extern void At_Commands_Rec(void) { #if MD_AliYun_En==1 U8 _u8Cmd,_u8Hour,_u8Second,_u8Cnt; U16 _u16Found,_u16Address,_u16Data,i,j; // if(u8RecFinsh4G) { // u8RecFinsh4G = 0; if(0 != mystrstr(au8Rx0, "+QMTRECV: 0,0,\"/ota/device/upgrade", RX_NUM)) {// ½øÈë OTA Éý¼¶ _u16Found = mystrstr(au8Rx0, "\"size\":", RX_NUM); u32FileLen = CacFileLen(_u16Found); u16OtaTotaCnt = u32FileLen / OTA_DATA_LEN; if(u32FileLen % OTA_DATA_LEN) { u16OtaTotaCnt++; } _u16Found = mystrstr(au8Rx0, "\"streamId\":", RX_NUM); for(i=0,j=_u16Found; i<16; i++) { if(0x2C != au8Rx0[j]) { u8StreamId[i] = au8Rx0[j]; } else { u8StreamLen = j-_u16Found; break; } j++; } _u16Found = mystrstr(au8Rx0, "\"md5\":\"", RX_NUM); ascii_to_hex(&au8Rx0[_u16Found], md5_data0, 16); if((0 == BootEn_f)&&(CMD_BIGDATA_READY == u8M4gCMD)) { u8WifiOtaEn = 1; } else { if((0 != BootEn_f)&&(CMD_BIGDATA_READY == u8M4gCMD)) { u8WifiOtaEn = 2; } else { u8WifiOtaEn = 1; } Boot0x19_f = 1; u8M4gCMD = CMD_ASK_BIGDATA; } ReAck_Bigdata_Ready(); u8RxErrTime0 = RESET_TIME2; u8Cmd0x1C = 0; u8CmdCnt0 = 0; u8TxGap0 = 0; //u8WifiOtaPreTime = 2+1; u16SendGapTime4G = 3; MEMCLR(au8Ota,sizeof(au8Ota)); } else if((((0 != mystrstr(au8Rx0, "ERROR", RX_NUM))&&(QCCID != u8at_command)) ||(0 != mystrstr(au8Rx0, "error", RX_NUM)) ||(0 != mystrstr(au8Rx0, "string is invalid", RX_NUM)) ||(0 != mystrstr(au8Rx0, "no active session for", RX_NUM))) &&(u8at_command > CLOSE)) { u16SendGapTime4G = 1000/5; if(u8ErrorCnt++ > 15) { u8ErrorCnt = 0; At_Rstset(RST_TIME+10); } #if De_TxRx==1 u16RxErrCnt++; #endif } #if HC_FLASH_En==1 else if(0 != mystrstr(au8Rx0,"{\"task\":{\"jobDocument\":{",RX_NUM)) { _u16Found = mystrstr(au8Rx0, "{\"id\":\"", RX_NUM); if(0 != _u16Found) { for(i=0,j=_u16Found; i<12; i++) { if(0x22 != au8Rx0[j]) { u08RxId[i] = au8Rx0[j]; } else { u08IdCnt = j-_u16Found; break; } j++; } } _u16Found = mystrstr(au8Rx0, "\"taskId\":\"", RX_NUM); if(0 != _u16Found) { memcpy(u08TaskId,&au8Rx0[_u16Found], 32); } u08TimeEr = 0; u08TimeOk = 0; _u8Cnt = 0; _u16Found = mystrstr(au8Rx0, "{\"T\":[{\"A\":\"", RX_NUM); if(0 != _u16Found) { for(i=0; i<12; i++) { _u8Hour = (au8Rx0[_u16Found+0]-48)*10+au8Rx0[_u16Found+1]-48; _u8Second = (au8Rx0[_u16Found+3]-48)*10+au8Rx0[_u16Found+4]-48; _u16Data = (U16)(au8Rx0[_u16Found+12]-48)*100+(U16)(au8Rx0[_u16Found+13]-48)*10+au8Rx0[_u16Found+15]-48; if((_u8Hour > 24)||(_u8Second > 59)||(_u16Data > 650)) // SET_HEAT_MAX {// Êý¾ÝÒì³£ u08TimeEr++; } else {// Êý¾ÝÕý³£ u08TimeOk++; u08TimeHs[i][0] = _u8Hour ; u08TimeHs[i][1] = _u8Second; u08TimeTs[i] = _u16Data ; if(_u16Data > 45) { _u8Cnt++; } } _u16Found += 23; // 13 } u16SendGapTime4G = 3; if(u08TimeOk > 12) { u08TimeOk = 12; } if(u08TimeEr > 0) {// Êý¾ÝÒì³£ if(u8Tx12ErrCnt++ < 10) { u8TxCnt12Wait = 1; } memset(u08TimeTs, 0, sizeof(u08TimeTs)); } else {// Êý¾ÝÕý³£ u8at_command = QMTPUBEX_Up1; //EepromWritePage02(BIT7, 1); FlashSave(1); u8Send_4G_TxCnt10 = 1; if(_u8Cnt > 1) { if(0 == u08TimeEn) { u08TimeEn = 1; //EepromWritePage(BIT2, 1); //u08ComPcWrDelay = PC_Rx_GAP_TIME; } } else { if(0 != u08TimeEn) { u08TimeEn = 0; //EepromWritePage(BIT2, 1); //u08ComPcWrDelay = PC_Rx_GAP_TIME; } } } u8Send_4G_TxCnt13 = 2; } } #endif else { //u8ErrorCnt = 0; #if HC_FLASH_En==1 if((0 != mystrstr(au8Rx0, "+QMTRECV:", RX_NUM)) &&(1 == Init_4G)&&(10 != u84GTxCnx)&&(11 != u84GTxCnx) &&(12 != u84GTxCnx)&&(13 != u84GTxCnx)) #else if((0 != mystrstr(au8Rx0, "+QMTRECV:", RX_NUM))&&(1 == Init_4G)) #endif { u8ErrorCnt = 0; if(0 != mystrstr(au8Rx0, "\"message\":\"success\"}", RX_NUM)) {// OTAÊý¾Ý +QMTRECV: 0,0,"/sys/a1UZKWl8gST/AL02-B002-003/thing/file/download_reply" u16SendGapTime4G = 2+3; rsp_status_4G = AT_RSP_SUCCESS; } #if 0 else if(0 != mystrstr(au8Rx0, "/thing/model/down_raw", RX_NUM)) // (0 != mystrstr(user_4G_rx_buf, sub_para.topic, SIZE_RX_BUF)) {//´¦ÀíÉèÖÃÊý¾Ý+QMTRECV: 0,0,"/sys/ProductKey/DeviceName/thing/model/down_raw","xxxxxxxxxx" //_u16Found = mystrstr(au8Rx0, sub_para.topic, RX_NUM); _u16Found = mystrstr(au8Rx0, "/thing/model/down_raw", RX_NUM); _u16Found += 3; //¼ÓÉÏµØÖ·Æ«ÒÆ _u8Cmd = au8Rx0[_u16Found]; if(0x01 == _u8Cmd) {//ÊôÐÔÉèÖÃ u8DownRawRe = 1; //½âÎöµØÖ·ºÍÊý¾Ý _u16Address = MAKEWORD(au8Rx0[_u16Found+1], au8Rx0[_u16Found+2]); _u16Data = MAKEWORD(au8Rx0[_u16Found+3], au8Rx0[_u16Found+4]); if((_u16Address >= 0)&&(_u16Address <= 8) &&(0 != (u16PumpMode & BIT7))) {// bit7: 4GÄ£¿é 0:Ê¹ÓÃ£¬1½ûÓÃ return; } else if (360 == _u16Address) {//±¨¾¯¸´Î» _u16Pwr[0] = _u16Pwr[0] | BIT3; } else if (361 == _u16Address) {//Ô¤ÈÈ¿ª¹Ø u8PreheatSwitch++; if(u8PreheatSwitch >= 2) { _u16Pwr[0] = _u16Pwr[0] | BIT5; u8PreheatSwitch = 0; } } else if (80 == _u16Address) {//4G¶¨Ê±µ÷ÎÂ¹¦ÄÜ //if(s16TimeOnEn != _u16Data) if(_u16Data != ((u16Heat_Dry_En&BIT11)>> 11)) { if(0 != _u16Data) { u8Send_4G_TxCnt12 = 1; // »ñÈ¡Æ½Ì¨×Ô¶¨ÒåÈÎÎñID,ÕýÔÚÖ´ÐÐµÄ£¬Ôò»ñÈ¡×Ô¶¨ÈÎÎñÊý¾Ý u8Tx12ErrCnt = 0; _u16Pwr[81] |= BIT11; } else { _u16Pwr[81] &= (~BIT11); } _u16Prd[81] = _u16Pwr[81]; u16Heat_Dry_En = _u16Pwr[81]; EepromWritePage(BIT2, 1); } } else if((3 == _u16Address)&&(1 == _u16Pwr[15])) {// 3 ÖÆÀäÉè¶¨ÎÂ¶È ½ÚÄÜ _u16Pwr[5] = _u16Data; } else if((4 == _u16Address)&&(1 == _u16Pwr[15])) {// 4 ÖÆÈÈÉè¶¨ÎÂ¶È ½ÚÄÜ _u16Pwr[6] = _u16Data; } else { _u16Pwr[_u16Address] = _u16Data; if ((114 == _u16Address)&&(u8DispType == 0)) {// ¾²Òô (PunpÎÄ±¾ÆÁ) if((Com3.wrWord[114] <= 3)&&(Com3.wrWord[114] >= 0)) { _u16Prd[114] = _u16Data; u16SilenceLevel = _u16Data; EepromWritePage(BIT7, 3); } } } if(155 == _u16Address) {// ÉèÖÃË®±ÃÁ÷Á¿ IniE2By4G(); } else if(144 == _u16Address) {// ÉÏ´«Ê±¼ä DogResetBy4G(); } else if(141 == _u16Address) { if(_u16Data & BIT5) { WifiDefrostOnA(); _u16Pwr[_u16Address] &= ~BIT5; } else if(_u16Data & BIT6) { WifiDefrostOnB(); _u16Pwr[_u16Address] &= ~BIT6; } } else { u8WifiTryTime = 0; } u16SendGapTime4G = 3; // *(1000/5); // 3ÃëºóÉÏ´«±ä»¯²ÎÊý if((15 != _u16Address)&&(114 != _u16Address) &&(_u16Address >= 9)&&(_u16Address <= 159)) { u8Send_4G_TxCnt01 = 1; } else if((_u16Address >= 214)&&(_u16Address <= 294)) { u8Send_4G_TxCnt02 = 1; } } rsp_status_4G = AT_RSP_SUCCESS; } else { rsp_status_4G = AT_RSP_FAILED; } #endif } else { At_Command2_Rec(); } } //memset(au8Rx0, 0, sizeof(au8Rx0)); } #endif }这段代码是modubs rtu的06功能码实现，请帮我分析一下这段代码