Fix SPI bus sharing (TFT, SD, Touch, TMC, etc...) #255
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…th TMC by properly initializing and then terminating the SPI usage in the way that this library was previously written it was not easy to share the SPI bus between components because the SPI protocol was not properly terminated/cleaned-up across SPI sessions, causing conflicts for different SPI bus components. This library has been tested with Marlin 2.1.x bugfix on this repo: github.com/quiret/Marlin/ There is a Marlin pull request that would really appreciate this improvement: MarlinFirmware/Marlin#24911 Please consider releasing another version of this library with the included fix so that the Marlin FW can be drastically improved! clobbering the global SPI object is not a good idea, especially on single-SPI boards... Martin Turski, company owner of EirDev (turningtides@outlook.de)
…would not exist (different architectures)
…initialization (maybe PINS are fixed or they have been already set by the user?)
…hod accepts SCK, MISO, MOSI pins
…communication (used in Marlin FW for proper SPI bus communication in case of async transfers)
…neric HW SPI is completely disabled in that case + SW SPI preferred)
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in the way that this library was previously written it was not easy to share the SPI bus between components because the SPI protocol was not properly terminated/cleaned-up across SPI sessions, causing conflicts for different SPI bus components. This library has been tested with Marlin 2.1.x bugfix on this repo: github.com/quiret/Marlin/
There is a Marlin pull request that would really appreciate this improvement: MarlinFirmware/Marlin#24911
Please consider releasing another version of this library with the included fix onto platformio so that the Marlin FW can be really improved! clobbering the global SPI object is not a good idea, especially on single-SPI boards...
Martin Turski, company owner of EirDev (turningtides@outlook.de)