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Documentation says:
Pin 15 - Alternate function: GPIO0
Pin 16 - Alternate function: GPIO1
Pin 13 - Alternate function: GPIO2
Pin 12 - Alternate function: GPIO3
How can I use those GPIOs (as GPIO: set direction, read/write logical level)? I thought I can only use the ones with Px number assigned e.g.
Pin 19 - Alternate function: GPIO:P0
Pin 19 - Alternate function: GPIO:P1
...
If I cannot access them as GPIO then why hey are marked as GPIO ?
Solved! Go to Solution.
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GPIO0 to GPIO3 are used internally by the FW and the boot ROM for I2C, SPI1 and HCI uart and are not available to the application.
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GPIO0 to GPIO3 are used internally by the FW and the boot ROM for I2C, SPI1 and HCI uart and are not available to the application.
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Note: MadMax is referring to the Pin numbering/naming that is shown in the 20732/20736 datasheet (used for chip-on-board designs), not the 20732S/20736S (module) datasheet.