Build for OSX with libusb-compat from homebrew to have a working soft reboot?

[mgcrea]

I've rebuild https://github.com/PaulStoffregen/teensy_loader_cli with libusb-compat from homebrew and the soft reboot is working on OSX.

For now I manually replace the teensy_loader_cli with my version. Maybe it should be the default as it's super useful?

[ivankravets]

Could you share somewhere a final binary? I’ll update packages

[mgcrea]

Here is the binary, probably need to brew install libusb-compat first though (not sure). If required, it might break people uploads if they don't have the package.

teensy_loader_cli.zip

update yep it's required:

$ ./teensy_loader_cli --mcu=mk20dx256 -s ./firmware.hex 
dyld: Library not loaded: /usr/local/opt/libusb-compat/lib/libusb-0.1.4.dylib
  Referenced from: /Users/olivier/Developer/teensy/teensy_loader_cli/./teensy_loader_cli
  Reason: image not found
Abort trap: 6

maybe bundle this lib libusb-0.1.4.dylib along the cli? (not sure if enough)

[ivankravets]

Are you sure that previous version does not work? I remember that we tested it with @PaulStoffregen and it worked.

[PaulStoffregen]

Here's a copy compiled on Ubuntu 14.04 (x86 64 bit) with this command to statically link libusb-0.1.4.

gcc -O2 -Wall  -s -DUSE_LIBUSB -o teensy_loader_cli teensy_loader_cli.c /usr/lib/x86_64-linux-gnu/libusb.a

https://www.pjrc.com/teensy/beta/teensy_loader_cli

[PaulStoffregen]

But that's Linux. For Macintosh OSX you should not need libusb at all. I wrote the Mac version using native OSX IOkit & CoreFoundation APIs.

[mgcrea]

@PaulStoffregen looks like libusb builds enable soft reboot to work on OSX which is really super useful.

@ivankravets I can confirm that the existing teensy_loader_cli bundled with platformio does not have a working soft reboot (as it's probably built against IOkit):

• with teensy_loader_cli.bak being the shipped version and teensy_loader_cli being my build:

$ ~/.platformio/packages/tool-teensy/teensy_loader_cli -v -s --mcu=mk20dx256 .pioenvs/teensy31/firmware.hex 
Teensy Loader, Command Line, Version 2.1
Read ".pioenvs/teensy31/firmware.hex": 46536 bytes, 17.8% usage
Soft reboot performed
Waiting for Teensy device...
 (hint: press the reset button)
Found HalfKay Bootloader
Read ".pioenvs/teensy31/firmware.hex": 46536 bytes, 17.8% usage
Programming..............................................
Booting

$ ~/.platformio/packages/tool-teensy/teensy_loader_cli.bak -v -s --mcu=mk20dx256 .pioenvs/teensy31/firmware.hex 
Teensy Loader, Command Line, Version 2.1
Read ".pioenvs/teensy31/firmware.hex": 46536 bytes, 17.8% usage
Soft reboot is not implemented for OSX
Waiting for Teensy device...
 (hint: press the reset button)
^C

$ sha1sum ~/.platformio/packages/tool-teensy/teensy_loader_cli.bak
8742c8fe1930f271d75329f7a544918f10759fe3  /Users/olivier/.platformio/packages/tool-teensy/teensy_loader_cli.bak