STM32F7 - Switch from alternate function to normal pushpull

[elagil]

Hello!

I have a problem when switching pin modes. First, a pin is used as normal output (push/pull) and I can switch it without problems.

Then, the pin is reused as a PWM output, so it has to be changed to an alternate function pin like this:

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palSetLineMode(LINE_FPGA_INOUT0, PAL_MODE_ALTERNATE(2));

I get PWM output as expected. However, if I want to use the pin as normal push/pull output again, after using

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palSetLineMode(LINE_FPGA_INOUT0, PAL_MODE_OUTPUT_PUSHPULL);

I cannot switch the pin manually anymore. Am I missing something? Why can it not be switched back to a normal push/pull pin again?

Thanks in advance,
Adrian

[Giovanni]

Hi,

It should be possible to switch back, could you inspect the content of the related GPIO registers and see if the settings are those you would expect?

Giovanni