rehius / usk

The Unlicense
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2024 oled switches #15

Open Leerz opened 3 weeks ago

Leerz commented 3 weeks ago

had a few run-ins with some oled switches that just glitches too slow - takes a long time.

glitch pattern is

instant instant instant 40 seconds 60 seconds 80 seconds instant 80 seconds 60 seconds

best guess is it's either glitching too slow or too fast (that it couldn't catch the last saved record)

upping the resistance doesn't change the result changing mosfet setup doesn't change the result

above is using 2.75 if using 2.74 - it will always timeout and cycle back to writing the bct and training

my hypothesis is that these new 2024 emmc's (new samsung ones) needs new timings like how the toshiba/kioxia fix was done before on the early days.

or, another fix could be to have several records of known good glitch patters

try the first success pattern twice. then the 2nd, then the 3rd etc before attempting to use the random array pattern.

rehius commented 2 weeks ago

I might look into this issue once either I find such console or someone gives me a high-speed logic analyzer dump of the eMMC lines behavior of this specific case

Leerz commented 2 weeks ago

I might look into this issue once either I find such console or someone gives me a high-speed logic analyzer dump of the eMMC lines behavior of this specific case

or we could a similar fix you did with toshiba. i noticed when i flashed the no overclock file, it always reach the number of attempts, writes the emmc again and tries to glitch.