
    uartSendStruct* uartSend;
    while(1)
    {
        status = osMessageQueueGet(uart->osMessageQueueIdUartSendData, &uartSend, NULL,osWaitForever);

        if (status == osOK)
        {
            cm_uart_write(uart->uartId, uartSend->data, uartSend->len, 1000);
            
            cm_free(uartSend->data);
            cm_free(uartSend);
        }
    }
}



/* 串口接收 */
static void uart0RecvTask000000(void *param)
{
    uartStruct *uart = ( uartStruct *)param;
    int  uartRecvLen=0;
    int len = 0;
    while (1)
    {
        uartRecvLen=0;
        //等待事件,                                     
        uint32_t flag = osEventFlagsWait(uart->osEventFlagsIdUart, UART_EVENT_RECV | UART_EVENT_FULL, osFlagsWaitAll, osWaitForever);

        if (flag>0)
        {
            len = cm_uart_read(uart->uartId, (void*)&uart->uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
            uartRecvLen  = len;
            while (len!=0)//直到读取完
            {
                if (uartRecvLen < uartRecvBuffLen)
                {
                    osDelay(1);//延时
                    len = cm_uart_read(uart->uartId, (void*)&uart->uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
                    uartRecvLen  = len;
                }
                else
                {
                    break;
                }
            }

            if (uart->uartRecvCb)
            {
                uart->uartRecvCb(flag, uart->uartRecvBuff, uartRecvLen );
            }
        }
    }
}



/* 串口接收 */
static void uart1RecvTask000000(void *param)
{
    uartStruct *uart = ( uartStruct *)param;
    int  uartRecvLen=0;
    int len = 0;
    while (1)
    {
        uartRecvLen=0;
        //等待事件,                                     
        uint32_t flag = osEventFlagsWait(uart->osEventFlagsIdUart, UART_EVENT_RECV | UART_EVENT_FULL, osFlagsWaitAll, osWaitForever);

        if (flag>0)
        {
            len = cm_uart_read(uart->uartId, (void*)&uart->uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
            uartRecvLen  = len;
            while (len!=0)//直到读取完
            {
                if (uartRecvLen < uartRecvBuffLen)
                {
                    osDelay(1);//延时
                    len = cm_uart_read(uart->uartId, (void*)&uart->uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
                    uartRecvLen  = len;
                }
                else
                {
                    break;
                }
            }

            if (uart->uartRecvCb)
            {
                uart->uartRecvCb(flag, uart->uartRecvBuff, uartRecvLen );
            }
        }
    }
}



/* 串口接收 */
static void uart2RecvTask000000(void *param)
{
    uartStruct *uart = ( uartStruct *)param;
    int  uartRecvLen=0;
    int len = 0;
    while (1)
    {
        uartRecvLen=0;
        //等待事件,                                     
        uint32_t flag = osEventFlagsWait(uart->osEventFlagsIdUart, UART_EVENT_RECV | UART_EVENT_FULL, osFlagsWaitAll, osWaitForever);

        if (flag>0)
        {
            len = cm_uart_read(uart->uartId, (void*)&uart->uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
            uartRecvLen  = len;
            while (len!=0)//直到读取完
            {
                if (uartRecvLen < uartRecvBuffLen)
                {
                    osDelay(1);//延时
                    len = cm_uart_read(uart->uartId, (void*)&uart->uartRecvBuff[uartRecvLen], uartRecvBuffLen - uartRecvLen, 1000);
                    uartRecvLen  = len;
                }
                else
                {
                    break;
                }
            }

            if (uart->uartRecvCb)
            {
                uart->uartRecvCb(flag, uart->uartRecvBuff, uartRecvLen );
            }
        }
    }
}



int uart_init(uartStruct *uart)
{
    int32_t ret = -1;

    /* 配置参数 */
    cm_uart_cfg_t config = 
    {
        uart->config.byte_size, 
        uart->config.parity,
        uart->config.stop_bit, 
        uart->config.flow_ctrl, 
        uart->config.baudrate,
        uart->config.is_lpuart
    };

    /* 事件参数 */
    cm_uart_event_t event={0};

    event.event_type = CM_UART_EVENT_TYPE_RX_ARRIVED|CM_UART_EVENT_TYPE_RX_OVERFLOW;   //注册需要上报的事件类型
    event.event_param = uart;
    if (uart->uartId==CM_UART_DEV_0)
    {
        event.event_entry = uart0Event000000;
    }
    else if (uart->uartId==CM_UART_DEV_1)
    {
        event.event_entry = uart1Event000000;
    }
    else if (uart->uartId==CM_UART_DEV_2)
    {
        event.event_entry = uart2Event000000;
    }
    
    
    //创建事件
    uart->osEventFlagsIdUart = osEventFlagsNew(NULL);
    if (uart->osEventFlagsIdUart==NULL) 
    {
        return -1;
    }

    //发送消息队列
    uart->osMessageQueueIdUartSendData = osMessageQueueNew(50,sizeof(uartSendStruct *),NULL);
    if (uart->osMessageQueueIdUartSendData == NULL) 
    {
        return -1;
    }

    osThreadAttr_t uart_send_task_attr = {0};
    uart_send_task_attr.name  = "UartSendTask";
    uart_send_task_attr.stack_size = 4096 * 2;
    uart_send_task_attr.priority = osPriorityNormal;


    if (uart->uartId==CM_UART_DEV_0)
    {
        osThreadNew(uart0SendTask000000, (void *)uart, &uart_send_task_attr);
    }
    else if (uart->uartId==CM_UART_DEV_1)
    {
        osThreadNew(uart1SendTask000000, (void *)uart, &uart_send_task_attr);
    }
    else if (uart->uartId==CM_UART_DEV_2)
    {
        osThreadNew(uart2SendTask000000, (void *)uart, &uart_send_task_attr);
    }

    


    /* 配置引脚复用 */
    if (uart->uartId==CM_UART_DEV_0)
    {
        cm_iomux_set_pin_func(17,1);
        cm_iomux_set_pin_func(18,1);
    }
    else if (uart->uartId==CM_UART_DEV_1)
    {
        cm_iomux_set_pin_func(28,1);
        cm_iomux_set_pin_func(29,1);
    }
    else if (uart->uartId==CM_UART_DEV_2)
    {
        cm_iomux_set_pin_func(50,3);
        cm_iomux_set_pin_func(51,3);
    }
    

    /* 注册事件和回调函数 */
    ret = cm_uart_register_event(uart->uartId, &event);
    if (ret != 0)
    {
        cm_log_printf(0, "uart register event err,ret=%dn", ret);
        return -1;
    }
    /* 开启串口 */
    ret = cm_uart_open(uart->uartId, &config);
    
    if (ret != 0)
    {
        cm_log_printf(0, "uart init err,ret=%dn", ret);
        return -1;
    }

    /* 配置串口唤醒 */
    /* 只有UART0具有串口唤醒功能 */
    if (uart->uartId == CM_UART_DEV_0)
    {
        /* 配置uart唤醒功能，使能边沿检测才具备唤醒功能，仅主串口具有唤醒功能，用于唤醒的数据并不能被uart接收，请在唤醒后再进行uart数传 */
        cm_iomux_set_pin_cmd(CM_IOMUX_PIN_17, CM_IOMUX_PINCMD1_LPMEDEG, CM_IOMUX_PINCMD1_FUNC1_LPM_EDGE_RISE);
    }

    cm_log_printf(0, "cm_uart_register_event start... ...n");

    /* 串口接收*/
    osThreadAttr_t uart_task_attr = {0};
    uart_task_attr.name = "uart_task";
    uart_task_attr.stack_size = 4096 * 2;
    uart_task_attr.priority= osPriorityNormal;

    if (uart->osEventFlagsIdUart == NULL)
    {
        uart->osEventFlagsIdUart = osEventFlagsNew(NULL);//创建事件
        if (uart->osEventFlagsIdUart==NULL) 
        {
            return -1;
        }
    }

    if (uart->uartId==CM_UART_DEV_0)
    {
        osThreadNew(uart0RecvTask000000, (void *)uart, &uart_task_attr);
    }
    else if (uart->uartId==CM_UART_DEV_1)
    {
        osThreadNew(uart1RecvTask000000, (void *)uart, &uart_task_attr);
    }
    else if (uart->uartId==CM_UART_DEV_2)
    {
        osThreadNew(uart2RecvTask000000, (void *)uart, &uart_task_attr);
    }

    return 0;
}



void uartSendData(uartStruct *uart,char *data,uint16_t len)
{
    uartSendStruct* uartSend = (uartSendStruct*)cm_malloc(sizeof(uartSendStruct));
    if (uartSend!=NULL)
    {
        char *data1 = (char*)cm_malloc(len 1);
        if (data1!=NULL)
        {
            memcpy(data1,data,len);
            uartSend->data = data1;
            uartSend->len = len;

            if (osMessageQueuePut(uart->osMessageQueueIdUartSendData ,&uartSend,0U,0U)!=osOK)
            {
                cm_free(uartSend);
            }
        }
        else
        {
            cm_free(uartSend);
        }
    }
}
代码语言：javascript复制
#ifndef uart_c_
#define uart_c_ extern
#else
#define uart_c_
#endif

#ifndef uart_h_
#define uart_h_

#include "cm_sys.h"
#include "cm_os.h"
#include "cm_mem.h"
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include <string.h>
#include "cm_gpio.h"
#include "cm_iomux.h"
#include "cm_uart.h"



#define UART_EVENT_RECV 0x01  //串口接收到数据事件标志
#define UART_EVENT_FULL 0x02  //串口接收缓存区满事件标志

typedef struct{
  char *data;
  uint32_t len;
}uartSendStruct;


#define uartRecvBuffLen 200//串口缓存数据长度
typedef struct{
    cm_uart_cfg_t config;
    osEventFlagsId_t osEventFlagsIdUart;//事件句柄
    osMessageQueueId_t osMessageQueueIdUartSendData;//发送数据队列
    cm_uart_dev_e uartId;//串口号
    char uartRecvBuff[uartRecvBuffLen];//缓存串口接收的数据
    void (*uartRecvCb) (uint32_t flags, char *data, int len);//串口接收数据回调函数
}uartStruct;


int uart_init(uartStruct *uart);
void uartSendData(uartStruct *uart,char *data,uint16_t len);

#endif

2,使用文件就把文件放到这个位置

然后在mk里面

代码语言：javascript复制
#定义 CUSTOM_MAIN_DIR  代表  custom/custom_main 路径名称
CUSTOM_MAIN_DIR := custom/custom_main

#追加源文件(.c文件)  (custom/custom_main/src/custom_main.c)
OC_FILES  = $(CUSTOM_MAIN_DIR)/src/custom_main.c

#追加lib文件(.a文件)   (custom/custom_main/sys_package.a)
OC_LIBS   = $(CUSTOM_MAIN_DIR)/sys_package.a

#追加 .h文件路径 (custom/custom_main/inc)
INC       = -I'$(CUSTOM_MAIN_DIR)/inc'
#追加 .h文件路径  (custom/custom_main)
INC       = -I'$(CUSTOM_MAIN_DIR)'
#追加 .h文件路径 (custom/custom_main/src)
INC       = -I'$(CUSTOM_MAIN_DIR)/src'


#追加源文件(.c文件)
OC_FILES  = $(CUSTOM_MAIN_DIR)/src/uart.c

3,下面是串口0的使用

代码语言：javascript复制
#include "cm_sys.h"
#include "cm_os.h"
#include "cm_mem.h"
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include <string.h>

#include "cm_gpio.h"
#include "cm_iomux.h"
#include "cm_uart.h"

#include "uart.h"


uartStruct uart0={0};//定义串口结构体变量


void uartRecvData(uint32_t flags, char *data, int len)
{
    uartSendData(&uart0, data, len);//把接收的数据返回
}


//相当于程序的main函数
int cm_opencpu_entry(char * param)
{
    (void)param;

    //配置串口
    uart0.uartId = 0;//配置串口号
    uart0.uartRecvCb = uartRecvData;//设置接收数据函数
    uart0.config.baudrate = 115200;//波特率
    uart0.config.byte_size = CM_UART_BYTE_SIZE_8;//数据位数
    uart0.config.flow_ctrl = CM_UART_FLOW_CTRL_NONE;//硬件流控
    uart0.config.parity = CM_UART_PARITY_NONE;//奇偶校验
    uart0.config.stop_bit = CM_UART_STOP_BIT_ONE;//停止位
    uart0.config.is_lpuart = 0;//若要配置为低功耗模式可改为1
    if (uart_init(&uart0) !=0)//初始化串口
    {
        return -1;
    }
    
    return 0;
}

3,再增加上串口1

代码语言：javascript复制
#include "cm_sys.h"
#include "cm_os.h"
#include "cm_mem.h"
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include <string.h>

#include "cm_gpio.h"
#include "cm_iomux.h"
#include "cm_uart.h"

#include "uart.h"


uartStruct uart0={0};//定义串口结构体变量
uartStruct uart1={0};//定义串口结构体变量


void uartRecvData(uint32_t flags, char *data, int len)
{
    uartSendData(&uart0, data, len);//把接收的数据返回
}


void uart1RecvData(uint32_t flags, char *data, int len)
{
    uartSendData(&uart1, data, len);//把接收的数据返回
}

//相当于程序的main函数
int cm_opencpu_entry(char * param)
{
    (void)param;

    //配置串口
    uart0.uartId = 0;//配置串口号
    uart0.uartRecvCb = uartRecvData;//设置接收数据函数
    uart0.config.baudrate = 115200;//波特率
    uart0.config.byte_size = CM_UART_BYTE_SIZE_8;//数据位数
    uart0.config.flow_ctrl = CM_UART_FLOW_CTRL_NONE;//硬件流控
    uart0.config.parity = CM_UART_PARITY_NONE;//奇偶校验
    uart0.config.stop_bit = CM_UART_STOP_BIT_ONE;//停止位
    uart0.config.is_lpuart = 0;//若要配置为低功耗模式可改为1
    if (uart_init(&uart0) !=0)//初始化串口
    {
        return -1;
    }

    //配置串口
    uart1.uartId = 1;//配置串口号
    uart1.uartRecvCb = uart1RecvData;//设置接收数据函数
    uart1.config.baudrate = 115200;//波特率
    uart1.config.byte_size = CM_UART_BYTE_SIZE_8;//数据位数
    uart1.config.flow_ctrl = CM_UART_FLOW_CTRL_NONE;//硬件流控
    uart1.config.parity = CM_UART_PARITY_NONE;//奇偶校验
    uart1.config.stop_bit = CM_UART_STOP_BIT_ONE;//停止位
    uart1.config.is_lpuart = 0;//若要配置为低功耗模式可改为1
    if (uart_init(&uart1) !=0)//初始化串口
    {
        return -1;
    }
    
    return 0;
}

测试

4,再增加上串口2

代码语言：javascript复制
#include "cm_sys.h"
#include "cm_os.h"
#include "cm_mem.h"
#include "stdio.h"
#include "stdlib.h"
#include "stdarg.h"
#include <string.h>

#include "cm_gpio.h"
#include "cm_iomux.h"
#include "cm_uart.h"

#include "uart.h"


uartStruct uart0={0};//定义串口结构体变量
uartStruct uart1={0};//定义串口结构体变量
uartStruct uart2={0};//定义串口结构体变量

void uartRecvData(uint32_t flags, char *data, int len)
{
    uartSendData(&uart0, data, len);//把接收的数据返回
}
void uart1RecvData(uint32_t flags, char *data, int len)
{
    uartSendData(&uart1, data, len);//把接收的数据返回
}
void uart2RecvData(uint32_t flags, char *data, int len)
{
    uartSendData(&uart2, data, len);//把接收的数据返回
}
//相当于程序的main函数
int cm_opencpu_entry(char * param)
{
    (void)param;

    //配置串口
    uart0.uartId = 0;//配置串口号
    uart0.uartRecvCb = uartRecvData;//设置接收数据函数
    uart0.config.baudrate = 115200;//波特率
    uart0.config.byte_size = CM_UART_BYTE_SIZE_8;//数据位数
    uart0.config.flow_ctrl = CM_UART_FLOW_CTRL_NONE;//硬件流控
    uart0.config.parity = CM_UART_PARITY_NONE;//奇偶校验
    uart0.config.stop_bit = CM_UART_STOP_BIT_ONE;//停止位
    uart0.config.is_lpuart = 0;//若要配置为低功耗模式可改为1
    if (uart_init(&uart0) !=0)//初始化串口
    {
        return -1;
    }

    //配置串口
    uart1.uartId = 1;//配置串口号
    uart1.uartRecvCb = uart1RecvData;//设置接收数据函数
    uart1.config.baudrate = 115200;//波特率
    uart1.config.byte_size = CM_UART_BYTE_SIZE_8;//数据位数
    uart1.config.flow_ctrl = CM_UART_FLOW_CTRL_NONE;//硬件流控
    uart1.config.parity = CM_UART_PARITY_NONE;//奇偶校验
    uart1.config.stop_bit = CM_UART_STOP_BIT_ONE;//停止位
    uart1.config.is_lpuart = 0;//若要配置为低功耗模式可改为1
    if (uart_init(&uart1) !=0)//初始化串口
    {
        return -1;
    }

    //配置串口
    uart2.uartId = 2;//配置串口号
    uart2.uartRecvCb = uart2RecvData;//设置接收数据函数
    uart2.config.baudrate = 115200;//波特率
    uart2.config.byte_size = CM_UART_BYTE_SIZE_8;//数据位数
    uart2.config.flow_ctrl = CM_UART_FLOW_CTRL_NONE;//硬件流控
    uart2.config.parity = CM_UART_PARITY_NONE;//奇偶校验
    uart2.config.stop_bit = CM_UART_STOP_BIT_ONE;//停止位
    uart2.config.is_lpuart = 0;//若要配置为低功耗模式可改为1
    if (uart_init(&uart2) !=0)//初始化串口
    {
        return -1;
    }
    
    return 0;
}

测试

.

开发 配置 事件 sdk uart

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