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ali1234 / raspi-teletext

Generate teletext with a Raspberry Pi
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Raspberry Pi 2 #9

Closed boomlinde closed 5 years ago

boomlinde commented 7 years ago

The RPi 2 uses a different SoC (BCM2836) for which the peripheral base starts at 0x3f000000 instead of 0x20000000. I tried changing the map_base in tvctl.c accordingly, and the program worked fine with Raspberry Pi 2. I might submit a patch if I learn a clean way to detect the model of the unit, but for now I am just leaving this here for reference if anyone wants to run tvctl on Raspberry Pi 2

peterkvt80 commented 7 years ago

Haven't needed to do that since the code was updated a year ago. It works fine on all versions of Pi.

davidjnz commented 7 years ago

Thanks for this boomlinde. Any chance you could let me know the line to change in tvctl.c?

ali1234 commented 7 years ago

Line 142.

davidjnz commented 7 years ago

Any chance you could paste what the line should be changed to? Would this account for lines randomly disappearing and some corruption on the page?

ali1234 commented 7 years ago 
map_base = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0x3f807000);
ali1234 commented 5 years ago

Closing this since the current version should support all models of Raspberry Pi.