This is what I meant by toggling.
What is your startup sequence ? With BNO, VDD must be applied before VDDIO, otherewise the startup will fail. But if both voltages are present, and the (BNO) reset line is pulsed, then it makes a true reset of the (BNO)microcontroller and can recover from incorrect voltagae rails power-up order.
@Wholt wrote:
So when I pull the reset line of the MCU low and therefore the whole application program restarts, the BNO is unresponsive.
What happens to the I/O pins of your MCU when it is in a reset state ? Have you confirmed the status of the I/O pins during reset ?
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