103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/*****************************************************************************
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* Copyright (c) 2019, Nations Technologies Inc.
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*
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* All rights reserved.
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* ****************************************************************************
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Nations' name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ****************************************************************************/
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/**
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* @file drv_i2c.h
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* @author Nations
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* @version v1.0.0
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*
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* @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
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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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/* n32 config class */
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struct n32_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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/* n32 i2c dirver class */
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struct n32_i2c
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{
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struct rt_i2c_bit_ops ops;
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struct rt_i2c_bus_device i2c2_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 I2C2_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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struct rt_i2c_bus
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{
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struct rt_i2c_bus_device parent;
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rt_uint32_t i2c_periph;
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};
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int rt_hw_i2c_init(void);
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#endif /* __DRV_I2C__ */
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