PCA9554 IO Expansion

G McMurry

OK -- I just discovered there is no advanced search on the new forum.  Now, that's a great idea someone had.

So, I am forced to ask a question that is probably already answered somewhere on the forum.  For this, I am sorry.

Has anyone interfaced the I2C based PCA9554 IO expansion device to a Basic Stamp?  I designed a nice 8 channel relay board for a Propeller project that uses this interface and would now like to add it to one of my Basic Stamp systems.

Speed is not an issue, I just need to decode and operate some power relays with one of my Basic Stamp boards in an existing system.

Thanks!

Greg

tomcrawford

Here is a pointer to a thread that has some pointers that may be useful.  Found it by googling "stamp pca9554".
Edit: PCA9554 vs. PCF8574 remote i/o i2c expanders

G McMurry

Interesting thread but not quite to the point...  I just need some sample code writing to the PCA9554.

Please

Greg