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53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*
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* Copyright (c) 2006-2021, 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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* 2019-04-13 XiaojieFan the first version
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* 2019-12-04 RenMing Use PAGE WRITE instead of BYTE WRITE and input address can be selected
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*/
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#ifndef __AT24CXX_H__
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#define __AT24CXX_H__
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <board.h>
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#define AT24C01 0
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#define AT24C02 1
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#define AT24C04 2
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#define AT24C08 3
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#define AT24C16 4
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#define AT24C32 5
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#define AT24C64 6
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#define AT24C128 7
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#define AT24C256 8
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#define AT24C512 9
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#define AT24CTYPE 10 // Number of supported types
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#define EE_TWR 5
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#ifndef EE_TYPE
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#define EE_TYPE AT24C128
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#endif
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struct at24cxx_device
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{
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struct rt_i2c_bus_device *i2c;
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rt_mutex_t lock;
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uint8_t addr_input;
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};
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typedef struct at24cxx_device *at24cxx_device_t;
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extern at24cxx_device_t at24cxx_init(const char *i2c_bus_name, uint8_t addr_input);
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extern rt_err_t at24cxx_read(at24cxx_device_t dev, uint32_t r_addr, uint8_t *buffer, uint16_t num_r);
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extern rt_err_t at24cxx_write(at24cxx_device_t dev, uint32_t w_addr, uint8_t *buffer, uint16_t num_w);
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extern rt_err_t at24cxx_page_read(at24cxx_device_t dev, uint32_t r_addr, uint8_t *buffer, uint16_t num_r);
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extern rt_err_t at24cxx_page_write(at24cxx_device_t dev, uint32_t w_addr, uint8_t *buffer, uint16_t num_w);
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#endif
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