feat(wokwi-dht22/dht22-pico): add test

Author: urish

.github/workflows/wokwi-test.yml

@@ -19,6 +19,9 @@ jobs:
           - name: dht22-esp32
             path: wokwi-dht22/dht22-esp32
             scenario: dht22.test.yaml
+          - name: dht22-pico
+            path: wokwi-dht22/dht22-pico
+            scenario: dht22.test.yaml
           - name: slide-potentiometer-uno
             path: wokwi-slide-potentiometer/pot-uno
             scenario: slide-potentiometer.test.yaml

wokwi-dht22/dht22-pico/dht22.test.yaml

@@ -0,0 +1,25 @@
+name: 'DHT22 Sensor Test (Pi Pico)'
+version: 1
+author: 'Uri Shaked'
+
+steps:
+  - wait-serial: 'DHT22 test (Pi Pico)'
+  # Wait for first reading
+  - delay: 500ms
+  # Check exact temperature and humidity values
+  - wait-serial: 'Humidity: 45.80%  Temperature: 23.50°C'
+  # Wait for second reading to confirm consistency
+  - delay: 500ms
+  - wait-serial: 'Humidity: 45.80%  Temperature: 23.50°C'
+  # Set new values
+  - set-control:
+      part-id: dht
+      control: temperature
+      value: 21.5
+  - set-control:
+      part-id: dht
+      control: humidity
+      value: 66.9
+  - delay: 500ms
+  # Check new values
+  - wait-serial: 'Humidity: 66.90%  Temperature: 21.50°C' 

wokwi-dht22/dht22-pico/diagram.json

@@ -0,0 +1,31 @@
+{
+  "version": 1,
+  "author": "Uri Shaked",
+  "editor": "wokwi",
+  "parts": [
+    {
+      "type": "wokwi-pi-pico",
+      "id": "pico",
+      "top": 0,
+      "left": 0,
+      "attrs": {}
+    },
+    {
+      "type": "wokwi-dht22",
+      "id": "dht",
+      "top": 100,
+      "left": 100,
+      "attrs": {
+        "temperature": "23.5",
+        "humidity": "45.8"
+      }
+    }
+  ],
+  "connections": [
+    ["pico:GP0", "$serialMonitor:RX", "", []],
+    ["pico:GP1", "$serialMonitor:TX", "", []],
+    ["pico:GP2", "dht:SDA", "green", ["v0"]],
+    ["pico:3V3", "dht:VCC", "red", ["v0"]],
+    ["pico:GND.1", "dht:GND", "black", ["v0"]]
+  ]
+}

wokwi-dht22/dht22-pico/platformio.ini

@@ -0,0 +1,9 @@
+[env:pico]
+platform = raspberrypi
+board = pico
+framework = arduino
+lib_deps =
+    adafruit/DHT sensor library@^1.4.4
+build_flags =
+    -D PICO_DEFAULT_UART_TX_PIN=0
+    -D PICO_DEFAULT_UART_RX_PIN=1

wokwi-dht22/dht22-pico/src/main.cpp

@@ -0,0 +1,32 @@
+#include <Arduino.h>
+#include <DHT.h>
+
+#define DHTPIN 2        // Digital pin connected to the DHT sensor
+#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
+
+DHT dht(DHTPIN, DHTTYPE);
+
+void setup() {
+  Serial1.begin(115200);
+  Serial1.println("DHT22 test (Pi Pico)");
+  dht.begin();
+}
+
+void loop() {
+  delay(500);
+
+  float h = dht.readHumidity();
+  float t = dht.readTemperature();
+
+  // Check if any reads failed and exit early (to try again)
+  if (isnan(h) || isnan(t)) {
+    Serial1.println("Failed to read from DHT sensor!");
+    return;
+  }
+
+  Serial1.print("Humidity: ");
+  Serial1.print(h);
+  Serial1.print("%  Temperature: ");
+  Serial1.print(t);
+  Serial1.println("°C");
+}

wokwi-dht22/dht22-pico/wokwi.toml

@@ -0,0 +1,4 @@
+[wokwi]
+version = 1
+firmware = '.pio/build/pico/firmware.uf2'
+elf = '.pio/build/pico/firmware.elf'