mirror of
https://github.com/alexandrebobkov/ESP-Nodes.git
synced 2025-11-04 03:38:27 +00:00
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
|
|
/* ESP32 Module I2C Master Device
|
|
|
|
Author: Alexander Bobkov
|
|
Date: July 3, 2024
|
|
Modified: July 9, 2024
|
|
|
|
|
|
Adopted from i2c - Simple example
|
|
|
|
Simple I2C example that shows how to initialize I2C
|
|
as well as reading and writing from and to registers for a sensor connected over I2C.
|
|
|
|
The sensor used in this example is a MPU9250 inertial measurement unit.
|
|
|
|
For other examples please check:
|
|
https://github.com/espressif/esp-idf/tree/master/examples
|
|
|
|
See README.md file to get detailed usage of this example.
|
|
|
|
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
|
|
|
Unless required by applicable law or agreed to in writing, this
|
|
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "esp_log.h"
|
|
#include "i2c_bus.h"
|
|
#include "bme280.h"
|
|
|
|
static const char *TAG = "i2c-simple-example";
|
|
|
|
int i2c_master_port = 0;
|
|
static i2c_bus_handle_t i2c_bus = NULL;
|
|
static bme280_handle_t bme280 = NULL;
|
|
|
|
i2c_config_t conf = {
|
|
.mode = I2C_MODE_MASTER,
|
|
.sda_io_num = 21,
|
|
.sda_pullup_en = GPIO_PULLUP_ENABLE,
|
|
.scl_io_num = 22,
|
|
.sda_pullup_en = GPIO_PULLUP_ENABLE,
|
|
.master.clk_speed = 400000,
|
|
.clk_flags= 0,
|
|
};
|
|
|
|
|
|
void app_main(void)
|
|
{
|
|
i2c_bus = i2c_bus_create(i2c_master_port, &conf);
|
|
bme280 = bme280_create(i2c_bus, BME280_I2C_ADDRESS_DEFAULT);
|
|
bme280_default_init(bme280);
|
|
|
|
}
|
|
|
|
/*
|
|
#include <stdio.h>
|
|
#include "esp_log.h"
|
|
|
|
void app_main(void)
|
|
{
|
|
|
|
}
|
|
*/ |