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9549 – NRF51822 Eval Kit/en

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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The BLE4.0 development and evaluation kit is based on the nRF51822 SoC (Bluetooth 4.0 LE / 2.4 GHz RF) for ultra-low-power wireless applications. It consists of the BLE400 motherboard and the Core51822 module.

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Technical overview

  • The BLE400 motherboard provides a battery holder, multiple power supply options, accessible I/O pins, an integrated CP2102 UART bridge, and user LEDs and keys.
  • Supported interfaces include Bluetooth, I2C, SPI, UART, and USB-to-UART.
  • For the PC development environment, use Windows XP or Windows 7, nRFgo Studio v1.14 or higher, Keil MDK-ARM Lite v4.54 or higher, and J-Link software v4.52b or higher.
  • Mobile apps: iOS users install “nRF Utility” from the App Store; Android users (4.3 or later) download, unzip, and install “nRFToolbox.”
  • To connect with a mobile phone: install the CP2102 driver, connect the mini USB port to a PC, and select the matching serial port at 38400 baud, 8 data bits, and 1 stop bit.
  • Sending the character “Y” or “y” starts broadcasting and turns on LED0. After connecting via nRFToolbox, LED0 turns off and LED1 turns on.
  • To compile blinky_example: first erase all preinstalled programs in nRFgo Studio under “nRF51 Programming” > “Erase all”, then open the project in Keil, compile with F7, and download it.
  • To program ble_app_hrs: first load the SoftDevice s110_nrf51822_6.0.0_softdevice.hex via “Program SoftDevice”, then open the example project in Keil, compile, and download it.

Commands and examples – verify before use:  

Send 'Y' or 'y' over serial to start broadcasting
nRFgo Studio: nRF51 Programming > Erase all
Keil: press F7 to build
nRFgo Studio: nRF51 Programming > Program SoftDevice > Browse (choose s110_nrf51822_6.0.0_softdevice.hex) > Program

Notes and version constraints

  • The exact versions of nRFgo Studio, Keil MDK-ARM, and J-Link must match the SDK version in use; mismatches can cause download failures.
  • If KEIL reports a download error while nRFgo Studio works, verify the flash-download settings and confirm that the SDK was installed correctly.
  • The product ships without a battery; a CR1220 button cell must be inserted for clocking operation.
  • The Bluetooth-to-serial demo requires the phone to support Bluetooth 4.0 and to have the relevant app installed.
  • Several steps depend on the chosen SDK and SoftDevice versions; if these components change, paths and settings must be rechecked.

Source and revision record

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