chore: import local project into Gitea

2026-05-20 10:04:29 -07:00
commit 0969724f16
7 changed files with 420 additions and 0 deletions
--- a/example.code
+++ b/example.code
@@ -0,0 +1,128 @@
+#include <WiFi.h>
+#include <HTTPClient.h>
+#include <ArduinoJson.h>
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+// OLED config
+#define SCREEN_WIDTH 128
+#define SCREEN_HEIGHT 64
+#define OLED_RESET    -1
+#define I2C_SDA 21
+#define I2C_SCL 22
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+
+// WiFi
+const char* ssid = "your wifi id";
+const char* password = "your wifi password";
+const String gemini_api_key = "your api key";
+
+// MAX9814 microphone input pin
+#define MIC_PIN 34
+
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+
+  Wire.begin(I2C_SDA, I2C_SCL);
+  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
+    Serial.println("OLED init failed!");
+    while (1);
+  }
+
+  displayMessage("Connecting WiFi...");
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  displayMessage("WiFi connected!");
+  pinMode(MIC_PIN, INPUT);
+  delay(500);
+  displayMessage("Ready! Speak loud...");
+}
+
+void loop() {
+  static unsigned long lastTrigger = 0;
+
+  int micValue = analogRead(MIC_PIN);
+  Serial.println(micValue);
+
+  if (micValue > 1500 && millis() - lastTrigger > 5000) {
+    lastTrigger = millis();
+
+    displayMessage("Detecting...");
+
+    String response = askGemini("who are you.");
+    displayMultilineText(response);
+  }
+
+  delay(100);
+}
+
+void displayMessage(String msg) {
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(SSD1306_WHITE);
+  display.setCursor(0, 0);
+  display.println(msg);
+  display.display();
+}
+
+void displayMultilineText(String text) {
+  display.clearDisplay();
+  display.setTextSize(1);
+  display.setTextColor(SSD1306_WHITE);
+  display.setCursor(0, 0);
+
+  int maxCharsPerLine = 21;
+  int lineHeight = 10;
+  int y = 0;
+
+  while (text.length() > 0 && y < SCREEN_HEIGHT) {
+    String line = text.substring(0, maxCharsPerLine);
+    text = text.substring(min((unsigned int)maxCharsPerLine, text.length()));
+    display.setCursor(0, y);
+    display.println(line);
+    y += lineHeight;
+  }
+
+  display.display();
+}
+
+// Gemini API call
+String askGemini(String prompt) {
+  HTTPClient http;
+  String endpoint = "https://generativelanguage.googleapis.com/v1/models/gemini-1.5-flash-002:generateContent?key=" + gemini_api_key;
+  http.begin(endpoint);
+  http.addHeader("Content-Type", "application/json");
+
+  prompt.replace("\"", "\\\"");
+
+  String requestBody = "{ \"contents\": [ { \"parts\": [ { \"text\": \"" + prompt + "\" } ] } ] }";
+  int code = http.POST(requestBody);
+  String reply = "";
+
+  if (code == 200) {
+    String payload = http.getString();
+    StaticJsonDocument<2048> doc;
+    DeserializationError error = deserializeJson(doc, payload);
+
+    if (!error) {
+      reply = doc["candidates"][0]["content"]["parts"][0]["text"].as<String>();
+      reply.replace("\\n", "\n");
+    } else {
+      Serial.println("JSON Error: " + String(error.c_str()));
+      reply = "I am Gemini, your AI assistant.";
+    }
+  } else {
+    Serial.println("Gemini API error: " + String(code));
+    // Fallback reply when API fails
+    reply = "I am Gemini, your AI assistant.";
+  }
+
+  http.end();
+  return reply;
+}