PCA9956_proc.c File Reference

PCA9956 Driver procedures. More...

#include "PCA9956.h"
#include <math.h>

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Functions
FctERR	PCA9956_Init_Sequence (PCA9956_t *const pCpnt)
	Initialization Sequence for PCA9956 peripheral.
FctERR	PCA9956_calc_IREF (uint8_t *const pIREF, const float Rext, const float current)
	Compute IREF for PCA9956 peripheral.

Variables
PCA9956_t	PCA9956 [I2C_PCA9956_NB] = { 0 }
	PCA9956 User structure.

Detailed Description

PCA9956 Driver procedures.

Author

SMFSW

Copyright

MIT (c) 2017-2026, SMFSW

PCA9956: 24-channel Fm+ I2C-bus 57 mA/20 V constant current LED driver

Function Documentation

PCA9956_calc_IREF()

FctERR PCA9956_calc_IREF	(	uint8_t *const	pIREF,
		const float	Rext,
		const float	current )

Compute IREF for PCA9956 peripheral.

Parameters

[in,out]	pIREF	- Pointer to IREF result
[in]	Rext	- Rext value (in KOhm)
[in]	current	- Target current (in mA)

Returns

FctERR - ErrorCode (in case of IREF value overflow)

PCA9956_Init_Sequence()

FctERR PCA9956_Init_Sequence

(

PCA9956_t *const

pCpnt

)

Initialization Sequence for PCA9956 peripheral.

Weak Functions

PCA9956 Init sequence may be user implemented if custom initialization sequence needed

Parameters

[in]

pCpnt

- Pointer to PCA9956 component

Returns

FctERR - ErrorCode

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Variable Documentation

PCA9956

PCA9956_t PCA9956[I2C_PCA9956_NB] = { 0 }

PCA9956 User structure.