PCA9685_proc.h File Reference

PCA9685 Driver procedures. More...

#include "sarmfsw.h"
#include "PCA9685.h"

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Data Structures
struct	PCA9685_t
	PCA9685 user interface struct. More...

Macros
#define	PCA9685_DEF_FREQ   500U
	Default frequency to affect to PCA9685 register (range from 24Hz to 1526Hz)
#define	PCA9685_MAX_CLOCK_FREQ   50000000UL
	PCA9685 Maximum external clock frequency.
#define	PCA9685_NB_CHANNELS   16U
	PCA9685 Number of channels.
#define	PCA9685_DEFAULT_SUB1_CALL_ADDR   (0xE2U >> 1U)
	PCA9685 SUB1 CALL Address.
#define	PCA9685_DEFAULT_SUB2_CALL_ADDR   (0xE4U >> 1U)
	PCA9685 SUB2 CALL Address.
#define	PCA9685_DEFAULT_SUB3_CALL_ADDR   (0xE8U >> 1U)
	PCA9685 SUB3 CALL Address.

Functions
FctERR	PCA9685_Init_Sequence (PCA9685_t *const pCpnt)
	Initialization Sequence for PCA9685 peripheral.
FctERR	PCA9685_Set_Clock_Freq (PCA9685_t *const pCpnt, const uint32_t freq)
	Sets external clock frequency.
uint32_t	PCA9685_Get_Clock_Freq (PCA9685_t *const pCpnt)
	Gets external clock frequency.

Variables
PCA9685_t	PCA9685 [I2C_PCA9685_NB]
	PCA9685 User structure.

Detailed Description

PCA9685 Driver procedures.

Author

SMFSW

Copyright

MIT (c) 2017-2026, SMFSW

PCA9685: 16-channel, 12-bit PWM Fm+ I2C-bus LED controller

Macro Definition Documentation

PCA9685_DEF_FREQ

#define PCA9685_DEF_FREQ   500U

Default frequency to affect to PCA9685 register (range from 24Hz to 1526Hz)

PCA9685_DEFAULT_SUB1_CALL_ADDR

#define PCA9685_DEFAULT_SUB1_CALL_ADDR   (0xE2U >> 1U)

PCA9685 SUB1 CALL Address.

PCA9685_DEFAULT_SUB2_CALL_ADDR

#define PCA9685_DEFAULT_SUB2_CALL_ADDR   (0xE4U >> 1U)

PCA9685 SUB2 CALL Address.

PCA9685_DEFAULT_SUB3_CALL_ADDR

#define PCA9685_DEFAULT_SUB3_CALL_ADDR   (0xE8U >> 1U)

PCA9685 SUB3 CALL Address.

PCA9685_MAX_CLOCK_FREQ

#define PCA9685_MAX_CLOCK_FREQ   50000000UL

PCA9685 Maximum external clock frequency.

PCA9685_NB_CHANNELS

#define PCA9685_NB_CHANNELS   16U

PCA9685 Number of channels.

Function Documentation

PCA9685_Get_Clock_Freq()

uint32_t PCA9685_Get_Clock_Freq ( PCA9685_t *const pCpnt )

inline

Gets external clock frequency.

Parameters

[in]

pCpnt

- Pointer to PCA9685 component

Returns

Internal clock frequency

PCA9685_Init_Sequence()

FctERR PCA9685_Init_Sequence

(

PCA9685_t *const

pCpnt

)

Initialization Sequence for PCA9685 peripheral.

Weak Functions

PCA9685 Init sequence may be user implemented if custom initialization sequence needed

Parameters

[in]

pCpnt

- Pointer to PCA9685 component

Returns

FctERR - ErrorCode

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PCA9685_Set_Clock_Freq()

FctERR PCA9685_Set_Clock_Freq	(	PCA9685_t *const	pCpnt,
		const uint32_t	freq )

Sets external clock frequency.

Parameters

[in,out]	pCpnt	- Pointer to PCA9685 component
[in]	freq	- External clock frequency in Hz

Returns

FctERR - ErrorCode

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Variable Documentation

PCA9685

PCA9685_t PCA9685[I2C_PCA9685_NB]

extern

PCA9685 User structure.