I was trying the SPI loop back demo http://odroid.com/dokuwiki/doku.php?id= ... rdware_spi by shorten pin 7 and 9, it did work only one out of three tries, sometimes it's even worse
Code: Select all
./spi_test
spi mode: 0
bits per word: 8
max speed: 500000 Hz (500 KHz)
can't send spi message: Invalid argument
Aborted
root@odroid:/home/odroid# ./spi_test
spi mode: 0
bits per word: 8
max speed: 500000 Hz (500 KHz)
can't send spi message: Invalid argument
Aborted
root@odroid:/home/odroid# ./spi_test
spi mode: 0
bits per word: 8
max speed: 500000 Hz (500 KHz)
AB 00 00 00
RG