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How do I get debug log from the trainer port?

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02 Jul 2015 13:03 #34978 by payne.pan
How do I get debug log from the trainer port? was created by payne.pan
It is said that printf goes to the trainer port, I tried to connect Devo7e trainer port with FTDI usb-ttl, set rate as 115200 and only connect GND, TX and RX ( I don't know which is TX or RX, so I exchange them in my test), But nothing happened. later I found Devo7e usb-disk ruined, it is back to normal after I re-format it.

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02 Jul 2015 20:53 #35008 by PhracturedBlue
Replied by PhracturedBlue on topic How do I get debug log from the trainer port?
You need to compile with TYPE=dev to enable the printf. On a 7e, that will disable the standard-gui (due to space restrictions)

None of that should have anything to do with corrupting the filesystem though

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03 Jul 2015 00:34 #35015 by payne.pan
Replied by payne.pan on topic How do I get debug log from the trainer port?
Thanks for the answer.
So I modified lines in syscalls.c as below:
#define dbgprintf(args...) printf(args)
//#define dbgprintf(args...)

then make as "TYPE=dev", update my Tx using the new build dfu file.But I cannot get the log.
I attach the photo for the connection of trainer port and usb-ttl
Attachments:

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03 Jul 2015 11:55 #35052 by PhracturedBlue
Replied by PhracturedBlue on topic How do I get debug log from the trainer port?
did you do a 'make clean' 1st?
you do not need to enable dbgprintf unless you want a LOT of logging. The default wil still print a bunch of intialization when you power it up

Are you running the latest deviation? if not you need to run 'make distclean' 1st (latest deviation from source should recompile everything when you change the value of TYPE)

When in doubt reverse the rx and tx lines. I assume your usb-uart is 3.3V compliant? This should be very easy to make work. I've never used an ftdi, but I see no reason why it would be different than the CP2102 I use

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03 Jul 2015 14:52 #35056 by payne.pan
Replied by payne.pan on topic How do I get debug log from the trainer port?
Ya, I found the problem is in the connector I made, some pins on the audio slot is just for fixing, I re-soldered them and make sure it is right. Now I get the log!

Thank you very much for information and analysis.

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