#include <stdio.h>
#include "pico/stdlib.h"
#include "string.h"
#include "hardware/gpio.h"
#include "dht22-pico.h"
#include "ss_oled.h"

// RPI Pico
#define SDA_PIN 20
#define SCL_PIN 21
#define RESET_PIN -1

int rc;
SSOLED oled;
static uint8_t ucBuffer[1024];
#define OLED_WIDTH 128
#define OLED_HEIGHT 64

const uint LED_PIN = PICO_DEFAULT_LED_PIN;
const uint DHT_PIN = 15;

void blink() {
    sleep_ms(50);
    gpio_put(LED_PIN, 1);
    sleep_ms(50);
    gpio_put(LED_PIN, 0);
}

int main() {
    stdio_init_all();
    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);

    dht_reading dht = dht_init(DHT_PIN);

    uint8_t uc[8];
    int i, j;
    char szTemp[32];
    
    rc = oledInit(&oled, OLED_128x64, 0x3c, 0, 0, 1, SDA_PIN, SCL_PIN, RESET_PIN, 1000000L);
    if (rc != OLED_NOT_FOUND)
    { 
        oledFill(&oled, 0,1);
        oledSetContrast(&oled, 127);
        oledWriteString(&oled, 0,0,2,(char *)"Nivel de ruido:", FONT_NORMAL,0,1); // Adicionando a mensagem "nivel de ruido::"
        sleep_ms(4000);
    }
    
    oledSetBackBuffer(&oled, ucBuffer);
    while (1) {
        sleep_ms(2000);

        uint8_t status = dht_read(&dht);
        if (status == DHT_OK) {
            printf("RH: %.1f%%\tTemp: %.1fC\n", dht.humidity, dht.temp_celsius);
            sprintf(szTemp,"RH: %.1f%%\tTemp: %.1fC\n", dht.humidity, dht.temp_celsius );
            oledWriteString(&oled, 0,0,2,(char *)"Nivel de ruido:", FONT_NORMAL,0,1);
            blink();
        } else if (status == DHT_ERR_CHECKSUM) {
            printf("Bad data (checksum)\n");
            blink();
            blink();
        } else {
            printf("Bad data (NaN)\n");
            blink();
            blink();
        }
    }
    return 0;
}