SSM‐D2

The latest version of an Atmega32U4 based device from Indalo Tech

Variants

Original Version

Revision B

Reprogramming Instructions

1. Install the Arduino GUI (version >= 1.8.13)

• Select File, Preferences and paste the following link into Additional Board Manager URLs https://raw.githubusercontent.com/ghoti57/evofw3_avr/master/package_evofw3_boards_index.json *. Close Preferences

2. Configure Arduino

• Select Tools, Board, Boards Manager
  • type evofw3 in the search bar
  • click on install in Evofw3 avr boards
  • close Boards Manager
• Select Tools, Board, Evofw3 avr Boards
  • Select atmega32u4 (HW UART)
• Select Tools, Processor
  • Select atmega32u4 (5V 16Mhz)
• Select Tools, Pinout
  • Select Pro Micro

3. Get a copy of evofw3

• open evofw3.ino in Arduino

4. Plug in the SSM-D2

• In Windows Device Manager you should see an new COM Port appear as a USB Serial Device
• Select Tools, Port and choose the new COM Port
• Select Sketch, Verify/Compile
• Select Sketch, Upload

Recovery Instructions

If you have attempted to reprogram an SSM-D2 without correctly selecting the options described in 2 above the firmware will not boot correctly and the COM Port will not be visible and/or neither LED will light

If you have a DEAD device you can verify this is the problem by monitoring Device Manager and pressing the reset button on the PCB. On windows you will hear an audio signal that a device has been detected and you will see a COM Port labeled Arduino Micro Bootloader (COMz). This COM port will disappear after 8-10 seconds.

To reprogram the device from this state follow steps 1 and 2 as above and then

• In Files, Preferences
  • Select Show verbose output during compilation and upload
• Select Tools, Port and choose ANY visible COM Port that is not being used by another application (COMx)
• Select Sketch, Verify/Compile
• Select Sketch, Upload
  • Monitor the arduino console output until you see a line saying
    Forcing reset using 1200bps open/close on port COMx
    followed by multiple occurrences of a line similar to
    PORTS {COMx, COMy4, } / {COMx, COMy, } => {}
  • AS SOON AS YOU SEE THIS LINE, PRESS THE SSM-D" reset button
  • the last line should change to something like
    PORTS {COMx, COMy, } / {COMx, COMy, COMz, } => {COMz, }
    and upload should proceed
    • If you are too slow just try upload again
    • if you don't see either of the lines described and/or get an error message try upload a couple of times and then try again with a different COM port

You should now have a correctly programmed SSM-D2