MotoHawk PCA9745B Global Set

The PCA9745B is a device that can drive up to 16 individual LEDs with constant current. This block configures parameters on the device which affect all connected LEDs.

Refer to the PCA9745B device datasheet for detailed explanation of parameters.

Block ID

PCA9745B Global Set

Library

motohawk_PCA9745B_lib

Description

Block Inputs

Input Name	Values	Comments/Description
Global Current Gain	uint8 [0-255], % ref curr	IREFALL, Shortcut for setting all IREFx registers in one SPI transfer
Global Brightness	uint8 [0-255], %	PWMALL, Shortcut for setting all PWMx regiseters in one SPI transfer
Group Blink Freq	uint8 [0-255]	GRPFREQ, only applicable when DMBLNK=1
Group Brightness/Blink DC	uint8 [0-255], %	GRPPWM, either brightness control or blink duty cycle depending on DMBLNK
Channel Offset	uint8 [0-15], multiple of 125 ns	OFFSET, channel to channel turn on delay
Global Blink Enable	bool	DMBLNK, enables global blink pattern
Error Reset	bool	CLRERR, clears all faults latched in the device
Gradation Exponential Adjustment	bool	EXP_EN, chooses an exponential adjustment, rather than linear

Note: An LED chooses to join the Global Group Blink Pattern by setting its LED Mode input (LEDOUTx) to 3. The enum motohawk_PCA9745B_led_mode_enum labels this value "LED_GROUP."

Block Parameters

Parameter Field	Values	Comments/Description
Reference Name	Alpha-numeric text, single quote enclosed	Name references PCA9745B Definition block.