add a basic arduino program to respond to server's commands

catink123 · Jan 12, 2024 · d32e91b · d32e91b
1 parent a85b7c5
commit d32e91b
Showing 1 changed file with 38 additions and 0 deletions.
diff --git a/src/arduino_program/gate_control/gate_control.ino b/src/arduino_program/gate_control/gate_control.ino
@@ -0,0 +1,38 @@
+#include <ArduinoJson.h>
+const int capacity = 100;
+StaticJsonDocument<capacity> doc;
+bool state = false;
+
+void setup() {
+  Serial.begin(115200);
+  pinMode(13, OUTPUT);
+  digitalWrite(13, LOW);
+}
+
+void loop() {
+  if (Serial.available() > 0) {
+    String msg = Serial.readStringUntil('%');
+    // skip the message end character
+    Serial.read();
+
+    deserializeJson(doc, msg);
+    if (doc["type"] == "change_state" && doc["payload"] == true) {
+      digitalWrite(13, HIGH);
+      state = true;
+    } else if (doc["type"] == "change_state" && doc["payload"] == false) {
+      digitalWrite(13, LOW);
+      state = false;
+    } else if (doc["type"] == "query_state") {
+      DynamicJsonDocument dyn_doc(100);
+      dyn_doc["type"] = "query_state_result";
+      dyn_doc["payload"] = state;
+      String msg;
+      serializeJson(dyn_doc, msg);
+      msg += '%';
+
+      Serial.write(msg.c_str());
+    } else {
+      Serial.write("{\"type\": \"error\", \"payload\": \"unknown_command\"}%");
+    }
+  }
+}