perpetual bootloader mode everytime I want to upload

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perpetual bootloader mode everytime I want to upload

(8 posts) (5 voices)

Started 3 years ago by
Latest reply from mbolivar

Anonymous
Unregistered
I'm on Mac OS Mountain Lion and I have to put the board into perpetual bootloader mode every time I want to upload a new build. I'm using command line and this happens with the example that's part of the command line doc. when running "make install" after I have already uploaded a program I get this
```
Install target: flash
/Users/jbluepolarbear/libmaple/support/scripts/reset.py && sleep 1                  && dfu-util -a1 -d 1EAF:0003 -D build/maple.bin -R
Using /dev/tty.usbmodemfd131 as Maple serial port
dfu-util - (C) 2007 by OpenMoko Inc.
This program is Free Software and has ABSOLUTELY NO WARRANTY

No DFU capable USB device found
make: *** [install] Error 1
```
I tried it in the IDE and it can reset the board from there without have to set it into perpetual bootloader mode.

Any ideas?
Posted 3 years ago #
asterix
Member

I've sometimes run into this problem in various situations. More so when powering external devices off maple mini's vcc or if there are other peripherals attached to GPIO pins. If you've got an external source plugged in, remove the ViN connection before attaching the usb cable.

Posted 3 years ago #
asterix
Member

Sorry, just read it works in the IDE :/ . You can also manually hit the reset button to force an upload.

Posted 3 years ago #
Anonymous
Unregistered

The issue that I'm having is that I have to manually reset it every time I want to upload. If I use the IDE, I don't have to reset the board every time. If I connect to the board with the IDE serial it will allow me to upload to the board again. I am able to connect serially to the board, but I can not reset it from serial.

I have the rev 3+.

Posted 3 years ago #
Anonymous
Unregistered
I don't know what was causing the problem, but I have managed to get it to reset it over serial. I changed the
```
ser.write("1EAF".encode("ascii"))
 time.sleep(0.01)
```
in the reset.py to
```
ser.write("1EAF".encode("ascii"))
 time.sleep(0.1)
```
changing the time to sleep to 0.1 seconds is allowing me to reset and upload will the board is running.
Posted 3 years ago #
Anonymous
Unregistered

Awesome, thanks! I was running into the same issue periodically and this helped.

I still have issues with the IDE reset only working half the time. I wonder if there is a fix for the IDE that is similar.

Posted 3 years ago #
sam
Member

I am on a MAC and I found using a ser.flush() (after the ser.write("1EAF") made it work reliably for me. I believe that insures that the characters are sent out before the close.

Posted 3 years ago #
mbolivar
LeafLabs

I've combined these fixups into a patch to reset.py:

https://github.com/leaflabs/libmaple/commit/82500d78136fe9c42177d7df712cd202d285971d

Please let me know if it fixes the issue for you.

Posted 3 years ago #

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