Arch Link

Introduction

Arch Link is an mbed enabled development board based on Nordic nRF51822 and WIZnet W5500 ethernet interface. With Arduino form factor, Grove connectors and micro SD interface, it is extremely easy to create a bluetooth low energy device.

Features

  • mbed enabled
    • Online IDE
    • Easy to use C/C++ SDK
    • Handy libraries
  • CMSIS DAP based on LPC11U35
    • Drag-n-drop programming
    • Debug using CMSIS DAP standard
    • USB virtual serial for communication
  • Arduino form factor with Grove connectors
    • I2C and UART connecter on board
  • Nordic nRF51822 Multi-protocol Bluetooth® 4.0 low energy/2.4GHz RF SoC
    • ARM Cortex M0 processor
    • 256kB flash/16kB RAM
    • Configurable I/O mapping for digital I/O
  • WIZnet W5500 Ethernet
    • Supports following Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
    • Supports Power down mode
    • Supports Wake on LAN over UDP
    • Supports High Speed Serial Peripheral Interface(SPI MODE 0, 3)
    • Internal 32Kbytes Memory for Tx/Rx Buffers
    • 10BaseT/100BaseTX Ethernet PHY embedded
    • with RJ45 connector
  • USB Micro B connector
  • Micro SD Card connector

Hardware Overview

Get Started

  1. Click this link to login or signup to mbed
  2. Import the mbed_blinky program
  3. Click the Compile icon of the top toolbar to compile the program, then download a compiled hex file.
  4. Drag-n-drop the downloaded hex file into the MBED disk

You can open main.cpp to change the program. For example, use the following code to blink the LED every 0.1s

    #include "mbed.h"

    DigitalOut led(p30);           // on-board led is connected to p30

    int main()
    {
        while (true) {
            led = !led;
            wait(0.1);
        }
    }

Note

If you are get a compiling error that 'device.h' is not found, try to update the mbed library to the latest revision in your program.

Applications

  1. Color Pixels, a colorful LED strip, can be controlled by mobile phone.

    If you want to change the program, click this link to import the Color Pixels program to mbed online IDE.

    If the BLE device is disconnected frequently, we can improve the stability by changing the BLE parameters - Advertising Duration (main.cpp), Min Interval and Max Interval (nRF51822/projectconfig.h)

    #define CFG_GAP_CONNECTION_MIN_INTERVAL_MS           20                     /**< Minimum acceptable connection interval */
    #define CFG_GAP_CONNECTION_MAX_INTERVAL_MS          200                     /**< Maximum acceptable connection interval */
    
  2. You can use the Arch Link as a web dashboard.

  3. You can also use the Arch Link as a Mobile APP dashboard.

Update or Restore Firmware

The latest firmware version for the Arch Link is v0203 built at Jun 4 2015. To check your firmware version and built date, open the MBED.HTM or DETAILS.TXT of your MBED disk in a text editor.

Changelog:

  • 2015-06-4 first version

Firmware:

The firmware v0203 2015-06-04 for Arch Link To flash a new firmware:

  • Hold the Arch Link’s button and power it ON
  • A CRP DISABLD disk will show up
    • On Windows, replace firmware.bin with the above firmware
    • On Linux/Mac, use command: dd if={new_firmware.bin} of={firmware.bin} conv=notrunc

Resources

See Also

Help us make it better

Thank you for choosing Seeed. A couple of months ago we initiated a project to improve our documentation system. What you are looking at now is the first edition of the new documentation system. Comparing to the old one, here is the progresses that we made:

  • Replaced the old documentation system with a new one that was developed from Mkdocs, a more widely used and cooler tool to develop documentation system.
  • Integrated the documentation system with our official website, now you can go to Bazaar and other section like Forum and Community more conveniently.
  • Reviewed and rewrote documents for hundreds of products for the system’s first edition, and will continue migrate documents from old wiki to the new one.

An easy-to-use instruction is as important as the product itself. We are expecting this new system will improve your experience when using Seeed’s products. However since this is the first edition, there are still many things need to improve, if you have any suggestions or findings, you are most welcome to submit the amended version as our contributor or give us suggestions in the survey below, Please don’t forget to leave your email address so that we can reply.

Happy hacking