That's were Wishbone enters. As far as I know (hope someone with more knowledge
could give us some light), TS-7500 FPGA creates a 256*16 bits memory access,
which can be used with Linux using the test program ts7500ctl (for example,
ts7500ctl --address=0x6A --poke32=0xffff). This will write a 0xffff value in
the address 0x6a, which is actually the one FPGA uses to change the output
value for pins 36 to 21.
This is exactly what I am trying, to override the functionality of pin 36 to
30, but I haven't tested enough, and the code is still failing (not the PWM
code, but the integration with the wishbone).
I have some work to do, but I'll try to test today later, or in the weekend.
Regards,
Enrique
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