From c99f619fe5ad937fabdbc4b536e3db6869ee7d38 Mon Sep 17 00:00:00 2001
From: Travis Shears <t@travisshears.com>
Date: Sat, 13 Sep 2025 21:32:15 +0200
Subject: [PATCH] add 24hr restart proc

---
 node1.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/node1.c b/node1.c
index 136a807..603778d 100644
--- a/node1.c
+++ b/node1.c
@@ -11,6 +11,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
+#include <hardware/watchdog.h>
 
 // 5 sec loop is for testing
 // #define LOOP_INTERVAL_MS 5000
@@ -48,6 +49,14 @@ void comms_led_update() {
     }
 }
 
+// Callback to reset the Pico after 24 hours
+static bool cb_24h(__unused struct repeating_timer *t) {
+    printf("Restarting Pico after 24 hours...\n");
+    watchdog_enable(1, 1); // 1 ms timeout, reset on next loop
+    while (1) { tight_loop_contents(); } // Wait for reset
+    return false; // Not reached
+}
+
 static mqtt_client_config mqtt_config;
 
 static pms5003_config pms_config;
@@ -142,6 +151,8 @@ int main() {
 
   struct repeating_timer timer_30;
   add_repeating_timer_ms(LOOP_INTERVAL_MS, cb_30, NULL, &timer_30);
+  struct repeating_timer timer_24h;
+  add_repeating_timer_ms(86400000, cb_24h, NULL, &timer_24h);
   while (true) {
     comms_led_update();
     sleep_us(100);