- Wed Sep 09, 2015 10:43 am
#28711
Hi, this is driving me mad so appreciate any advice.
I have an 8x8 led matrix driven by a max7219, it works perfectly on an arduino and i have it working on the esp but here's the kicker
It only works between power/reset cycles
i.e.
power up esp nothing
unplug power, plug back in all working
unplug power, plug back in, nothing
unplug power, plug back in all working
repeat....
Does anybody have any clues? the code to program them over spi is not that hard and I have tried various examples and they all exhibit the same behaviour any clues?
Thanks
I have an 8x8 led matrix driven by a max7219, it works perfectly on an arduino and i have it working on the esp but here's the kicker
It only works between power/reset cycles
i.e.
power up esp nothing
unplug power, plug back in all working
unplug power, plug back in, nothing
unplug power, plug back in all working
repeat....
Does anybody have any clues? the code to program them over spi is not that hard and I have tried various examples and they all exhibit the same behaviour any clues?
Thanks
