前言:
我了解的串口接收指令的方式有:在这里插入图片描述
1、接收数据中断+特定帧尾
2、接收数据中断+空闲中断
3、DMA接收+空闲中断
我最推荐第三种,尤其是数据量比较大且频繁的时候
#include "my_it.h"
#include "mymain.h"
#include "main.h"
#include "gpio.h"
#include "tim.h"
#include "usart.h"
#include "uart_lcd.h"
void MY_UART_IDLECallback(UART_HandleTypeDef *huart)//自定义的串口超时中断回调函数
{
HAL_UART_DMAStop(&huart3); //暂停DMA
unsigned char data_length = BUFFER_SIZE - __HAL_DMA_GET_COUNTER(&hdma_usart3_rx); //计算此帧数据长度
if(data_length == RBUFF_UNIT)
{
unsigned char recv_data[10] = {0};
memcpy(recv_data,receive_buff,RBUFF_UNIT);
RxDataBufCheck(recv_data,RBUFF_UNIT);
}
//HAL_UART_Transmit_DMA(&huart3,receive_buff,data_length); //回环测试,接收到什么返回什么
HAL_UART_Receive_DMA(&huart3, (unsigned char*)receive_buff, BUFFER_SIZE); //继续开启接收
data_length = 0;
}
void MY_UART_IRQHandler(UART_HandleTypeDef *huart)//此函数调用放在void USART3_IRQHandler(void)内执行
{
if(USART3 == huart->Instance)
{
if(RESET != __HAL_UART_GET_FLAG(&huart3, UART_FLAG_IDLE)) //判断是否是空闲中断
{
__HAL_UART_CLEAR_IDLEFLAG(&huart3); //清除空闲中断
MY_UART_IDLECallback(huart); //空闲中断处理函数
}
}
}
my_it.h
#ifndef __MY_IT_H
#define __MY_IT_H
#include "log.h"
#include "usart.h"
extern DMA_HandleTypeDef hdma_usart3_rx;
void MY_UART_IRQHandler(UART_HandleTypeDef *huart);
void MY_UART_IDLECallback(UART_HandleTypeDef *huart);
#endif
uart_lcd.c
#include "uart_lcd.h"
#include "sensor.h"
#include "dev_control.h"
#include
unsigned char UART_RxDataBuf[R_NUM][RBUFF_UNIT]; //接收缓冲区
unsigned char *UART_RxDataInPtr;
unsigned char *UART_RxDataOutPtr;
unsigned char *UART_RxDataEndPtr;
unsigned char UART_TxDataBuf[T_NUM][TBUFF_UNIT]; //发送缓冲区
unsigned char *UART_TxDataInPtr;
unsigned char *UART_TxDataOutPtr;
unsigned char *UART_TxDataEndPtr;
unsigned char receive_buff[BUFFER_SIZE]; //串口接收临时缓存
//发送数据实例
#include "uart_lcd.h"
#include "sensor.h"
#include "dev_control.h"
#include
unsigned char UART_RxDataBuf[R_NUM][RBUFF_UNIT]; //接收缓冲区
unsigned char *UART_RxDataInPtr;
unsigned char *UART_RxDataOutPtr;
unsigned char *UART_RxDataEndPtr;
unsigned char UART_TxDataBuf[T_NUM][TBUFF_UNIT]; //发送缓冲区
unsigned char *UART_TxDataInPtr;
unsigned char *UART_TxDataOutPtr;
unsigned char *UART_TxDataEndPtr;
unsigned char receive_buff[BUFFER_SIZE]; //串口接收临时缓存
//发送数据实例
unsigned char lcd_send_data[] = {0xFF,0x55,0x00,0x04,0x00,0x00,0x00,0x00,0xC1,0xBB};
//大小端转化
unsigned short swapEndian16(unsigned short value)
{
return ((value & 0xFF00) >> 8) | ((value & 0x00FF) << 8);
}
unsigned int swapEndian32(unsigned int value)
{
return ((value & 0xFF000000) >> 24) |
((value & 0x00FF0000) >> 8) |
((value & 0x0000FF00) << 8) |
((value & 0x000000FF) << 24);
}
/* Table of CRC values for high order byte */
const uint8_t crctablehi[] = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
0x40
};
/* Table of CRC values for low order byte */
const uint8_t crctablelo[] = {
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4,
0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD,
0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7,
0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE,
0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2,
0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB,
0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91,
0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88,
0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80,
0x40
};
unsigned short crc16Modbus(unsigned char *ptr, unsigned short len)
{
unsigned char crchi = 0xff;
unsigned char crclo = 0xff;
unsigned short index;
while(len--)
{
index = crclo ^ *ptr++;
crclo = crchi ^ crctablehi[index];
crchi = crctablelo[index];
}
return (crchi | crclo << 8);//(crchi << 8 | crclo)高低字节互换
//return (crchi << 8 | crclo);
}
void uartLcdInit(void)
{
UART_RxDataInPtr = UART_RxDataBuf[0];
UART_RxDataOutPtr = UART_RxDataInPtr;
UART_RxDataEndPtr = UART_RxDataBuf[R_NUM-1];
UART_TxDataInPtr = UART_TxDataBuf[0];
UART_TxDataOutPtr = UART_TxDataInPtr;
UART_TxDataEndPtr = UART_TxDataBuf[T_NUM-1];
__HAL_UART_ENABLE_IT(&huart3, UART_IT_IDLE);//使能空闲中断
HAL_UART_Receive_DMA(&huart3, (unsigned char*)receive_buff, BUFFER_SIZE);//开始DMA接收串口数据
}
void uartLcdTask(void)//50ms调用一次,来定时处理缓存数据
{
if(UART_RxDataOutPtr != UART_RxDataInPtr)//if成立说明缓冲区有数据了
{
//解析处理数据
unsigned char recv_data[RBUFF_UNIT] = {0};
memcpy(recv_data,UART_RxDataOutPtr,RBUFF_UNIT);
RxDataBufAnalyze(recv_data);
UART_RxDataOutPtr += RBUFF_UNIT; //指针下移
if(UART_RxDataOutPtr == UART_RxDataEndPtr) //指针移动到缓冲区的尾部
{
UART_RxDataOutPtr = UART_RxDataBuf[0]; //指针归为到缓冲区开头
}
}
if(UART_TxDataOutPtr != UART_TxDataInPtr)//if成立说明了发送缓冲区有数据了
{
UARTLCD_debug("TxData:%x,%x,%x,%x,%x,%x,%x,%x,%x,%x\r\n",
UART_TxDataOutPtr[0],UART_TxDataOutPtr[1],UART_TxDataOutPtr[2],UART_TxDataOutPtr[3],UART_TxDataOutPtr[4],
UART_TxDataOutPtr[5],UART_TxDataOutPtr[6],UART_TxDataOutPtr[7],UART_TxDataOutPtr[8],UART_TxDataOutPtr[9]);
HAL_UART_Transmit_DMA(&huart3,UART_TxDataOutPtr,TBUFF_UNIT); //发送数据
UART_TxDataOutPtr += TBUFF_UNIT; //指针下移
if(UART_TxDataOutPtr == UART_TxDataEndPtr) //指针移动到了缓冲区的尾巴
{
UART_TxDataOutPtr = UART_TxDataBuf[0]; //指针归为到缓冲区开头
}
}
}
void uartLcdMainUpdate(unsigned int num) //在需要与串口屏发送数据的地方调用
{
TxDataBufSend(UARTLCD_COMMAND_INIT_CHECK,num);
}
void TxDataBufAdd(unsigned char *data)
{
memcpy(UART_TxDataInPtr,data,TBUFF_UNIT); //拷贝数据到发送缓冲区
UART_TxDataInPtr += TBUFF_UNIT; //指针下移
if(UART_TxDataInPtr == UART_TxDataOutPtr)
{
UARTLCD_error("UART_TxDataBuf exceed !!!\r\n"); //缓存满了报错提示
}
if(UART_TxDataInPtr == UART_TxDataEndPtr) //指针移动到缓冲区的尾部
{
UART_TxDataInPtr = UART_TxDataBuf[0]; //指针归为到缓冲区开头
}
}
void RxDataBufAdd(unsigned char *data)
{
memcpy(UART_RxDataInPtr,data,RBUFF_UNIT); //拷贝数据到接收缓冲区
UART_RxDataInPtr += RBUFF_UNIT; //指针下移
if(UART_RxDataInPtr == UART_RxDataOutPtr) //缓存满了报错提示
{
UARTLCD_error("UART_RxDataBuf exceed !!!\r\n");
}
if(UART_RxDataInPtr == UART_RxDataEndPtr) //指针移动到缓冲区的尾部
{
UART_RxDataInPtr = UART_RxDataBuf[0]; //指针归为到缓冲区开头
}
// for(int i = 0;i<10;i++)
// {
// for(int j = 0;j<10;j++)
// {
// Debug_printf("%x,",UART_RxDataBuf[i][j]);
// }
// Debug_printf("\r\n");
// }
// Debug_printf("\r\n");
}
void TxDataBufPack(unsigned char command,unsigned int num) //发送串口数据封包
{
uartLcdDataFrame_t * send_data = (uartLcdDataFrame_t *)lcd_send_data;
send_data->bodyData.commandData = command;
send_data->bodyData.controlData = swapEndian32(num);
unsigned char bodyData[RBUFF_UNIT-2] = {0};
memcpy(bodyData,&send_data->bodyData,RBUFF_UNIT-2);
unsigned short send_crc = crc16Modbus(bodyData,RBUFF_UNIT-2);
send_data->crcData = send_crc;
TxDataBufAdd((unsigned char *)send_data);
}
void TxDataBufSend(unsigned char command,unsigned int num) //直接发送数据,不经过缓存
{
uartLcdDataFrame_t * send_data = (uartLcdDataFrame_t *)lcd_send_data;
send_data->bodyData.commandData = command;
send_data->bodyData.controlData = swapEndian32(num);
unsigned char bodyData[RBUFF_UNIT-2] = {0};
memcpy(bodyData,&send_data->bodyData,RBUFF_UNIT-2);
unsigned short send_crc = crc16Modbus(bodyData,RBUFF_UNIT-2);
send_data->crcData = send_crc;
unsigned char send_data_[TBUFF_UNIT] = {0};
memcpy(send_data_,send_data,TBUFF_UNIT);
UARTLCD_debug("TxDataBufSend:%x,%x,%x,%x,%x,%x,%x,%x,%x,%x\r\n",
send_data_[0],send_data_[1],send_data_[2],send_data_[3],send_data_[4],
send_data_[5],send_data_[6],send_data_[7],send_data_[8],send_data_[9]);
HAL_UART_Transmit_DMA(&huart3,(unsigned char *)lcd_send_data,TBUFF_UNIT);
HAL_Delay(2);
}
void RxDataBufCheck(unsigned char *data,unsigned char length) //校验接收到的串口数据是不是一帧数据
{
if(length != RBUFF_UNIT) return;
uartLcdDataFrame_t * recv_data = (uartLcdDataFrame_t *)data;
if(recv_data->bodyData.headData == 0x55FF)//校验头
{
unsigned char bodyData[RBUFF_UNIT-2] = {0};
memcpy(bodyData,&recv_data->bodyData,RBUFF_UNIT-2);
unsigned short recv_crc = crc16Modbus(bodyData,RBUFF_UNIT-2);
if(recv_crc == recv_data->crcData)//校验CRC
{
// Debug_printf("RxDataBufCheck recv data:%x,%x,%x,%x,%x\r\n",
// recv_data->bodyData.headData,recv_data->bodyData.commandData,recv_data->bodyData.lengthData,
// recv_data->bodyData.controlData,recv_data->crcData);
RxDataBufAdd(data);//加入环形缓冲区
}
}
}
void RxDataBufAnalyze(unsigned char *data) //处理串口指令
{
UARTLCD_debug("RxDataBufAnalyze:%x,%x,%x,%x,%x,%x,%x,%x,%x,%x\r\n",data[0],data[1],data[2],data[3],data[4],data[5],data[6],data[7],data[8],data[9]);
uartLcdDataFrame_t * recv_data = (uartLcdDataFrame_t *)data;
switch(recv_data->bodyData.commandData)
{
case UARTLCD_COMMAND_INIT_CHECK:
break;
case UARTLCD_COMMAND_FLOW_LEVEL:
break;
case UARTLCD_COMMAND_SMOKE_CLEAN:
break;
case UARTLCD_COMMAND_AIR_CONSUME:
break;
case UARTLCD_COMMAND_PRESSURE_NOW:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_PRESSURE_TARGET:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_PRESSURE_REDUCE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_PRESSURE_ADD:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_FLOW_NOW:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_FLOW_TARGET:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_FLOW_REDUCE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_FLOW_ADD:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_PRESSURE_MODE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_HEAT_STATE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_AIR_START:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_AIR_INPUT_STATE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_BUZZER_LEVEL:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_LANGUAGE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_MESSAGE_WARNING:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_LIGHT_WARNING:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_USB_CHANGE:
devBuzzerSetNum(1);
break;
case UARTLCD_COMMAND_VERSION_MESSGAE:
devBuzzerSetNum(1);
break;
default:
break;
}
}
uart_lcd.h
#ifndef __UART_LCD_H
#define __UART_LCD_H
#include "main.h"
#include "log.h"
#include "usart.h"
#include "eeprom.h"
#include
#define UARTLCD_TASK_PERIOD 2 //
#define UARTLCD_LOG_EN 0
#if UARTLCD_LOG_EN
#define UARTLCD_printf(format, ...) printf(RTT_CTRL_TEXT_WHITE format , ##__VA_ARGS__)//"\r\n"
#define UARTLCD_info(format, ...) printf(RTT_CTRL_TEXT_GREEN"[uartlcd]info:" format , ##__VA_ARGS__)
#define UARTLCD_debug(format, ...) printf(RTT_CTRL_TEXT_WHITE"[uartlcd]debug:" format , ##__VA_ARGS__)
#define UARTLCD_warning(format, ...) printf(RTT_CTRL_TEXT_YELLOW"[uartlcd]warning:" format , ##__VA_ARGS__)
#define UARTLCD_error(format, ...) printf(RTT_CTRL_TEXT_RED"[uartlcd]error:" format ,##__VA_ARGS__)
#else
#define UARTLCD_printf(format, ...)
#define UARTLCD_info(format, ...)
#define UARTLCD_debug(format, ...)
#define UARTLCD_warning(format, ...)
#define UARTLCD_error(format, ...)
#endif
#define R_NUM 20 //缓冲区的个数(可以缓存几帧数据)
#define RBUFF_UNIT 10 //缓冲区一帧数据的长度
#define T_NUM 20 //缓冲区的个数(可以缓存几帧数据)
#define TBUFF_UNIT 10 //缓冲区一帧数据的长度
extern unsigned char UART_RxDataBuf[R_NUM][RBUFF_UNIT]; //接收缓存区
extern unsigned char *UART_RxDataInPtr; //接收缓存区存放数据的位置
extern unsigned char *UART_RxDataOutPtr; //接收缓存区读取数据的位置
extern unsigned char *UART_RxDataEndPtr; //接收缓存区结束的位置
extern unsigned char UART_TxDataBuf[T_NUM][TBUFF_UNIT]; //发送缓存区
extern unsigned char *UART_TxDataInPtr; //发送缓存区存放数据的位置
extern unsigned char *UART_TxDataOutPtr; //发送缓存区读取数据的位置
extern unsigned char *UART_TxDataEndPtr; //发送缓存区结束的位置
#define BUFFER_SIZE 100 //串口接收数据的临时缓存区大小
extern unsigned char receive_buff[BUFFER_SIZE]; //串口接收数据的临时缓存区
typedef struct
{
unsigned short headData; //数据头
unsigned char commandData; //数据指令
unsigned char lengthData; //数据内容长度
unsigned int controlData; //数据内容
} uartLcdDataBody_t;
typedef struct
{
uartLcdDataBody_t bodyData; //消息体
unsigned short crcData; //数据校验
} uartLcdDataFrame_t;
enum{
UARTLCD_COMMAND_INIT_CHECK,
UARTLCD_COMMAND_FLOW_LEVEL,
UARTLCD_COMMAND_SMOKE_CLEAN,
UARTLCD_COMMAND_AIR_CONSUME,
UARTLCD_COMMAND_PRESSURE_NOW,
UARTLCD_COMMAND_PRESSURE_TARGET,
UARTLCD_COMMAND_PRESSURE_REDUCE,
UARTLCD_COMMAND_PRESSURE_ADD,
UARTLCD_COMMAND_FLOW_NOW,
UARTLCD_COMMAND_FLOW_TARGET,
UARTLCD_COMMAND_FLOW_REDUCE,
UARTLCD_COMMAND_FLOW_ADD,
UARTLCD_COMMAND_PRESSURE_MODE,
UARTLCD_COMMAND_HEAT_STATE,
UARTLCD_COMMAND_AIR_START,
UARTLCD_COMMAND_AIR_INPUT_STATE,
UARTLCD_COMMAND_BUZZER_LEVEL,
UARTLCD_COMMAND_LANGUAGE,
UARTLCD_COMMAND_MESSAGE_WARNING,
UARTLCD_COMMAND_LIGHT_WARNING,
UARTLCD_COMMAND_USB_CHANGE,
UARTLCD_COMMAND_VERSION_MESSGAE
};
void uartLcdInit(void);
void uartLcdEndInit(void);
void uartLcdTask(void);
unsigned short swapEndian16(unsigned short value);
unsigned int swapEndian32(unsigned int value);
unsigned short crc16Modbus(unsigned char *ptr, unsigned short len);
void uartLcdMainUpdate(unsigned int num);
void TxDataBufAdd(unsigned char *data); //向发送缓冲区加入一条待发送的数据
void RxDataBufAdd(unsigned char *data); //向接收缓冲区加入一条待处理的数据
void RxDataBufCheck(unsigned char *data,unsigned char length); //检验接收到串口数据是不是一帧合格的数据
void RxDataBufAnalyze(unsigned char *data); //处理串口指令
void TxDataBufPack(unsigned char command,unsigned int num); //发送串口数据封包
void TxDataBufSend(unsigned char command,unsigned int num); //直接发送串口数据,不经过缓存
#endif