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_Hal.h"
static unsigned char *Get_UartDevPath(int UartDev)
{
switch (UartDev)
{
case UART_4G:
return COMM_4G_UART_NUM;
break;
case UART_DEV_1:
return UART_DEV1_NUM;
break;
case UART_DEV_2:
return UART_DEV2_NUM;
break;
default:
return NULL;
break;
}
}
/********************
*
*
* 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
* 该函数仅能被JZsdk_HalPort_Init调用，请勿直接使用
*
* ************************/
T_JZsdkReturnCode JZsdk_Uart_ReInit(int UART_DEV_NAME, int BitRate)
{
T_JZsdkReturnCode ret = JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
int UartFd = 0;
//JZSDK_LOG_INFO("初始化串口 0x%x", UART_DEV_NAME);
//检查是否已经初始化
if(JZsdk_HalPort_UseFlag(UART_DEV_NAME) == JZ_FLAGCODE_ON)
{
//先注释掉原来的串口
JZsdk_HalPort_SetUseFlag(UART_DEV_NAME, JZ_FLAGCODE_OFF);
//然后关闭串口 注：该函数有延时
JZsdk_Uart_CloseUartThead(UART_DEV_NAME);
}
//2、串口初始化
ret = JZsdk_Uart_UartEnabled(Get_UartDevPath(UART_DEV_NAME), BitRate, &UartFd);
if (ret != JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS)
{
return ret;
}
//3、串口接收初始化
JZsdk_Uart_UartDeal_Receive(UartFd, UART_DEV_NAME);
JZSDK_LOG_INFO("init %s sucess", JZsdk_DefineCode_GetPortName(UART_DEV_NAME));
return ret;
}