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AverageMaker / ZeroSeg

Code library and information for the ZeroSeg 7-segment display add-on board for the Raspberry Pi
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All segments illuminated, examples run without error but with no effect. #8

Closed sjfheaton closed 6 years ago

sjfheaton commented 6 years ago

Have recently assembled a ZeroSeg for use with Pi Zero W. Checked all soldering with magnifying glass and all seems fine. Examples built as per instructions and raspbian configured as required. Upon boot all segments illuminate. Examples run without error but with no effect. Have run SPI loopback code successfully. (wget https://raw.githubusercontent.com/raspberrypi/linux/rpi-3.10.y/Documentation/spi/spidev_test.c).

Any suggestions on further diagnostic procedures please?

mszyszko commented 6 years ago

I had exactly the same problem. It seems that the ZeroSeg is not fully compatible with the newest raspberry firmware. I fixed the problem by downgrading the raspberry firmware.

I used rpi-update (https://github.com/Hexxeh/rpi-update) and dowgraded to commit "330fb17cb87c2b57cf8e670b34b7a27527b787fa" (see: https://github.com/Hexxeh/rpi-firmware/commit/330fb17cb87c2b57cf8e670b34b7a27527b787fa)

like so:

sudo rpi-update 330fb17cb87c2b57cf8e670b34b7a27527b787fa

I didn't test all the versions - maybe there is a newer version for which the problem does not occur.

Be advised: This "fix" is not a great solution to the problem - do it at your own risk.

rm-hull commented 6 years ago

guys, @AverageManVsPi doesn’t seem to be maintaining this library anymore.

It was a old port of my max7219 driver, which is currently maintained and now called luma.led_matrix. The library fully supports zeroseg and other led matrix devices

sjfheaton commented 6 years ago

Hi Folks,

Thanks very much for your updates.

Kind regards, Simon