From 28c7670bba135e67e244d63e03c6ef2128677c5e Mon Sep 17 00:00:00 2001
From: Yevgen Muntyan <muntyan@fastmail.fm>
Date: Sun, 3 Jun 2018 22:17:03 -0700
Subject: [PATCH] Add definitions for Gpio.glitchFilter() and
 pigpio.configureSocketPort()

---
 types/pigpio/index.d.ts      | 18 ++++++++++++++++--
 types/pigpio/pigpio-tests.ts | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/types/pigpio/index.d.ts b/types/pigpio/index.d.ts
index ea9a312286..79d0ebe0f9 100644
--- a/types/pigpio/index.d.ts
+++ b/types/pigpio/index.d.ts
@@ -160,15 +160,21 @@ export class Gpio extends NodeJS.EventEmitter {
     disableInterrupt(): Gpio;
 
     /**
-     * Enables alerts for the GPIO.
+     * Enables alerts for the GPIO. Returns this.
      */
     enableAlert(): Gpio;
 
     /**
-     * Disables aterts for the GPIO.
+     * Disables aterts for the GPIO. Returns this.
      */
     disableAlert(): Gpio;
 
+    /**
+     * Sets a glitch filter on a GPIO. Returns this.
+     * @param steady    Time, in microseconds, during which the level must be stable. Maximum value: 300000
+     */
+    glitchFilter(steady: number): Gpio;
+
     /*----------------------*
      * mode
      *----------------------*/
@@ -410,3 +416,11 @@ export function terminate(): void;
  * @param peripheral    an unsigned integer specifying the peripheral for timing (CLOCK_PWM or CLOCK_PCM)
  */
 export function configureClock(microseconds: number, peripheral: number): void;
+
+/**
+ * Configures pigpio to use the specified socket port.
+ * The default setting is to use port 8888.
+ * If configureSocketPort is called, it must be called before creating Gpio objects.
+ * @param port          an unsigned integer specifying the pigpio socket port number
+ */
+export function configureSocketPort(port: number): void;
diff --git a/types/pigpio/pigpio-tests.ts b/types/pigpio/pigpio-tests.ts
index a4679e57f9..90e7d4485d 100644
--- a/types/pigpio/pigpio-tests.ts
+++ b/types/pigpio/pigpio-tests.ts
@@ -5,6 +5,7 @@ import * as assert from 'assert';
     const Gpio = pigpio.Gpio;
 
     pigpio.configureClock(1, pigpio.CLOCK_PWM);
+    pigpio.configureSocketPort(23456);
 
     const led = new Gpio(18, {
         mode: Gpio.OUTPUT,
@@ -878,3 +879,37 @@ import * as assert from 'assert';
         clearInterval(iv);
     }, 2000);
 })();
+
+(function gpio_glitch_filter(): void {
+    const Gpio = pigpio.Gpio;
+    const input = new Gpio(7, {
+        mode: Gpio.INPUT,
+        pullUpDown: Gpio.PUD_OFF,
+        alert: true
+    });
+    const output = new Gpio(8, {
+      mode: Gpio.OUTPUT
+    });
+    let count = 0;
+
+    output.digitalWrite(0);
+    input.glitchFilter(50);
+    input.on('alert', (level, tick) => {
+        if (level === 1) {
+            count++;
+            console.log('  rising edge, count=' + count);
+        }
+    });
+
+    output.trigger(30, 1); // alert function should not be executed (blocked by glitchFilter)
+
+    setTimeout(() => {
+        output.trigger(70, 1); // alert function should be executed
+    }, 500);
+
+    setTimeout(() => {
+        assert.strictEqual(count, 1, 'expected 1 alert function call instead of ' + count);
+        console.log("  success...");
+        process.exit(0);
+    }, 1000);
+})();