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feat: Add mDNS, watchdog, human-readable uptime, esp-fleet tool

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Firmware:
- mDNS announcement as <hostname>.local (configurable via Kconfig)
- Task watchdog with 30s timeout and auto-reboot on hang
- STATUS now returns human-readable uptime (e.g., 3d2h15m) and hostname

Pi-side tools:
- esp-cmd: mDNS hostname resolution (esp-cmd amber-maple.local STATUS)
- esp-fleet: parallel command to all sensors (esp-fleet status)

Tested on amber-maple — mDNS resolves, watchdog active, fleet tool works.
This commit is contained in:
user
2026-02-04 15:59:18 +01:00
parent 6c4c17d740
commit 44bd549761
7 changed files with 163 additions and 25 deletions
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36
get-started/csi_recv_router/main/app_main.c
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@@ -29,7 +29,9 @@
#include "esp_netif.h"
#include "esp_now.h"
#include "esp_timer.h"
#include "esp_task_wdt.h"
#include "driver/gpio.h"
#include "mdns.h"
#include "lwip/inet.h"
#include "lwip/netdb.h"
@@ -400,7 +402,10 @@ static int cmd_handle(const char *cmd, char *reply, size_t reply_size)
/* STATUS */
if (strncmp(cmd, "STATUS", 6) == 0) {
int64_t uptime_s = esp_timer_get_time() / 1000000LL;
int64_t up = esp_timer_get_time() / 1000000LL;
int days = (int)(up / 86400);
int hours = (int)((up % 86400) / 3600);
int mins = (int)((up % 3600) / 60);
uint32_t heap = esp_get_free_heap_size();
wifi_ap_record_t ap;
@@ -409,9 +414,19 @@ static int cmd_handle(const char *cmd, char *reply, size_t reply_size)
rssi = ap.rssi;
}
char uptime_str[32];
if (days > 0) {
snprintf(uptime_str, sizeof(uptime_str), "%dd%dh%dm", days, hours, mins);
} else if (hours > 0) {
snprintf(uptime_str, sizeof(uptime_str), "%dh%dm", hours, mins);
} else {
snprintf(uptime_str, sizeof(uptime_str), "%dm", mins);
}
snprintf(reply, reply_size,
"OK STATUS uptime=%lld heap=%lu rssi=%d tx_power=%d rate=%d",
uptime_s, (unsigned long)heap, rssi, (int)s_tx_power_dbm, s_send_frequency);
"OK STATUS uptime=%s heap=%lu rssi=%d tx_power=%d rate=%d hostname=%s",
uptime_str, (unsigned long)heap, rssi, (int)s_tx_power_dbm,
s_send_frequency, CONFIG_CSI_HOSTNAME);
return strlen(reply);
}
@@ -526,6 +541,21 @@ void app_main()
esp_wifi_set_max_tx_power(s_tx_power_dbm * 4);
ESP_LOGI(TAG, "TX power set to %d dBm", (int)s_tx_power_dbm);
/* mDNS: announce as <hostname>.local */
ESP_ERROR_CHECK(mdns_init());
mdns_hostname_set(CONFIG_CSI_HOSTNAME);
mdns_instance_name_set("ESP32 CSI Sensor");
ESP_LOGI(TAG, "mDNS hostname: %s.local", CONFIG_CSI_HOSTNAME);
/* Watchdog: 30s timeout, auto-reboot on hang */
esp_task_wdt_config_t wdt_cfg = {
.timeout_ms = 30000,
.idle_core_mask = (1 << 0) | (1 << 1),
.trigger_panic = true,
};
ESP_ERROR_CHECK(esp_task_wdt_reconfigure(&wdt_cfg));
ESP_LOGI(TAG, "Watchdog configured: 30s timeout");
s_led_mode = LED_SLOW_BLINK;
udp_socket_init();