From b0e9dfea36657138c2f2c7fe8d3a2b880c750832 Mon Sep 17 00:00:00 2001
From: leca <leca@foxarmy.org>
Date: Thu, 10 Apr 2025 22:22:57 +0300
Subject: [PATCH] using open-drain for power on signal, added option for sleep
 time.

---
 README.md   |  3 ++-
 src/src.ino | 18 ++++++++++--------
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 5241e70..28dc37b 100644
--- a/README.md
+++ b/README.md
@@ -13,9 +13,10 @@ cp src/secrets.h.template src/secrets.h
 nano src/secrets.h
 ```
 If you wish to change GPIO pins, please, do it in ``src/src.info``
+
 Flash the sketch in your board
 
 2. Connect pin STATUS_PIN to anything in your server that has voltage when the server is running (usually some led on the forward panel)
 3. Connect pin WAKE_PIN to power pin on your motherboard
 4. Connect GND to motherboard's ground. 
-5. Make sure that the board has some power supply (usually you want to use 18650 Li-ion batteries) to be online when the power is down.
\ No newline at end of file
+5. Make sure that the board has some power supply (usually you want to use 18650 Li-ion batteries) to be online when the power is down.
diff --git a/src/src.ino b/src/src.ino
index f2d2825..49dd4ef 100644
--- a/src/src.ino
+++ b/src/src.ino
@@ -10,13 +10,13 @@
 
 #define STATUS_PIN D5
 #define WAKE_PIN D6
+#define SLEEP_TIME 5 // seconds
 
 static bool wifi_lost = false;
 static bool server_is_off = false;
 
 void setup() {
   Serial.begin(9600);
-
   
   WiFi.mode(WIFI_STA);
   WiFi.disconnect();
@@ -24,16 +24,16 @@ void setup() {
   Serial.println("Connecting to a Wi-Fi network");
   
   WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
-  while (WiFi.status() == WL_IDLE_STATUS) delay(100);
+  while (WiFi.status() == WL_IDLE_STATUS) delay(1000);
 
   Serial.println("Wi-Fi connected");
 
   pinMode(STATUS_PIN, INPUT);
-  pinMode(WAKE_PIN, OUTPUT);
+  pinMode(WAKE_PIN, INPUT);
 }
 
 void loop() {
-  wifi_lost = WiFi.status() == 1 || WiFi.status() == 5 || WiFi.status() == 7;
+  wifi_lost = WiFi.status() == WL_NO_SSID_AVAIL || WiFi.status() == WL_CONNECTION_LOST || WiFi.status() == 7;
   server_is_off = digitalRead(STATUS_PIN) != HIGH;
 
   Serial.println("Checking the status");
@@ -46,13 +46,15 @@ void loop() {
     Serial.println("The power seems to be down. Waiting for the power to restore and send turn on signal to the server.");
     // Wait untill Wi-Fi is available (i.e. the power is back)
     while (WiFi.status() != WL_CONNECTED) delay(100);
-    digitalWrite(WAKE_PIN, HIGH);
+    pinMode(WAKE_PIN, OUTPUT);
     delay(100);
-    digitalWrite(WAKE_PIN, LOW);
+    pinMode(WAKE_PIN, INPUT);
     Serial.println("Signal sent");
   } else {
-    Serial.println("Everyting's okay, sleeping 5 secs");
+    Serial.print("Everyting's okay, sleeping ");
+    Serial.print(SLEEP_TIME);
+    Serial.println(" secs.");
   }
 
-  delay(5000);
+  delay(SLEEP_TIME * 1000);
 }
\ No newline at end of file