From 26a3a757f167b7de920ffe4f3563c40e88e9d3eb Mon Sep 17 00:00:00 2001
From: uvok
Date: Sat, 19 Jul 2025 10:50:03 +0200
Subject: gpio: Re-attempt debouncing

---
 src/gpio.cpp | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/gpio.cpp b/src/gpio.cpp
index a7927a8..84dc545 100644
--- a/src/gpio.cpp
+++ b/src/gpio.cpp
@@ -34,9 +34,10 @@ static unsigned long releasedTime = 0;
 
 typedef struct
 {
-    uint32_t last_change;
+    // uint32_t last_change;
     uint32_t last_level;
     uint32_t pressed;
+    uint32_t released;
 } InputInfo_t;
 
 static volatile InputInfo_t inputs[NUM_DIGITAL_PINS];
@@ -107,22 +108,29 @@ static void gpio_loop(void *ctx)
             const bool pressed = !received.state;
             const uint8_t pin = received.pin;
             LOG_F("(%u) Pin %u was %s\n", received.timestamp, pin, pressed ? "pressed" : "released");
+            LOG_F("     pressed: %u, released: %u\n", inputs[pin].pressed, inputs[pin].released);
         }
     }
 }
 
-static ARDUINO_ISR_ATTR void gpio_pin_irq(void *arg)
+static ARDUINO_ISR_ATTR IRAM_ATTR void gpio_pin_irq(void *arg)
 {
-    uint8_t pin_no = (uint8_t)(ptrdiff_t)arg;
+    const uint8_t pin_no = (uint8_t)(ptrdiff_t)arg;
+    const int pinLevel = digitalRead(pin_no);
+
     uint32_t now = millis();
+    if (!pinLevel)
+    {
+        inputs[pin_no].pressed = now;
+        return;
+    }
+    inputs[pin_no].released = now;
+
     // Elecrow inputs - the selector - are very dirty...
     // const bool is_dirty = now - inputs[pin_no].last_change < 50;
-    // inputs[pin_no].last_change = now;
     // if (is_dirty)
     //     return;
 
-    int pinLevel = digitalRead(pin_no);
-
     pin_notification_t send = {.timestamp = now, .pin = pin_no, .state = (pinLevel == HIGH)};
     BaseType_t wakeup = false;
     xQueueSendFromISR(gpio_task_stuff.queue_handle, &send, &wakeup);
-- 
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