44 lines
820 B
C
44 lines
820 B
C
|
/*
|
||
|
|
* Copyright (c) 2006-2019, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2019-07-29 zdzn first version
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __DRV_I2C_H__
|
||
|
|
#define __DRV_I2C_H__
|
||
|
|
|
||
|
|
#include <rtdevice.h>
|
||
|
|
#include <rtthread.h>
|
||
|
|
|
||
|
|
#include "board.h"
|
||
|
|
|
||
|
|
struct raspi_master_config_t
|
||
|
|
{
|
||
|
|
rt_uint8_t sdl_pin;
|
||
|
|
rt_uint8_t scl_pin;
|
||
|
|
rt_uint8_t sdl_pin_mode;
|
||
|
|
rt_uint8_t scl_pin_mode;
|
||
|
|
rt_uint8_t slave_address;
|
||
|
|
rt_uint32_t bsc_base;
|
||
|
|
rt_uint16_t clk_div;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct raspi_i2c_bus
|
||
|
|
{
|
||
|
|
struct rt_i2c_bus_device device;
|
||
|
|
struct rt_i2c_msg *msg;
|
||
|
|
rt_uint32_t msg_cnt;
|
||
|
|
volatile rt_uint32_t msg_ptr;
|
||
|
|
volatile rt_uint32_t dptr;
|
||
|
|
char *device_name;
|
||
|
|
struct raspi_master_config_t *cfg;
|
||
|
|
};
|
||
|
|
|
||
|
|
int rt_hw_i2c_init(void);
|
||
|
|
|
||
|
|
#endif
|