MCP4725.h File Reference

MCP4725 Driver. More...

#include "sarmfsw.h"
#include "I2C_component.h"
#include "I2C_peripheral.h"
#include "MCP4725_proc.h"
#include "MCP4725_ex.h"

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Data Structures
union	uMCP4725_REG__CMD
	Union for CMD of MCP4725. More...

Macros
#define	I2C_MCP4725_NB   1U
	Number of MCP4725 peripherals.
#define	MCP4725A0_ADDR   0x60U
	MCP4725 address.
#define	MCP4725A1_ADDR   0x62U
	MCP4725 with A1 address.
#define	MCP4725A2_ADDR   0x64U
	MCP4725 with A2 address.
#define	MCP4725_BASE_ADDR   MCP4725A1_ADDR
	MCP4725 Base address.

Enumerations
enum	MCP4725_cmd {   MCP4725__FAST_MODE = 0U , MCP4725__WRITE_DAC = 2U , MCP4725__WRITE_DAC_EEP , MCP4725__RESERVED_1 ,   MCP4725__RESERVED_2 , MCP4725__RESERVED_3 , MCP4725__RESERVED_4 }
	Register map enum of MCP4725. More...
enum	MCP4725_pd { MCP4725__PWR_NORMAL = 0U , MCP4725__PWR_DOWN_1K , MCP4725__PWR_DOWN_100K , MCP4725__PWR_DOWN_500K }
	Power down enum of MCP4725. More...

Functions
FctERR	MCP4725_Init (const uint8_t idx, I2C_HandleTypeDef *const hi2c, const uint16_t devAddress)
	Initialization of the MCP4725 peripheral.
FctERR	MCP4725_Init_Single (void)
	Initialization for MCP4725 peripheral.
FctERR	MCP4725_General_Call (I2C_HandleTypeDef *const hi2c, const uint8_t cmd)
	I2C general call for MCP4725.
FctERR	MCP4725_Write (I2C_slave_t *const pSlave, const uint8_t *data, const uint16_t nb)
	I2C Write function for MCP4725.
FctERR	MCP4725_Read (I2C_slave_t *const pSlave, uint8_t *data, const uint16_t nb)
	I2C Read function for MCP4725.

Detailed Description

MCP4725 Driver.

Author

SMFSW

Copyright

MIT (c) 2017-2026, SMFSW

MCP4725: 12-Bit Digital-to-Analog Converter with EEPROM Memory

Macro Definition Documentation

I2C_MCP4725_NB

#define I2C_MCP4725_NB   1U

Number of MCP4725 peripherals.

Note

Define I2C_MCP4725_NB to enable multiple peripherals of this type

MCP4725_BASE_ADDR

#define MCP4725_BASE_ADDR   MCP4725A1_ADDR

MCP4725 Base address.

Note

Define MCP4725_BASE_ADDR to change default device base address

MCP4725A0_ADDR

#define MCP4725A0_ADDR   0x60U

MCP4725 address.

MCP4725A1_ADDR

#define MCP4725A1_ADDR   0x62U

MCP4725 with A1 address.

MCP4725A2_ADDR

#define MCP4725A2_ADDR   0x64U

MCP4725 with A2 address.

Enumeration Type Documentation

MCP4725_cmd

enum MCP4725_cmd

Register map enum of MCP4725.

Enumerator
MCP4725__FAST_MODE	This command is used to change the DAC register. EEPROM is not affected.
MCP4725__WRITE_DAC	Load configuration bits and data code to the DAC Register.
MCP4725__WRITE_DAC_EEP	Load configuration bits and data code to the DAC Register and also write the EEPROM.
MCP4725__RESERVED_1	Reserved for future use.
MCP4725__RESERVED_2	Reserved for future use.
MCP4725__RESERVED_3	Reserved for future use.
MCP4725__RESERVED_4	Reserved for future use.

MCP4725_pd

enum MCP4725_pd

Power down enum of MCP4725.

Enumerator
MCP4725__PWR_NORMAL	Normal mode.
MCP4725__PWR_DOWN_1K	1K Ohm resistor to ground
MCP4725__PWR_DOWN_100K	100K Ohm resistor to ground
MCP4725__PWR_DOWN_500K	500K Ohm resistor to ground

Function Documentation

MCP4725_General_Call()

FctERR MCP4725_General_Call	(	I2C_HandleTypeDef *const	hi2c,
		const uint8_t	cmd )

I2C general call for MCP4725.

Parameters

[in]	hi2c	- pointer to general call I2C instance
[in]	cmd	- Command to send

Returns

FctERR - error code

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MCP4725_Init()

FctERR MCP4725_Init	(	const uint8_t	idx,
		I2C_HandleTypeDef *const	hi2c,
		const uint16_t	devAddress )

Initialization of the MCP4725 peripheral.

Parameters

[in]	idx	- MCP4725 index
[in]	hi2c	- pointer to MCP4725 I2C instance
[in]	devAddress	- MCP4725 device address

Returns

FctERR - error code

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MCP4725_Init_Single()

FctERR MCP4725_Init_Single

(

void

)

Initialization for MCP4725 peripheral.

Warning

In case multiple devices (defined by I2C_MCP4725_NB > 1), you shall use MCP4725_Init instead

Returns

FctERR - error code

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MCP4725_Read()

FctERR MCP4725_Read	(	I2C_slave_t *const	pSlave,
		uint8_t *	data,
		const uint16_t	nb )

I2C Read function for MCP4725.

Parameters

[in,out]	pSlave	- Pointer to I2C slave instance
[in,out]	data	- pointer to read to
[in]	nb	- Number of bytes to read

Returns

FctERR - error code

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MCP4725_Write()

FctERR MCP4725_Write	(	I2C_slave_t *const	pSlave,
		const uint8_t *	data,
		const uint16_t	nb )

I2C Write function for MCP4725.

Parameters

[in,out]	pSlave	- Pointer to I2C slave instance
[in]	data	- pointer to write from
[in]	nb	- Number of bytes to write

Returns

FctERR - error code

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