esp32-s3-wroom-1-i2c-ds3231-completo.c

#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <stdbool.h>
#include <unistd.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_log.h"
#include "sdkconfig.h"
#include "driver/i2c.h"

static const char *TAG = "Ejemplo-i2c2";


#define I2C_MASTER_SCL_IO           GPIO_NUM_9      /*!< GPIO number used for I2C master clock */
#define I2C_MASTER_SDA_IO           GPIO_NUM_8      /*!< GPIO number used for I2C master data  */
#define I2C_MASTER_NUM              0                          /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
#define I2C_MASTER_FREQ_HZ          100000                     /*!< I2C master clock frequency */
#define I2C_MASTER_TX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */
#define I2C_MASTER_RX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */
#define I2C_MASTER_TIMEOUT_MS       1000
#define DIRECCION_ESCLAVO 0x68

static esp_err_t i2c_master_init(void)
{
    int i2c_master_port = I2C_MASTER_NUM;

    i2c_config_t conf = {
        .mode = I2C_MODE_MASTER,
        .sda_io_num = I2C_MASTER_SDA_IO,
        .scl_io_num = I2C_MASTER_SCL_IO,
        .sda_pullup_en = GPIO_PULLUP_ENABLE,
        .scl_pullup_en = GPIO_PULLUP_ENABLE,
        .master.clk_speed = I2C_MASTER_FREQ_HZ,
    };

    i2c_param_config(i2c_master_port, &conf);

    return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
}

static esp_err_t leer_byte(uint8_t slv_address, uint8_t reg_addr, uint8_t *data, size_t len)
{
    return i2c_master_write_read_device(I2C_MASTER_NUM, slv_address, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
}

static esp_err_t escribir_byte(uint8_t slv_address, uint8_t reg_addr, uint8_t data)
{
    int ret;
    uint8_t write_buf[2] = {reg_addr, data};
    ret = i2c_master_write_to_device(I2C_MASTER_NUM, slv_address, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);

    return ret;
}

void programa1(void * pvParameters){
  
	for(;;){
    
 
 
		
 
	}
}
 
uint8_t cambiarValor(uint8_t entrada){
    uint8_t salida;
    uint8_t unidades = entrada&0x0F;
    uint8_t decenas = (entrada&0xF0)>>4;
    salida = decenas*10+unidades;
    return salida;

}


void programa2(void * pvParameters){
    uint8_t datos[10];
    char diaString[7][10] = {"Domingo", "Lunes", "Martes", "Miercoles", "Jueves", "Viernes", "Sabado"};
    char mesString[12][11] = {"Enero", "Febrero", "Marzo","Abril","Mayo","Junio","Julio","Agosto","Septiembre","Octubre","Noviembre","Diciembre"};


	for(;;){
        ESP_ERROR_CHECK(leer_byte(0x68, 0x00, datos, 7));
        uint8_t segundos = cambiarValor(datos[0]);
        uint8_t minutos  = cambiarValor(datos[1]);
        uint8_t hora     = cambiarValor(datos[2]);
        uint8_t diaSem   = cambiarValor(datos[3]);
        uint8_t dia      = cambiarValor(datos[4]);
        uint8_t mes      = cambiarValor(datos[5]);
        uint8_t anio     = cambiarValor(datos[6]);
        





        ESP_LOGI(TAG, "%s %i de %s del 20%i %i:%i:%i ", &diaString[diaSem][0], dia, &mesString[mes-1][0], anio, hora, minutos, segundos);
        sleep(1);
 
	}
}
 
 
 
void app_main(void){
    




    ESP_ERROR_CHECK(i2c_master_init());
    ESP_LOGI(TAG, "I2C initialized successfully");
    /*
    ESP_ERROR_CHECK(escribir_byte(0x68,0x00,0x00)); //segundos
    ESP_ERROR_CHECK(escribir_byte(0x68,0x01,0x12)); //minutos
    ESP_ERROR_CHECK(escribir_byte(0x68,0x02,0x13)); //horas
    ESP_ERROR_CHECK(escribir_byte(0x68,0x03,0x03)); //dia de la semana
    ESP_ERROR_CHECK(escribir_byte(0x68,0x04,0x23)); //dia
    ESP_ERROR_CHECK(escribir_byte(0x68,0x05,0x04)); //mes
    ESP_ERROR_CHECK(escribir_byte(0x68,0x06,0x24)); //anio
    */
    
	xTaskCreate(programa1, "Programa1", 4048, NULL, tskIDLE_PRIORITY, NULL);
	xTaskCreate(programa2, "Programa2", 4048, NULL, tskIDLE_PRIORITY, NULL);
 
 
}