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feat(mqtt): 设备时钟同步方案B — 平台经 report_config 下发 Unix ts (协议V1.05)

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设备无RTC/SNTP, 原上行 ts=mstick()/1000(上电秒数)。方案B:
- net_srv.c 新增 dev_time_sync()/dev_time_now(): 门槛≥1600000000挡上电秒数,
  已校准返回真Unix, 未校准退回上电秒数; 无符号相减处理mstick 49.7天回绕
- manage_mqtt_recv_message 从下行命令信封 ts 校准 (report_config主同步点)
- 全部上行 ts (14处命令响应+initialize+loop_data+event_report) 改 dev_time_now()
  heartbeat uptime 字段保留 mstick()/1000 (运行时长非时间戳)
- 协议 V1.05 §2.3 时间同步 + report_config 兼任同步点职责
- tests/test_dev_time_sync.c 6组全过

平台侧配合: 收到 initialize 后下发 report_config 时 ts 填当前 Unix 时间
This commit is contained in:
wangfq
2026-07-15 15:25:44 +08:00
parent e3eaa111fe
commit 3e28174b40
6 changed files with 167 additions and 22 deletions
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vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/net_srv.c
+51 -15
View File
@@ -82,6 +82,32 @@ void clear_mqtt_buf(void)
memset(mqttBuf, 0, MAX_MQTTBUF_LEN);
}
/*===========================================================================
* 设备时钟同步 (方案B, 2026-07-15)
* 设备无 RTC/SNTP。上电后本地时间 = 上电秒数。平台在收到 initialize 上线后,
* 下发 report_config 命令时于 ts 字段填当前 Unix 时间; 设备据此校准。
* 校准后所有上行 ts = 真 Unix 时间; 未校准前退回上电秒数(平台可按量级识别)。
* 接受任意下行命令的合法 ts 校准 (report_config 为约定主同步点)。
*===========================================================================*/
static uint32_t _dev_time_base_unix = 0; // 同步基准 Unix 秒, 0=未同步
static uint32_t _dev_time_base_tick = 0; // 同步时刻的 mstick()
void dev_time_sync(uint32_t unix_ts)
{
if (unix_ts < 1600000000UL) return; // 合法性门槛(>2020-09), 挡掉上电秒数/0/异常
_dev_time_base_unix = unix_ts;
_dev_time_base_tick = mstick();
PRINT("TIME: synced unix=%lu\n", (unsigned long)unix_ts);
}
uint32_t dev_time_now(void)
{
if (_dev_time_base_unix == 0) // 未同步 → 退回上电秒数(兼容)
return (uint32_t)(mstick() / 1000);
/* mstick 无符号相减天然处理 49.7 天回绕 */
return _dev_time_base_unix + (uint32_t)((mstick() - _dev_time_base_tick) / 1000);
}
/*********************************************************************
* @fn mStopIfError
*
@@ -196,7 +222,8 @@ void dev_initialize_pub(void)
// V1.03: 上线后发布 initialize，告知服务器设备信息
// 格式: {msg_id, cmd:"initialize", ts, data:{dev_serial, model, hard_ver, soft_ver, extra_info:{code,csq,location}}}
uint32_t now = (mstick() > 0) ? (uint32_t)(mstick() / 1000) : 0;
// 首次上电尚未时钟同步 → ts=上电秒数; 平台收到本消息后经 report_config 回填真 Unix 时间
uint32_t now = dev_time_now();
char topic[64];
snprintf(topic, sizeof(topic), "dld960/%s/dev", g_dev_number_str);
sprintf((char *)mBuff,
@@ -1116,6 +1143,15 @@ void manage_mqtt_recv_message(char * msg, int length)
uint32_t msg_id = 0;
simple_parse_json(msg, "\"msg_id\"", tmp);
if(strlen(tmp) > 0) msg_id = (uint32_t)strtoul(tmp, NULL, 10);
// 方案B: 由下行命令 ts 校准本地时钟。平台在 initialize 上线后经 report_config
// 下发真 Unix 时间; dev_time_sync 内部有合法性门槛, 非法/上电秒数会被忽略。
// report_config 为约定主同步点, 此处对任意携带合法 ts 的下行命令均校准。
{
char ts_str[16] = {0};
simple_parse_json(msg, "\"ts\"", ts_str);
if(strlen(ts_str) > 0) dev_time_sync((uint32_t)strtoul(ts_str, NULL, 10));
}
// 去掉 temp_guide 里的引号
char *cmd_str = temp_guide;
@@ -1137,7 +1173,7 @@ void manage_mqtt_recv_message(char * msg, int length)
"\"model\":\"%s\",\"product_code\":\"960001\","
"\"sub_code\":{\"net\":%s,\"iot\":%s},"
"\"bus\":{\"bus1\":0,\"bus2\":0,\"bus3\":0,\"bus4\":0}}}",
msg_id, mstick() / 1000,
msg_id, dev_time_now(),
g_dev_number_str, HARDWARE_VER, FIRMWARE_VER, PRODUCT_MODEL,
g_sub_code_enable.net_enable ? "true" : "false",
g_sub_code_enable.iot_enable ? "true" : "false");
@@ -1170,7 +1206,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"pwd_verify\","
"\"ts\":%lu,\"code\":0,\"msg\":\"success\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
PRINT("IOT: pwd_verify OK\n");
} else {
@@ -1178,7 +1214,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"pwd_verify\","
"\"ts\":%lu,\"code\":2,\"msg\":\"password incorrect\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
}
return;
@@ -1191,7 +1227,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"dev_serial_set\","
"\"ts\":%lu,\"code\":4,\"msg\":\"not implemented yet\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
return;
}
@@ -1209,7 +1245,7 @@ void manage_mqtt_recv_message(char * msg, int length)
"\"lssc_ip\":\"%d.%d.%d.%d\","
"\"dns\":\"%d.%d.%d.%d\","
"\"port\":%d}}",
msg_id, mstick() / 1000,
msg_id, dev_time_now(),
local_net_cfg.lip[0], local_net_cfg.lip[1], local_net_cfg.lip[2], local_net_cfg.lip[3],
local_net_cfg.sub[0], local_net_cfg.sub[1], local_net_cfg.sub[2], local_net_cfg.sub[3],
local_net_cfg.gw[0], local_net_cfg.gw[1], local_net_cfg.gw[2], local_net_cfg.gw[3],
@@ -1285,7 +1321,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"ssc_net_set\","
"\"ts\":%lu,\"code\":0,\"msg\":\"success\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
PRINT("IOT: ssc_net_set done\n");
return;
@@ -1300,7 +1336,7 @@ void manage_mqtt_recv_message(char * msg, int length)
"\"data\":{"
"\"host\":\"%s\",\"port\":%d,"
"\"client_id\":\"%s\",\"username\":\"%s\",\"password\":\"%s\"}}",
msg_id, mstick() / 1000,
msg_id, dev_time_now(),
iot_net_info.remote_addr, iot_net_info.mqtt_port,
iot_net_info.client_id, iot_net_info.username, iot_net_info.password);
mqtt_publish(resp_topic, resp, 1);
@@ -1363,7 +1399,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"iot_net_set\","
"\"ts\":%lu,\"code\":0,\"msg\":\"success\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
PRINT("IOT: iot_net_set done\n");
return;
@@ -1378,7 +1414,7 @@ void manage_mqtt_recv_message(char * msg, int length)
"\"data\":{"
"\"client_id_enable\":%s,"
"\"topic_pub\":\"%s\",\"topic_sub\":\"%s\"}}",
msg_id, mstick() / 1000,
msg_id, dev_time_now(),
g_iot_topic.clientid_enable ? "true" : "false",
g_iot_topic.topic_pub, g_iot_topic.topic_sub);
mqtt_publish(resp_topic, resp, 1);
@@ -1425,7 +1461,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"iot_topic_set\","
"\"ts\":%lu,\"code\":0,\"msg\":\"success\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
PRINT("IOT: iot_topic_set done\n");
return;
@@ -1437,7 +1473,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"pwd_set\","
"\"ts\":%lu,\"code\":4,\"msg\":\"not implemented yet\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
return;
}
@@ -1448,7 +1484,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"factory_reset\","
"\"ts\":%lu,\"code\":0,\"msg\":\"success\"}",
msg_id, mstick() / 1000);
msg_id, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
PRINT("IOT: factory_reset — resetting...\n");
Delay_Ms(200);
@@ -1516,7 +1552,7 @@ void manage_mqtt_recv_message(char * msg, int length)
"\"data\":{"
"\"sensor_type\":%d,\"enable\":%s,\"once\":%s,\"env_eval\":%s,"
"\"interval\":%u,\"ack_required\":%s,\"timeout\":%u}}",
msg_id, mstick() / 1000,
msg_id, dev_time_now(),
g_report_cfg.sensor_type,
g_report_cfg.enable ? "true" : "false",
g_report_cfg.once ? "true" : "false",
@@ -1546,7 +1582,7 @@ void manage_mqtt_recv_message(char * msg, int length)
snprintf(resp, sizeof(resp),
"{\"msg_id\":%lu,\"cmd\":\"%s\","
"\"ts\":%lu,\"code\":4,\"msg\":\"unsupported command\"}",
msg_id, cmd_str, mstick() / 1000);
msg_id, cmd_str, dev_time_now());
mqtt_publish(resp_topic, resp, 1);
PRINT("IOT: unsupported cmd=%s\n", cmd_str);
}