SparkFun Forums

[branchus]

Hi
Newbie here

I tried to work on the SDK with my Artemis ATP under fedora Linux, I got below message and said the COM port is open, I already tried to re-plug the usb cable, but doesn't help

sorry, seems I cannot post code block...
and I cannot post picture???

The error message in my gist
https://gist.github.com/branchus/61bda1 ... b2c954c762

Am I using the wrong device? But I can see if I unplug the board, the ttyUSB0 will disappear

Thanks

[TS-Chris]

Check the post in the link below and see if that fixes your issue.

viewtopic.php?f=163&t=50480&p=206258#p206258

[branchus]

Hi TS-Chris
Thank you for the reply, I followed the instruction and burn the latest bootloader. then I tried to upload again

still get error message, either port open or com port not found.

still cannot post message here. please refer to my gist, I also included the output of /dev/.
https://gist.github.com/branchus/61bda1 ... b2c954c762
please let me know which device I should try.

Thanks

[TS-Chris]

This sounds like some sort of issue in Linux, does the board work on a Windows PC?

[branchus]

I haven't tried the SDK under windows yet. but the board worked under windows with Arduino IDE...

I thought it might be driver issue, however the latest Linux driver cannot be compiled and installed on my Fedora 33 linux...

[paulvha]

an old error causing this is modem manager that needs to be disabled on some linux versions. You can check viewtopic.php?t=46710

[branchus]

Thank you Paul

I tried the solution in that thread by stopping the ModemManager, however, doens't seem to solve my issue, still has the same error message...

I did some research, seem the linux has the driver build in

lsmod | grep ch34
ch341 28672 0

I also listed all the usb device with their dev
I'm now sure ttyUSB0 is the board, just need to solve the device is already in use (port is already open) issue...

/dev/ttyUSB0 - 1a86_USB_Serial

[paulvha]

I remember it took me a long time to get the driver right for the CH341. The one that was with Ubuntu 1.20 did not work and after long searching I got it to work and even now it only works stable on 115K. I use the ASB for my ATP. I also have an edge-board and after a long pain with the CH341 I bought FTDI friend (as the EDGE does not have the CH341 -chip on the board). That worked in ONE go.. and runs 960000 without any problems with ASB all the time.

Running ls mode gives me :

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lsmod | grep ch34
ch340                  24576  0
ch341                  20480  0
usbserial              53248  2 ch340,ch341

[branchus]

I only got
lsmod | grep ch34
ch341 28672 0

but my board is Redboard Artemis ATP

I cannot install the latest Linux driver as it cannot be complied...

any other suggestions to get this sorted out?

Thanks

[paulvha]

I am not used to Fedora, but looking at the ASB source code (asb.py) around line 393, it does a:
print(dev.description)
add a line underneath that shows
print(dev.device)

It will at least which devices it finds and whether /dev/ttyUSB0 is one of them.

Else what error message did you get during compile of the driver?

Try removing the complete modemmanager : yum -y remove ModemManager

[branchus]

Thank you for the advice, I removed the ModemManager but still showing the below message

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/dev/ttyUSB0 is currently open. Please close any other terminal programs that may be using /dev/ttyUSB0 and try again.

If I use the asb, the output below, seems ttyUSB0 is not listed...

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Writing to file  ../gcc/redboard_artemis_atp/bin/startup_tests_Wired_OTA_blob.bin
Image from  0x0  to  0x2ddc  will be loaded at 0x20000
Connecting over serial port /dev/ttyUSB0...
Detected Serial Ports:
n/a
USB Serial
Com Port not found - Did you select the right one?

to compile the drive I got below message

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/home/bb/Downloads/ch341/ch34x.c:591:2: error: unknown type name ‘wait_queue_t’; did you mean ‘wait_event’?
  591 |  wait_queue_t wait;
      |  ^~~~~~~~~~~~
      |  wait_event
/home/bb/Downloads/ch341/ch34x.c:591:15: warning: unused variable ‘wait’ [-Wunused-variable]
  591 |  wait_queue_t wait;
      |               ^~~~
/home/bb/Downloads/ch341/ch34x.c:590:7: warning: unused variable ‘timeout’ [-Wunused-variable]
  590 |  long timeout;
      |       ^~~~~~~
/home/bb/Downloads/ch341/ch34x.c:589:6: warning: unused variable ‘bps’ [-Wunused-variable]
  589 |  int bps;
      |      ^~~
make[2]: *** [scripts/Makefile.build:279: /home/bb/Downloads/ch341/ch34x.o] Error 1
make[1]: *** [Makefile:1821: /home/bb/Downloads/ch341] Error 2
make[1]: Leaving directory '/usr/src/kernels/5.11.16-200.fc33.x86_64'
make: *** [Makefile:5: default] Error 2

[paulvha]

I had that as well and added : #include <linux/wait.h> BUT actually, you can comment out line 591 as wait is not used. You can also comment out 590 and 589 to remove the warnings.
Attached my version CH34x

[branchus]

Thank you paulvha

I added the header file, still cannot compile, I commented out line 591, compile successful and loaded fine

I can see I have one one device when I run lsmod

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lsmod | grep ch34
ch341                  28672  0
ch34x                  24576  0

but when I tried to upload through usb still get the same error message (ModemManager has been removed)
ttyUSB0 is current open ...