Lantronix xPico 200 Series User manual

Application Note:
xPico 200 Series – JTAG Programming
Part Number APP-0120
Revision A November 2021

xPico 200 Series - JTAG Programming 2
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xPico 200 Series - JTAG Programming 3
Revision History
Date Rev. Comments
November 2021 A Initial document.
For the latest revision of this product document, please check our online documentation at
www.lantronix.com/support/documentation.
Contents
Overview .............................................................................................................. 4
Hardware and Software Requirements................................................................. 4
JTAG Programming Hardware Checklist .................................................................................. 4
JTAG Hardware Setup ......................................................................................... 5
Software Instructions ............................................................................................ 6

xPico 200 Series - JTAG Programming 4
Overview
This Application Note is designed to help Lantronix xPico 200 Series users perform JTAG-based
firmware programming of the modules. When customers design the xPico 200 series modules
into their products without exposing the UART pins for typical firmware programming methods,
the JTAG interface will be the only way to program or update the device firmware.
Hardware and Software Requirements
The JTAG Programming Hardware Checklist below contains the hardware required to perform
JTAG programming of the xPico 200 series modules. This application note uses Olimex and Tag-
Connect hardware and adapters. There are numerous JTAG programmers available – other
brands and adapter types may also work.
Note: The hardware adapters and tools are not provided by Lantronix and should be purchased
from an electronics supply business or the manufacturer of the hardware.
The software needed to accomplish JTAG programming (xPico200Recovery.zip) is supplied
by the Lantronix support team or Field Applications Engineer.
JTAG Programming Hardware Checklist
1. Olimex ARM-USB-TINY-H USB to JTAG Programmer/Debugger
2. Tag-Connect 2050 IDC (Cable, SKU TC2050-IDC)
3. Tag-Connect TC2050-ARM2010 ARM 20-pin to TC2050 Adapter (PCB Adapter, SKU
TC2050-ARM2010)
4. (Not pictured) USB 2.0 cable, Type-A to Type-B
5. (Not pictured) A Windows 10 PC with an exclusive USB port (no USB hub)
Items 1, 2, and 3 are shown in Figure 1 below.
Figure 1. JTAG Programming - Required Hardware
2
3
1

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JTAG Hardware Setup
Perform the following steps to connect the Olimex and Tag-Connect adapters to the xPico 200
Evaluation Kit.
1. Connect the Olimex and Tag-Connect adapters to the USB cable as shown in the image
below. Note that the grey ribbon cable 10-pin and PCB 20-pin adapter are keyed which will
prevent any mistakes in assembly.
2. Using the xPico 200 Series Eval Kit, plug the Tag-Connect grey cable JTAG connector into
J1 of the Evaluation Kit as shown below. This is a keyed (2-pins on one end and 1 on the
other end) connection to ensure that mistakes are not made.

xPico 200 Series - JTAG Programming 6
Software Instructions
1. Obtain a Windows 10 computer to work from.
2. Extract the contents of the .zip file (filename is xPico200Recovery.zip) to the C:\
directory.
3. Connect the Olimex ARM-USB-TINY-H to a USB port on the PC; a "Setting up device.."
message will appear.
4. Wait for the "Device is ready" message to appear.
5. From the extracted files, locate and run zadig-2.5.exe.
6. From the Zadig application, install Win-USB on Olimex Interface 0; see the image below.
7. Click Install Driver. Once complete, the message "Driver Installation: SUCCESS" will appear
as shown in the image below.

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8. Install Win-USB on Olimex Interface 1. When complete, the message "Driver Installation:
SUCCESS" will appear as shown in the image below:
Note: If issues arise when trying to install the Win-USB drivers from Zadig to the Olimex
JTAG programmer, isolate the USB cable being used with the Olimex to an exclusive
USB port on the PC (no USB hubs).
If programming fails, but the Olimex "Interface X" is displayed numerically (where X is
0 or 1):
1. Select Advanced Mode under the Options menu
2. Select the desired interface
3. Click Reinstall Driver
9. Perform the above Olimex driver installation steps just one time per PC.
10. Copy the desired firmware image into the C:\xPico200Recovery\directory. It must have
a name of the form xPico200_*_partition1.signed.rom, where *is the version.
11. From the extracted files, run the msys2_shell shortcut file to open your MINGW64 window.
12. In the window, type cd /c/xPico200Recovery to set the directory.
13. Connect the JTAG to the board you want to program.
14. Type make download to install the firmware.
15. Type make run to run the firmware.
16. You may combine Steps 14 & 15 as make download run to install and run with a single
command.