PCF8563/85063 高精度时钟IIC芯片 ESP驱动程序

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已于 2022-12-27 14:03:13 修改 · 3.3k 阅读

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#1024程序员节

于 2022-10-24 10:15:51 首次发布

该博客介绍了一个使用ESP32通过I2C接口与PCF85063时间传感器交互的简单示例。代码展示了如何初始化I2C，读写传感器寄存器以设置和获取时间，包括转换BCD码的函数。示例中还包含一个测试循环，用于周期性地读取和打印时间。

/* 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 PCF85063 inertial measurement unit.
*/
#include <stdio.h>
#include "esp_log.h"
#include "driver/i2c.h"


static const char *TAG = "i2c-pcf85063";


#define I2C_MASTER_SDA_IO           36   //CONFIG_I2C_MASTER_SDA      /*!< GPIO number used for I2C master data  */
#define I2C_MASTER_SCL_IO           35   //CONFIG_I2C_MASTER_SCL      /*!< GPIO number used for I2C master clock */

#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          400000                     /*!< I2C master clock frequency */
#define I2C_MASTER_TX_BUF_DISABLE   0                          /*!< I2C master doesn't