fix pumps

Took 11 minutes

src/MyGPIO.ts

@@ -0,0 +1,28 @@
+import GPIO from "rpi-gpio";
+
+export class MyGPIO {
+    static setup(pin: number, direction): Promise<void> {
+        return new Promise((resolve, reject) => {
+            GPIO.setup(pin, direction, (err) => {
+                if (err) {
+                    reject();
+                    return;
+                }
+                resolve();
+            });
+        })
+    }
+
+    static write(pin: number, state: boolean): Promise<void> {
+        return new Promise((resolve, reject) => {
+            GPIO.write(pin, state, (err) => {
+                if(err)
+                {
+                    reject();
+                    return;
+                }
+                resolve();
+            });
+        });
+    }
+}