Default assignment to special functions

Some ESP32 devices default to assignment of the IO pins via the IO matrix to specific peripherals (e.g. ESP32S3 JTAG pins). Try using call gpio_reset_pin() on a problem pin before you configure it:

	gpio_reset_pin(GPIO_NUM_4);			//Remove JTAG default assignment

Output drive capability

Output pins can have the drive current capability adjusted using gpio_set_drive_capability() – see here.

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