NHD-1.69-160128ASC3 stuck with colourful mosaic

mvkakati

• January 07, 2021 08:20

HI,

 I am stuck with colorful mosaic after device initialization.

1. The Arduino code works perfectly.

2. Tried modifying the code and running on STM32F4, SPI interface, after initialization I get colorful mosaic. I can turn on/off display. Cannot do any pixel operation.

Any guidance would of great help.

Thanks,
Milind

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  Alee_S

  • January 07, 2021 09:20

  Hi Milind,
  
  It appears the OLED display has initialized properly under the STM32F4 platform at the very least, but any data routines are unable to go through for some reason.
  
  A simple check would be to ensure any jumper wires are not cross-wired on the setup, although you likely already examined this. Another good place to check is whether the ports used for the data lines are being properly enabled in software as output pins, and/or whether certain pins on separate ports are tied together by an on-board resistor on the STM board that may be blocking proper logic transmission on 2 pins being used to communicate with the OLED display. Lastly, please review your 'data' routine carefully to ensure the modifications on the code are being correctly implemented.
  
  Please keep us updated on your findings.

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