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    Just a final update. The solution of clearing...

    Just a final update. The solution of clearing GPIO6 ISR bit 19 (corresponding to Teensy pin 15) followed by the NVIC_CLEAR_PENDING(IRQ_GPIO6789) did the trick. I was able count missed conversion...
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    Sorry to trouble you, but I am having a bit of...

    Sorry to trouble you, but I am having a bit of trouble finding the .h files to include in order to access the interrupt pending bits so I can read and/or clear the one in question (Teensy 4.1 digital...
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    Hi Paul, If I read your comment correctly, you...

    Hi Paul,

    If I read your comment correctly, you are recommending that I test the interrupt pending bit for the GPIO pin causing the interrupt (or the ARM NVIC) and cancel it if necessary. That...
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    Need some help with nested interrupts

    Hello,

    I have an application running on a teensy 4.1 with a SPI based ADC running at a very high sample rate. There is one interrupt per sample and each interrupt must do a SPI read. I also have...
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