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add more examples in section '02. Digital'
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‎sduino/examples/02.Digital/BlinkWithoutDelay/BlinkWithoutDelay.c‎

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/* Blink without Delay
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Turns on and off a light emitting diode (LED) connected to a digital
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pin, without using the delay() function. This means that other code
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can run at the same time without being interrupted by the LED code.
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The circuit:
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* LED attached from pin 3 to VCC.
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* Note: on the STM8103 breakout board, there is already an LED on the board
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that's attached to pin 3, so no hardware is needed for this example.
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created 2005
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by David A. Mellis
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modified 8 Feb 2010
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by Paul Stoffregen
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modified 11 Nov 2013
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by Scott Fitzgerald
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modified 13 Feb 2017 for use with sduino
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by Michael Mayer
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay
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*/
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#include <Arduino.h>
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// constants won't change. Used here to set a pin number :
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const int ledPin = 3; // the number of the LED pin
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// Variables will change :
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int ledState = LOW; // ledState used to set the LED
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// Generally, you should use "unsigned long" for variables that hold time
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// The value will quickly become too large for an int to store
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unsigned long previousMillis = 0; // will store last time LED was updated
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// constants won't change :
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const long interval = 1000; // interval at which to blink (milliseconds)
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void setup() {
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// set the digital pin as output:
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pinMode(ledPin, OUTPUT);
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}
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void loop() {
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// here is where you'd put code that needs to be running all the time.
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// check to see if it's time to blink the LED; that is, if the
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// difference between the current time and last time you blinked
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// the LED is bigger than the interval at which you want to
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// blink the LED.
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unsigned long currentMillis = millis();
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if (currentMillis - previousMillis >= interval) {
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// save the last time you blinked the LED
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previousMillis = currentMillis;
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// if the LED is off turn it on and vice-versa:
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if (ledState == LOW) {
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ledState = HIGH;
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} else {
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ledState = LOW;
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}
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// set the LED with the ledState of the variable:
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digitalWrite(ledPin, ledState);
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}
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}
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‎sduino/examples/02.Digital/BlinkWithoutDelay/BlinkWithoutDelay.txt‎

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Blinking an LED without using the delay() function.

‎sduino/examples/02.Digital/BlinkWithoutDelay/Makefile‎

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BOARD_TAG = stm8sblue
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include ../../../sduino.mk

‎sduino/examples/02.Digital/Button/Button.c‎

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/*
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Button
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Turns on and off a light emitting diode(LED) connected to digital
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pin 3, when pressing a pushbutton attached to pin 2.
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The circuit:
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* LED attached from pin 3 to VCC
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* pushbutton attached to pin 2 from +5V
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* 10K resistor attached to pin 2 from ground
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* Note: on the STM8S103 breakout board there is already an LED on the board
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attached to pin 3.
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created 2005
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by DojoDave <http://www.0j0.org>
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modified 30 Aug 2011
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by Tom Igoe
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modified 13 Feb 2017 for use with sduino
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by Michael Mayer
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/Button
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*/
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#include <Arduino.h>
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// constants won't change. They're used here to
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// set pin numbers:
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const int buttonPin = 2; // the number of the pushbutton pin
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const int ledPin = 3; // the number of the LED pin
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// variables will change:
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int buttonState = 0; // variable for reading the pushbutton status
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void setup() {
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// initialize the LED pin as an output:
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pinMode(ledPin, OUTPUT);
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// initialize the pushbutton pin as an input:
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pinMode(buttonPin, INPUT);
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}
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void loop() {
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// read the state of the pushbutton value:
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buttonState = digitalRead(buttonPin);
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// check if the pushbutton is pressed.
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// if it is, the buttonState is HIGH:
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if (buttonState == HIGH) {
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// turn LED on:
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digitalWrite(ledPin, HIGH);
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} else {
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// turn LED off:
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digitalWrite(ledPin, LOW);
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}
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}

‎sduino/examples/02.Digital/Button/Button.txt‎

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Use a pushbutton to control an LED.

‎sduino/examples/02.Digital/Button/Makefile‎

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BOARD_TAG = stm8sblue
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include ../../../sduino.mk

‎sduino/examples/02.Digital/Debounce/Debounce.c‎

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/*
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Debounce
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Each time the input pin goes from LOW to HIGH (e.g. because of a push-button
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press), the output pin is toggled from LOW to HIGH or HIGH to LOW. There's
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a minimum delay between toggles to debounce the circuit (i.e. to ignore
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noise).
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The circuit:
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* LED attached from pin 3 to VCC
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* pushbutton attached from pin 2 to +5V
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* 10K resistor attached from pin 2 to ground
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* Note: On the STM8S103 breakout board, there is already an LED on the board
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connected to pin 3, so you don't need any extra components for this example.
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created 21 November 2006
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by David A. Mellis
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modified 30 Aug 2011
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by Limor Fried
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modified 28 Dec 2012
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by Mike Walters
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modified 30 Aug 2016
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by Arturo Guadalupi
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modified 13 Feb 2017 for use with sduino
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by Michael Mayer
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/Debounce
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*/
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#include <Arduino.h>
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// constants won't change. They're used here to
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// set pin numbers:
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const int buttonPin = 2; // the number of the pushbutton pin
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const int ledPin = 3; // the number of the LED pin
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// Variables will change:
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int ledState = HIGH; // the current state of the output pin
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int buttonState; // the current reading from the input pin
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int lastButtonState = LOW; // the previous reading from the input pin
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// the following variables are unsigned long's because the time, measured in miliseconds,
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// will quickly become a bigger number than can be stored in an int.
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unsigned long lastDebounceTime = 0; // the last time the output pin was toggled
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unsigned long debounceDelay = 50; // the debounce time; increase if the output flickers
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void setup() {
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pinMode(buttonPin, INPUT);
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pinMode(ledPin, OUTPUT);
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// set initial LED state
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digitalWrite(ledPin, ledState);
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}
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void loop() {
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// read the state of the switch into a local variable:
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int reading = digitalRead(buttonPin);
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// check to see if you just pressed the button
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// (i.e. the input went from LOW to HIGH), and you've waited
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// long enough since the last press to ignore any noise:
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// If the switch changed, due to noise or pressing:
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if (reading != lastButtonState) {
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// reset the debouncing timer
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lastDebounceTime = millis();
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}
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if ((millis() - lastDebounceTime) > debounceDelay) {
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// whatever the reading is at, it's been there for longer
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// than the debounce delay, so take it as the actual current state:
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// if the button state has changed:
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if (reading != buttonState) {
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buttonState = reading;
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// only toggle the LED if the new button state is HIGH
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if (buttonState == HIGH) {
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ledState = !ledState;
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}
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}
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}
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// set the LED:
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digitalWrite(ledPin, ledState);
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// save the reading. Next time through the loop,
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// it'll be the lastButtonState:
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lastButtonState = reading;
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}
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‎sduino/examples/02.Digital/Debounce/Debounce.txt‎

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Read a pushbutton, filtering noise.

‎sduino/examples/02.Digital/Debounce/Makefile‎

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BOARD_TAG = stm8sblue
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include ../../../sduino.mk

‎sduino/examples/02.Digital/Debounce/button.png‎

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