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Remove references to set_backlight

pull/91/head
helgibbons 2021-03-12 11:04:02 +00:00
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libraries/pico_explorer/README.md
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@ -1,6 +1,6 @@
# Pico Explorer Pack <!-- omit in toc --> # Pico Explorer Base <!-- omit in toc -->
Our Pico Explorer Pack offers a vibrant 1.14" (240x240) IPS LCD screen for your Raspberry Pi Pico it also includes four switches, a piezo and a DRV8833 motor driver. Pico Explorer Base straps a whole host of physical computing goodies to your Pico - a vibrant 1.14" (240x240) IPS LCD screen, four switches, a piezo buzzer/speaker and a DRV8833 motor driver, as well as handy accessible general purpose inputs and outputs and a built in breadboard.
We've included helper functions to handle every aspect of drawing to the screen and interfacing with the buttons, piezo and motor driver. [See the library reference](#reference) for details. We've included helper functions to handle every aspect of drawing to the screen and interfacing with the buttons, piezo and motor driver. [See the library reference](#reference) for details.
@ -36,11 +36,6 @@ PicoExplorer pico_explorer(buffer);
int main() { int main() {
pico_explorer.init(); pico_explorer.init();
// set the backlight to a value between 0 and 255
// the backlight is driven via PWM and is gamma corrected by our
// library to give a gorgeous linear brightness range.
pico_explorer.set_backlight(100);
while(true) { while(true) {
// now we've done our drawing let's update the screen // now we've done our drawing let's update the screen
@ -55,11 +50,13 @@ int main() {
Pico Explorer uses our Pico Graphics library to draw graphics and text. For more information [read the Pico Graphics function reference.](../pico_graphics/README.md#function-reference). Pico Explorer uses our Pico Graphics library to draw graphics and text. For more information [read the Pico Graphics function reference.](../pico_graphics/README.md#function-reference).
Please note that the backlight on Pico Explorer is not dimmable (we needed the pins to hook up other functions) so the `set_backlight` function is not available for this board.
### Constants ### Constants
#### Buttons #### Buttons
The four buttons, A, B, X and Y have correponding constants set to their respective GPIO pins. For example: The four buttons, A, B, X and Y have corresponding constants set to their respective GPIO pins. For example:
```c++ ```c++
bool a_is_pressed = pico_explorer.is_pressed(pico_explorer.A); bool a_is_pressed = pico_explorer.is_pressed(pico_explorer.A);
@ -91,21 +88,6 @@ Sets up Pico Explorer. `init` must be called before any other functions since it
pico_explorer.init(); pico_explorer.init();
``` ```
#### set_backlight
```c++
void set_backlight(uint8_t brightness);
```
Set the display backlight from 0-255.
```c++
uint8_t brightness = 128;
pico_explorer.set_backlight(brightness);
```
Uses hardware PWM to dim the display backlight, dimming values are gamma-corrected to provide smooth brightness transitions across the full range of intensity. This may result in some low values mapping as "off."
#### set_motor #### set_motor
```c++ ```c++