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feat(vd960DBN): TCP/MQTT log_* 命令支持快照流 stream=snapshot (2026-08-18)

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- snapshot.c/h: 新增 snap_rec_to_json() — SnapRec 64B → JSON (channels 对齐 0xC0, variation 3B 符号扩展, misc_type 全枚举)
- tcp_json_srv.c: handle_log_stat/query/clear 加 stream 解析 + snapshot 分支
- iot_mqtt_srv.c: log_stat/query/clear 加 stream 解析 + snapshot 分支
- 事件流 count=0 按上限处理 (与 BLE 对齐); 快照 QUERY count≤2, CLEAR ~45ms
- 新增 gcc 隔离单测 tests/test_snap_to_json.c 34 断言全过
- devlog V4.1
This commit is contained in:
wangfq
2026-08-18 09:01:22 +08:00
parent e437dce556
commit f1c9358aad
6 changed files with 444 additions and 65 deletions
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vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/snapshot.c
+59
View File
@@ -16,6 +16,7 @@
#include "storage.h"
#include "cmcng.h"
#include <string.h>
#include <stdio.h>
/* 编译期断言: 记录必须是 64B (定长环形索引依赖) */
typedef char snap_rec_size_must_be_64[(sizeof(SnapRec) == 64) ? 1 : -1];
@@ -421,3 +422,61 @@ void snap_clear(void)
}
snap_flush_head();
}
/* SnapRec -> JSON object (channels aligned with 0xC0 wire format).
Used by TCP JSON / MQTT log_query stream=snapshot (protocol V1.03/V1.07).
Returns snprintf written length; caller must ensure buf_len enough. */
int snap_rec_to_json(const SnapRec *r, char *buf, int buf_len)
{
int coil_count = (r->len > (SNAP_COILS_MAX * SNAP_COIL_BYTES))
? SNAP_COILS_MAX : (r->len / SNAP_COIL_BYTES);
if (coil_count < 0) coil_count = 0;
int pos = snprintf(buf, buf_len,
"{\"seq\":%lu,\"boot_seq\":%u,\"ts_ms\":%lu,\"coil_count\":%u,\"channels\":[",
(unsigned long)r->seq, (unsigned)r->boot_seq,
(unsigned long)r->ts_ms, (unsigned)coil_count);
int c;
for (c = 0; c < coil_count; c++) {
const uint8_t *p = &r->coils[c * SNAP_COIL_BYTES];
uint8_t cfg = p[0];
uint8_t cond = p[1];
uint32_t freq = (uint32_t)p[2] | ((uint32_t)p[3] << 8) | ((uint32_t)p[4] << 16);
int32_t variation = (int32_t)((uint32_t)p[5] | ((uint32_t)p[6] << 8) | ((uint32_t)p[7] << 16));
uint32_t misc = (uint32_t)p[8] | ((uint32_t)p[9] << 8)
| ((uint32_t)p[10] << 16) | ((uint32_t)p[11] << 24);
uint8_t freq_level = (cfg >> 6) & 0x03;
uint8_t direction = (cfg >> 5) & 0x01;
uint8_t freq_type = (cfg >> 4) & 0x01;
uint8_t sensitivity = cfg & 0x0F;
uint8_t condition = (cond >> 4) & 0x0F;
uint8_t loop_state = (cond >> 3) & 0x01; /* 0=normal 1=cut */
uint8_t car_state = (cond >> 2) & 0x01; /* 0=nocar 1=car */
uint8_t misc_type = cond & 0x03;
const char *fl = "high";
const char *mt = "time";
if (variation & 0x800000) variation |= (int32_t)0xFF000000; /* 3B sign extend */
if (freq_level == 1) fl = "mid_high";
else if (freq_level == 2) fl = "mid_low";
else if (freq_level == 3) fl = "low";
if (misc_type == 1) mt = "cut_count";
else if (misc_type == 2) mt = "flow_count";
else if (misc_type == 3) mt = "relay_count";
if (c > 0) pos += snprintf(buf + pos, buf_len - pos, ",");
pos += snprintf(buf + pos, buf_len - pos,
"{\"ch\":%u,\"freq_level\":\"%s\",\"direction\":%u,\"freq_type\":%u,"
"\"sensitivity\":%u,\"condition\":%u,\"loop_ok\":%s,\"has_car\":%s,"
"\"misc_type\":\"%s\",\"freq\":%lu,\"variation\":%ld,\"misc\":%lu}",
(unsigned)(c + 1), fl, (unsigned)direction, (unsigned)freq_type,
(unsigned)sensitivity, (unsigned)condition,
loop_state ? "false" : "true", car_state ? "true" : "false",
mt, (unsigned long)freq, (long)variation, (unsigned long)misc);
}
pos += snprintf(buf + pos, buf_len - pos, "]}");
return pos;
}