OVMS3-idf/components/esp_audio/include/driver/i2c_soft.h

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2016-11-16 13:58:04 +00:00
#ifndef __I2C_MASTER_H__
#define __I2C_MASTER_H__
#include <stdio.h>
#include "driver/gpio.h"
#include "esp_types.h"
#include "rom/ets_sys.h"
#if 0
#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_MTMS_U
#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_MTDO_U
#define I2C_MASTER_SDA_GPIO 14
#define I2C_MASTER_SCL_GPIO 15
#define I2C_MASTER_SDA_FUNC FUNC_MTMS_GPIO14
#define I2C_MASTER_SCL_FUNC FUNC_MTDO_GPIO15
#endif
#if 0
#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO26_U
#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_GPIO27_U
#define I2C_MASTER_SDA_GPIO 26
#define I2C_MASTER_SDA_PIN GPIO_Pin_26
#define I2C_MASTER_SCL_PIN GPIO_Pin_27
#define I2C_MASTER_SCL_GPIO 27
#define I2C_MASTER_SDA_FUNC FUNC_GPIO26_GPIO26
#define I2C_MASTER_SCL_FUNC FUNC_GPIO27_GPIO27
#endif
#if 1
#define I2C_MASTER_SDA_GPIO 21
#define I2C_MASTER_SDA_PIN GPIO_SEL_21
#define I2C_MASTER_SCL_PIN GPIO_SEL_19
#define I2C_MASTER_SCL_GPIO 19
#endif
#if 0
#define I2C_MASTER_SDA_MUX PERIPHS_IO_MUX_GPIO23_U
#define I2C_MASTER_SCL_MUX PERIPHS_IO_MUX_GPIO5_U
#define I2C_MASTER_SDA_GPIO 23
#define I2C_MASTER_SDA_PIN GPIO_Pin_23
#define I2C_MASTER_SCL_PIN GPIO_Pin_5
#define I2C_MASTER_SCL_GPIO 5
#define I2C_MASTER_SDA_FUNC FUNC_GPIO23_GPIO23
#define I2C_MASTER_SCL_FUNC FUNC_GPIO5_GPIO5
#endif
#define I2C_MASTER_SDA_HIGH_SCL_HIGH() \
gpio_set_level(I2C_MASTER_SDA_GPIO,1);\
gpio_set_level(I2C_MASTER_SCL_GPIO,1);
#define I2C_MASTER_SDA_HIGH_SCL_LOW() \
gpio_set_level(I2C_MASTER_SDA_GPIO,1);\
gpio_set_level(I2C_MASTER_SCL_GPIO,0);
#define I2C_MASTER_SDA_LOW_SCL_HIGH() \
gpio_set_level(I2C_MASTER_SDA_GPIO,0);\
gpio_set_level(I2C_MASTER_SCL_GPIO,1);
#define I2C_MASTER_SDA_LOW_SCL_LOW() \
gpio_set_level(I2C_MASTER_SDA_GPIO,0);\
gpio_set_level(I2C_MASTER_SCL_GPIO,0);
/** \defgroup Driver_APIs Driver APIs
* @brief Driver APIs
*/
/** @addtogroup Driver_APIs
* @{
*/
/** \defgroup I2C_Driver_APIs I2C_MASTER Driver APIs
* @brief UART driver APIs
*/
/** @addtogroup I2C_MASTER_Driver_APIs
* @{
*/
/**
* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
*
* @param null
*
* @return null
*/
void i2c_master_gpio_init(void);
/**
* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
*
* @param initilize I2C bus to enable i2c operations.
*
* @return null
*/
void i2c_master_init(void);
#define i2c_master_wait ets_delay_us
/**
* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
*
* @param set i2c to stop sending state.
*
* @return null
*/
void i2c_master_stop(void);
/**
* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
*
* @param set i2c to start sending state.
*
* @return null
*/
void i2c_master_start(void);
/**
* @brief i2c_master_gpio_init,config SDA and SCL gpio to open-drain output mode.
*
* @param set ack to i2c bus as level value.
*
* @return null
*/
void i2c_master_setAck(uint8_t level);
/**
* @brief confirm if peer send ack.
*
* @param null
*
* @return null
*/
uint8_t i2c_master_getAck(void);
/**
* @brief read Byte from i2c bus.
*
* @param null
*
* @return the byte which read from i2c bus.
*/
uint8_t i2c_master_readByte(void);
/**
* @brief write wrdata value(one byte) into i2c.
*
* @param uint8_t wrdata:write value
*
* @return null
*/
void i2c_master_writeByte(uint8_t wrdata);
/**
* @brief i2c_master_checkAck.
*
* @param null
*
* @return the result of check ack
*/
bool i2c_master_checkAck(void);
/**
* @brief i2c master send Ack.
*
* @param null
*
* @return null
*/
void i2c_master_send_ack(void);
/**
* @brief i2c master send Nack.
*
* @param null
*
* @return null
*/
void i2c_master_send_nack(void);
/**
* @}
*/
/**
* @}
*/
#endif