now i think i got into pace for writing these notes. I'm more or less consistent, and don't skip much. Does it help? What's the value?
I think it help reflect a bit, even if i do it in a hurry on a office sofa, it still give me a moment to remember what has happen last week, a moment to breath in and out.
anyway, on the last week board that we were doing arrived from jlpcb. i'm impressed with their service - they did everything without any fuss of questions, and helped out to sort issue with dhl and taxes.
board was in semi working state. but eventually through the week we figured out everything:
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wrong pn for the chip - we forgot to add that we need one with flash. so i dust of my soldering skills.
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we put some connections on internal spi which didn't play well. i always forget that the spi bus for flash/psram is not internal. i mostly had worked with stm32, so that quirk bite me from time to time.
and now it works!