32F429IDISCOVERY Pinout / Free IO

sultanof · ‎2014-04-16

Posted on April 16, 2014 at 10:11

Hello

The

http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/PF259090

has a few Free I/O Pins. Is there a list of alternate functions of those pins? It's not mentioned in the corresponding documentation DocID025175 Rev 1

I'm trying to evaluate whether the few I/O Pins are suitable for me or not.

Regards

Chriostoph

Tesla DeLorean · ‎2014-04-21

Posted on April 21, 2014 at 21:13

Are you sure it is correctly orientated? ie Rotated with respect to Pin 1?

Attach a picture (use macro setting, have it focused)

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nawfal3 · ‎2014-04-21

Posted on April 21, 2014 at 21:23

Here it is.

________________

Attachments :

2014-04-21_20.18.52.jpg : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I041&d=%2Fa%2F0X0000000bTJ%2FUMpvuiIqaqSO1nAy7FlBJLBrJbYCN7zQEkY7b4gVH5Y&asPdf=false

Tesla DeLorean · ‎2014-04-21

Posted on April 21, 2014 at 21:35

Yes, so you've got the orientation wrong

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nawfal3 · ‎2014-04-21

Posted on April 21, 2014 at 21:58

Thank you..It worked .... I was confused by the logo orientation on STM32CubeMx...I didn't see the circle markation... Thank you again

nawfal3 · ‎2014-04-22

Posted on April 22, 2014 at 13:45

I have made many successfull tests programming the chip either from em::blocks or from STM32 ST-LINK Utility (V2.J19.SO)... The problem that I have is that when I connect to the chip via STM32 ST-LINK Utility the application recognize the chip by giving the ID but it is no more able to erase it or program it....Same thing with em::blocks. (I am using SWD) Under Windows7

gbarbour · ‎2014-04-22

Posted on April 23, 2014 at 05:18

Thank you Christoph for making that information available. I found your spreadsheet very helpful.

gbarbour · ‎2014-04-30

Posted on May 01, 2014 at 00:40

OOPS, Christof,

I think you may have missed four pins.

PA7, PB2, PC14, & PC15.

Tesla DeLorean · ‎2014-04-30

Posted on May 01, 2014 at 01:37

PC14/PC15 are typically used for the 32.768 KHz crystal, they are in the low/backup power domain, and can only sink 3mA. Use them as GPIO with caution.

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gbarbour · ‎2014-04-30

Posted on May 01, 2014 at 03:30

Thank you very much for that advice. I was not aware of that.