I’m trying to interface a Digi connect module to a SPI bus, in using the sample code that is in the examples tree. I’m able to compile and run the code but i can’t see any activity on GPIO pins.
Can Digi connect ME be used as SPI master?
What is the mapping of GPIO pins and PORTB?
Where can I find some real examples?
Thanks in advance,
Márcio
Digi Connect ME documentation:
http://www.digi.com/support/productdetail?pid=2466&type=documentation
Digi Connect ME HRM (7520 based only):
http://ftp1.digi.com/support/documentation/90000631_G.pdf
>Can Digi connect ME be used as SPI master?
I’m afraid not. You’d have to check, see below.
What is the mapping of GPIO pins and PORTB?
See page 31 of HRM mentioned above - looks like only some Port A and Port C pins are available.
NS7520 HRM is here:
http://ftp1.digi.com/support/documentation/90000353_G.pdf
check all GPIOs from page 31 at pinout section page 22 to see if they can be used as SPI. Looks like SPI CLK will be missing
Where can I find some real examples?
C:
etos75\src\examples
aspi_extern\
this will work on NS7520 based design if you have GPIOs available , which might not be the case for Connect ME.
Please consider Connect ME 9210 - it can have SPI along as many other additional functionality