1 /*
2  * Copyright (C) 2022-2024, Xiaohua Semiconductor Co., Ltd.
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  *
6  * Change Logs:
7  * Date           Author       Notes
8  * 2022-04-28     CDT          first version
9  */
10 
11 #ifndef __DRV_I2C_H__
12 #define __DRV_I2C_H__
13 
14 #include <rtdevice.h>
15 #include "board_config.h"
16 #include "drv_irq.h"
17 #include "drv_dma.h"
18 
19 #ifdef BSP_USING_I2C
20 
21 /* C binding of definitions if building with C++ compiler */
22 #ifdef __cplusplus
23 extern "C"
24 {
25 #endif
26 
27 /*******************************************************************************
28  * Global type definitions ('typedef')
29  ******************************************************************************/
30 struct hc32_i2c_config
31 {
32     const char              *name;
33     CM_I2C_TypeDef          *Instance;
34     rt_uint32_t             clock;
35     rt_uint32_t             baudrate;
36     rt_uint32_t             timeout;
37     struct dma_config       *i2c_tx_dma;
38     struct dma_config       *i2c_rx_dma;
39 };
40 
41 struct hc32_i2c
42 {
43     struct hc32_i2c_config      *config;
44     struct rt_i2c_bus_device    i2c_bus;
45     rt_uint8_t                  i2c_dma_flag;
46 };
47 
48 /*******************************************************************************
49  * Global pre-processor symbols/macros ('#define')
50  ******************************************************************************/
51 #define I2C_USING_TX_DMA_FLAG       (1U)
52 #define I2C_USING_RX_DMA_FLAG       (1U << 1)
53 
54 #ifdef __cplusplus
55 }
56 #endif
57 
58 #endif /* BSP_USING_I2C */
59 
60 #endif /* __DRV_I2C_H__ */
61