JZsdk_Uart.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <termios.h>
#include <sys/time.h>
#include "BaseConfig.h"
#include "JZsdk_uart/JZsdk_Uart_UartDeal.h"
#include "JZsdk_Uart.h"
#include "../JZsdk_Hal.h"
/********************
*
*
* 串口使能
使能一个串口 返回设备号
变量1 串口设备名
变量2 比特率
返回 int 设备号
例子: UartDeal_Base_CreateReceive("/dev/ttyS2", 115200)
*
*
* **************************/
T_JZsdkReturnCode JZsdk_Uart_UartEnabled(unsigned char *UartDev, unsigned int BitRate, int *UartFd)
{
if (UartFd == NULL)
{
JZSDK_LOG_ERROR("UartFd 为空");
return JZ_ERROR_SYSTEM_MODULE_CODE_INVALID_PARAMETER;
}
//1、串口初始化
//(*UartFd) = open(UartDev, O_RDWR);
(*UartFd) = open(UartDev, O_RDWR | O_NOCTTY | O_NDELAY);
if ((*UartFd) < 0)
{
JZSDK_LOG_ERROR("打开串口 %s 失败", UartDev);
return JZ_ERROR_SYSTEM_MODULE_CODE_FAILURE;
}
else
{
JZSDK_LOG_INFO("打开串口 %s 成功", UartDev);
}
//2、获取终端信息
struct termios options;
if(tcgetattr((*UartFd),&options)!= 0) //获取终端信息
{
JZSDK_LOG_ERROR("获取终端信息失败！\n");
return JZ_ERROR_SYSTEM_MODULE_CODE_FAILURE;
}
//3、设置比特率
switch (BitRate)
{
case 115200:
cfsetispeed(&options, B115200);
cfsetospeed(&options, B115200);
break;
case 230400:
cfsetispeed(&options, B230400);
cfsetospeed(&options, B230400);
break;
case 460800:
cfsetispeed(&options, B460800);
cfsetospeed(&options, B460800);
break;
case 921600:
cfsetispeed(&options, B921600);
cfsetospeed(&options, B921600);
break;
case 1000000:
cfsetispeed(&options, B1000000);
cfsetospeed(&options, B1000000);
break;
default:
return JZ_ERROR_SYSTEM_MODULE_CODE_FAILURE;
break;
}
options.c_cflag |= (unsigned) CLOCAL;
options.c_cflag |= (unsigned) CREAD;
options.c_cflag &= ~(unsigned) CRTSCTS;
options.c_cflag &= ~(unsigned) CSIZE;
options.c_cflag |= (unsigned) CS8;
options.c_cflag &= ~(unsigned) PARENB;
options.c_iflag &= ~(unsigned) INPCK;
options.c_cflag &= ~(unsigned) CSTOPB;
options.c_oflag &= ~(unsigned) OPOST;
options.c_lflag &= ~((unsigned) ICANON | (unsigned) ECHO | (unsigned) ECHOE | (unsigned) ISIG);
options.c_iflag &= ~((unsigned) BRKINT | (unsigned) ICRNL | (unsigned) INPCK | (unsigned) ISTRIP | (unsigned) IXON);
options.c_cc[VTIME] = 0;
options.c_cc[VMIN] = 0;
tcflush((*UartFd),TCIOFLUSH); //刷清输入、输出队列
tcsetattr((*UartFd),TCSAFLUSH,&options); //串口设置使能
JZSDK_LOG_INFO("使能串口 波特率%d成功",BitRate);
return JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
}
/*
* 串口重初始化，比较特殊，该函数仅能用于已经被初始化的串口
* 注意, 外部初始化串口应该用hal uart reinit
*/
T_JZsdkReturnCode JZsdk_UartReinit(T_JZsdk_UartInfo* pUartInf, int PortId)
{
//然后关闭串口 注：该函数有延时
JZsdk_Uart_CloseUartThead(PortId);
return JZsdk_UartInit(pUartInf);
}
//该函数仅被hal.c引用，注意, 外部初始化串口应该用haluartinit
T_JZsdkReturnCode JZsdk_UartInit(T_JZsdk_UartInfo* pUartInfo)
{
T_JZsdkReturnCode ret = JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
//串口初始化
ret = JZsdk_Uart_UartEnabled(pUartInfo->DevicePath, pUartInfo->Baudrate, &pUartInfo->UartId);
if (ret != JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS)
{
return ret;
}
//串口接收初始化
JZsdk_Uart_UartDeal_Receive(pUartInfo->UartId, pUartInfo->Base.PortId);
JZSDK_LOG_INFO("init %s sucess", JZsdk_DefineCode_GetPortName(pUartInfo->Base.PortId));
return JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
}