int i2c_master_port = 0;
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_MASTER_SDA_IO, // select GPIO specific to your project
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = I2C_MASTER_SCL_IO, // select GPIO specific to your project
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ, // select frequency specific to your project
// .clk_flags = 0, /*!< Optional, you can use I2C_SCLK_SRC_FLAG_* flags to choose i2c source clock here. */
};
int i2c_slave_port = I2C_SLAVE_NUM;
i2c_config_t conf_slave = {
.sda_io_num = I2C_SLAVE_SDA_IO, // select GPIO specific to your project
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = I2C_SLAVE_SCL_IO, // select GPIO specific to your project
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.mode = I2C_MODE_SLAVE,
.slave.addr_10bit_en = 0,
.slave.slave_addr = ESP_SLAVE_ADDR, // address of your project
};
-
typedef enum {
I2C_SCLK_DEFAULT = 0, /*!< I2C source clock not selected*/
#if SOC_I2C_SUPPORT_APB
I2C_SCLK_APB, /*!< I2C source clock from APB, 80M*/
#endif
#if SOC_I2C_SUPPORT_XTAL
I2C_SCLK_XTAL, /*!< I2C source clock from XTAL, 40M */
#endif
#if SOC_I2C_SUPPORT_RTC
I2C_SCLK_RTC, /*!< I2C source clock from 8M RTC, 8M */
#endif
#if SOC_I2C_SUPPORT_REF_TICK
I2C_SCLK_REF_TICK, /*!< I2C source clock from REF_TICK, 1M */
#endif
I2C_SCLK_MAX,
} i2c_sclk_t;
