I will be very thankful if you can help me out.
I own Arduino Leonardo.
I attached the usb host shield (https://www.sparkfun.com/products/9628
) to the Leonardo.
I changed the QC code so it will start to transmit only if the serial is ready:
Serial.begin( 115200 );
while (!Serial) ;
I got the following message:
Circuits At Home 2011
USB Host Shield Quality Control Routine
Reading REVISION register... Die revision invalid. Value returned: FF
Unrecoverable error - test halted!!
0x55 pattern is transmitted via SPI
Press RESET to restart test
the board is turned on, led is on.
first time trying arduino.
I have lot of experience with AVR mcu's.