kest_i2c.h

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#ifndef KEST_ESP32_I2C_H_
#define KEST_ESP32_I2C_H_
 
#include <stdint.h>
 
#define I2C_MASTER_SCL_IO           7
#define I2C_MASTER_SDA_IO           8
#define I2C_MASTER_NUM              0
#define I2C_MASTER_FREQ_HZ          100000
#define I2C_MASTER_TX_BUF_DISABLE   0
#define I2C_MASTER_RX_BUF_DISABLE   0
#define I2C_MASTER_TIMEOUT_MS       10
 
esp_err_t i2c_master_init();
 
int i2c_transmit_persistent(uint8_t addr, uint8_t *buf, int n, int retries);
int i2c_transmit(uint8_t addr, uint8_t *buf, int n);
int i2c_receive(uint8_t addr, uint8_t *buf, int n);
 
extern SemaphoreHandle_t i2c_mutex;
 
#endif