chirimen-oh · kou029w · Feb 13, 2020 · Feb 12, 2020 · Feb 12, 2020 · Feb 12, 2020
diff --git a/examples/pcf8591/index.html b/examples/pcf8591/index.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, user-scalable=no, initial-scale=1"
+    />
+    <title>i2c-PCF8591</title>
+    <script src="https://r.chirimen.org/polyfill.js"></script>
+    <script src="./main.js" type="module"></script>
+    <style>
+      p {
+        color: blue;
+        text-align: center;
+        font-size: 24px;
+      }
+
+      img {
+        display: block;
+        margin-left: auto;
+        margin-right: auto;
+      }
+    </style>
+  </head>
+
+  <body>
+    <p>
+      <a>PCF8591</a>
+    </p>
+    <img src="./schematic.png" height="400px" />
+    <p id="value">initializing...</p>
+    <p>
+      DAC Voltage (Range: 0V - 3.3V)<br />
+      <input type="number" name="voltage" id="voltage" value="3.3" />V
+      <input type="button" value="Set" id="setVoltage" />
+    </p>
+  </body>
+</html>
diff --git a/examples/pcf8591/main.js b/examples/pcf8591/main.js
@@ -0,0 +1,35 @@
+import PCF8591 from "https://unpkg.com/@chirimen/pcf8591?module";
+
+main();
+
+let pcf8591;
+let dacVoltage;
+
+async function main() {
+  const value = document.getElementById("value");
+  const i2cAccess = await navigator.requestI2CAccess();
+  const port = i2cAccess.ports.get(1);
+  pcf8591 = new PCF8591(port, 0x48);
+  await pcf8591.init();
+  dacVoltage = document.getElementById("voltage").value;
+  await pcf8591.setDAC(dacVoltage);
+
+  while (true) {
+    let output = "";
+
+    // PCF8591 has 4 channels
+    for (let channel = 0; channel < 4; channel++) {
+      const voltage = await pcf8591.readADC(channel);
+      output += `CH${channel}: ${voltage.toFixed(3)}V<br>`;
+    }
+    value.innerHTML = output;
+
+    await sleep(500);
+  }
+}
+
+async function setDACVoltage() {
+  dacVoltage = document.getElementById("voltage").value;
+  await pcf8591.setDAC(dacVoltage);
+}
+document.getElementById("setVoltage").addEventListener("click", setDACVoltage);
diff --git a/examples/pcf8591/package.json b/examples/pcf8591/package.json
@@ -0,0 +1,5 @@
+{
+  "name": "i2c-pcf8591-example",
+  "version": "1.0.0",
+  "private": true
+}
diff --git a/examples/pcf8591/schematic.png b/examples/pcf8591/schematic.png
diff --git a/node-examples/pcf8591/main.js b/node-examples/pcf8591/main.js
@@ -0,0 +1,29 @@
+const { requestI2CAccess } = require("node-web-i2c");
+const PCF8591 = require("@chirimen/pcf8591");
+const { promisify } = require("util");
+const sleep = promisify(setTimeout);
+
+main();
+
+async function main() {
+  const i2cAccess = await requestI2CAccess();
+  const port = i2cAccess.ports.get(1);
+  const pcf8591 = new PCF8591(port, 0x48);
+  await pcf8591.init();
+
+  // Set DAC voltage (Range: 0V - 3.3V)
+  await pcf8591.setDAC(3.3);
+
+  while (true) {
+    let output = "";
+
+    // PCF8591 has 4 channels
+    for (let channel = 0; channel < 4; channel++) {
+      const voltage = await pcf8591.readADC(channel);
+      output += `CH${channel}:${voltage.toFixed(3)}V `;
+    }
+    console.log(output);
+
+    await sleep(500);
+  }
+}
diff --git a/node-examples/pcf8591/package.json b/node-examples/pcf8591/package.json
@@ -0,0 +1,9 @@
+{
+  "name": "i2c-pcf8591-node-example",
+  "version": "1.0.0",
+  "private": true,
+  "dependencies": {
+    "@chirimen/pcf8591": "latest",
+    "node-web-i2c": "latest"
+  }
+}
diff --git a/node-examples/pcf8591/readme.md b/node-examples/pcf8591/readme.md
@@ -0,0 +1,5 @@
+# PCF8591 8bit AD,DA コンバーター
+
+## 配線図
+
+![配線図](./schematic.png "schematic")
diff --git a/node-examples/pcf8591/schematic.png b/node-examples/pcf8591/schematic.png