Error codes

Sometimes Unicorn HAT may fail with an error code, this table details some of the places to look for answers in specific cases:

• 1 Generic failure
• 2 Out of memory
• 3 Hardware revision is not supported - see: https://github.com/pimoroni/unicorn-hat/issues/70
• 4 Memory lock failed
• 5 mmap() failed - you probably forgot to run your code as root, use sudo python yourcode.py
• 6 Unable to map registers into userspace
• 7 Unable to initialize GPIO
• 8 Unable to initialize PWM"
• 9 Failed to create mailbox device
• 10 DMA error
• 11 Selected GPIO not possible
• 12 Unable to initialize PCM
• 13 Unable to initialize SPI
• 14 SPI transfer error

Please find the source here.