NRF52 Series

Multiprotocol Bluetooth 5.3 SoC supporting Bluetooth Low Energy, Bluetooth mesh, NFC, Thread and Zigbee

The most sophisticated model in the nRF52 Series is the nRF52840 SoC. It overcomes the difficulties posed by complex applications that demand protocol concurrency and a wide range of peripherals and features.

It provides substantial RAM and Flash memory availability, which are necessities for such demanding workloads. The nRF52840 has full protocol concurrency and is completely multiprotocol capable. It has 2.4 GHz proprietary stacks and protocol support for Bluetooth LE, Bluetooth mesh, Thread, Zigbee, 802.15.4, and ANT.The 32-bit ARM® CortexTM-M4 CPU, with a floating point unit operating at 64 MHz, is the core of the nRF52840. For use in streamlined pairing and payment systems, it has an NFC-A Tag. The on-chip ARM TrustZone® CryptoCell cryptographic unit offers a wide variety of cryptographic choices that operate very quickly without the need for the CPU.

It has a wide range of digital peripherals and interfaces, including full-speed USB devices for data transfer and power supplies for battery recharging, high-speed SPI and QSPI for connecting to external flash and displays, PDM and I2S for digital microphones and audio, and many others. A smart on-chip adaptive power management technology is used to achieve exceptionally low energy consumption.

NOTE: Required Voltage for the PIN D0-D10 is 3.3v Logic, If you using a development board release by NORDIC, ADAFRUIT, SPARKFUN, OR SEEDUINO, should be run through using a regulator. Thus, any supply over 3.3v should run also through the 5V PIN, moreover, any sensor utilizing the use of I/O pins must be operated by 3.3v.

NORDIC – nRF52840 Dongle

SEEED – Seeed Studio XIAO nRF52840

Seeed Studio XIAO nRF52840 PinOut Diagram
nRF52 support requires at least Arduino IDE version 1.8.15! Please make sure you have an up to date version before proceeding with this guide!
Download the older Release version of Arduino : https://www.arduino.cc/en/software/OldSoftwareReleases (1.8.15)
Add the following board package link: https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json

ADAFRUIT – NRF5240 (Adafruit nRF52840 Feather)

AdaFruit nRF52840 Feather PinOut Diagram
nRF52 support requires at least Arduino IDE version 1.8.15! Please make sure you have an up to date version before proceeding with this guide!
Download the older Release version of Arduino : https://www.arduino.cc/en/software/OldSoftwareReleases (1.8.9)
Add the following board package link: https://adafruit.github.io/arduino-board-index/package_adafruit_index.json

SPARKFUN – SparkFun Pro nRF52840 Mini

SparkFun Pro nRF52840 Mini PinOut Diagram
nRF52 support requires at least Arduino IDE version 1.6.12! Please make sure you have an up to date version before proceeding with this guide!
Download the older Release version of Arduino : https://www.arduino.cc/en/software/OldSoftwareReleases (1.6.12)
Add the following board package link: https://github.com/adafruit/arduino-board-index/blob/gh-pages/package_adafruit_index.json

Required Components

Arduino IDE | PlatformIO
Test Boards : Nordic NRF5208 Development Board | Adafruit nRF5280 Feather | SparkFun Pro nRF52840 Mini | SeeedDuino – Seed Studio XIAO nRF52840
USB Cable (C or Micro) if your are building your own nRF52X board please refer to the download section.

Test Code

/*
 *  This example demonstrates how to use the Bluefruit
 *  library to both send and receive data to the
 *  nRF52840 via BLE.
 *  Using a BLE development app like Nordic's nRF Connect
 *  https://www.nordicsemi.com/eng/Products/Nordic-mobile-Apps/nRF-Connect-for-Mobile
 *  The BLE UART service can be written to to turn the
 *  on-board LED on/off, or read from to monitor the 
 *  status of the button.
 *  
*/

#include <bluefruit.h>

BLEUart bleuart; // uart over ble

// Define hardware: LED and Button pins and states
const int LED_PIN = 7;
#define LED_OFF LOW
#define LED_ON HIGH

const int BUTTON_PIN = 13;
#define BUTTON_ACTIVE LOW
int lastButtonState = -1;

void setup() {
  // Initialize hardware:
  Serial.begin(9600); // Serial is the USB serial port
  pinMode(LED_PIN, OUTPUT); // Turn on-board blue LED off
  digitalWrite(LED_PIN, LED_OFF);
  pinMode(BUTTON_PIN, INPUT);

  // Uncomment the code below to disable sharing
  // the connection LED on pin 7.
  //Bluefruit.autoConnLed(false);

  // Initialize Bluetooth:
  Bluefruit.begin();
  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
  Bluefruit.setTxPower(4);
  Bluefruit.setName("SparkFun_nRF52840");
  bleuart.begin();

  // Start advertising device and bleuart services
  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
  Bluefruit.Advertising.addTxPower();
  Bluefruit.Advertising.addService(bleuart);
  Bluefruit.ScanResponse.addName();

  Bluefruit.Advertising.restartOnDisconnect(true);
  // Set advertising interval (in unit of 0.625ms):
  Bluefruit.Advertising.setInterval(32, 244);
  // number of seconds in fast mode:
  Bluefruit.Advertising.setFastTimeout(30);
  Bluefruit.Advertising.start(0);  
}

void loop() {
  // If data has come in via BLE:
  if (bleuart.available()) {
    uint8_t c;
    // use bleuart.read() to read a character sent over BLE
    c = (uint8_t) bleuart.read();
    // Print out the character for debug purposes:
    Serial.write(c);

    // If the character is one of our expected values,
    // do something:
    switch (c) {
      // 0 number or character, turn the LED off:
      case 0:
      case '0':
        digitalWrite(LED_PIN, LED_OFF);
        break;
      // 1 number or character, turn the LED on:
      case 1:
      case '1':
        digitalWrite(LED_PIN, LED_ON);
        break;
      default:
        break;
    }
  }

  // If our button state has changed:
  int buttonState = digitalRead(BUTTON_PIN);
  if (buttonState != lastButtonState) {
    lastButtonState = buttonState;
    // Write the new button state to the bleuart TX char
    bleuart.write(!buttonState);
  }
}

* This example demonstrates how to use the Bluefruit

* library to both send and receive data to the

* nRF52840 via BLE.

* Using a BLE development app like Nordic's nRF Connect

* https://www.nordicsemi.com/eng/Products/Nordic-mobile-Apps/nRF-Connect-for-Mobile

* The BLE UART service can be written to to turn the

* on-board LED on/off, or read from to monitor the

* status of the button.

#include <bluefruit.h>

BLEUart bleuart; // uart over ble

// Define hardware: LED and Button pins and states

const int LED_PIN = 7;

#define LED_OFF LOW

#define LED_ON HIGH

const int BUTTON_PIN = 13;

#define BUTTON_ACTIVE LOW

int lastButtonState = -1;

void setup() {

// Initialize hardware:

Serial.begin(9600); // Serial is the USB serial port

pinMode(LED_PIN, OUTPUT); // Turn on-board blue LED off

digitalWrite(LED_PIN, LED_OFF);

pinMode(BUTTON_PIN, INPUT);

// Uncomment the code below to disable sharing

// the connection LED on pin 7.

//Bluefruit.autoConnLed(false);

// Initialize Bluetooth:

Bluefruit.begin();

// Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4

Bluefruit.setTxPower(4);

Bluefruit.setName("SparkFun_nRF52840");

bleuart.begin();

// Start advertising device and bleuart services

Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);

Bluefruit.Advertising.addTxPower();

Bluefruit.Advertising.addService(bleuart);

Bluefruit.ScanResponse.addName();

Bluefruit.Advertising.restartOnDisconnect(true);

// Set advertising interval (in unit of 0.625ms):

Bluefruit.Advertising.setInterval(32, 244);

// number of seconds in fast mode:

Bluefruit.Advertising.setFastTimeout(30);

Bluefruit.Advertising.start(0);

}

void loop() {

// If data has come in via BLE:

if (bleuart.available()) {

uint8_t c;

// use bleuart.read() to read a character sent over BLE

c = (uint8_t) bleuart.read();

// Print out the character for debug purposes:

Serial.write(c);

// If the character is one of our expected values,

// do something:

switch (c) {

// 0 number or character, turn the LED off:

case 0:

case '0':

digitalWrite(LED_PIN, LED_OFF);

break;

// 1 number or character, turn the LED on:

case 1:

case '1':

digitalWrite(LED_PIN, LED_ON);

break;

default:

break;

}

// If our button state has changed:

int buttonState = digitalRead(BUTTON_PIN);

if (buttonState != lastButtonState) {

lastButtonState = buttonState;

// Write the new button state to the bleuart TX char

bleuart.write(!buttonState);

}

Flashing CircuitPython

nRF52840 UF2 Bootloader, which is already available on your device, just copy and phase, USB device and can be used to flash CircuitPython firmware onto your nRF52840 Board. First thing first you need to set your nRF52840 bootload state, by double pressing the reset button or holding the PIN-13 down while clicking the reset button. you pc should look for an NRF52BOOT device that is similar to a USB thumb drive or removable USB drive. Just simply COPY & PHASE the UF2 file into NRF52BOOT then you may get a warning the file is too large just press the cancel button. Moreover, after the firmware is installed, a new drive will show on your PC should be CIRCUITPY, then just copy and phase CircuitPython files with the file extension of: BLICK.PY / blink.py to run your application.

Circuit Python Test Code

import time
import board
from digitalio import DigitalInOut, Direction, Pull

led = DigitalInOut(board.P0_07)
led.direction = Direction.OUTPUT

while True:
    led.value = False
    time.sleep(0.5)
    led.value = True
    time.sleep(0.5)

import time

import board

from digitalio import DigitalInOut, Direction, Pull

led = DigitalInOut(board.P0_07)

led.direction = Direction.OUTPUT

while True:

led.value = False

time.sleep(0.5)

led.value = True

time.sleep(0.5)

NRF Connect Application for | Android App | iOS App Store |

Downloads

For more reference

Arduino
- Arduino Core GitHub Repository — Home base for all of the core source, examples, and tools.
- SparkFun Board Definitions – SparkFun board definitions for the SparkFun Pro nRF52840 Mini.
- adafruit-nrfutil GitHub Repository — adafruit-nrfutil is the tool required to upload Arduino sketches to your nRF52840 via the bootloader. This is where the source code is stored and developed-upon.
CircuitPython
- CircuitPython API Reference — Exhaustive documentation hub for all CircuitPython API.
- CircuitPython GitHub Repository — Home base for all CircuitPython-related source and tools. Make sure to check out the ports/nrf directory for info specific to the nRF52840.
- Building CircuitPython Tutorial — If you want to build a CircuitPython variant of your own, give this a read.

Components

How to Wire the NRF52 Series (nRF52840) Multi Protocol Bluetooth / BLE 5, SOC

How to Wire the NRF52 Series (nRF52840) Multi Protocol Bluetooth / BLE 5, SOC

NRF52 Series

Multiprotocol Bluetooth 5.3 SoC supporting Bluetooth Low Energy, Bluetooth mesh, NFC, Thread and Zigbee

NORDIC – nRF52840 Dongle

SEEED – Seeed Studio XIAO nRF52840

ADAFRUIT – NRF5240 (Adafruit nRF52840 Feather)

SPARKFUN – SparkFun Pro nRF52840 Mini

Required Components

Test Code

Flashing CircuitPython

NORDIC – nRF52840 Dongle

SEEED – Seeed Studio XIAO nRF52840

ADAFRUIT – NRF52840 (Adafruit nRF52840 Feather)

SPARKFUN – SparkFun Pro nRF52840 Mini

Circuit Python Test Code

NRF Connect Application for | Android App | iOS App Store |

Downloads

For more reference

Components

2 thoughts on “How to Wire the NRF52 Series (nRF52840) Multi Protocol Bluetooth / BLE 5, SOC”

Leave a Reply Cancel reply

NRF52 Series

Multiprotocol Bluetooth 5.3 SoC supporting Bluetooth Low Energy, Bluetooth mesh, NFC, Thread and Zigbee

NORDIC – nRF52840 Dongle

SEEED – Seeed Studio XIAO nRF52840

ADAFRUIT – NRF5240 (Adafruit nRF52840 Feather)

SPARKFUN – SparkFun Pro nRF52840 Mini

Required Components

Test Code

Flashing CircuitPython

NORDIC – nRF52840 Dongle

SEEED – Seeed Studio XIAO nRF52840

ADAFRUIT – NRF52840 (Adafruit nRF52840 Feather)

SPARKFUN – SparkFun Pro nRF52840 Mini

Circuit Python Test Code

NRF Connect Application for | Android App | iOS App Store |

Downloads

For more reference

Components

Related Article:

2 thoughts on “How to Wire the NRF52 Series (nRF52840) Multi Protocol Bluetooth / BLE 5, SOC”

Leave a Reply Cancel reply

Important Cookie Information :