Elektor_Mag_-_January-February_2021

90 January & February 2021 http://www.elektormagazine.com

[1] Documentation and Software Download: http://www.elektormagazine.com/190311-01

[2] New LCR Meter Project Page on Labs: http://www.elektormagazine.com/labs/remake-lcr-meter

[3] Silicon Labs Production Programmer Download: http://www.silabs.com/documents/login/software/MCUProductionProgrammer.zip

WEB LINKS

Figure 6a: Measuring an inductor with bias
current.

Figure 6b: Measuring an inductor at higher

frequency.

Figure 6c: Measuring an inductor without bias

current.

a b c

FIRST START OF THE DEVICE WITH

A BLANK MICROCONTROLLER

The first time you power up, you need a PC running

Windows and the USB Debug Adapter from Silicon

Labs (e.g. RS part no. 757-0297) for loading the

microcontroller firmware via the JTAG interface

(J15). You must have downloaded the MergedLCR6.

hex file, which is the file that includes both the

bootloader (boot_LCR6.hex), and the firmware LCR6.

hex. Procedures and detailed instructions are given

in the Operating instructions document [1].

LOADING THE FIRMWARE

FOR THE FIRST TIME

Connect the USB Debug Adapter cable to J15 on the

board and the PC and set SW1 to ON. Run the MCU

Production Programmer [3]:

> Go to Program Menu / Configure Programming Information... and copy all

settings as in the screenshot below, then Accept Settings (you can save

these settings by Save Settings...) (Figure7a/b)

> Click on Program Device to launch the operation.

> After programming is finished, Device Programmed and Verified message

appears in the Status Log window

> Then the display texts (language file) must be uploaded using the

instructions in the Operating instructions document §4.2.5.

Figure 7a: Programming settings in Silicon Labs’s MCU Production Programmer.

Figure 7b: Silicon Labs’s MCU Production

Programmer programming screen.