[Paparazzi-devel] Lisa/M Bootloader Question

[Luke Ionno]

I’ve got a bit of a dumb question here, but the STM32 architecture has an integrated USB bootloader, right?  If so, do I have to take the BOOT pin high (3v3) when uploading a program to the Lisa/M?

 

I’m working on VMWare Player Ubuntu (Natty) install, which works very well with my TWOGs, which always show up on the USB device list, whereas the Lisa doesn’t seem to do anything.  (The power LED comes on, and LED1 flashes periodically, if I don’t hold BOOT high during startup.)  Predictably enough, if I try performing an upload in Paparazzi Center, I get a “Error, unable to open ftdi device: device not found” message.  This occurs regardless of whether I hold the boot pin high or not, during boot. 

 

I’m assuming that when the bootloader is running, I should see some indication of a USB device being detected, correct?  I also notice that unlike a TWOG, the Lisa is booting as soon as I connect the USB cable?  Do I still need to attach a battery to the Vin port, for programming?  (I’ve tried it both ways, and it doesn’t seem to make a difference, but I figure I should ask.)

 

Thanks!

 

Regards,

~Luke