NCA9595.c File Reference

NCA9595 Driver. More...

#include "NCA9595.h"

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Functions
FctERR	NCA9595_Init (const uint8_t idx, I2C_HandleTypeDef *const hi2c, const uint16_t devAddress)
	Initialization for NCA9595 peripheral.
FctERR	NCA9595_Init_Single (void)
	Initialization for NCA9595 peripheral.
FctERR	NCA9595_Write_Word (I2C_slave_t *const pSlave, const uint16_t *data, const uint16_t addr)
	I2C Write function for NCA9595.
FctERR	NCA9595_Read_Word (I2C_slave_t *const pSlave, uint16_t *data, const uint16_t addr)
	I2C Read function for NCA9595.

Detailed Description

NCA9595 Driver.

Author

SMFSW

Copyright

MIT (c) 2017-2026, SMFSW

NCA9595: Low-voltage 16-bit I²C and SMBus I/O expander

Function Documentation

NCA9595_Init()

FctERR NCA9595_Init	(	const uint8_t	idx,
		I2C_HandleTypeDef *const	hi2c,
		const uint16_t	devAddress )

Initialization for NCA9595 peripheral.

Parameters

[in]	idx	- NCA9595 index
[in]	hi2c	- pointer to NCA9595 I2C instance
[in]	devAddress	- NCA9595 device address

Returns

FctERR - error code

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NCA9595_Init_Single()

FctERR NCA9595_Init_Single

(

void

)

Initialization for NCA9595 peripheral.

Warning

In case multiple devices (defined by I2C_NCA9595_NB > 1), you shall use NCA9595_Init instead

Returns

FctERR - error code

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NCA9595_Read_Word()

FctERR NCA9595_Read_Word	(	I2C_slave_t *const	pSlave,
		uint16_t *	data,
		const uint16_t	addr )

I2C Read function for NCA9595.

Note

Reads 8bits register pair (address shall be even for little endian / odd for big endian)

Parameters

[in,out]	pSlave	- Pointer to I2C slave instance
[in,out]	data	- pointer to read to
[in]	addr	- Address to read from

Returns

FctERR - error code

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NCA9595_Write_Word()

FctERR NCA9595_Write_Word	(	I2C_slave_t *const	pSlave,
		const uint16_t *	data,
		const uint16_t	addr )

I2C Write function for NCA9595.

Note

Writes 8bits register pair (address shall be even for little endian / odd for big endian)

Parameters

[in,out]	pSlave	- Pointer to I2C slave instance
[in]	data	- pointer to write from
[in]	addr	- Address to write to

Returns

FctERR - error code

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