adding demo code for IoT button BFF

IoT_Button_BFF_Examples/CircuitPython_Basic_Example/code.py

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+# SPDX-FileCopyrightText: 2023 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""Basic IoT Button with NeoPixel BFF Example"""
+import time
+import board
+from digitalio import DigitalInOut, Direction, Pull
+from rainbowio import colorwheel
+import neopixel
+
+# setup onboard NeoPixel
+pixel_pin = board.A3
+num_pixels = 1
+
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False)
+
+# setup onboard button
+switch = DigitalInOut(board.A2)
+switch.direction = Direction.INPUT
+switch.pull = Pull.UP
+
+# rainbow cycle function
+def rainbow_cycle(wait):
+    for j in range(255):
+        for i in range(num_pixels):
+            rc_index = (i * 256 // num_pixels) + j
+            pixels[i] = colorwheel(rc_index & 255)
+        pixels.show()
+        time.sleep(wait)
+
+while True:
+    # run rainbow cycle animation
+    rainbow_cycle(0)
+
+    # if the button is not pressed..
+    if switch.value:
+        # neopixel brightness is zero and appears to be "off"
+        pixels.brightness = 0
+    # if the button is pressed..
+    else:
+        # neopixel brightness is 0.3 and rainbow animation is visible
+        pixels.brightness = 0.3

IoT_Button_BFF_Examples/CircuitPython_Simple_IO_Example/code.py

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+# SPDX-FileCopyrightText: 2023 Liz Clark for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+"""Simple Adafruit IO Example for IoT Button with NeoPixel BFF"""
+import os
+import time
+import ssl
+import wifi
+import socketpool
+import microcontroller
+import board
+from digitalio import DigitalInOut, Direction, Pull
+import neopixel
+import adafruit_requests
+from adafruit_io.adafruit_io import IO_HTTP, AdafruitIO_RequestError
+
+# setup onboard button
+switch = DigitalInOut(board.A2)
+switch.direction = Direction.INPUT
+switch.pull = Pull.UP
+
+# setup onboard NeoPixel
+pixel_pin = board.A3
+num_pixels = 1
+
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.3, auto_write=False)
+
+# neopixel status colors
+RED = (255, 0, 0)
+GREEN = (0, 255, 0)
+BLUE = (0, 0, 255)
+
+# red until connecting
+pixels.fill(RED)
+pixels.show()
+
+wifi.radio.connect(os.getenv('CIRCUITPY_WIFI_SSID'), os.getenv('CIRCUITPY_WIFI_PASSWORD'))
+
+aio_username = os.getenv('aio_username')
+aio_key = os.getenv('aio_key')
+
+pool = socketpool.SocketPool(wifi.radio)
+requests = adafruit_requests.Session(pool, ssl.create_default_context())
+# Initialize an Adafruit IO HTTP API object
+io = IO_HTTP(aio_username, aio_key, requests)
+print("connected to io")
+# blue when talking to IO
+pixels.fill(BLUE)
+pixels.show()
+
+try:
+    # get feed
+    button_feed = io.get_feed("buttonbff")
+except AdafruitIO_RequestError:
+    # if no feed exists, create one
+    button_feed = io.create_new_feed("buttonbff")
+
+# green once connected
+pixels.fill(GREEN)
+pixels.show()
+
+# button press count sent to IO
+count = 0
+
+while True:
+    try:
+		# if the button is pressed..
+        if not switch.value:
+            # blue when talking to IO
+            pixels.fill(BLUE)
+            pixels.show()
+			# increase by 1 with press
+            count += 1
+			# send count to feed
+            io.send_data(button_feed["key"], count)
+            print("sent %d" % count)
+            print()
+			# delay
+            time.sleep(5)
+        else:
+            # green if connected
+            pixels.fill(GREEN)
+            pixels.show()
+
+    # pylint: disable=broad-except
+    # any errors, reset board
+    except Exception as e:
+        # neopixels red with an error
+        pixels.fill(RED)
+        pixels.show()
+        print("Error:\n", str(e))
+        print("Resetting microcontroller in 10 seconds")
+        time.sleep(10)
+        microcontroller.reset()

IoT_Button_BFF_Examples/adafruitIO_iotButtonNeoPixelBFF/adafruitIO_iotButtonNeoPixelBFF.ino

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+// SPDX-FileCopyrightText: 2016 Todd Treece, Adapted 2023 Liz Clark for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+// Adafruit IO IoT Button with NeoPixel BFF Demo
+//
+// Adafruit invests time and resources providing this open source code.
+// Please support Adafruit and open source hardware by purchasing
+// products from Adafruit!
+//
+// Written by Todd Treece for Adafruit Industries
+// Copyright (c) 2016 Adafruit Industries
+// Licensed under the MIT license.
+//
+// All text above must be included in any redistribution.
+
+/************************** Configuration ***********************************/
+
+// edit the config.h tab and enter your Adafruit IO credentials
+// and any additional configuration needed for WiFi, cellular,
+// or ethernet clients.
+#include "config.h"
+#include <Adafruit_NeoPixel.h>
+
+/************************ Example Starts Here *******************************/
+
+#define BUTTON_PIN A2
+#define LED_PIN    A3
+#define LED_COUNT 1
+Adafruit_NeoPixel pixel(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
+
+// button state
+bool current = false;
+bool last = false;
+
+// set up the 'digital' feed
+AdafruitIO_Feed *digital = io.feed("digital");
+
+void setup() {
+  pixel.begin();
+  pixel.show();            
+  pixel.setBrightness(50); 
+  pixel.setPixelColor(0, pixel.Color(150, 0, 0));
+  pixel.show();
+
+  // set button pin as an input
+  pinMode(BUTTON_PIN, INPUT);
+
+  // start the serial connection
+  Serial.begin(115200);
+
+  // wait for serial monitor to open
+  while(! Serial);
+
+  // connect to io.adafruit.com
+  Serial.print("Connecting to Adafruit IO");
+  io.connect();
+
+  // wait for a connection
+  while(io.status() < AIO_CONNECTED) {
+    Serial.print(".");
+    delay(500);
+  }
+
+  // we are connected
+  Serial.println();
+  Serial.println(io.statusText());
+  pixel.setPixelColor(0, pixel.Color(0, 150, 0));
+  pixel.show();
+
+}
+
+void loop() {
+
+  // io.run(); is required for all sketches.
+  // it should always be present at the top of your loop
+  // function. it keeps the client connected to
+  // io.adafruit.com, and processes any incoming data.
+  io.run();
+
+  // grab the current state of the button.
+  // we have to flip the logic because we are
+  // using a pullup resistor.
+  if(digitalRead(BUTTON_PIN) == LOW){
+    current = true;
+    pixel.setPixelColor(0, pixel.Color(0, 0, 150));
+    pixel.show();
+  }
+  else {
+    current = false;
+    pixel.setPixelColor(0, pixel.Color(0, 150, 0));
+    pixel.show();
+  }
+  // return if the value hasn't changed
+  if(current == last)
+    return;
+
+  // save the current state to the 'digital' feed on adafruit io
+  Serial.print("sending button -> ");
+  Serial.println(current);
+  digital->save(current);
+
+  // store last button state
+  last = current;
+
+}

IoT_Button_BFF_Examples/adafruitIO_iotButtonNeoPixelBFF/config.h

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+// SPDX-FileCopyrightText: 2016 Todd Treece, Adapted 2023 Liz Clark for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+/************************ Adafruit IO Config *******************************/
+
+// visit io.adafruit.com if you need to create an account,
+// or if you need your Adafruit IO key.
+#define IO_USERNAME "your-username-here"
+#define IO_KEY "your-key-here"
+
+/******************************* WIFI **************************************/
+
+// the AdafruitIO_WiFi client will work with the following boards:
+//   - HUZZAH ESP8266 Breakout -> https://www.adafruit.com/products/2471
+//   - Feather HUZZAH ESP8266 -> https://www.adafruit.com/products/2821
+//   - Feather HUZZAH ESP32 -> https://www.adafruit.com/product/3405
+//   - Feather M0 WiFi -> https://www.adafruit.com/products/3010
+//   - Feather WICED -> https://www.adafruit.com/products/3056
+//   - Adafruit PyPortal -> https://www.adafruit.com/product/4116
+//   - Adafruit Metro M4 Express AirLift Lite ->
+//   https://www.adafruit.com/product/4000
+//   - Adafruit AirLift Breakout -> https://www.adafruit.com/product/4201
+//   - Adafruit AirLift Shield -> https://www.adafruit.com/product/4285
+//   - Adafruit AirLift FeatherWing -> https://www.adafruit.com/product/4264
+
+#define WIFI_SSID "your-ssid-here"
+#define WIFI_PASS "your-ssid-password-here"
+
+// uncomment the following line if you are using airlift
+// #define USE_AIRLIFT
+
+// uncomment the following line if you are using winc1500
+// #define USE_WINC1500
+
+// uncomment the following line if you are using mrk1010 or nano 33 iot
+//#define ARDUINO_SAMD_MKR1010
+
+// comment out the following lines if you are using fona or ethernet
+#include "AdafruitIO_WiFi.h"
+
+#if defined(USE_AIRLIFT) || defined(ADAFRUIT_METRO_M4_AIRLIFT_LITE) ||         \
+    defined(ADAFRUIT_PYPORTAL)
+// Configure the pins used for the ESP32 connection
+#if !defined(SPIWIFI_SS) // if the wifi definition isnt in the board variant
+// Don't change the names of these #define's! they match the variant ones
+#define SPIWIFI SPI
+#define SPIWIFI_SS 10 // Chip select pin
+#define NINA_ACK 9    // a.k.a BUSY or READY pin
+#define NINA_RESETN 6 // Reset pin
+#define NINA_GPIO0 -1 // Not connected
+#endif
+AdafruitIO_WiFi io(IO_USERNAME, IO_KEY, WIFI_SSID, WIFI_PASS, SPIWIFI_SS,
+                   NINA_ACK, NINA_RESETN, NINA_GPIO0, &SPIWIFI);
+#else
+AdafruitIO_WiFi io(IO_USERNAME, IO_KEY, WIFI_SSID, WIFI_PASS);
+#endif
+/******************************* FONA **************************************/
+
+// the AdafruitIO_FONA client will work with the following boards:
+//   - Feather 32u4 FONA -> https://www.adafruit.com/product/3027
+
+// uncomment the following two lines for 32u4 FONA,
+// and comment out the AdafruitIO_WiFi client in the WIFI section
+// #include "AdafruitIO_FONA.h"
+// AdafruitIO_FONA io(IO_USERNAME, IO_KEY);
+
+/**************************** ETHERNET ************************************/
+
+// the AdafruitIO_Ethernet client will work with the following boards:
+//   - Ethernet FeatherWing -> https://www.adafruit.com/products/3201
+
+// uncomment the following two lines for ethernet,
+// and comment out the AdafruitIO_WiFi client in the WIFI section
+// #include "AdafruitIO_Ethernet.h"
+// AdafruitIO_Ethernet io(IO_USERNAME, IO_KEY);

IoT_Button_BFF_Examples/basic_IoTButtonExample/basic_IoTButtonExample.ino

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+// SPDX-FileCopyrightText: 2023 Liz Clark for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+// Basic IoT Button with NeoPixel BFF Demo
+
+#include <Adafruit_NeoPixel.h>
+
+#define LED_PIN    A3
+#define BUTTON_PIN A2
+#define LED_COUNT 1
+
+int buttonState = 0;
+
+Adafruit_NeoPixel pixel(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
+
+void setup() {
+  pinMode(BUTTON_PIN, INPUT);
+  pixel.begin();
+  pixel.show();            
+  pixel.setBrightness(50); 
+}
+
+void loop() {
+  //pixel.clear();
+  buttonState = digitalRead(BUTTON_PIN);
+
+  if(buttonState == HIGH) {      
+    pixel.setPixelColor(0, pixel.Color(150, 0, 0));
+    pixel.show();
+  }
+
+  if(buttonState == LOW) {
+    pixel.setPixelColor(0, pixel.Color(0, 0, 0));
+    pixel.show();
+  }
+
+}