esp-ena/components/i2c-main/i2c-main.c

// Copyright 2020 Lukas Haubaum
//
// Licensed under the GNU Affero General Public License, Version 3;
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     https://www.gnu.org/licenses/agpl-3.0.html
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <stdio.h>

#include "driver/i2c.h"

#include "i2c-main.h"

static bool i2c_initialized = false;

void i2c_main_init()
{
    i2c_config_t i2c_config = {
        .mode = I2C_MODE_MASTER,
        .sda_io_num = I2C_SDA_PIN,
        .scl_io_num = I2C_SCL_PIN,
        .sda_pullup_en = GPIO_PULLUP_ENABLE,
        .scl_pullup_en = GPIO_PULLUP_ENABLE,
        .master.clk_speed = I2C_CLK_SPEED};
    ESP_ERROR_CHECK(i2c_param_config(I2C_NUM_0, &i2c_config));
    ESP_ERROR_CHECK(i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, 0, 0, 0));
    i2c_initialized = true;
}

bool i2c_is_initialized()
{
    return i2c_initialized;
}