shiftleftplusone

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missing documentation and example code: how to quickly and permanently change SPI clock divider

ps, and then ```cpp SPI.beginTransaction(SPISettings(8000000, MSBFIRST, SPI_MODE0)); SPI.endTransaction(); ``` would work for all attached devices at once, no matter how many there are currently, like TFT(s) and SD slots?

missing documentation and example code: how to quickly and permanently change SPI clock divider

but not this reference page: https://www.arduino.cc/en/Tutorial/SPITransaction

missing documentation and example code: how to quickly and permanently change SPI clock divider

now what confuses me is: " Your settings remain in effect for the duration of your "transaction". " But I don't want to limit the clock speed to the duration...

missing documentation and example code: how to quickly and permanently change SPI clock divider

thank you, now it's clear to me (I hope) ;)

missing documentation and example code: how to quickly and permanently change SPI clock divider

...not quite though, I'm afraid..: let's say, I #include SD.h and Adafruit_ILI9340.h and Adafruit_GFX.h and Pixycam.h and whatever. Now I actually have no control over anything what happens in these...

missing documentation and example code: how to quickly and permanently change SPI clock divider

the reason is simply that all my TFTs are insanely lame, and I want to increase SPI speed as much as possible to accelerate screen output. Also to some SD...

missing documentation and example code: how to quickly and permanently change SPI clock divider

Then the number of SPI libs which then had to be patched is Legion. More over, for this task I'm a too stupid end user, I even have no idea...

missing documentation and example code: how to quickly and permanently change SPI clock divider

Please read closely again: "Then the number of SPI libs which then had to be patched is Legion (i.e., countless). More over, for this task (i.e., to patch innumerable exsting...