From 737a2e2fd3585e410ddad3529cb9d4491464a42f Mon Sep 17 00:00:00 2001
From: norman-andrians <norman25.na@gmail.com>
Date: Tue, 5 Mar 2024 00:50:49 +0700
Subject: [PATCH] servo and photoresistor in http routes

---
 src/controller/photoresistor.ts | 15 +++++++++++++++
 src/controller/servo.ts         | 22 ++++++++++++++++++++++
 src/promises/index.ts           |  2 +-
 src/routes/api.ts               |  8 ++++++++
 4 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 src/controller/photoresistor.ts

diff --git a/src/controller/photoresistor.ts b/src/controller/photoresistor.ts
new file mode 100644
index 0000000..4f67a95
--- /dev/null
+++ b/src/controller/photoresistor.ts
@@ -0,0 +1,15 @@
+import { Request, Response } from "express";
+import { board } from "../setup";
+import { analogRead } from "../promises";
+
+export async function readResistor (req: Request, res: Response): Promise<Response<string, any>> {
+    const { p } = req.params;
+    const pin: string = req.params.p.startsWith("A") ? req.params.p.slice(0, p.length) : req.params.p;
+
+    const resistance = await analogRead(board, pin);
+
+    return res.status(200).json({
+        status: 200,
+        message: `Analog pin ${p} resistance as ${resistance}°`
+    });
+}
\ No newline at end of file
diff --git a/src/controller/servo.ts b/src/controller/servo.ts
index e69de29..7eb19c7 100644
--- a/src/controller/servo.ts
+++ b/src/controller/servo.ts
@@ -0,0 +1,22 @@
+import { Request, Response } from "express";
+import { board } from "../setup";
+
+export function rotateServo (req: Request, res: Response): Response<string, any> {
+    const { p } = req.params;
+    const pin: string = req.params.p.startsWith("A") ? req.params.p.slice(0, p.length) : req.params.p;
+    const angle: number = Number.parseInt(req.params.ang);
+
+    if (Number.isNaN(angle)) {
+        return res.status(400).json({
+            status: 400,
+            message: 'Invalid angle param, it should be integer'
+        });
+    }
+
+    board.servoWrite(pin, angle);
+
+    return res.status(200).json({
+        status: 200,
+        message: `Pin ${p} rotate as ${angle}°`
+    });
+}
\ No newline at end of file
diff --git a/src/promises/index.ts b/src/promises/index.ts
index 75fed50..ae8ffd5 100644
--- a/src/promises/index.ts
+++ b/src/promises/index.ts
@@ -11,7 +11,7 @@ export function digitalRead (board: Board, pin: number): Promise<number> {
     });
 }
 
-export function analogRead (board: Board, pin: number): Promise<number> {
+export function analogRead (board: Board, pin: string): Promise<number> {
     return new Promise((resolve, reject) => {
         board.analogRead(pin, (val) => {
             resolve(val);
diff --git a/src/routes/api.ts b/src/routes/api.ts
index e14bfd8..8751bb9 100644
--- a/src/routes/api.ts
+++ b/src/routes/api.ts
@@ -4,6 +4,9 @@ import { Router } from "express";
 import { readLed, readRgbLed, writeLed, writeRgbLed } from "../controller/led";
 import { readPin, setPin } from "../controller/pin";
 import { piezoNoTone, piezoPlayNotes, piezoTone } from "../controller/piezo";
+import { rotateServo } from "../controller/servo";
+import { readResistor } from "../controller/photoresistor";
+
 import { isPinNumeric } from "../middleware/pin";
 
 const router: Router = Router();
@@ -25,4 +28,9 @@ router.patch('/piezo/', piezoTone);
 router.patch('/piezo/stop/', piezoNoTone);
 router.patch('/piezo/music/', piezoPlayNotes);
 
+// for real-time communication is deprecated and not recommended
+// use other protocol like websocket instead
+router.patch('/servo/:p/:m', rotateServo);
+router.get('/photoresistor/:p', readResistor);
+
 export default router;
\ No newline at end of file