I just got the USB host shield from sparkfun (http://www.sparkfun.com/products/9947)
When I tried to execute the board test sample I got the following error :
Error: OSCOKIRQ failed to assert
Circuits At Home 2010 USB Host Shield QC test routine
Press any key to continue¦ Reading REVISION registerâ€¦Die revision invalid. Value returned: 00 Test FAILED! Test Halted. 0Ã—55 pattern is being transmitted via SPI to aid in troubleshooting Press RESET to restart test
I'am using USB Host library downloaded from http://www.circuitsathome.com (with the name felis-USBHostShield-a59ba5b.zip)
I tried to change MAXGPX and MAXRESET to #define MAXGPX 7 #define MAXRESET 8 but problem still persists.
I use an ATMEGA 2560 linked to my PC and an external +9V power supply. (SPI pins are correctly connected according to atmega2560 specification)