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Re: [Paparazzi-devel] Problem with custom Lisa M 2 autopilot

From: Felix Ruess
Subject: Re: [Paparazzi-devel] Problem with custom Lisa M 2 autopilot
Date: Tue, 20 May 2014 22:53:26 +0200

Hi Julien,

seems you are using a STM32F105, but it would make sense to replace it with the more powerful F4, e.g. STM32F405 or STM32F415.
The F1 doesn have a rom based dfu bootloader as the F4, so you indeed need to either use a JTAG/SWD tool or luftboot.
On F4 you can omit the button if you e.g. connect usb vbus to boot0 like on Apogee...

I also noticed that you put a BMP085 on it, latest Aspirin already comes with the MS5611 (which is a better choice nowadays)... so that is probably not needed.

Regarding luftboot, make sure you don't accidentally force the skip of the bootloader by reading a zero on PC0, see also
And if you haven't flashed a valid application to it so far, it should go into bootloader mode at startup anyway (if flashing of luftboot was sucessful), and you should see some leds blinking ("knight rider" mode on LisaM, but you have slightly different asignments if I saw that correctly).

Cheers, Felix

On Tue, May 20, 2014 at 9:57 PM, Marius Pfeffer <address@hidden> wrote:


You could also use the rom based dfu mode to upload code via USB. This would make it independent from a bootloader, but requires a button for booting into dfu mode.

Best regards
Marius Pfeffer

Am 20.05.2014 21:49 schrieb "huotj" <address@hidden>:


Here, at Sherbrooke University, we try to develop a new version of lisa M 2
autopilot. You can see the schematic here : (In fact,
we plan to share it after the development).

We manage to install luftboot bootloader via Black Sphere tool, but we
cannot program it via Paparazzi Center. It's seems it do not enter in
bootloader mode. If someone would like to take a look to our schematic to
check if there is obvious error, we would appreciate.

Thank you

Julien Huot

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