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  • Davidelvig's Avatar
    11-18-2019, 12:19 PM
    Teensy 3.2. And your message triggered a thought. The erroneous, intermittent pressure readings happen only when the touch screen is instantiated in interrupt mode, but they happen whether the screen is touched or...
    7 replies | 162 view(s)
  • Davidelvig's Avatar
    11-18-2019, 02:45 AM
    Thanks, both of you for your quick responses. My investigation around SPI.usingInterrupt started with @Paul's comment" in this thread. I can use the touch library without interrupts without error, so I have some...
    7 replies | 162 view(s)
  • Davidelvig's Avatar
    11-18-2019, 01:29 AM
    Thanks, @defragster. I've read through your references and links from there. Intuitively, it makes sense to alert SPI that an interrupt may happen - and hook that interrupt into SPI before the interrupt is attached to...
    7 replies | 162 view(s)
  • Davidelvig's Avatar
    11-15-2019, 05:34 PM
    This code simplifies the problem as much as I can. It need to use two SPI peripherals: Teensy Touch Display: here HP Pressure Sensor: here While it's unlikely you have the latter "in stock"... ...can...
    7 replies | 162 view(s)
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