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Now that I have it working I will post a simple example of utilizing the PWM features on the PCA9532. Thanks. Also added an updated (and correct schematic) for anyone that wants to test out this 16...

I got it working! The chip is in a SO24 package so I had to use a SMD to breadboard adapter, which was apparently faulty... Anyways there was no problem with my code, so it all works now! Thanks.

Thanks for the reply! I added both of your ideas to my code, but I still cannot receive an acknowledge from the PCA9532. When I look at my scoped output and the datasheet, it looks like it should...

Here is my new code and a shot of my oscilloscope to show the output. I can see that I'm not getting an acknowledge, but I do not know why.


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Lol, that's what happens when I draw a schematic in a hurry. Thanks for noticing. The leds are wired correctly on my breadboard though. I just can't get any response from the PCA9532. I've scoped the...

I've drawn a schematic of my test setup for reference. Let me know if anything doesn't look right. Thanks!

Hi everybody,
I am attempting to interface a PIC16F887 with a PCA9532 LED driver. I've read the PCA9532 datasheet http://www.nxp.com/documents/data_sheet/PCA9532.pdf and I am trying to follow the...