Hi Everyone,
Does anyone know if Pin33(PTA4) on Teensy 3.1 is somehow special?
If it is tied low (even through a friendly resistor) teensy will not boot when applying power, nor will it reboot when the Prog button is pressed. After one of those two events has taken place, the 3.1 becomes unresponsive until power is completly disconnected, then the connection to PTA4 is removed, and power is connected again.
The Teensy 3.1 schematic shows that PTA4 is not connected to anything external to the MCU, so I'm assuming there is something special in the MCU itself. Maybe angry squirrels???
I have two Teensy 3.1s - one of them was untouched before testing these scenario - and they are both behaving the same way.
If this pin is special, how do I disable it's special-ness and use it as a normal I/O pin?
Thanks for you help,
Dozy
Does anyone know if Pin33(PTA4) on Teensy 3.1 is somehow special?
If it is tied low (even through a friendly resistor) teensy will not boot when applying power, nor will it reboot when the Prog button is pressed. After one of those two events has taken place, the 3.1 becomes unresponsive until power is completly disconnected, then the connection to PTA4 is removed, and power is connected again.
The Teensy 3.1 schematic shows that PTA4 is not connected to anything external to the MCU, so I'm assuming there is something special in the MCU itself. Maybe angry squirrels???
I have two Teensy 3.1s - one of them was untouched before testing these scenario - and they are both behaving the same way.
If this pin is special, how do I disable it's special-ness and use it as a normal I/O pin?
Thanks for you help,
Dozy
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