Add device standby state

[github-actions[bot]]

- Dark display

- No mic

- Just websockets and touch to wake again

https://github.com/Lixie-Labs/Emotiscope/blob/d5133541f6a2e7e30134a6a3c61610c747598f71/src/touch.h#L15

// Define the touch pad pin number, replace TOUCH_PIN with the actual touch pad you're using
#define TOUCH_PIN 1

// Threshold for considering a touch detected
#define TOUCH_THRESHOLD 40000

#define TOUCH_HOLD_MS 500

uint32_t touch_start = 0;
uint32_t touch_end   = 0;

bool touch_active = false;
bool hold_active = false;

// TODO: Add device standby state
// - Dark display
// - No mic
// - Just websockets and touch to wake again

void read_touch( uint32_t t_now_ms ){
    static float touch_value = 0;

    int32_t raw_touch_value = touchRead( TOUCH_PIN );
    touch_value = raw_touch_value * 0.15 + touch_value * 0.85; // Smooth the input

    if(touch_value >= TOUCH_THRESHOLD){
        if(touch_active == false){
            touch_active = true;
            hold_active = false;
            touch_start = t_now_ms;
        }
        else{
            uint32_t touch_hold_time = t_now_ms - touch_start;

            if(touch_hold_time >= TOUCH_HOLD_MS){
                // Handle hold
                if(hold_active == false){
                    hold_active = true;
                    printf("HOLD TOUCH TRIGGER\n");
                }
            }
        }
    }
    else{
        if(touch_active == true){
            touch_active = false;
            hold_active = false;
            touch_end = t_now_ms;
            int32_t touch_duration = touch_end-touch_start;

            if(touch_duration < TOUCH_HOLD_MS){
                // Handle tap
                printf("TAP TOUCH TRIGGER\n");
            }
        }
    }
}

[github-actions[bot]]

Closed in fa0bdc19d0ddd2aec715c9133a7af9ebed9601ac