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Driving 2X RA8875 off of one microcontroller, can it be done
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Re: Driving 2X RA8875 off of one microcontroller, can it be

by adafruit_support_rick on Mon May 02, 2016 8:08 am

You're welcome!

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Re: Driving 2X RA8875 off of one microcontroller, can it be

by sam_noriahome on Thu Feb 23, 2017 2:14 pm

Will I be able to use the RA8875 driver for a display, two KTA 259 shields, and an SD card shield at the same time? I want to be able to get thermocouple data from the KTA 259 shield, display the temperatures on my display, and save the data to an SD card. I am using an Arduino Mega 2560, the RA8875 driver, the 40-pin 800x480 TFT Display without Touchscreen, the KTA 259 shield found here: https://oceancontrols.com.au/KTA-259.html, the SD card shield from LC Studio which is essentially the same as: https://www.amazon.com/SunFounder-Modul ... no+sd+card, and also ordered a 74HC125 chip. If you have any recommendations or tips to make this work please let me know.
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Re: Driving 2X RA8875 off of one microcontroller, can it be

by adafruit_support_rick on Thu Feb 23, 2017 2:55 pm

Well, I don't know. You'll have to see if there are pin conflicts on the Chip Select lines.
Also, the OceanControls shield doesn't appear to play well with other SPI devices. See this thread. (It gets fixed on page 3)
viewtopic.php?f=31&t=39699&hilit=+ocean

At the very least, you will have to tristate MISO on the RA8875, as described in this thread. But this is the kind of thing where I can't tell you if it will work or not without trying it out.

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