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Topics - ardiardi

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OLEDs / Odd LCD Behavior
« on: November 10, 2015, 01:43:31 PM »
Hello,

I am using NHD‐1.5‐128128UGC3 Graphic Color OLED Display Module utilizing SPI serial communication. Most of the time the LCD works fine but occasionally puts some of the pixels of a feature at the wrong location. For example, if it is showing large digits (27 pix wide and 40 pix high), for a time all is OK but occasionally the lower portion of a digit is shown at very odd location (designed to be blank) before resuming to normal showing of the digits. Sometimes the wrongly placed pixels are rotated 90 deg!

Any comment/clue to guide me troubleshoot this problem is appreciated.

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OLEDs / OLED SPI Chip Select (CS)
« on: November 10, 2015, 12:55:19 PM »
Hello,

I am using NHD‐1.5‐128128UGC3 Graphic Color OLED Display Module utilizing SPI serial communication. The documentation is very vague regarding manipulation of the CS (Chip Select) line. My question:

Does CS need to be Activated/Deactivated for each command/argument transmitted or is it possible to transmit multiple commands/arguments with CS being activated once upon start and deactivated at end of the process?

Your help is greatly appreciated.


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