==================================== ble airsync ==================================== 功能简介 ========== airsync用于和微信airsync调试工具AirSync Debugger通信。 AirSync Debugger和ble设备交互流程 ====================================== .. image:: img/airsync_steps.png airsync是按照以上6个步骤实现的。 认证方式 ========== .. code:: c //#define EAM_MD5_NO_ENRYPT 1 //auth method //#define EAM_MD5_ENRYPT 1 #define EAM_MAC_NO_ENCRYPT 2 认证方式为以上三种中的任意一种，当EAM_MD5_NO_ENRYPT和EAM_MD5_ENRYPT时，要在AirSync Debugger设置相应的DEVICE_ID,DEVICE_TYPE,DEVICE_KEY与代码一致。 广播出协议指定的数据 ======================= .. code:: c static void osapp_start_advertising() { adv_manuf_data_t manuf_dat = { .manuf_id = COMPANY_IDENTIFIER, }; memcpy(manuf_dat.local_addr, local_addr.addr.addr.addr, 6); uint8_t adv_svc_uuid[2] = WECHAT_SERVICE_ARRAY; struct gapm_start_advertise_cmd *cmd = AHI_MSG_ALLOC(GAPM_START_ADVERTISE_CMD,TASK_ID_GAPM, gapm_start_advertise_cmd); cmd->op.addr_src = GAPM_STATIC_ADDR; cmd->channel_map = APP_ADV_CHMAP; cmd->intv_min = APP_ADV_INT; cmd->intv_max = APP_ADV_INT; cmd->op.code = GAPM_ADV_UNDIRECT; cmd->info.host.mode = GAP_GEN_DISCOVERABLE; // Flag value is set by the GAP cmd->info.host.adv_data_len = ADV_DATA_PACK(cmd->info.host.adv_data,3, \ GAP_AD_TYPE_COMPLETE_NAME,WECHAT_SVC_ADV_NAME,sizeof(WECHAT_SVC_ADV_NAME), \ GAP_AD_TYPE_MORE_16_BIT_UUID, adv_svc_uuid, ATT_UUID_16_LEN, \ GAP_AD_TYPE_MANU_SPECIFIC_DATA, (uint8_t*)&manuf_dat, sizeof(adv_manuf_data_t)); cmd->info.host.scan_rsp_data_len = 0; os_ahi_msg_send(cmd,portMAX_DELAY); } 协议规定要广播出指定服务和company id，local addr。 添加协议规定的服务 ==================== .. code:: c struct gattm_svc_desc const wechat_svc_desc ={ .start_hdl = 0, .task_id = TASK_ID_AHI, .perm = PERM(SVC_MI,DISABLE)|PERM(SVC_EKS,DISABLE)|\ PERM(SVC_AUTH,NO_AUTH)|PERM(SVC_UUID_LEN,UUID_16),PERM_VAL(SVC_SECONDARY,0), .nb_att = WECHAT_SVC_ATT_NUM, .uuid = WECHAT_SERVICE_ARRAY, }; struct gattm_att_desc const wechat_svc_att_db[WECHAT_SVC_ATT_NUM] = { [WECHAT_SVC_IDX_IND_CHAR] = { .uuid = ATT_DECL_CHAR_ARRAY, .perm = PERM(RD,ENABLE), .max_len = 0, .ext_perm= PERM(UUID_LEN,UUID_16), }, [WECHAT_SVC_IDX_IND_VAL] = { .uuid = WECHAT_INDICATE_CHARACTERISTICS_ARRAY, .perm = PERM(IND,ENABLE), .max_len = BLE_WECHAT_MAX_DATA_LEN, .ext_perm = PERM(UUID_LEN,UUID_16)|PERM(RI,ENABLE), }, [WECHAT_SVC_IDX_IND_CFG] = { .uuid = ATT_DESC_CLIENT_CHAR_CFG_ARRAY, .perm = PERM(RD,ENABLE)|PERM(WRITE_REQ,ENABLE), .max_len = 0, .ext_perm = PERM(UUID_LEN,UUID_16), }, [WECHAT_SVC_IDX_WT_CHAR] = { .uuid = ATT_DECL_CHAR_ARRAY, .perm = PERM(RD,ENABLE), .max_len = 0, .ext_perm= PERM(UUID_LEN,UUID_16), }, [WECHAT_SVC_IDX_WT_VAL] = { .uuid = WECHAT_WRITE_CHARACTERISTICS_ARRAY, .perm = PERM(WRITE_REQ,ENABLE)|PERM(WRITE_COMMAND,ENABLE)|PERM(WP,NO_AUTH), .max_len = BLE_WECHAT_MAX_DATA_LEN, .ext_perm = PERM(UUID_LEN,UUID_16)|PERM(RI,ENABLE), }, [WECHAT_SVC_IDX_RD_CHAR] = { .uuid = ATT_DECL_CHAR_ARRAY, .perm = PERM(RD,ENABLE), .max_len = 0, .ext_perm= PERM(UUID_LEN,UUID_16), }, [WECHAT_SVC_IDX_RD_VAL] = { .uuid = WECHAT_READ_CHARACTERISTICS_ARRAY, .perm = PERM(RD,ENABLE)|PERM(RP,NO_AUTH), .max_len = BLE_WECHAT_MAX_DATA_LEN, .ext_perm = PERM(UUID_LEN,UUID_16)|PERM(RI,ENABLE), }, }; airsync将该服务添加到自己的profile中，该服务是协议要求添加的。 用户API介绍 ============ .. code:: c void send_auth_cmd_pack(void) { uint8_t* data_pack; uint32_t len_pack; cmd_info_t cmd_type = { .cmd = CMD_AUTH, }; cmd_proces_2_stream(&cmd_type, &data_pack, &len_pack); osapp_send_indication_wrap(data_pack, len_pack); vPortFree(data_pack); } void send_init_cmd_pack(void) { uint8_t* data_pack; uint32_t len_pack; cmd_info_t cmd_type = { .cmd = CMD_INIT, }; cmd_proces_2_stream(&cmd_type, &data_pack, &len_pack); osapp_send_indication_wrap(data_pack, len_pack); vPortFree(data_pack); } void send_dat_cmd_pack(const char* dat) { uint8_t* data_pack; uint32_t len_pack; cmd_info_t cmd_type = { .cmd = CMD_SENDDAT, .send_msg = { .len = strlen(dat)+1, .str = dat, }, }; cmd_proces_2_stream(&cmd_type, &data_pack, &len_pack); osapp_send_indication_wrap(data_pack, len_pack); vPortFree(data_pack); } int parse_recev_pkt(uint8_t *data_raw, uint32_t len_raw) { bp_fix_head_t *fix_head = (bp_fix_head_t *)data_raw; LOG_I("CMDID: %d", co_htons(fix_head->n_cmd_id)); int ret = 0; switch(co_htons(fix_head->n_cmd_id)) { case ECI_resp_auth: parse_resp_auth_ptk(data_raw, len_raw); break; case ECI_resp_init: parse_resp_init_ptk(data_raw, len_raw); break; case ECI_resp_sendData: parse_resp_send_dat_ptk(data_raw, len_raw); break; case ECI_push_recvData: ret = parse_push_recev_dat_ptk(data_raw, len_raw); break; case ECI_push_switchView: ret = parse_push_switch_view_ptk(data_raw, len_raw); break; case ECI_push_switchBackgroud: ret = parse_push_switch_backgnd_ptk(data_raw, len_raw); break; default: LOG_I("no response type"); break; } vPortFree(data_raw);// free recev pack return ret; } send_auth_cmd_pack()实现了上图中的Step3，ble设备发送auth包。send_init_cmd_pack()实现了上图中的Step4，ble设备发送init包。send_dat_cmd_pack()实现了上图中的Step5，ble设备发送data包。parse_recev_pkt()用来解析AirSync Debugger发过来的所有包。