70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-01-09 shelton first version
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*/
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#ifndef __DRV_I2C__
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#define __DRV_I2C__
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#include <rtthread.h>
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#include <rthw.h>
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#include <rtdevice.h>
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/* at32 config class */
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struct at32_soft_i2c_config
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{
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rt_uint8_t scl;
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rt_uint8_t sda;
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const char *bus_name;
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};
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/* at32 i2c dirver class */
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struct at32_i2c
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{
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struct rt_i2c_bit_ops ops;
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struct rt_i2c_bus_device i2c_bus;
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};
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#ifdef BSP_USING_I2C1
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#define I2C1_BUS_CONFIG \
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{ \
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.scl = BSP_I2C1_SCL_PIN, \
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.sda = BSP_I2C1_SDA_PIN, \
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.bus_name = "i2c1", \
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}
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#endif
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#ifdef BSP_USING_I2C2
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#define i2c_bus_CONFIG \
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{ \
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.scl = BSP_I2C2_SCL_PIN, \
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.sda = BSP_I2C2_SDA_PIN, \
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.bus_name = "i2c2", \
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}
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#endif
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#ifdef BSP_USING_I2C3
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#define I2C3_BUS_CONFIG \
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{ \
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.scl = BSP_I2C3_SCL_PIN, \
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.sda = BSP_I2C3_SDA_PIN, \
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.bus_name = "i2c3", \
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}
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#endif
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#ifdef BSP_USING_I2C4
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#define I2C4_BUS_CONFIG \
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{ \
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.scl = BSP_I2C4_SCL_PIN, \
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.sda = BSP_I2C4_SDA_PIN, \
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.bus_name = "i2c4", \
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}
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#endif
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int rt_hw_i2c_init(void);
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#endif
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