I received my second RA8875 module and I have the same problem with readData, I had to make the same modifications in the Adafruit_RA8875.cpp library and the RA8875.cpp library so that it works except for the readdata which does not work, I wonder if it can come from a spi librarian conflict for example, your test with the RA8875 you did it with the latest versions of the libraries?
arduino 1.8.8
Adafruit_GFX v1.3.6
Adafruit_RA8875 v1.0.4
????
you should do the test, I think it will not work.
I use the next spi library.
arduino 1.8.8
Adafruit_GFX v1.3.6
Adafruit_RA8875 v1.0.4
????
you should do the test, I think it will not work.
I use the next spi library.
Code:
name=SPI
version=1.0
author=Arduino
maintainer=Paul Stoffregen
sentence=Enables the communication with devices that use the Serial Peripheral Interface (SPI) Bus.
paragraph=SPI is a synchronous serial data protocol used by microcontrollers for communicating with one or more peripheral devices quickly over short distances. It uses three lines common to all devices (MISO, MOSI and SCK) and one specific for each device.
category=Communication
url=http://www.arduino.cc/en/Reference/SPI
architectures=*