#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/adc.h"

#define IR_SENSOR_PIN 26 // GPIO 26 is ADC0

int main() {
    stdio_init_all();

    // Initialize ADC
    adc_init();
    adc_gpio_init(IR_SENSOR_PIN); // Enable ADC function on GPIO 26
    adc_select_input(0);          // Select ADC0 (GPIO 26)

    printf("Analog IR Sensor Test\n");

    while (true) {
        // Read the analog value from the IR sensor
        uint16_t raw_value = adc_read(); // ADC value (0-4095)
        float voltage = (raw_value * 3.3) / 4095.0; // Convert to voltage (0-3.3V)

        // Print the raw value and voltage
        printf("IR Sensor Value: %u, Voltage: %.2fV\n", raw_value, voltage);

        sleep_ms(500); // Delay for readability
    }
}
/*this is the digital form of it 
#include <stdio.h>
#include "pico/stdlib.h"

#define IR_SENSOR_PIN 26 // Pin connected to the IR sensor's OUT pin

int main() {
    // Initialize stdio for debug output
    stdio_init_all();

    // Initialize the IR sensor pin as input
    gpio_init(IR_SENSOR_PIN);
    gpio_set_dir(IR_SENSOR_PIN, GPIO_IN);

    printf("IR Sensor Test Initialized\n");

    while (true) {
        // Read the state of the IR sensor
        bool isObstacle = gpio_get(IR_SENSOR_PIN);

        if (isObstacle) {
            printf("No Obstacle Detected\n");
        } else {
            printf("Obstacle Detected!\n");
        }

        sleep_ms(500); // Check every 500ms
    }
}


*/