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using open-drain for power on signal, added option for sleep time.

This commit is contained in:
leca 2025-04-10 22:22:57 +03:00
parent 3cd3051149
commit b0e9dfea36
2 changed files with 12 additions and 9 deletions
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3
README.md
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@ -13,9 +13,10 @@ cp src/secrets.h.template src/secrets.h
nano src/secrets.h nano src/secrets.h
``` ```
If you wish to change GPIO pins, please, do it in ``src/src.info`` If you wish to change GPIO pins, please, do it in ``src/src.info``
Flash the sketch in your board 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) 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 3. Connect pin WAKE_PIN to power pin on your motherboard
4. Connect GND to motherboard's ground. 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. 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.

18
src/src.ino
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@ -10,13 +10,13 @@
#define STATUS_PIN D5 #define STATUS_PIN D5
#define WAKE_PIN D6 #define WAKE_PIN D6
#define SLEEP_TIME 5 // seconds
static bool wifi_lost = false; static bool wifi_lost = false;
static bool server_is_off = false; static bool server_is_off = false;
void setup() { void setup() {
Serial.begin(9600); Serial.begin(9600);
WiFi.mode(WIFI_STA); WiFi.mode(WIFI_STA);
WiFi.disconnect(); WiFi.disconnect();
@ -24,16 +24,16 @@ void setup() {
Serial.println("Connecting to a Wi-Fi network"); Serial.println("Connecting to a Wi-Fi network");
WiFi.begin(WIFI_SSID, WIFI_PASSWORD); 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"); Serial.println("Wi-Fi connected");
pinMode(STATUS_PIN, INPUT); pinMode(STATUS_PIN, INPUT);
pinMode(WAKE_PIN, OUTPUT); pinMode(WAKE_PIN, INPUT);
} }
void loop() { 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; server_is_off = digitalRead(STATUS_PIN) != HIGH;
Serial.println("Checking the status"); 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."); 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) // Wait untill Wi-Fi is available (i.e. the power is back)
while (WiFi.status() != WL_CONNECTED) delay(100); while (WiFi.status() != WL_CONNECTED) delay(100);
digitalWrite(WAKE_PIN, HIGH); pinMode(WAKE_PIN, OUTPUT);
delay(100); delay(100);
digitalWrite(WAKE_PIN, LOW); pinMode(WAKE_PIN, INPUT);
Serial.println("Signal sent"); Serial.println("Signal sent");
} else { } 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);
} }