http://docswiki.gumstix.com/Robostix_gumstix_ISP
You can use the gumstix to download files into the robostix flash. Create a jumper which connects Atmel 0 Tx to PXA ST Rx and Atmel 0 Rx to PXA ST Tx on the Robostix. It is the jumpers in the section labeled UARTS near the 60-pin hirose connector. I used an old IDE cable and wired in some jumpers; ugly but works.
# insmod robostix_drv.ko (to remove use rmmod robostix_drv.ko)
# ./uisp
Atmel AVR ATmega128 is found.
Yoohoo!
Now added the robostix driver to /etc/modules.
mkdir /lib/modules/2.6.18gum/kernel/drivers/robostix/
mv robostix_drv.ko /lib/modules/2.6.18gum/kernel/drivers/robostix/
insmod /lib/modules/2.6.18gum/kernel/drivers/robostix/robostix_drv.ko
depmod -a
modprobe robostix_drv
then added:
# Driver for robostix control
robostix_drv
to /etc/modules
set the fuses on the robostix:
# uisp --wr_fuse_l=0xbf --wr_fuse_h=0xc9 --wr_fuse_e=0xff
Atmel AVR ATmega128 is found.
Fuse Low Byte set to 0xbf
Fuse High Byte set to 0xc9
Fuse Extended Byte set to 0xff
Next, I downloaded the test LED flashing program to see if all went well:
# uisp --erase --upload if=Flash-LED.hex
Atmel AVR ATmega128 is found.
Erasing device ...
Reinitializing device
Atmel AVR ATmega128 is found.
Uploading: flash
yes! flashing LEDs....looking good.
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