av_rmt_example_with_6_adc_buttons

## ESP  AV RMT - A Remote Controller for a YAMAHA Audio Receiver, a PANASONIC Television, a Pioneer DVD Player and an Apple TV

We create a remote controller to power on 
* the Panasonic TV,
* the YAMAHA Audio Receiver and
* the Pioneer DVD Player

with a button click
and choose the right settings for
* watching TV (red button) color: red,
* watching Apple TV (yellow button) color: yellow,
* watching DVDs or listening to CDs (green button) color: green,
* listening to the Radio (blue button) color: blue or
* switching everything off (black button) color: white

## Hardware
to be controlled:

* YAMAHA Audio Receiver
* Panasonic TV
* Pioneer DVD Player
* (Apple TV)  

for the Remote Controller:

* ESP-C3 Supermini SoC 
* seeed Grove IR sender
* 3.7 V LiPo battery
* Charger board for 3.7V Li batteries, USB-C
* Plastic package with 6 buttons (five of them are currently used)

## Build and Flash

Build the project and flash it to the board, then run the monitor tool to view the serial output:

* Run `source <directory with ESP-IDF version>/export.sh` to set IDF environment
* Run `idf.py set-target esp32c3` to set target chip
* Run `idf.py build` to build the project
* Run `idf.py flash monitor` to flash and monitor the project

(To exit the serial monitor, type `Ctrl-]` (or on a Mac `Ctrl-Option-6`).

See the Getting Started Guide for all the steps to configure and use the ESP-IDF to build projects.

## Function
The six buttons in the package are connected to a resistor ladder which is used as input to ADC unit 1, ADC channel 0 on GPIO 0 of the ESPC3 Supermini board. 

For every button a GenericButton instance is created and for the BUTTON_SINGLE_CLICK event a callback function is defined.

For visual feedback the onboard LED is used. If the onboard LED is of type LED strip the color is changed according to the button pressed. This is unfortunately not true for the ESPC3 Supermini SoC.

### Actions
A single click on the red button powers on the TV and the Receiver for watching TV - the onboard led lights red.

A single click on the yellow button powers on the TV and the Receiver for watching Apple TV - the onboard led lights yellow.

A single click on the green button powers on the DVD Player, the TV and the Receiver for watching DVDs or listening to CDs the onboard led lights green.

A single click on the blue button powers on the Receiver to listen to the Radio - the onboard led lights blue.

A single click on the black button powers off everything - the onboard led lights white.

### DeepSleep
The system goes to deep sleep after a command is executed - the onboard led goes off.

To wake up from deep sleep the onboard button must be clicked - the onboard led lights white.