feat(wokwi-max7219-matrix): arduino uno test

Author: urish

.github/workflows/wokwi-test.yml

@@ -46,6 +46,9 @@ jobs:
           - name: led-ring-uno
             path: wokwi-led-ring/neopixel-uno
             scenario: neopixel.test.yaml
+          - name: max7219-uno
+            path: wokwi-max7219-matrix/max7219-uno
+            scenario: max7219.test.yaml
           - name: microsd-card-esp32
             path: wokwi-microsd-card/sd-esp32
             scenario: sd.test.yaml

README.md

@@ -20,6 +20,8 @@ This repository contains a set of test projects for many Wokwi parts. The tests
   - [ESP32-C3 + I2C](./wokwi-lcd1602/lcd-i2c-esp32-c3/)
 - wokwi-led-ring
   - [Arduino Uno](./wokwi-led-ring/neopixel-uno/)
+- wokwi-max7219-matrix
+  - [Arduino Uno](./wokwi-max7219-matrix/max7219-uno/)
 - wokwi-micro-sd
   - [ESP32](./wokwi-micro-sd/sd-esp32/)
 - wokwi-photoresistor-sensor

wokwi-max7219-matrix/max7219-uno/diagram.json

@@ -0,0 +1,22 @@
+{
+  "version": 1,
+  "author": "Uri Shaked",
+  "editor": "wokwi",
+  "parts": [
+    { "type": "wokwi-arduino-uno", "id": "uno", "top": 106.2, "left": 393, "attrs": {} },
+    {
+      "type": "wokwi-max7219-matrix",
+      "id": "m1",
+      "top": 0,
+      "left": 44.71,
+      "attrs": { "chain": "8" }
+    }
+  ],
+  "connections": [
+    [ "uno:5V", "m1:V+", "red", [ "v30", "*", "h50" ] ],
+    [ "uno:10", "m1:CS", "green", [ "v-25", "*", "h20" ] ],
+    [ "uno:11", "m1:DIN", "orange", [ "v-15", "*", "h30" ] ],
+    [ "uno:13", "m1:CLK", "blue", [ "v-35", "*", "h10" ] ],
+    [ "uno:GND.2", "m1:GND", "black", [ "v20", "*", "h40" ] ]
+  ]
+}

wokwi-max7219-matrix/max7219-uno/max7219.test.yaml

@@ -0,0 +1,9 @@
+version: 1
+name: 'MAX7219 Dot Matrix Test'
+author: 'Uri Shaked'
+
+steps:
+  - wait-serial: 'Display ready.'
+  - take-screenshot:
+      part-id: 'm1'
+      compare-with: 'screenshots/max7219.png'

wokwi-max7219-matrix/max7219-uno/platformio.ini

@@ -0,0 +1,6 @@
+[env:uno]
+platform = atmelavr
+board = uno
+framework = arduino
+lib_deps =
+    majicdesigns/MD_Parola@3.7.3

wokwi-max7219-matrix/max7219-uno/screenshots/max7219.png

@@ -0,0 +1,22 @@
+#include <MD_Parola.h>
+#include <MD_MAX72xx.h>
+#include <SPI.h>
+
+#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
+#define MAX_DEVICES 8
+
+#define CLK_PIN   13
+#define DATA_PIN  11
+#define CS_PIN    10
+
+MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
+
+void setup(void) {
+  Serial.begin(115200);
+  P.begin();
+  P.print(" Hello, Wokwi!");
+  Serial.println("Display ready.");
+}
+
+void loop(void) {
+}

wokwi-max7219-matrix/max7219-uno/src/main.cpp

@@ -0,0 +1,4 @@
+[wokwi]
+version = 1
+firmware = '.pio/build/uno/firmware.elf'
+elf = '.pio/build/uno/firmware.elf'