Radio subida

Radio/Radio_piloto/ptt.cpp

@@ -0,0 +1,62 @@
+#include "ptt.hpp"
+#include "config.hpp"
+
+#include <Arduino.h>
+
+static bool stable_pressed = false;
+static bool last_raw_pressed = false;
+static uint32_t last_raw_change_ms = 0;
+
+bool ptt_init()
+{
+    // KEY2 no lleva resistencia pull-up externa, por lo que activamos
+    // la pull-up interna. Al pulsar KEY2, GPIO13 queda conectado a GND.
+    pinMode(PTT_BUTTON_GPIO, INPUT_PULLUP);
+    delay(10);
+
+    last_raw_pressed =
+        (digitalRead(PTT_BUTTON_GPIO) == PTT_BUTTON_ACTIVE_LEVEL);
+    stable_pressed = last_raw_pressed;
+    last_raw_change_ms = millis();
+
+#if PILOT_DEBUG_SERIAL
+    Serial.println("PTT configurado en KEY2 (GPIO13, activo a nivel LOW)");
+    Serial.println("DIP: 1=ON, 2=OFF y 4=OFF para usar KEY2 sin conflictos");
+#endif
+
+    return true;
+}
+
+bool ptt_is_pressed()
+{
+    const bool raw_pressed =
+        (digitalRead(PTT_BUTTON_GPIO) == PTT_BUTTON_ACTIVE_LEVEL);
+
+    // Reinicia el temporizador cada vez que cambia la lectura instantanea.
+    if (raw_pressed != last_raw_pressed) {
+        last_raw_pressed = raw_pressed;
+        last_raw_change_ms = millis();
+    }
+
+    // Solo acepta el nuevo estado cuando se mantiene estable el tiempo
+    // indicado. Esto elimina los rebotes mecanicos del pulsador.
+    if (stable_pressed != last_raw_pressed &&
+        (uint32_t)(millis() - last_raw_change_ms) >= PTT_DEBOUNCE_MS) {
+        stable_pressed = last_raw_pressed;
+
+#if PILOT_DEBUG_SERIAL
+        Serial.println(stable_pressed
+            ? "PTT KEY2 ACTIVADO"
+            : "PTT KEY2 DESACTIVADO");
+#endif
+    }
+
+#if PTT_BUTTON_DEBUG
+    Serial.print("KEY2 raw=");
+    Serial.print(raw_pressed ? "PULSADO" : "LIBRE");
+    Serial.print(" estable=");
+    Serial.println(stable_pressed ? "PULSADO" : "LIBRE");
+#endif
+
+    return stable_pressed;
+}