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lvgl-micropython / lvgl_micropython

LVGL module for MicroPython
MIT License
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Are there plans to add support for QSPI? #124

Closed jd3096-mpy closed 3 weeks ago

jd3096-mpy commented 2 months ago

There are many AMOLED screens with vibrant colors that are suitable for use with LVGL, but they all use the QSPI protocol. Is QSPI currently supported? Do you plan to add support for QSPI in the future?

kdschlosser commented 2 months ago

while the ESP-IDF docs state it is not yet supported....

https://docs.espressif.com/projects/esp-idf/en/v5.2.2/esp32/api-reference/peripherals/lcd.html#spi-interfaced-lcd

I have added it anyhow. I also opened an issue with Espressif asking them if it is supported or not. They don't always keep the documentation up to date properly.

https://github.com/espressif/esp-idf/issues/14605

kdschlosser commented 2 months ago

to use quad SPI there are 2 new parameters when creating the bus. data2 and data3. fill those 2 parameters with the pin numbers you are using for those additional lines. data2 is "wp" and data3 is "hd"

The hard part about QSPI is what exactly is QSPI. is the sending and receiving of SPI commands QSPI? or is it just the data that is... I have it set so only the data is sent using QSPI and not the SPI commands.

jd3096-mpy commented 2 months ago

to use quad SPI there are 2 new parameters when creating the bus. data2 and data3. fill those 2 parameters with the pin numbers you are using for those additional lines. data2 is "wp" and data3 is "hd"

The hard part about QSPI is what exactly is QSPI. is the sending and receiving of SPI commands QSPI? or is it just the data that is... I have it set so only the data is sent using QSPI and not the SPI commands.

I just thought about something regarding QSPI for the moment, and I'll conduct testing when I have a QSPI screen board in hand.

kdschlosser commented 2 months ago

I was correct about the documentation not being updated for the IDF. It has been added. I just pushed the last commit that should enable the use of QSPI. It gets complicated if you have multiple devices on the same bus and only the display uses QSPI and the other devices do not. I am trying to figure out how to handle that scenario.

favnec5 commented 2 months ago

hello, you can found functionnal example here : https://github.com/jmgrosen/lcd_binding_micropython/tree/master/lcd/bus/qspi

straga commented 1 month ago

https://github.com/lvgl-micropython/lvgl_micropython/discussions/161