Posted on January 07, 2016 at 12:14Hi, similar (but different) issue to a previous posting of mine.
I am seeing PA1 on an STM32F205 get driven low during standby after __WFI()
I was expecting all GPIO to go Hi-Z during standby apart from the pins detailed in the datasheet (and SWD/JTAG pins when sleep-debugging is enabled).
I thought it might be an issue with clocks being disabled before sleep so I am now manually changing PA1 to an input before standby (it's used as an output in my design). There is an external 10K pull-up on PA1, but it still gets driven to 0v during standby.
If I dont enable debug sleep, then the pin behaves as expected, but if I call
DBGMCU_Config(DBGMCU_STANDBY, ENABLE);
before standby, I see this behaviour.
Thanks in advance for any tips.
Jamie.
