39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
#ifndef __I2CS_H__
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#define __I2CS_H__
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#include "lib.h"
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#include "gpios.h"
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typedef struct I2CS i2c_t;
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typedef struct
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{
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void (*start)(i2c_t *handle); // 启动
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void (*stop)(i2c_t *handle); // 停止
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BOOL(*wait_ack)
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(i2c_t *handle); // 等待应答
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void (*write_byte)(i2c_t *handle, uint8_t data); // 写入一个字节
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uint8_t (*read_byte)(i2c_t *handle, BOOL ack); // 读取一个字节
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void (*write_word)(i2c_t *handle, uint16_t data); // 写入二个字节
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void (*write_12bit)(i2c_t *handle, uint16_t data); // 写入12bit
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} i2c_interface_t;
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typedef struct
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{
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struct GPIO *scl; // SCL
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struct GPIO *sda; // SDA
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} i2c_gpio_group_t;
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struct I2CS
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{
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i2c_gpio_group_t gpios; // i2c引脚
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uint16_t delay_ticks; // 延时多少个NOP
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i2c_interface_t interface; // I2C接口
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};
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extern i2c_t *i2c_create(i2c_gpio_group_t gpios, uint16_t delay_ticks); // 创建I2C
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extern void i2c_free(i2c_t *handle); // 释放I2C资源
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#endif // __I2CS_H__
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