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What: /sys/kernel/debug/moxtet/input
Date: March 2019
KernelVersion: 5.3
Contact: Marek Behún <marek.behun@nic.cz>
Description: (R) Read input from the shift registers, in hexadecimal.
Returns N+1 bytes, where N is the number of Moxtet connected
modules. The first byte is from the CPU board itself.
Example: 101214
10: CPU board with SD card
12: 2 = PCIe module, 1 = IRQ not active
14: 4 = Peridot module, 1 = IRQ not active
What: /sys/kernel/debug/moxtet/output
Date: March 2019
KernelVersion: 5.3
Contact: Marek Behún <marek.behun@nic.cz>
Description: (RW) Read last written value to the shift registers, in
hexadecimal, or write values to the shift registers, also
in hexadecimal.
Example: 0102
01: 01 was last written, or is to be written, to the
first module's shift register
02: the same for second module
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