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  1. C

    Teensy 4.0 Chip Select Pins

    Thank you again for your response, Paul. The sensor has an internal pull-up resistor on the interrupt pin so an external one is not needed - I added one just to confirm with no change. This is an interesting problem, I've noticed there are several pins which my code works every time. At this...
  2. C

    Teensy 4.0 Chip Select Pins

    Thank you Paul and Kurt for your quick responses. At first glance, it does appear that the Chip select pin functions correctly - I am able to recreate your oscilloscope pattern, Paul - however, I am not able to consistently obtain measurements using Chip Select pin 7. To illustrate, here is...
  3. C

    Teensy 4.0 Chip Select Pins

    Hello PJRC Folk, I am attempting to use SPI to interface with a Pressure Sensor (https://invensense.tdk.com/wp-content/uploads/2022/08/DS-000416-ICP-20100-v1.4.pdf). There is only one using SPI communication. I have had multiple generations of this interface and the most recent does not work. I...
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