MCUprog UPDI is a windows program with CLI and GUI, is used for programming various Microchip MCU devices using Microchip CMSIS-DAP based debuggers and standard TTL serial port.

I create this tool for my personal project and focus on UPDI programming interface only, so I name it as MCUprog UPDI.

MCUprog UPDI supports newest MCU from microchip. It works well with new AVR 0-Series, 1-Series and 2-Series using UPDI programming interface.

You can use it directly on windows without Python. Checkout releases

This soruce code is modified and used to build Windows application. it does not compatible original build.

MCUprog UPDI can be used as Serial UPDI programmer using a standard TTL serial port

If you use MegaTinyCore by SpenceKonde version from 2.3.2, programming speed can be as high as 460800 baud. Checkout docs for SerialDUPI from SpenceKonde

Example connection, for detailes please check above link. Be sure to connect a common ground, and use a TTL serial adapter running at the same voltage as the AVR device

Vcc                     Vcc                     Vcc
+-+                     +-+                     +-+
 |                      |                       |
+---------------------+ |                       | +--------------------+
| Serial port         +-+                       +-+  AVR device        |
|                     |      +----------+         |                    |
|                  TX +------+  1k-4.7k +---------+ UPDI               |
|                     |      +----------+    |    |                    |
|                     |                      |    |                    |
|                  RX +----------------------+    |                    |
|                     |                           |                    |
|                     +--+---------------------+--+                    |
+---------------------+  |                     |  +--------------------+
                        +-+                   +-+
                        GND                   GND                        

                                         Vcc
                                         +-+
                                           |
        +---------------------+            |  |-------------------+
        | Pickit4       2-VDD +------------+--+   AVR device      |
        |                     |               |                   |
        |               3-GND +---------------+ GND               |
|USB|---|                     |               |                   |
        |               4-PGD +---------------+ UPDI              |
        |                     |               |                   |
        |                     |               |                   |
        +---------------------+               |-------------------+

MCUprog UPDI can be used as a command-line interface. GUI version will release soon.

When installed using pip, MCUprog UPDI CLI is located in the Python scripts folder.

Example 1: test connectivity by reading the device ID using Curiosity Nano:

mcuprog ping

Example 2: write contents of a hexfile to flash using Curiosity Nano:

mcuprog write -f app.hex

Example 3: interface with UPDI using pickit4 and erase flash

mcuprog -d attiyy1626 erase

Example 4: interface with UPDI using TTL serial port

mcuprog -i uart -u com1 -c 115200 -d attiny1626 reset

Example 5: write content of hexfile to flash

mcuprog -i uart -u com1 -c 115200 -d attiny1626 write -f app.hex

Example 6: get voltage of devices using pickit4

mcuprog getvoltage

For more examples see on pypi.org

MCUprog UPDI is primarily intended for use with PKOB nano (nEDBG) debuggers which are found on Curiosity Nano kits and other development boards. This means that it is continuously tested with a selection of AVR devices with UPDI interface as well as a selection of PIC devices. However since the protocol is compatible between all EDBG-based debuggers (pyedbglib) it is possible to use MCUprog UPDI with a wide range of debuggers and devices, although not all device families/interfaces have been implemented.

MCUprog UPDI supports:

• PKOB nano (nEDBG) - on-board debugger on Curiosity Nano
• MPLAB PICkit 4 In-Circuit Debugger (when in 'AVR mode')
• MPLAB Snap In-Circuit Debugger (when in 'AVR mode')
• Atmel-ICE
• Power Debugger
• EDBG - on-board debugger on Xplained Pro/Ultra
• mEDBG - on-board debugger on Xplained Mini/Nano
• JTAGICE3 (firmware version 3.0 or newer)

Although not all functionality is provided on all debuggers/boards. See device support section below.

MCUprog UPDI supports:

• All UPDI devices, whether mounted on kits or standalone
• PIC devices mounted on Curiosity Nano kits, or similar board with PKOB nano (nEDBG) debugger

Other devices (eg ATmega328P, ATsamd21e18a) may be partially supported for experimental purposes

Open Command Prompt and run cx_freeze

pip install cx_freeze

Change working directory to source code folder and run

python build.py build_exe

Go to build/exe.win-xxx folder and run runme.bat and enjoy!

• Browse origin pymcuprog source code on github
• Read API documentation on github