zhyinch
2020-11-27 4d532fcd1dcf3484a3e614347aa2164ca331ab74
Ô´Âë/ºËÐİå/Src/application/serial_at_cmd_app.c
@@ -1,71 +1,141 @@
#include "serial_at_cmd_app.h"
#include "global_param.h"
#include <string.h>
#include <stdio.h>
#include "dw_app.h"
#include "RTC.h"
#include "Usart.h"
uint8_t g_frame_data[MAX_FRAME_LEN] = {0};
uint8_t g_frame_data_len = 0;
#define CMD_READ   1
#define CMD_WRITE   2
#define CMD_REPLY 3
#define EUART_RX_BUF_SIZE 200
typedef enum{   UsartReceiveWaitHead0,
            UsartReceiveWaitHead1,
            UsartReceiveWaitMsgType,
            UsartReceiveWaitLength,
            UsartReceiveWaitCMD,
            UsartReceiveWaitIndex,
            UsartReceiveWaitDataLen,
            UsartReceiveWaitData,
            UsartReceiveWaitChecksum0,
            UsartReceiveWaitChecksum1
}UsartRecvPackState;
uint8_t mUsartReceivePack[100] = {0};
uint32_t g_alarm_dist = 200;
uint8_t g_alarm_dev = 0;
void ParseFrame(void)
void SendComMap(uint8_t data_length, uint8_t index)
{
   if(!memcmp(g_frame_data, "SET", 3))
   static uint8_t send_frame[EUART_RX_BUF_SIZE];
   uint16_t checksum = 0;
   send_frame[0] = 0x55;
   send_frame[1] = 0xAA;
   send_frame[2] = 0x03;
   send_frame[3] = data_length+5;
   send_frame[4] = CMD_REPLY;
   send_frame[5] = index<<1;
   send_frame[6] = data_length;
   memcpy(&send_frame[7], &g_com_map[index], data_length);
   for(int i = 0; i<(data_length+5); i++)
   {
      g_alarm_dist = (g_frame_data[3]-'0')*1000 + (g_frame_data[4]-'0')*100 +  (g_frame_data[5]-'0')*10 + (g_frame_data[6]-'0');
      checksum += send_frame[2+i];
   }
   else if(!memcmp(g_frame_data, "DEV", 3))
   {
      g_alarm_dev = g_frame_data[3]-'0';
   }
   checksum = Checksum_u16(&send_frame[2],5+data_length);
   memcpy(&send_frame[7+data_length],&checksum,2);
   UART_PushFrame(send_frame, data_length+9);
}
u16 rec_checksum;
void UsartParseDataHandler(uint8_t data)
{
   static uint8_t s_usart_state = 0;
   static uint8_t s_data_pos;
   static UsartRecvPackState usart_receive_state = UsartReceiveWaitHead0;
   uint16_t checksum = 0;
   static uint8_t pack_datalen = 0,pack_length = 0,pack_index = 0,pack_msgtype = 0,pack_cmd = CMD_READ;
   static uint8_t index = 0;
   
   switch(s_usart_state)
   {
      case 0:
         if(data=='A')   s_usart_state=  1;
      break;
      case 1:
         if(data=='T')   s_usart_state = 2;
      break;
   if(usart_receive_state == UsartReceiveWaitChecksum1) {         //若收到校验和包
      checksum = 0;
      for(int i = 0; i<pack_length-5; i++) {
         checksum += mUsartReceivePack[i];
      }
      checksum += pack_cmd;
      checksum += pack_length;
      checksum += pack_index;
      checksum += pack_datalen;
      checksum += pack_msgtype;
      checksum = ~checksum;
      cmd_mode = 0;
      rec_checksum = rec_checksum|(data<<8);
      if((rec_checksum) == (checksum))            //校验通过
      {
         switch(pack_cmd)
         {
            case CMD_WRITE:
               //从mUsartReceivePack中读取pack_length长度的字节,放到全局变量中
               memcpy((uint8_t*)&g_com_map + pack_index, mUsartReceivePack, pack_datalen);
               //返回一个error状态
               //SendComMap(pack_datalen,pack_index);
            if((g_com_map[CNT_REBOOT]&0xff)==1)
            {
               returnfactory_parameter();
               save_com_map_to_flash();
               delay_ms(100);
               SCB->AIRCR = 0X05FA0000|(unsigned int)0x04; //软复位回到bootloader
            }
               save_com_map_to_flash();
               delay_ms(100);
               NVIC_SystemReset();
               break;
            case CMD_READ:
               //read包中data字节,即mUsartReceivePack[0]表示数据长度;
            //从g_com_data结构体中的第index位置读取长度为mUsartReceivePack[0]的字节,发送出来
               SendComMap(pack_datalen,pack_index>>1);
               break;
            default:
               break;
         }
      }
      usart_receive_state = UsartReceiveWaitHead0;
      pack_index = 0;
      pack_length = 0;
      index=0;
   }  else if((usart_receive_state == UsartReceiveWaitChecksum0) ) {
         rec_checksum = data;
      usart_receive_state = UsartReceiveWaitChecksum1;
   }else if((usart_receive_state == UsartReceiveWaitData) ) {   //若果收到的是正常通讯包
      mUsartReceivePack[index] = data;
      index++;
      if(index == pack_length-5) {      //如果收到的index与长度相等
         usart_receive_state = UsartReceiveWaitChecksum0;
      }
   } else if(usart_receive_state == UsartReceiveWaitDataLen) {                  //收到指令类型字节
      pack_datalen = data;
      usart_receive_state = UsartReceiveWaitData;
   }else if(usart_receive_state == UsartReceiveWaitIndex) {                  //收到指令类型字节
      pack_index = data;
      usart_receive_state = UsartReceiveWaitDataLen;
   } else if(usart_receive_state == UsartReceiveWaitCMD) {                     //收到指令类型字节
      pack_cmd = data;
      usart_receive_state = UsartReceiveWaitIndex;
   } else if(usart_receive_state == UsartReceiveWaitLength) {                  //收到长度字节
      
      case 2:
         if(data=='+')
         {
            s_usart_state = 3;
            s_data_pos = 0;
            g_frame_data_len = 0;
         }
      break;
      case 3:
         g_frame_data_len = s_data_pos;
         g_frame_data[s_data_pos++] = data;
         if(data == 0x0d)
         {
            s_usart_state = 4;
         }
         if(s_data_pos >= MAX_FRAME_LEN) //如果超过最大长度
         {
            g_frame_data_len = MAX_FRAME_LEN;
            ParseFrame();
            s_usart_state = 0;
         }
      break;
      case 4:
         if(data == 0x0a)
         {
            ParseFrame();
            s_usart_state = 0;
         }
      break;
      default: break;
         pack_length = data;
         pack_index = 0;
         usart_receive_state = UsartReceiveWaitCMD;
   } else if((usart_receive_state == UsartReceiveWaitHead0) && (data == 0x55)) {   //收到第一个包头
      usart_receive_state = UsartReceiveWaitHead1;
   } else if((usart_receive_state == UsartReceiveWaitHead1) && (data == 0xAA)) {   //收到第二个包头
      usart_receive_state = UsartReceiveWaitMsgType;
   }else if ((usart_receive_state == UsartReceiveWaitMsgType) && (data == 0x3)) {
      usart_receive_state = UsartReceiveWaitLength;
      pack_msgtype = data;
   }
   else {
      usart_receive_state = UsartReceiveWaitHead0;
      pack_index = 0;
      pack_length = 0;
   }
}