[Paparazzi-devel] USB bootloader

[Scott Morken]

Hi

I am trying the Paparazzi usb bootloader for the LCP214x chips.  I have 
made some progress in trying it out, but I have run into a problem, and 
I am wondering if anyone has seen it before.

I loaded the ram image of the bootloader on with lpc21isp over a serial 
port, and then installed a libusb driver for the bootloader.  I then ran 
the USB bootloader host program.

I got some errors and now I cant get windows to recognize the ram 
bootloader anymore.  It always says "unknown device".  Anyone have an 
idea of what happened?

I checked out the host and lpc code today May 15 2008 from CVS from:

http://cvs.savannah.nongnu.org/viewvc/paparazzi3/sw/ground_segment/lpc21iap/?root=paparazzi
http://cvs.savannah.nongnu.org/viewvc/paparazzi3/sw/airborne/arm7/test/bootloader/?root=paparazzi


Here are the error messages I got.

   C:\winarm\utils\lpc21isp_beta_src\Debug>"C:\data\source code\LPCBootlo
   aderHost\debug\LPCBootloader.exe" "C:\data\source code\LPCBootloaderFi
   rmware\bl.elf" "GENERIC 112244556677"
   .
   Found USB device
   BootROM code: 2.12
   Part ID: 0x0402FF25 (LPC2148, 512k Flash, 32k+8k RAM)
   BootLoader version: 1.3
   changing vector table
   #ISP error (10:COMPARE_ERROR)
   compare MEM failed at 0x00000000 base 0x40004000 size 0x00001000

   C:\winarm\utils\lpc21isp_beta_src\Debug>"C:\data\source code\LPCBootlo
   aderHost\debug\LPCBootloader.exe" "C:\data\source code\LPCBootloaderFi
   rmware\bl.elf" "GENERIC 112244556677"
   .
   Found USB device
   BootROM code: 2.12
   Part ID: 0x0402FF25 (LPC2148, 512k Flash, 32k+8k RAM)
   BootLoader version: 1.3
   changing vector table
   #ISP error (10:COMPARE_ERROR)
   compare MEM failed at 0x00000000 base 0x40004000 size 0x00001000

   C:\winarm\utils\lpc21isp_beta_src\Debug>"C:\data\source code\LPCBootlo
   aderHost\debug\LPCBootloader.exe" "C:\data\source code\LPCBootloaderFi
   rmware\bl.elf" "GENERIC 112244556677"
   .
   Found USB device
   BootROM code: 2.12
   Part ID: 0x0402FF25 (LPC2148, 512k Flash, 32k+8k RAM)
   BootLoader version: 1.3
   changing vector table
   #ISP error (10:COMPARE_ERROR)
   compare MEM failed at 0x00000000 base 0x40004000 size 0x00001000

   C:\winarm\utils\lpc21isp_beta_src\Debug>"C:\data\source code\LPCBootlo
   aderHost\debug\LPCBootloader.exe" "C:\data\source code\LPCBootloaderFi
   rmware\bl.elf" "GENERIC 112244556677"
   .
   Found USB device
   BootROM code: 2.12
   Part ID: 0x0402FF25 (LPC2148, 512k Flash, 32k+8k RAM)
   BootLoader version: 1.3
   changing vector table
   #ISP error (10:COMPARE_ERROR)
   compare MEM failed at 0x00000000 base 0x40004000 size 0x00001000