#include "jt808_msg_parse.h" #include "jt808_pkg_transmit.h" #include "local_tts.h" #include "jt808_electronic_fence.h" #include "attr_broadcast.h" #include "cm_fota.h" #include "cm_fs.h" //#include PrsResult_t PrsResult; typedef int bool; #define true 1 #define false 0 static void __cm_fota_cb(cm_fota_error_e error) { JT808_DEBUG("[FOTA] error code is %d\r\n", error); } // 检查URL是否以http://或https://开头 static bool is_valid_url(const char *url) { if(!url) return false; // 检查基本协议 if(strncmp(url, "http://", 7) == 0) return true; if(strncmp(url, "https://", 8) == 0) return true; return false; } // 消息体解析 static int jt808_BodyParse(void *Prsmsg_body, PrsResult_t *Result){ switch (Result->msg_head.msg_id){ case ID_Plat_GenResp:{// 平台通用应答 Plat_GenResp_t resp_body; //从消息体复制数据 memcpy(&resp_body, Prsmsg_body, sizeof(Plat_GenResp_t)); // 转小端 Result->Rsp_flow_num = Swap16(resp_body.msg_flow_num); // 应答流水号 Result->Rsp_msg_id = Swap16(resp_body.msg_id_ack); // 应答ID Result->Rsp_result = resp_body.result; // 结果 break; } case ID_FillPktReq:{// 补传分包请求 break; } case ID_Term_RegResp:{// 终端注册应答 Result->Rsp_flow_num = (uint16_t)(((uint8_t *)Prsmsg_body)[0] << 8) | (((uint8_t *)Prsmsg_body)[1]); Result->Rsp_result = ((uint8_t *)Prsmsg_body)[2]; if(Result->Rsp_result == Msg_ok){ // 成功时，读取鉴权码 if(Result->term_param_item->big_auth_info.str_auth_code != NULL){ jt808_free(Result->term_param_item->big_auth_info.str_auth_code); Result->term_param_item->big_auth_info.str_auth_code = NULL; } Result->term_param_item->big_auth_info.str_auth_code = (char *)jt808_malloc(Result->msg_head.msgbody_attr.msgbodylen - 3 +1); // 加1是为了加上结束符 if(Result->term_param_item->big_auth_info.str_auth_code == NULL){ JT808_DEBUG("[%s,%s] malloc failed\r\n", __FUNCTION__,__LINE__); return -1; } JT808_DEBUG("auth code =%s\r\n", Result->term_param_item->big_auth_info.str_auth_code); memset(Result->term_param_item->big_auth_info.str_auth_code, 0, Result->msg_head.msgbody_attr.msgbodylen - 3 +1); memcpy(Result->term_param_item->big_auth_info.str_auth_code, Prsmsg_body + 3 , Result->msg_head.msgbody_attr.msgbodylen - 3); // 使用统一接口保存鉴权码到文件 auth_code_manage(AUTH_OP_SET, Result->term_param_item->big_auth_info.str_auth_code, 0); } break; } case ID_SetTermParams:{// 设置终端参数 Result->term_param_item->big_specific_params.param_Total_num = ((uint8_t *)Prsmsg_body)[0]; // 总参数个数 uint8_t *p_Prsmsg_body = (uint8_t *)Prsmsg_body + 1; for(int i = 0; i < Result->term_param_item->big_specific_params.param_Total_num; i++){ // 设置终端参数 jt808_setTermParam(((uint8_t *)(p_Prsmsg_body))[0] << 24 | ((uint8_t *)(p_Prsmsg_body))[1] << 16 | ((uint8_t *)(p_Prsmsg_body))[2] << 8 | ((uint8_t *)(p_Prsmsg_body))[3], // 参数ID (void *)(p_Prsmsg_body + 5), // 参数值 p_Prsmsg_body[4]); // 参数长度 p_Prsmsg_body += 5 + p_Prsmsg_body[4]; // 参数ID(4) + 参数长度(1) + 参数值(n) } Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; Result->Rsp_result = Msg_ok; jt808_pkg_send(ID_Term_GenResp, 0);// 发送终端通用应答 break; } case ID_GetTermParams:{// 查询终端参数 Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_GetTermParamsResp, 0);// 发送终端通用应答 break; } case ID_GetSpecificTermParams:{// 查询指定终端参数 break; } case ID_Term_Ctrl:{// 终端控制 break; } case ID_GetTermAttr:{// 查询终端属性 jt808_pkg_send(ID_GetTermAttrResp, 0);// 发送查询终端属性应答，设置本消息无发送应答 break; } case ID_Term_Upgrade:{// 下发终端升级包 // 确保消息体至少有4字节（升级类型1+CRC2+路径长度1） if (Result->msg_head.msgbody_attr.msgbodylen < 4) { JT808_DEBUG("Upgrade msg too short: %d bytes\n", Result->msg_head.msgbody_attr.msgbodylen); Result->Rsp_result = Msg_invalid; } else { uint8_t *p_body = (uint8_t *)Prsmsg_body; // 解析固定字段 uint8_t upgrade_type = p_body[0]; // 升级类型（1字节） uint16_t file_crc = (p_body[1] << 8) | p_body[2]; // 文件CRC（2字节） uint8_t path_len = p_body[3]; // 路径长度（1字节） // 移动到路径开始位置 p_body += 4; // 验证路径长度是否匹配 if ((path_len + 4) != Result->msg_head.msgbody_attr.msgbodylen) { JT808_DEBUG("Path len mismatch: expected %d, actual %d\n", path_len, Result->msg_head.msgbody_attr.msgbodylen - 4); Result->Rsp_result = Msg_invalid; } else { // 释放旧路径内存（如果有） if (Result->term_param_item->big_upgrade_info.file_path != NULL) { jt808_free(Result->term_param_item->big_upgrade_info.file_path); Result->term_param_item->big_upgrade_info.file_path = NULL; } // 分配新路径内存 Result->term_param_item->big_upgrade_info.file_path = (char *)jt808_malloc(path_len + 1); if (Result->term_param_item->big_upgrade_info.file_path == NULL) { JT808_DEBUG("File path malloc failed (%d bytes)\n", path_len + 1); Result->Rsp_result = Msg_err; } else { // 复制并添加终止符 memcpy(Result->term_param_item->big_upgrade_info.file_path, p_body, path_len); Result->term_param_item->big_upgrade_info.file_path[path_len] = '\0'; // 更新升级信息 Result->term_param_item->big_upgrade_info.upgrade_type = upgrade_type; Result->term_param_item->big_upgrade_info.file_crc = file_crc; Result->term_param_item->big_upgrade_info.path_len = path_len; JT808_DEBUG("Received upgrade cmd: type=%u, crc=0x%04X, path=%s\n", upgrade_type, file_crc, Result->term_param_item->big_upgrade_info.file_path); Result->Rsp_result = Msg_ok; } } } // 设置应答并发送通用应答 Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Term_GenResp, 0); // 启动升级处理流程（同步执行） // start_upgrade_process(&Result->big_upgrade_info); local_tts_text_play("软件升级流程开始，请勿断电",0,0); local_tts_text_play("升级完成后会自动重启",0,0); const char *url = Result->term_param_item->big_upgrade_info.file_path; if(!is_valid_url(url)) { JT808_DEBUG("Invalid URL: %s\n", url); jt808_free(Result->term_param_item->big_upgrade_info.file_path); Result->term_param_item->big_upgrade_info.file_path = NULL; break; // 不继续升级 } int ret = 0; cm_fota_set_ota_plan(CM_FOTA_ASR_PLAN_MINI_INTEGRATE); cm_fota_res_callback_register((cm_fota_result_callback)__cm_fota_cb); ret = cm_fota_set_url(Result->term_param_item->big_upgrade_info.file_path); //设置url路径 if(0 != ret) { JT808_DEBUG("url error\r\n"); } else { JT808_DEBUG("url right\r\n"); cm_fs_system_info_t fs_info = {0, 0}; cm_fs_getinfo(&fs_info); JT808_DEBUG("free size =%u",fs_info.free_size); //文件系统剩余空间为0时不建议执行升级，关键文件系统操作可能会失败 if (0 == fs_info.free_size) { JT808_DEBUG("insufficient space left in the file system\r\n"); break; } #define MIN_FOTA_SPACE (4 * 1024) // 512KB if(fs_info.free_size < MIN_FOTA_SPACE) { JT808_DEBUG("Insufficient space: %u < %u\n", fs_info.free_size, MIN_FOTA_SPACE); break; } cm_fota_info_t info = {0}; cm_fota_read_config(&info); if (CM_FOTA_TYPE_HTTP_HTTPS == info.fixed_info.fota_mode) { JT808_DEBUG("HTTP server [%s]\r\n", info.fixed_info.url); } else { JT808_DEBUG("HTTP server error\r\n"); break; } osDelay(2000/5); cm_fota_exec_upgrade(); } break; } case ID_GetLocInfo:{// 位置信息查询 break; } case ID_LocTrackingCtrl:{// 临时位置跟踪控制 break; } case ID_TxtMsgdelivery:{// 文本信息下发 uint8_t device_volume, speed, volume, mode; uint8_t txt_flag = ((uint8_t *)Prsmsg_body)[0]; JT808_DEBUG("ID_TxtMsgdelivery:%x\r\n", txt_flag); Prsmsg_body = (void *)((uint8_t *)Prsmsg_body + 1); // 跳过标志位 device_volume =10*(((uint8_t *)Prsmsg_body)[0]-'0') + (((uint8_t *)Prsmsg_body)[1]-'0'); speed =10*(((uint8_t *)Prsmsg_body)[3]-'0') + (((uint8_t *)Prsmsg_body)[4]-'0'); volume =10*(((uint8_t *)Prsmsg_body)[6]-'0') + (((uint8_t *)Prsmsg_body)[7]-'0'); mode = ((uint8_t *)Prsmsg_body)[9]-'0'; Result->Rsp_result = Msg_ok; if((((uint8_t *)Prsmsg_body)[2] == ',')&&(((uint8_t *)Prsmsg_body)[5] == ',')&&(((uint8_t *)Prsmsg_body)[8] == ',')&&(((uint8_t *)Prsmsg_body)[10] == ';')){ // 文本信息下发 if(speed > 0 && speed <= 15 && volume > 0 && volume <= 15 && mode >= 0 && mode <= 2){ // 速度、音量、模式有效 local_tts_volume(device_volume); // 设置音量大小 local_tts_set(speed, volume, mode); }else{ JT808_DEBUG("error speed or volume or mode\r\n"); local_tts_volume(100); // 设置音量大小 local_tts_set(6, 7, CM_LOCAL_TTS_DIGIT_AUTO); Result->Rsp_result = Msg_invalid;//消息有误 } }else{ JT808_DEBUG("error speed or volume or mode\r\n"); local_tts_volume(100); // 设置音量大小 local_tts_set(7, 15, CM_LOCAL_TTS_DIGIT_AUTO); Result->Rsp_result = Msg_invalid;//消息有误 } local_tts_text_play((char *)Prsmsg_body + 11, Result->msg_head.msgbody_attr.msgbodylen -11,0); // 开始播放文本信息// 不可打断 Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; // Result->Rsp_result = Msg_ok; jt808_pkg_send(ID_Term_GenResp, 0);// 发送终端通用应答 break; } case ID_Car_Ctrl:{// 车辆控制 if(Result->msg_head.msgbody_attr.msgbodylen == 1){ // 车辆控制 jt808_Set_CarStatus(((uint8_t *)Prsmsg_body)[0]); // 设置车辆状态 Result->Rsp_result = Msg_ok; }else{ Result->Rsp_result = Msg_invalid; } Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Car_CtrlResp, 0);// 发送车辆控制应答，设置本消息无发送应答 break; } case ID_Set_Circle_Area:{// 设置圆形区域(0x8600) // 检查是否在更新流程中 bool in_update = update_manager_is_active() && update_status.state == UPDATE_RECEIVING_DATA; int ret = 0; uint8_t *p = (uint8_t *)Prsmsg_body; // 解析固定字段 uint32_t Area_ID = Swap32(*(uint32_t *)p); uint16_t Area_att = Swap16(*(uint16_t *)(p + 4)); uint32_t center_lat = Swap32(*(uint32_t *)(p + 6)); uint32_t center_lon = Swap32(*(uint32_t *)(p + 10)); uint32_t radius = Swap32(*(uint32_t *)(p + 14)); // 解析景点名称字符串 uint16_t fixed_len = 18; // 前18字节是固定字段 uint16_t name_len = Result->msg_head.msgbody_attr.msgbodylen - fixed_len; char *scenic_name = NULL; if (name_len > 0) { scenic_name = (char *)jt808_malloc(name_len + 1); if (scenic_name) { memcpy(scenic_name, p + fixed_len, name_len); scenic_name[name_len] = '\0'; // 添加字符串终止符 } } // 转换为实际经纬度（除以10^6） double actual_lat = (double)center_lat / 1000000.0; double actual_lon = (double)center_lon / 1000000.0; JT808_DEBUG("actual_lat=%f,actual_lon=%f\r\n",actual_lat,actual_lon); // 调用区域添加函数 attr_broadcast_add_attraction( Area_ID, // 区域ID actual_lon, // 经度 actual_lat, // 纬度 (double)radius, // 半径（米） scenic_name ? scenic_name : "",// 景点名称 "" // 描述（可选） ); // 释放名称内存 if (scenic_name) jt808_free(scenic_name); // 如果在更新流程中，标记数据包接收 if (in_update) { update_manager_packet_received(); JT808_DEBUG("Received attr packet %d/%d\n", update_status.received_packets, update_status.expected_packets); } else { JT808_DEBUG("Direct attr packet received, please check \r\n"); } // 设置响应结果 Result->Rsp_result = (ret == 0) ? Msg_ok : Msg_err; Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; // 发送终端通用应答 jt808_pkg_send(ID_Term_GenResp, 0); JT808_DEBUG("attraction data accepted\r\n"); break; } case ID_Delete_Circle_area:{// 删除圆形区域(0x8601) int ret = 0; uint8_t area_count = *((uint8_t*)Prsmsg_body); // 区域个数(1字节) uint32_t* area_ids = (uint32_t*)((uint8_t*)Prsmsg_body + 1); // 特殊处理：0表示删除所有区域 if (area_count == 0) { attr_broadcast_remove_all(); } // 正常删除指定区域 else { Result->Rsp_result = Msg_ok; //删不删干净都是ok for (int i = 0; i < area_count; i++) { uint32_t area_id = Swap32(area_ids[i]); attr_broadcast_remove_attraction_by_id(area_id); } } // 设置应答信息 Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Term_GenResp, 0); // 发送终端通用应答 break; } case ID_Set_Polygon_area:{// 设置多边形区域 // 检查是否在更新流程中 bool in_update = update_manager_is_active() && update_status.state == UPDATE_RECEIVING_DATA; int ret = 0; uint32_t Area_ID; // 区域ID uint16_t Area_att; // 区域属性 uint16_t Area_Points_Num; // 区域内点的数量 memcpy(&Area_ID, ((uint8_t *)Prsmsg_body), 4); // 区域ID memcpy(&Area_att, ((uint8_t *)Prsmsg_body)+4, 2); // 区域属性 memcpy(&Area_Points_Num, ((uint8_t *)Prsmsg_body)+21, 2); // 区域点个数 if(Swap16(Area_Points_Num) <= 120){ // 区域点个数有效 ret = jt808_add_tail_fence_Polygon_area(Swap32(Area_ID), // 区域ID Swap16(Area_att), // 区域属性 Swap16(Area_Points_Num), // 区域点个数 (AreaPoint_t *)(((uint8_t *)Prsmsg_body) + 23)); // 区域点坐标 if(ret == 0){ Result->Rsp_result = Msg_ok; // 如果在更新流程中，标记数据包接收 if (in_update) { update_manager_packet_received(); JT808_DEBUG("Received fence packet %d/%d\n", update_status.received_packets, update_status.expected_packets); } else { JT808_DEBUG("Direct fence packet received, please check\r\n"); } }else{ Result->Rsp_result = Msg_err; } }else{ Result->Rsp_result = Msg_invalid; } Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Term_GenResp, 0);// 发送终端通用应答 break; } case ID_Delete_Polygon_area:{// 删除多边形区域 int ret = 0; uint8_t Area_ID_Num = ((uint8_t *)Prsmsg_body)[0]; // 区域ID个数 //Prsmsg_body = (void *)((uint8_t *)Prsmsg_body + 1); // 跳过1字节 uint8_t *p_id = (uint8_t *)Prsmsg_body + 1; // 指向第一个ID Result->Rsp_result = Msg_ok; JT808_DEBUG("Area_ID_Num=%d\r\n",Area_ID_Num); // 区域数为0：删除所有区域 if (Area_ID_Num == 0) { if (jt808_remove_fence_Polygon_area(0) != 0) { Result->Rsp_result = Msg_err; } } else { for(int i = 0; i < Area_ID_Num; i++){ uint32_t area_id = (p_id[0] << 24) | (p_id[1] << 16) | (p_id[2] << 8) | p_id[3]; ret = jt808_remove_fence_Polygon_area(area_id); if(ret != 0){ Result->Rsp_result = Msg_err; break; } p_id += 4; } } Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Term_GenResp, 0);// 发送终端通用应答 break; } case ID_Data_Down:{// 数据下行透传 jt808_data_down_SeriaNet(((uint8_t *)Prsmsg_body)[0],((uint8_t *)Prsmsg_body) + 1, Result->msg_head.msgbody_attr.msgbodylen - 1); // 透传数据 Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; Result->Rsp_result = Msg_ok; jt808_pkg_send(ID_Term_GenResp, 0);// 发送终端通用应答 // JT808_DEBUG("ID_Data_Down\r\n"); break; } case ID_data_update_reply:{// 电子围栏/景点数量下发 if (update_manager_is_active()) { // 检查消息体长度至少为5字节 (2+1+2) if (Result->msg_head.msgbody_attr.msgbodylen < 5) { JT808_DEBUG("Invalid update reply length: %d\n", Result->msg_head.msgbody_attr.msgbodylen); Result->Rsp_result = Msg_invalid; update_manager_fail(); } else { uint8_t *p_body = (uint8_t *)Prsmsg_body; // 手动组合应答流水号（2字节大端） uint16_t reply_flow_num = (p_body[0] << 8) | p_body[1]; Result->Rsp_flow_num = reply_flow_num; // 解析类型 (1字节) uint8_t update_type = p_body[2]; // 手动组合围栏/景点数量（2字节大端） uint16_t packet_count = (p_body[3] << 8) | p_body[4]; JT808_DEBUG("Update reply: type=%d, count=%d\n", update_type, packet_count); // 验证类型是否匹配当前更新 if ((update_type == 1 && update_status.type == UPDATE_TYPE_FENCE) || (update_type == 2 && update_status.type == UPDATE_TYPE_ATTR)) { if (packet_count == 0) { // 无数据需要更新 update_manager_complete(); JT808_DEBUG("No data to update\n"); Result->Rsp_result = Msg_ok; } else { // 开始接收数据 update_manager_begin_receiving(packet_count); JT808_DEBUG("Expecting %d data packets\n", packet_count); Result->Rsp_result = Msg_ok; } } else { // 类型不匹配 JT808_DEBUG("Type mismatch: msg_type=%d, current_type=%d\n",update_type, update_status.type); Result->Rsp_result = Msg_invalid; update_manager_fail(); } } } else { Result->Rsp_result = Msg_err; // 更新管理器未激活 JT808_DEBUG("Received update reply without active update\n"); } // 设置应答 Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Term_GenResp, 0); break; } case ID_data_update_complete:{// 电子围栏/景点更新完成 if (update_manager_is_complete()) { // 检查消息体长度至少为5字节 (1字节类型+4字节版本号) if (Result->msg_head.msgbody_attr.msgbodylen < 5) { JT808_DEBUG("Invalid update complete length: %d\n", Result->msg_head.msgbody_attr.msgbodylen); Result->Rsp_result = Msg_invalid; update_manager_fail(); } else { uint8_t *p_body = (uint8_t *)Prsmsg_body; // 解析类型 (1字节) uint8_t update_type = p_body[0]; // 解析版本号 (4字节大端) - 使用Swap32转换 uint32_t new_version = Swap32(*(uint32_t*)(p_body+1)); JT808_DEBUG("Update complete: type=%d, version=%u\n", update_type, new_version); // 验证类型是否匹配当前更新 if ((update_type == 1 && update_status.type == UPDATE_TYPE_FENCE) || (update_type == 2 && update_status.type == UPDATE_TYPE_ATTR)) { // 更新本地版本号 attr_broadcast_manage_version( VERSION_OP_SET, (update_type == 1) ? VERSION_TYPE_FENCE : VERSION_TYPE_ATTRACTION, &new_version ); update_manager_complete(); Result->Rsp_result = Msg_ok; } else { JT808_DEBUG("Type mismatch: msg_type=%d, current_type=%d\n", update_type, update_status.type); Result->Rsp_result = Msg_invalid; update_manager_fail(); } } } else { Result->Rsp_result = Msg_err; // 更新管理器未激活 JT808_DEBUG("Received update complete without active update\n"); } // 设置应答 Result->Rsp_flow_num = Result->msg_head.msg_flow_num; Result->Rsp_msg_id = Result->msg_head.msg_id; jt808_pkg_send(ID_Term_GenResp, 0); break; } default:{ return -2; // 没有对应的消息体解析函数 break; } } return 0; } // jt808协议包处理 int jt808_msg_parse(const uint8_t *BufferReceive, uint16_t length, PrsResult_t *Result){ uint8_t *raw_Buffer = (uint8_t *)jt808_malloc(length * sizeof(uint8_t)); if(raw_Buffer == NULL){ JT808_DEBUG("[%s,%s] malloc failed \r\n", __FUNCTION__,__LINE__); return -1; } memcpy(raw_Buffer, BufferReceive, length); // // 打印原始数据 // app_printf("raw_Buffer: %d\r\n", length); // for(int i = 0; i < length; i++){ // app_printf("%02x ", raw_Buffer[i]); // } // app_printf("\r\n"); // 计算需要逆转义字符的个数 uint16_t para_length = 0; for(int i = 1; i < (length - 2); i++){ if(((raw_Buffer[i] == PESC)&&(raw_Buffer[i+1] == PESC_SIGN)) || // 7d 02 转义7e ((raw_Buffer[i] == PESC)&&(raw_Buffer[i+1] == PESC_ESCAPE))){ // 7d 01 转义7d para_length++; } } para_length =length - para_length; uint8_t *para_Buffer = (uint8_t *)jt808_malloc(para_length * sizeof(uint8_t)); if(para_Buffer == NULL){ JT808_DEBUG("[%s,%s] malloc failed \r\n", __FUNCTION__,__LINE__); jt808_free(raw_Buffer); return -1; } para_Buffer[0] = PSIGN; para_Buffer[para_length - 1] = PSIGN; // 逆转义 uint16_t offset_num = 0; for(int i = 1; i < (para_length - 1); i++){ if(((raw_Buffer[i + offset_num] == PESC)&&(raw_Buffer[i + offset_num + 1] == PESC_SIGN))){ // 7d 02 转义7e para_Buffer[i] = PSIGN; offset_num++; }else if(((raw_Buffer[i + offset_num] == PESC)&&(raw_Buffer[i + offset_num + 1] == PESC_ESCAPE))){ // 7d 01 转义7d para_Buffer[i] = PESC; offset_num++; }else{ para_Buffer[i] =raw_Buffer[i + offset_num]; } } // 释放内存 jt808_free(raw_Buffer); if(offset_num != length - para_length){ // 转义后长度有误 JT808_DEBUG("error offset_num != length - para_length\r\n"); jt808_free(para_Buffer); return -1; } // // 打印逆转义后数据 // app_printf("para_Buffer: %d\r\n", para_length); // for(int i = 0; i < para_length; i++){ // app_printf("%02x ", para_Buffer[i]); // } // app_printf("\r\n"); // 异或校验 if(para_Buffer[para_length - 2] != BCC_Check(para_Buffer + 1, para_length - 2 - 1)){ JT808_DEBUG("BCC_CheckSum ERROR: %x %x\r\n",para_Buffer[para_length - 2] ,BCC_Check(para_Buffer + 1, para_length - 2 - 1)); jt808_free(para_Buffer); return -1; } // 解析消息头 memcpy(&Result->msg_head, para_Buffer + 1, sizeof(MsgHead_t) - ((para_Buffer[3] & 0x02)==0? 4 : 0)); Result->msg_head.msg_id = Swap16(Result->msg_head.msg_id);// 消息ID Result->msg_head.msgbody_attr.val16 = Swap16(Result->msg_head.msgbody_attr.val16);// 消息体属性 Result->msg_head.msg_flow_num = Swap16(Result->msg_head.msg_flow_num);// 消息流水号 Result->msg_head.total_packet = Swap16(Result->msg_head.total_packet);// 总包数, 分包情况下使用 Result->msg_head.packet_seq = Swap16(Result->msg_head.packet_seq);// 当前包序号, 分包情况下使用 JT808_DEBUG("RECV Msg_ID:0x%04X len:%d\r\n", Result->msg_head.msg_id ,para_length); for(uint16_t i = 0; i < para_length; i++){ JT808_DEBUG_DATA("%02X ", *(para_Buffer + i)); } JT808_DEBUG_DATA("\n"); // 消息体解析 if(0 != jt808_BodyParse((void *)(para_Buffer + 1 + sizeof(MsgHead_t) - ((para_Buffer[3] & 0x02)==0? 4 : 0)) ,Result)){ JT808_DEBUG("error jt808_BodyParse\r\n"); // 释放内存 jt808_free(para_Buffer); return -1; } // 释放内存 jt808_free(para_Buffer); return 0; }