I'm using PCA9956B to controll 40pcs of RGB LEDs
I connect 5 of PCA9956B and gave the address(10h, 12h, 14h, 16h, 18h) to them.
then, 8 RGB LEDs is to be connected to each PCA9956B
(because PCA9956B is 24-channel controller, RGB LED has 3-pin)
When I send I2C messages to each addresses I can see the ACK signal on the I2C lines.
So I've tried to turn LEDs on, but it doesn't seem to be working well.
The first thing I've done is that pulling down the /OE pin to ground.
on the datasheet, It is nessesary to make LEDs turning on
then Initialized MODE1 register as default values for unexcepted situations
and change the registers such as LEDOUT, PWM, IREF..
But I can't see any LED lighting.
What I have to check or do I miss something to do here?
Thank for your assistance.