rt-thread/bsp/stm32/libraries/HAL_Drivers/drivers/drv_hard_i2c.h

/*
 * Copyright (c) 2006-2023, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2024-02-17     Dyyt587   first version
 */

#ifndef __DRV_HARD_I2C_H__
#define __DRV_HARD_I2C_H__

#include <drv_common.h>
#include "drv_dma.h"
#include "drv_config.h"
#include <ipc/completion.h>

/* C binding of definitions if building with C++ compiler */
#ifdef __cplusplus
extern "C"
{
#endif

struct stm32_i2c_config
{
    const char        *name;
    I2C_TypeDef       *Instance;
    rt_uint32_t       timing;
    rt_uint32_t       timeout;
    IRQn_Type         evirq_type;
    IRQn_Type         erirq_type;
    struct dma_config *dma_rx;
    struct dma_config *dma_tx;
};

struct stm32_i2c
{
    I2C_HandleTypeDef        handle;
    struct stm32_i2c_config  *config;
    struct
    {
        DMA_HandleTypeDef    handle_rx;
        DMA_HandleTypeDef    handle_tx;
    } dma;
    rt_uint8_t               i2c_dma_flag;
    struct rt_i2c_bus_device i2c_bus;
    struct rt_completion     completion;
};

#define I2C_USING_TX_DMA_FLAG       (1U)
#define I2C_USING_RX_DMA_FLAG       (1U << 1)

#ifdef __cplusplus
}
#endif

#endif /* __DRV_I2C_H__ */