44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
#include "Input.h"
|
|
|
|
#include <esp32-hal-adc.h>
|
|
|
|
void setupInputPinModes() {
|
|
pinMode(BTN_GPIO1, INPUT);
|
|
pinMode(BTN_GPIO2, INPUT);
|
|
pinMode(BTN_GPIO3, INPUT_PULLUP); // Power button
|
|
}
|
|
|
|
// Get currently pressed button by reading ADC values (and digital for power
|
|
// button)
|
|
Button getPressedButton() {
|
|
// Check BTN_GPIO3 (Power button) - digital read
|
|
if (digitalRead(BTN_GPIO3) == LOW) return POWER;
|
|
|
|
// Check BTN_GPIO1 (4 buttons on resistor ladder)
|
|
const int btn1 = analogRead(BTN_GPIO1);
|
|
if (btn1 < BTN_RIGHT_VAL + BTN_THRESHOLD) return RIGHT;
|
|
if (btn1 < BTN_LEFT_VAL + BTN_THRESHOLD) return LEFT;
|
|
if (btn1 < BTN_CONFIRM_VAL + BTN_THRESHOLD) return CONFIRM;
|
|
if (btn1 < BTN_BACK_VAL + BTN_THRESHOLD) return BACK;
|
|
|
|
// Check BTN_GPIO2 (2 buttons on resistor ladder)
|
|
const int btn2 = analogRead(BTN_GPIO2);
|
|
if (btn2 < BTN_VOLUME_DOWN_VAL + BTN_THRESHOLD) return VOLUME_DOWN;
|
|
if (btn2 < BTN_VOLUME_UP_VAL + BTN_THRESHOLD) return VOLUME_UP;
|
|
|
|
return NONE;
|
|
}
|
|
|
|
Input getInput(const long maxHoldMs) {
|
|
const Button button = getPressedButton();
|
|
if (button == NONE) return {NONE, 0};
|
|
|
|
const auto start = millis();
|
|
unsigned long held = 0;
|
|
while (getPressedButton() == button && (maxHoldMs < 0 || held < maxHoldMs)) {
|
|
delay(50);
|
|
held = millis() - start;
|
|
}
|
|
return {button, held};
|
|
}
|