AnsweredAssumed Answered

Using PA15 as an IO on STM32F373, SWJ_CFG?

Question asked by prinster.jim on Jul 18, 2017
Latest reply on Jul 18, 2017 by prinster.jim

I am using an STM32F373 and debugging with SWD.  I want to use PA15 as an IO pin.  When I go to configure PA15 as an output, the call to GPIO_INIT() causes a reset which disconnects the debugger.  I'm not sure, but I think this is because PA15 is used for JTAG and something is interfering.  

 

The reference manual says to use PA15 I need to set SWJ_CFG=010.  How do I do this?  I've searched through the manual and can't find any reference to it other than that.  The STM32F103 has an AFIO register for setting it but I can't find something similar.

 

Is there something else I'm failing to do?

 

Thanks, Jim

Outcomes