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PaulStoffregen / teensy_loader_cli

Command line Teensy Loader
http://www.pjrc.com/teensy/loader_cli.html
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Unable to flash Teensy LC #9

Closed expipiplus1 closed 7 years ago

expipiplus1 commented 9 years ago

I have a new Teensy 3.1 and a Teensy LC. I'm able to flash the Teensy 3.1 with teensy_loader_cli without a problem, however I've had no success in flashing the Teensy LC.

Just to make sure, here's what I'm running:

For the Teensy 3.1: sudo ./teensy_loader_cli --mcu=mk20dx256 -w -v blink_slow_Teensy31.hex For the Teensy LC: sudo ./teensy_loader_cli --mcu=mkl26z64 -w -v blink_slow_TeensyLC.hex

When trying to flash the LC, usb_control_msg returns -32 (EPIPE) in teensy_write. I tried this from three linux installations (Ubuntu 14.10, Ubuntu 15.04 and NixOS) with identical results.

I am able to use Teensyduino on linux to flash both boards. I am able to use the graphical teensy loader on OSX to flash both boards. It's just the cli loader which fails on linux for the LC board.

I'm more than happy to provide you with any more information. How would be best for me to proceed in debugging this? Is there a specification for programming the teensy boards?

des09 commented 9 years ago

I am experiencing the same issue. I have tried teensy loader 1.21 and 1.24. I am using a brand new teensy LC, It doesn't show up in lsusb output, nothing in dmesg.

PaulStoffregen commented 9 years ago

I've committed a fix. Please try the latest code and let me know if it works for you?