* [Docs] Add AVR and ARM examples to GPIO Commands
Add examples for reference for people not as well versed in microcontroller coding, such as myself.
* Apply suggestions from code review
Co-Authored-By: fauxpark <fauxpark@gmail.com>
Co-Authored-By: noroadsleft <18669334+noroadsleft@users.noreply.github.com>
|`writePinHigh(pin)` |Set pin level as high, assuming it is an output |`PORTB \|= (1<<2)` | `palSetLine(pin)` |
|`writePinLow(pin)` |Set pin level as low, assuming it is an output |`PORTB &= ~(1<<2)` | `palClearLine(pin)` |
|`writePin(pin, level)`|Set pin level, assuming it is an output |`(level) ? PORTB \|= (1<<2) : PORTB &= ~(1<<2)` | `(level) ? palSetLine(pin) : palClearLine(pin)` |
|`readPin(pin)` |Returns the level of the pin |`_SFR_IO8(pin >> 4) & _BV(pin & 0xF)` | `palReadLine(pin)` |
## Advanced Settings
Each microcontroller can have multiple advanced settings regarding its GPIO. This abstraction layer does not limit the use of architecture-specific functions. Advanced users should consult the datasheet of their desired device and include any needed libraries. For AVR, the standard avr/io.h library is used; for STM32, the ChibiOS [PAL library](http://chibios.sourceforge.net/docs3/hal/group___p_a_l.html) is used.