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Type: Posts; User: Roger Parkinson

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  1. They do have two constructors on the SSD1306...

    They do have two constructors on the SSD1306 library, but the other constructor is for the I2C option. I2C works fine when I solder the jumpers as instructed by their tutorial.
    The SPI constructor...
  2. Thanks, Paul. I found information on the Adafruit...

    Thanks, Paul. I found information on the Adafruit forum that confirms your view that is isn't using 'real' SPI at all.
    So the rule is that when a library takes that approach I need to avoid sharing...
  3. Thanks, DeweyOxberger. You've confirmed that it...

    Thanks, DeweyOxberger. You've confirmed that it ought to work and what you say about the highs and lows is convincing.
    The LCD CS is specified by OLED_CS and passed into the display class at...
  4. Thanks for the reply. I changed the program...

    Thanks for the reply. I changed the program around to write to the LCD then init the SD all in setup()
    Then I added some more code to loop() to make it clearer that it was writing to the LCD.
    The...
  5. I simplified this down to isolate the problem and...

    I simplified this down to isolate the problem and I put it back onto the Teensy 2.0 because, after all, that is where I need to end up.
    So here is the complete sketch from the Arduino IDE (no...
  6. Can we run multiple SPI devices on a Teensy++ 2.0?

    Can we run multiple SPI devices on a Teensy++ 2.0? Here is what I'm doing:
    1) an SD card with its CS on pin 20
    2) a tiny LCD from Adafruit (http://www.adafruit.com/products/326) with its CS on pin...
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