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99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
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* Copyright (c) 2022 OpenLuat & AirM2M
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef LUAT_I2C_H
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#define LUAT_I2C_H
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#include "luat_base.h"
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#include "luat_i2c_legacy.h"
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/**
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* @ingroup luatos_device 外设接口
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* @{
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*/
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/**
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* @defgroup luatos_device_i2c I2C接口
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* @{
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*/
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/**
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* @brief 检查i2c是否存在
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*
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* @param id i2c_id
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* @return int
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*/
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int luat_i2c_exist(int id);
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/**
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* @brief 初始化i2c
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*
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* @param id i2c_id
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* @param speed i2c 速度
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* @param slaveaddr i2c 从地址
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* @return int
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*/
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int luat_i2c_setup(int id, int speed);
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/**
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* @brief 关闭 i2c
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*
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* @param id i2c_id
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* @return int
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*/
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int luat_i2c_close(int id);
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/**
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* @brief I2C 发送数据
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*
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* @param id i2c_id
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* @param addr 7位设备地址
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* @param buff 数据buff
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* @param len 数据长度
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* @param stop 是否发送停止位
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* @return int
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*/
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int luat_i2c_send(int id, int addr, void* buff, size_t len, uint8_t stop);
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/**
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* @brief I2C 接受数据
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*
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* @param id i2c_id
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* @param addr 7位设备地址
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* @param buff 数据buff
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* @param len 数据长度
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* @return int
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*/
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int luat_i2c_recv(int id, int addr, void* buff, size_t len);
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/**
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* @brief I2C 收发数据
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*
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* @param id i2c_id
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* @param addr 7位设备地址
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* @param reg 发送数据
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* @param reg_len 发送数据长度
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* @param buff 数据buff
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* @param len 数据长度
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* @return int
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*/
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int luat_i2c_transfer(int id, int addr, uint8_t *reg, size_t reg_len, uint8_t *buff, size_t len);
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/** @}*/
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/** @}*/
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#endif
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