mcp47xx.h File Reference

#include <stdbool.h>
#include <stdint.h>
#include "kernel_defines.h"
#include "periph/dac.h"
#include "periph/gpio.h"
#include "periph/i2c.h"

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Data Structures
struct	mcp47xx_params_t
	MCP47xx device configuration parameters. More...
struct	mcp47xx_t
	MCP47xx device data structure type. More...
struct	mcp47xx_saul_dac_params_t
	MCP47xx configuration structure for mapping DAC channels to SAUL. More...

Enumerations
enum	mcp47xx_error_codes_t { MCP47XX_OK , MCP47XX_ERROR_I2C , MCP47XX_ERROR_NOT_AVAIL }
	MCP47xx driver error codes. More...
enum	mcp47xx_variant_t {   MCP4706 , MCP4716 , MCP4725 , MCP4726 ,   MCP4728 }
	Supported MCP47xx variants. More...
enum	mcp47xx_gain_t { MCP47XX_GAIN_1X = 0 , MCP47XX_GAIN_2X = 1 }
	MCP47xx gain configuration type. More...
enum	mcp47xx_vref_t { MCP47XX_VREF_VDD = 0 , MCP47XX_VREF_INT = 1 , MCP47XX_VREF_PIN = 2 , MCP47XX_VREF_BUF = 3 }
	MCP47xx V_REF configuration type. More...
enum	mcp47xx_pd_mode_t { MCP47XX_NORMAL = 0 , MCP47XX_PD_SMALL = 1 , MCP47XX_PD_MEDIUM = 2 , MCP47XX_PD_LARGE = 3 }
	MCP47xx Power-down mode selection type. More...

Functions
int	mcp47xx_init (mcp47xx_t *dev, const mcp47xx_params_t *params)
	Initialize the MCP47xx DAC.
int	mcp47xx_dac_init (mcp47xx_t *dev, uint8_t chn)
	Initialize a MCP47xx DAC channel.
void	mcp47xx_dac_set (mcp47xx_t *dev, uint8_t chn, uint16_t value)
	Write a value to a MCP47xx DAC channel.
void	mcp47xx_dac_get (mcp47xx_t *dev, uint8_t chn, uint16_t *value)
	Get the current value of a MCP47xx DAC channel.
void	mcp47xx_dac_poweron (mcp47xx_t *dev, uint8_t chn)
	Enables the MCP47xx DAC device.
void	mcp47xx_dac_poweroff (mcp47xx_t *dev, uint8_t chn)
	Disables the MCP47xx DAC device.
uint8_t	mcp47xx_dac_channels (mcp47xx_t *dev)
	Returns the number of channels of MCP47xx DAC device.

MCP47xx I2C slave addresses
MCP47xx I2C slave addresses are defined as an offset to a base address, which depends on the expander used. The address offset is in the range of 0 to 7.
#define	MCP47XX_BASE_ADDR   (0x60)
	MCP47xx I2C slave base address.

MCP47xx Channel number
#define	MCP4706_CHN_NUM   (1)
	MCP4706 has 1 channel.
#define	MCP4716_CHN_NUM   (1)
	MCP4716 has 1 channel.
#define	MCP4725_CHN_NUM   (1)
	MCP4725 has 1 channel.
#define	MCP4726_CHN_NUM   (1)
	MCP4726 has 1 channel.
#define	MCP4728_CHN_NUM   (4)
	MCP4728 has 4 channels.
#define	MCP47XX_CHN_NUM_MAX   (4)
	maximum number of channels