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  • Case ID: 125957
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NRF52832 TWI electrical problem

Vasily

Good day.

I`m very new to nordic chips.

I`m try to use NRF52832 as TWI master with OLED display based on SSD1306 with I2C.

And got this. image description

Yellow is SCL, Blue is SDA. External pullups not used, speed 100k, TWI configuration is default from SDK 14.0 (as i know internal pullups is used).

I'm not using nordic dev board, just a module with nrf52832 from china. Schematics looks like this: image description

Power supply same for chips taken from ldo. Not sure about nrf52 capasitors and other stuff, board have a shield.

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    Hi, Vasily. In that case, can you take a picture of your nRF module connected with the power line, the SSD1306 and the oscilloscope probe?

    We cannot tell how the power is supplied by viewing this diagram.

    -Best Regards

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  • 0

    Hi, Vasily. In that case, can you take a picture of your nRF module connected with the power line, the SSD1306 and the oscilloscope probe?

    We cannot tell how the power is supplied by viewing this diagram.

    -Best Regards

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