Compatiblity with Adafruit Feather M0

[STrRedWolf]

Trying to use the board with the Feather M0 and having these compile issues (using the latest library dated today):

Arduino: 1.6.8 (Windows 10), Board: "Adafruit Feather M0 (Native USB Port)"

C:\Users\tygris\Documents\Arduino\libraries\Adafruit_HX8357\Adafruit_HX8357.cpp: In constructor 'Adafruit_HX8357::Adafruit_HX8357(int8_t, int8_t, int8_t, int8_t, int8_t, int8_t)':

C:\Users\tygris\Documents\Arduino\libraries\Adafruit_HX8357\Adafruit_HX8357.cpp:30:3: error: '_cs' was not declared in this scope

   _cs   = cs;

   ^

exit status 1
Error compiling for board Adafruit Feather M0 (Native USB Port).

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[ladyada]

yep, its not ported to the SAMD21 yet - you do figure out we'll merge. no ETA on us doing it at this time.

[STrRedWolf]

Do we know what #define's are set for the SAMD21 in gcc? That'll help me in the long run if I'm forking it.

[ladyada]

check out https://github.com/adafruit/Adafruit-SSD1351-library/pull/10/commits/111055c4f6e194020a4313a2be6f5bfc4e2b08b5

and

https://github.com/adafruit/Adafruit_ILI9341/blob/master/Adafruit_ILI9341.h#L159

for ideas?

[STrRedWolf]

I have it working with SPI, but it does not work with the SPI based card reader. I think the M0's SPI SERCOM doesn't like to multiplex with arbitrary pins.

I'm now looking into moving the SPI to exclusive card-only and use the 8-bit mode. More research!

[smartrip]

Hi guys, @STrRedWolf can you publish your code for TFT in SPI mode on Feather M0? I'm working with the library and also use SAMD21 for my project. I don't need SD card reader.

Thanks!!!

[STrRedWolf]

My code is a bit of a mess, alas, and it's been a bit too long. But @ladyada did point to the right places to adjust in order for it to work.

I also hope @ladyada releases a version of the 320x480 display as a FeatherWing. That'll fit my use case and maybe yours.

[smartrip]

Thanks @STrRedWolf - I ended up with 2.8" ILI 9341 display that works perfectly well with M0 (Feather/Zero) and the touchscreen that is driven by I2C, also fully supported. Clean config and no need to port the drivers.

[ladyada]

fixzed!