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Topic: How to Use expanded I/O to communicate with some bus devices (TM1637 for ex.) (Read 96 times) previous topic - next topic

ROUGEXIII

Hello.

On my little arduino board I have already used all my I/Os for several bus connections.
But I have a lot I/Os more through some port expanders (PCF8574P).

I want to add a TM1637 based 7 segments display and would know if it's possible to use it through the I/Os from the port expander.

My I/Os on my PCF8574P work great but I don't know how to use it as with the arduino pins with the TM1637 librarie. Is it possible?


Thank you for reading (sorry for my english...)

CrossRoads

http://wiki.seeed.cc/Grove-4-Digit_Display/
Looks like some kind of serial interface using 1 signal wire.
Any way to swap with another pin and make life easier on yourself?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

ROUGEXIII

http://wiki.seeed.cc/Grove-4-Digit_Display/
Looks like some kind of serial interface using 1 signal wire.
Any way to swap with another pin and make life easier on yourself?
Thank you for the answer but my question was how to use bus devices on extended I/Os.
Do you know if there is a way to use the extended I/O as classic I/Os?
I don't find how to use the TM1637 libraries (or any bus device) with extended I/Os.

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