ESP-IDF v5.3.1 测量SHT30/SHT3x的简单驱动代码

基础齿轮

于 2024-11-24 00:24:26 发布

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文章标签： mcu c语言

本文链接：https://blog.youkuaiyun.com/qq_45975979/article/details/144001537

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#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/i2c_master.h"

i2c_master_bus_config_t bus_config = {
    .clk_source = I2C_CLK_SRC_DEFAULT,
    .i2c_port = I2C_NUM_0,
    .scl_io_num = GPIO_NUM_9,
    .sda_io_num = GPIO_NUM_8,
    .glitch_ignore_cnt = 7,
    .flags.enable_internal_pullup = true,
};

i2c_master_bus_handle_t bus_handle;

i2c_device_config_t sht30_config = {
    .dev_addr_length = I2C_ADDR_BIT_7,
    .device_address = 0x44,
    .scl_speed_hz = 100 * 1000
};

i2c_master_dev_handle_t sht30_device;

uint8_t commands[] = {0x24, 0x00};
//对应数据手册中，没有时钟延伸的高重复性测量指令，单次测量

void app_main (void) {

    i2c_new_master_bus(&bus_config, &bus_handle);
    i2c_master_bus_add_device(bus_handle, &sht30_config, &sht30_device);
    //进行正常的IIC总线与设备初始化

    uint8_t read_buffer[6] = {};
    float temperature;
    float humidity;
    //由于要精确到