Replies to This Discussion

Permalink Reply by Søren Kuula on April 2, 2013 at 1:14pm

Bootloader still runs at 115200..

Regards

Soren

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Permalink Reply by Marco Mueller on April 2, 2013 at 10:20pm

Hi,

setting COM6 to 115200 baud in Mission Planner won't let me connect to the APM anymore.

Does UART0 support 115200? Can I change the baud rate for the bootloader?

I never changed any baudrates on the APM. Where and how can I change these?

Permalink Reply by Søren Kuula on April 3, 2013 at 3:27am

Hi,

For MAVLink, use 57600.

For firmware upgrades, select 115200 and do not connect. You will have to push the reset button about the same time as you start upload.

Regards

Soren

Permalink Reply by Marco Mueller on April 3, 2013 at 7:51am

It works!

For Mission Planner 1.2.38 you should use the following timing when uploading new firmware to APM 2.5

1. goto firmware and select com port for usb to serial adapter
2. select 115200 baud
3. DO NOT connect
4. click on desired firmware
5. click yes to continue
6. while detecting APM version press and release the reset button
7. wait for download from internet
8. after reading hex process started press and hold reset button until reading hex finished. Release reset button
9. wait for the magic to happen

Thanks to all who supported me!

Marco

Permalink Reply by Mathieu on April 2, 2013 at 12:51am

Can I ask what version of APM do you have and how did you broke it ? I'm using USB port very often and  I would be very disappointed if it's happen to mine... : / Is there any way to prevent this ?

Thanks 

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Permalink Reply by Bill Bonney on April 2, 2013 at 7:15am

You can reduce the wear on the USB port by connecting a short micro USB cable, and then connecting a USB extension cable.

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Permalink Reply by Colin Sadler on April 2, 2013 at 1:26pm

I had an APM clone which didn't work right in the first place.

I'm on my third 3DR APM and haven't had any issues with the USB connection (APM2 x 2, APM2.5+)

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Permalink Reply by Drone Savant on April 3, 2013 at 1:46pm

"I had an APM clone which didn't work right in the first place." 

Shoot me a PM Colin... glad to help you with it. Which one was it? 

Can you shoot us a photo of where it ripped off the board? You may trip simply resoldering a new one on. 

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