KeDei 3.5" spi driver?

[gituser9991]

Hi there, have tried multiple cmake options but no luck. To save further wasted time can anyone confirm if it is possible to get the kedei 3.5" spi screen working with fbcp-ili9341?
cheers

[juj]

If this is the screen: http://imageshack.com/i/p77p1oydj, then it is possible that the display is a 3-wire SPI connection and not a 4-wire SPI one, since it looks like there is no Data/Control line used, at least there is no such pin present in the connector on that image.

If it is a 3-wire SPI display, then unfortunately it will not work with fbcp-ili9341. :(

[gituser9991]

Hi Juj, thanks for the fast reply...much appreciated. That looks like the sucker so you have saved me fruitless hours :o) ...as a famous bushranger said "Such is Life". I can't expect too much for $6 I suppose! The pinout says this:
24--GPIO7 --------> TP_CS
26--GPIO8 --------> LCD_CS
22--GPIO25 --------> TP_irq
23--GPIO11 --------> SPI_CLK
21--GPIO9 ---------> SPI_MISO
19--GPIO10 ---------> SPI_MOSI
5v ---------> 5v
GND ---------> GND

Cheers

[juj]

fbcp-ili9341 now gained 3-wire SPI support (no Data/Control line) in the above commit. That can be activated in CMake by setting -DGPIO_TFT_DATA_CONTROL=-1 to tell the build system that there is no D/C pin to connect. The support is experimental, for example it currently does not support ILI9486 in 3-wire mode. Not sure what controller the KeDei display has, but there may be a chance that it could work, if it's like ILI9341 or ILI9486L in 3-wire mode.

See the above commit for updates to Readme.md for the docs.

[gituser9991]

Thanks Juj...will check it out next week...just heading out of town for work :o( (frown for work commitment not your brilliant work!)