STM CircleOS forum / Extension Board GPIO

matze_bo · 2009-06-15 15:45:00

I have a Question about the Extension Board (Primer 2), I need only Digital Outputs (GPIO) can anyone tell me how many GPIO's are located on the extension Board?

Francis · 2009-06-15 16:00:16

16 GPIOs (all have alternate functions but they can be used as standard GPIOs).

matze_bo · 2009-06-15 16:18:07

First thank you, but there are 2 Pins CX_CANL and CX_CANLH which are not directly (MAX3051) connected to the µC, so am I right that i can't use them as GPIO?

Francis · 2009-06-15 16:34:34

Ooops... You are right! 16-2 = 14.
In future versions, we will allow to shortcut the transceiver with a jumper in order to keep them available as GPIO.

matze_bo · 2009-06-15 18:19:58

OK, Thanks for the fast respond!

# 1 2009-06-15 15:45:00 Extension Board GPIO

Extension Board GPIO

# 2 2009-06-15 16:00:16 Extension Board GPIO

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# 3 2009-06-15 16:18:07 Extension Board GPIO

Re: Extension Board GPIO

# 4 2009-06-15 16:34:34 Extension Board GPIO

Re: Extension Board GPIO

# 5 2009-06-15 18:19:58 Extension Board GPIO

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