MicroPython Forum (Archive)

I am having trouble getting started with upython on my teensy 4.1. I can connect to it and use the repl in either rshell or using the command:
mpremote connect /dev/tty.usbmodem14401

But I don't know how to copy a python script onto it. If I try

mpremote mount .

it hangs forever. If I do a keyboard interrupt to get out of the infinite hang up, this is the traceback:

^CTraceback (most recent call last):
File "/usr/local/bin/mpremote", line 8, in <module>
sys.exit(main())
File "/usr/local/lib/python3.9/site-packages/mpremote/main.py", line 468, in main
pyb.enter_raw_repl()
File "/usr/local/lib/python3.9/site-packages/mpremote/pyboard.py", line 337, in enter_raw_repl
data = self.read_until(1, b"raw REPL; CTRL-B to exit\r\n>")
File "/usr/local/lib/python3.9/site-packages/mpremote/pyboard.py", line 303, in read_until
data = self.serial.read(min_num_bytes)
File "/usr/local/lib/python3.9/site-packages/serial/serialposix.py", line 565, in read
ready, _, _ = select.select([self.fd, self.pipe_abort_read_r], [], [], timeout.time_left())
KeyboardInterrupt

As I read that, it looks like it is trying to wait for a response, but not getting the response it expects.

Any suggestions on how to copy a *.py file to a teensy 4.1 running upython?

Thanks,
Ryan

Not sure if this is related to my problem or not, but if I try mpremote without any arguments, I get this response:

$mpremote
Connected to MicroPython at /dev/cu.Bluetooth-Incoming-Port

So, the default device is not my teensy (/dev/cu.usbmodem14401 or /dev/tty.usbmodem14401). So, if I try to do "mpremote mount ." but cannot specify a device, is it trying the Bluetooth port?

So, I can copy code using rshell. So that solves my immediate issue. Not sure why mpremote doesn't work for me, but I am guessing rshell is able to find the correct port while I suspect that mpremote does not.

You can specify the proper port with mpremote:

mpremote connect <port_name> mount .

Try mpremote --help for some usage hints.

mpremote --help doesn't work on my version. I installed from pip.

I really did try to find a way to combined the proper port with the mount command, but I only tried to pass the portname as an extra parameter to mount; I never tried connect and mount in the same command.

Your command works perfectly.

Thanks again,
Ryan

You can get the most recent mpremote version directly from the micropython repository at https://github.com/micropython/micropyt ... s/mpremote

ryanGT wrote: ↑

Fri Mar 04, 2022 10:12 pm

Not sure if this is related to my problem or not, but if I try mpremote without any arguments, I get this response:

$mpremote
Connected to MicroPython at /dev/cu.Bluetooth-Incoming-Port

So, the default device is not my teensy (/dev/cu.usbmodem14401 or /dev/tty.usbmodem14401). So, if I try to do "mpremote mount ." but cannot specify a device, is it trying the Bluetooth port?

I'm getting the same behavior (on a Mac). Is there any simple way to tell mpremote to ignore this port (obviously not a micropython board)? The promise of autoconnecting to several boards using just the "mpremote" command sounds great.

You should be able to write:

mpremote connect /dev/cu.usbmodem14401 mount .

or whatever the port name is.

We should definitely improve the port-autodetection on macOS. (Someone with a Mac, please send a PR if possible! )

We definitely need to improve the documentation about the way the command chaining works.

The other option is to add an alias to the mpremote config file (e.g. ~/.config/mpremote/config.py). Is the numeric part of /dev/tty.usbmodem14401 constant or does it change every time you plug the same device in?