forked from xuos/xiuos
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file dev_i2c.h
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* @brief define i2c dev function using bus driver framework
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* @version 1.0
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* @author AIIT XUOS Lab
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* @date 2021-04-24
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*/
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#ifndef DEV_I2C_H
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#define DEV_I2C_H
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#include <bus.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define I2C_SLAVE_ADDR 0x44
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#define I2C_WR 0x0000
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#define I2C_RD (1u << 0)
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#define I2C_ADDR_10BIT (1u << 2)
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#define I2C_NO_START (1u << 4)
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#define I2C_IGNORE_NACK (1u << 5)
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#define I2C_NO_READ_ACK (1u << 6)
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struct I2cDataStandard
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{
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uint16 addr;
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uint16 flags;
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uint16 len;
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uint16 retries;
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uint8 *buf;
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struct I2cDataStandard *next;
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};
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struct I2cHardwareDevice;
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struct I2cDevDone
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{
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uint32 (*dev_open) (struct I2cHardwareDevice *i2c_device);
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uint32 (*dev_close) (struct I2cHardwareDevice *i2c_device);
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uint32 (*dev_write) (struct I2cHardwareDevice *i2c_device, struct I2cDataStandard *msg);
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uint32 (*dev_read) (struct I2cHardwareDevice *i2c_device, struct I2cDataStandard *msg);
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};
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struct I2cHardwareDevice
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{
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struct HardwareDev haldev;
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const struct I2cDevDone *i2c_dev_done;
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void *private_data;
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};
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/*Register the I2C device*/
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int I2cDeviceRegister(struct I2cHardwareDevice *i2c_device, void *i2c_param, const char *device_name);
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/*Register the I2C device to the I2C bus*/
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int I2cDeviceAttachToBus(const char *dev_name, const char *bus_name);
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/*Find the register I2C device*/
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HardwareDevType I2cDeviceFind(const char *dev_name, enum DevType dev_type);
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#ifdef __cplusplus
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}
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#endif
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#endif
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