Improved Leonardo bootloader

[Lauszus]

The power-on reset detection didn't work properly, but has now been fixed.
With the original firmware my board always ran the bootloader. But the updated version works perfectly. The upload process (without needing to press the reset button) also works as intended.

The .hex file is compiled using the version of LUFA as originally used ("LUFA 111009").
The VID and PID are the same as the original ones, as defined in the the makefile:

USB vendor ID (VID)

official Arduino LLC VID

VID = 0x2341

USB product ID (PID)

official Leonardo PID

PID = 0x0036

[Lauszus]

Sorry to bother you, but why hasn't this been merged yet?
I'm okay if you want to compile the .hex file yourself, but I think a lot of people will miss the auto-rest functionality like this guy: http://www.sparkfun.com/products/11286#comment-4fd2c8bace395f680e000000
Or is it only a few that is having this issue?

[sarfata]

I agree with Lauszus that this bugfix should be merged in upstream. I just spent 3 hours debugging the same problem and with the same fix. It works.

[danderso]

Was the fix to properly sense the power on reset, made in the bootloader code or elsewhere. If it was in a change to the bootloader can you please send me a link to the fixed code.

[sarfata]

The fix is in the bootloader (Caterina.c). It is in Lauszus pull-request in : 692de00 (scroll to the bottom of the page to see the source code diff).

thomas

[danderso]

Thanks I see the difference. Rather than recompile (and get all the dependancies) is there a place I can easily download the new Caterina-Leonardo.hex ?

[danderso]

Please disregard my last, got the .hex file from the post, thanks.

[Lauszus]

Since I deleted the files by mistake I have now created a new pull request: #118

[danderso]

Thanks, I got a reply from Thomas Sarlandie who pointed me to the fix
and the source & instead of ==.

I downloaded your .hex and burned it, it works perfectly now, thank you.

On 12-09-30 08:37 PM, Kristian Lauszus wrote:

Since I deleted the files by mistake I have now created a new pull
request: #118
#118

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