145 lines
4.2 KiB
C
145 lines
4.2 KiB
C
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/*
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* File : drv_i2c.h
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* This file is part of gkipc BSP for RT-Thread distribution.
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*
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* Copyright (c) 2017 ChengDu goke Microelectronics Co., Ltd.
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* All rights reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Visit http://www.goke.com to get contact with goke.
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*
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* Change Logs:
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* Date Author Notes
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*/
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#ifndef _I2C_H_
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#define _I2C_H_
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#include <rtthread.h>
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/*!
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*******************************************************************************
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** \brief I2C channel number.
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*******************************************************************************
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*/
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typedef enum
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{
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RT_I2C_CHANNEL_ONE = 0, /*!< I2C channel 1.*/
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RT_I2C_CHANNEL_TWO, /*!< I2C channel 2.*/
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}RT_I2C_ChannelT;
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/*!
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*******************************************************************************
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** \brief I2C operition modes.
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*******************************************************************************
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*/
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typedef enum
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{
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RT_I2C_GENERIC_MASTER_MODE, /*!< Generic master mode.*/
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RT_I2C_GENERIC_SLAVER_MODE, /*!< Generic slave mode.*/
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RT_I2C_AUTO_MASTER_MODE, /*!< Auto master mode.*/
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RT_I2C_AUTO_SLAVER_MODE, /*!< Auto slave mode.*/
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RT_I2C_DMA_MASTER_MODE, /*!< DMA master mode.*/
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RT_I2C_DMA_SLAVER_MODE, /*!< DMA slave mode.*/
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}RT_I2C_OpenModeT;
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/*!
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*******************************************************************************
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** \brief Protocol modes.
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*******************************************************************************
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*/
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typedef enum
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{
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RT_I2C_COMMON_PROTOCOL = 0, /*!< Common protocol.*/
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RT_I2C_RESTART_PROTOCOL, /*!< Protocol with restart.*/
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}RT_I2C_ProtocolT;
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/*!
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*******************************************************************************
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** \brief I2C datarate speed modes.
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*******************************************************************************
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*/
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typedef enum
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{
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RT_I2C_100KBPS = 100000, /*!< 100kHz datarate.*/
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RT_I2C_400KBPS = 400000, /*!< 400kHz datarate.*/
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}RT_I2C_SpeedT;
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/*!
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*******************************************************************************
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** \brief I2C transmit modes.
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*******************************************************************************
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*/
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typedef enum
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{
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RT_I2C_NORMAL = 0,
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RT_I2C_TURBO_MODE, // write operation only.
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RT_I2C_INTERRUPT,
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}RT_I2C_ModeT;
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/*!
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*******************************************************************************
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** \brief Init parameters.
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*******************************************************************************
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*/
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typedef struct
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{
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RT_I2C_OpenModeT mode; /*!< Operation mode.*/
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rt_int8_t priority; /*!< IRQ priority */
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rt_int8_t gpioSdaPinCh1; /*!< GPIO SDA pin assigmnet channel 1.*/
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rt_int8_t gpioSclPinCh1; /*!< GPIO SCL pin assigmnet channel 1.*/
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rt_int8_t gpioSdaPinCh2; /*!< For future use.*/
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rt_int8_t gpioSclPinCh2; /*!< For future use.*/
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}RT_I2C_InitParamsT;
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/*!
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*******************************************************************************
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** \brief Open parameters.
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*******************************************************************************
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*/
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typedef struct
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{
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RT_I2C_ChannelT channel; /*!< i2c channel index*/
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RT_I2C_SpeedT speed; /*!< i2c speed*/
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RT_I2C_ModeT mode; /*!< i2c mode*/
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}RT_I2C_OpenParamsT;
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typedef struct gk_i2c_config
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{
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RT_I2C_InitParamsT i2cInitParams;
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}gk_i2c_config_s;
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typedef struct gk_i2c_obj
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{
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rt_uint32_t id;
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rt_uint32_t handle;
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rt_mutex_t lock;
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gk_i2c_config_s config;
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}gk_i2c_obj_s;
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void rt_hw_i2c_init(void);
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#endif/*_I2C_H_*/
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