ESP32

[chegewara]

• Arduino board: ESP32 devkit-C

• Arduino IDE version (found in Arduino -> About Arduino menu): Arduino IDE 1.8.3

• List the steps to reproduce the problem below (if possible attach a sketch or copy the sketch code in too): test sketch from example folder

  ...\libraries\Adafruit_SSD1331_OLED_Driver_Library_for_Arduino\Adafruit_SSD1331.cpp: In member function 'void Adafruit_SSD1331::begin()':
  
  ...\libraries\Adafruit_SSD1331_OLED_Driver_Library_for_Arduino\Adafruit_SSD1331.cpp:289:21: error: cannot convert 'volatile uint32_t* {aka volatile unsigned int*}' to 'PortReg* {aka volatile unsigned char*}' in assignment
  
   sclkportreg = portOutputRegister(digitalPinToPort(_sclk));
  
               ^
  
  ...\libraries\Adafruit_SSD1331_OLED_Driver_Library_for_Arduino\Adafruit_SSD1331.cpp:293:20: error: cannot convert 'volatile uint32_t* {aka volatile unsigned int*}' to 'PortReg* {aka volatile unsigned char*}' in assignment
  
   sidportreg = portOutputRegister(digitalPinToPort(_sid));
  
              ^
  
  ...\libraries\Adafruit_SSD1331_OLED_Driver_Library_for_Arduino\Adafruit_SSD1331.cpp:305:15: error: cannot convert 'volatile uint32_t* {aka volatile unsigned int*}' to 'PortReg* {aka volatile unsigned char*}' in assignment
  
   csportreg = portOutputRegister(digitalPinToPort(_cs));
  
         ^
  
  ...\libraries\Adafruit_SSD1331_OLED_Driver_Library_for_Arduino\Adafruit_SSD1331.cpp:308:15: error: cannot convert 'volatile uint32_t* {aka volatile unsigned int*}' to 'PortReg* {aka volatile unsigned char*}' in assignment
  
  rsportreg = portOutputRegister(digitalPinToPort(_rs));
  
         ^
  
  exit status 1`

[mkf434]

Hi I'm having this exact problem with the Huzzah32 Featherboard and the OLED with the SSD_1331, pretty sure I'm wiring up the SPI correctly but nothing happens. I changed the .cpp file with a cast to the file type it wants but that doesn't allow the screen to function.

[chegewara]

Hi, if you are looking for esp-idf version then this is very early version of mine. I dont know if it still works: https://github.com/chegewara/ssd1331_driver-esp-idf

If you will have any problems you can open issue in my repo and i will try to fix it