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77 lines
2.1 KiB
77 lines
2.1 KiB
6 years ago
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//
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// Created by MightyPork on 2018/01/02.
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//
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// I2C master unit
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//
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#ifndef GEX_F072_UNIT_I2C_H
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#define GEX_F072_UNIT_I2C_H
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#include "unit.h"
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extern const UnitDriver UNIT_I2C;
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// Unit-to-Unit API
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/**
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* Raw write to I2C
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*
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* @param unit - I2C unit
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* @param addr - device address (set highest bit if address is 10-bit)
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* @param bytes - bytes to write
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* @param bcount - byte count
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* @return success
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*/
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error_t UU_I2C_Write(Unit *unit, uint16_t addr, const uint8_t *bytes, uint32_t bcount);
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/**
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* Raw read from I2C
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*
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* @param unit - I2C unit
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* @param addr - device address (set highest bit if address is 10-bit)
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* @param dest - buffer for read bytes
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* @param bcount - byte count
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* @return success
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*/
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error_t UU_I2C_Read(Unit *unit, uint16_t addr, uint8_t *dest, uint32_t bcount);
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/**
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* Read one or more registers from a I2C register-based device with auto-increment.
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*
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* @param unit - I2C unit
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* @param addr - device address (set highest bit if address is 10-bit)
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* @param regnum - first register number
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* @param dest - destination buffer
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* @param width - register width (or multiple consecutive registers total size)
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* @return success
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*/
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error_t UU_I2C_ReadReg(Unit *unit, uint16_t addr, uint8_t regnum, uint8_t *dest, uint32_t width);
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/**
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* Write a register value
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*
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* @param unit - I2C unit
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* @param addr - device address (set highest bit if address is 10-bit)
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* @param regnum - register number
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* @param bytes - register bytes (use &byte) if just one
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* @param width - register width (number of bytes)
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* @return success
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*/
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error_t UU_I2C_WriteReg(Unit *unit, uint16_t addr, uint8_t regnum, const uint8_t *bytes, uint32_t width);
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/**
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* Write a 8-bit register value
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*
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* @param unit - I2C unit
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* @param addr - device address (set highest bit if address is 10-bit)
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* @param regnum - register number
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* @param value - byte to write to the register
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* @return success
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*/
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static inline error_t UU_I2C_WriteReg8(Unit *unit, uint16_t addr, uint8_t regnum, uint8_t value)
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{
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return UU_I2C_WriteReg(unit, addr, regnum, &value, 1);
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}
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#endif //GEX_F072_UNIT_I2C_H
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