From 14237409185d645cb048aaf71f7ac294b81fe6e9 Mon Sep 17 00:00:00 2001
From: Malte Schmitz <malte@schmitz-sh.de>
Date: Sat, 28 May 2022 22:10:52 +0200
Subject: [PATCH] Add I/O and scheduler
---
neopixel_test.txt | 37 +++++++++++++++++++++++
platformio.ini | 1 +
src/main.cpp | 77 +++++++++++++++++++++++++++++++++++++++++------
3 files changed, 106 insertions(+), 9 deletions(-)
create mode 100644 neopixel_test.txt
diff --git a/neopixel_test.txt b/neopixel_test.txt
new file mode 100644
index 0000000..7f28ef7
--- /dev/null
+++ b/neopixel_test.txt
@@ -0,0 +1,37 @@
+// Simple NeoPixel test. Lights just a few pixels at a time so a
+// 1m strip can safely be powered from Arduino 5V pin. Arduino
+// may nonetheless hiccup when LEDs are first connected and not
+// accept code. So upload code first, unplug USB, connect pixels
+// to GND FIRST, then +5V and digital pin 6, then re-plug USB.
+// A working strip will show a few pixels moving down the line,
+// cycling between red, green and blue. If you get no response,
+// might be connected to wrong end of strip (the end wires, if
+// any, are no indication -- look instead for the data direction
+// arrows printed on the strip).
+
+#include <Arduino.h>
+#include <Adafruit_NeoPixel.h>
+
+#define PIN 6
+#define N_LEDS 144
+
+Adafruit_NeoPixel strip = Adafruit_NeoPixel(N_LEDS, PIN, NEO_GRB + NEO_KHZ800);
+
+void setup() {
+ strip.begin();
+}
+
+static void chase(uint32_t c) {
+ for(uint16_t i=0; i<strip.numPixels()+4; i++) {
+ strip.setPixelColor(i , c); // Draw new pixel
+ strip.setPixelColor(i-4, 0); // Erase pixel a few steps back
+ strip.show();
+ delay(25);
+ }
+}
+
+void loop() {
+ chase(strip.Color(255, 0, 0)); // Red
+ chase(strip.Color(0, 255, 0)); // Green
+ chase(strip.Color(0, 0, 255)); // Blue
+}
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index af7eb17..7941300 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -15,5 +15,6 @@ framework = arduino
lib_deps =
Adafruit NeoPixel
+ TaskScheduler
upload_port = /dev/cu.wchusbserial1420
diff --git a/src/main.cpp b/src/main.cpp
index 9066008..48c5700 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,28 +1,87 @@
#include <Arduino.h>
#include <Adafruit_NeoPixel.h>
+#include <TaskScheduler.h>
#define NEOPIXEL_PIN 6
#define NEOPIXEL_LEN 105
+// Pin A and Pin B are connected if the button is pressed.
+// Pin A and Pin No are connected if no external button is connected.
+#define EXTERNAL_BUTTON_PIN_A 7
+#define EXTERNAL_BUTTON_PIN_B 9
+#define EXTERNAL_BUTTON_PIN_NO 8
+
+#define INTERNAL_BUTTON_PIN_A 10
+#define INTERNAL_BUTTON_PIN_B 11
+
Adafruit_NeoPixel pixels(NEOPIXEL_LEN, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);
+Scheduler scheduler;
+void handleButton();
+Task taskButton(TASK_IMMEDIATE, TASK_FOREVER, &handleButton);
+void handleStep();
+Task taskStep(25, TASK_FOREVER, &handleStep);
+
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
+
+ pinMode(EXTERNAL_BUTTON_PIN_A, OUTPUT);
+ digitalWrite(EXTERNAL_BUTTON_PIN_A, LOW);
+ pinMode(EXTERNAL_BUTTON_PIN_B, INPUT_PULLUP);
+ pinMode(EXTERNAL_BUTTON_PIN_NO, INPUT_PULLUP);
+ pinMode(INTERNAL_BUTTON_PIN_A, OUTPUT);
+ digitalWrite(INTERNAL_BUTTON_PIN_A, LOW);
+ pinMode(INTERNAL_BUTTON_PIN_B, INPUT_PULLUP);
+
pixels.begin();
+ scheduler.init();
+ scheduler.addTask(taskButton);
+ taskButton.enable();
+ scheduler.addTask(taskStep);
+ taskStep.enable();
}
-int pos = 0;
-
void loop() {
+ scheduler.execute();
+}
+
+uint32_t color = 0xFFFFFF;
+int position = 0;
+
+void show() {
for (int i = 0; i < NEOPIXEL_LEN; i++) {
- pixels.setPixelColor(i, 0xFFFFFF);
+ pixels.setPixelColor(i, 0);
+ }
+ for (int i = position; i < position + 10; i++) {
+ pixels.setPixelColor(i, color);
}
- pixels.setPixelColor(pos, 0xFF0000);
pixels.show();
- pos = (pos + 1) % NEOPIXEL_LEN;
+}
- digitalWrite(LED_BUILTIN, HIGH);
- delay(500);
- digitalWrite(LED_BUILTIN, LOW);
- delay(500);
+void handleButton() {
+ if (digitalRead(INTERNAL_BUTTON_PIN_B) == LOW) {
+ color = 0x0000FF;
+ } else if (digitalRead(EXTERNAL_BUTTON_PIN_NO) == LOW) {
+ color = 0xFF0000;
+ } else if (digitalRead(EXTERNAL_BUTTON_PIN_B) == LOW) {
+ color = 0x00FF00;
+ }
+ show();
+}
+
+boolean forward = true;
+void handleStep() {
+ if (forward) {
+ position = position + 1;
+ if (position > NEOPIXEL_LEN - 11) {
+ position = position - 2;
+ forward = false;
+ }
+ } else {
+ position = position - 1;
+ if (position < 0) {
+ position = 1;
+ forward = true;
+ }
+ }
}
--
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