Possible to determine which teensy board from bootloader?

[jamesportman]

Hi,

I have a custom program that knocks Teensy 4.1 into bootloader mode then programs it from a hex file.

Is there a way to detect which teensy I am connected to while in the bootloader?
There is a chance people will try to use it to program a teensy 4.0 which I don't want to happen.

I have seen the teensy loader CLI source code and a few bits of (out of date looking?) info on the website here;

Title

www.pjrc.com

Is there no other way to just ask what the CPU is or anything like that?

Thanks

 

[luni]

If your Teensy is already in bootloader mode you can read out the USB-HID usage constant with (probably) any HID library. The HID-Usage then defines the Board. See here for a list:

TeensySharp/src/libTeensySharp/Implementation/Teensy.cs at b7598bbeabb6ce3de5547489f381246c31b57586 · luni64/TeensySharp

C# library for finding Teensies on the USB tree and upload firmware to PJRC Teensy boards - luni64/TeensySharp

github.com

 

[jamesportman]

If your Teensy is already in bootloader mode you can read out the USB-HID usage constant with (probably) any HID library. The HID-Usage then defines the Board. See here for a list:

TeensySharp/src/libTeensySharp/Implementation/Teensy.cs at b7598bbeabb6ce3de5547489f381246c31b57586 · luni64/TeensySharp

C# library for finding Teensies on the USB tree and upload firmware to PJRC Teensy boards - luni64/TeensySharp

github.com

Thanks, that's perfect