5 Observe the Output on the Serial Console

  1. Connect the UART Lines (TX and RX) and ground (GND) between the Host and Client using the jumper wires as per the following table.
    Table 5-1. Hardware Connection Between Host and Client
    PIC32CM LS60 Curiosity ProUART UART GND
    HostPA12

    (EXT 3, PIN14, TX)

    		PA13

    (EXT 3, PIN 13, RX)

    		GND

    (EXT 3, PIN 2, GND)

    Client

    (Bootloader)

    		PA13

    (EXT 3, PIN13, RX)

    		PA12

    (EXT 3, PIN14, TX)

    		GND

    (EXT 3, PIN 2, GND)

    Figure 5-1. Hardware Connection Between Host and Client
  2. Open two Serial console applications for the Host and Client, such as Tera Term on the Host PC and perform the serial port setup as follows.
    Figure 5-2. Host and Client Serial Port Configuration
  3. Press the Reset push button on both PIC32CM LS60 Curiosity Pro Evaluation Kits to reset the Host and Client devices.
    Figure 5-3. Resetting the Host and Client Boards
  4. Observe the console message on the Host and Client serial consoles.
    Figure 5-4. Host Console Message
    Figure 5-5. Client Console Message
  5. Disconnect or close the Host MCU's serial console to give the Host PC access to transfer the client firmware.
  6. Press the SW1 button on the Host evaluation board to receive the Client firmware from the PC.
    Figure 5-6. Transfer of the Client Firmware onto the Host Board
    Note: The LED1 on the Host evaluation board will illuminate to indicate that the Host MCU is prepared for the client firmware reception.
    Figure 5-7. Indication of the Client Firmware Reception Process
  7. Open the command prompt and run the python script (btl_host.py) as used to transfer the target application binary file with the configuration bits to the Host MCU board.
    python <harmony3_path>/bootloader/tools/btl_host.py -v -i <COM PORT> -d PIC32CM -a 0x9000 -f <downloaded path>/pic32cm_ls60_secure_firmware_upgrade/hex/test_app/test_app_secure.X.production.bin -c <downloaded path>/pic32cm_ls60_secure_firmware_upgrade/scripts/application_user_configurations_out.txt
    Note: Users need to install the pyserial package before running the python script.
    Figure 5-8. Running the Python Script
    Figure 5-9. Completing of the Firmware Transfer
  8. Reopen the serial console as mentioned in Step 2.
  9. Press the SW0 button on the Host evaluation board to upgrade the Client firmware. The progress of the firmware upgrade will be displayed in the terminal console.
    Figure 5-10. Starting the Firmware Upgrade Process on the Client
    Note: The LED0 on the Host evaluation board will illuminate to indicate that the Host MCU has initiated the secure firmware upgrade on the client.
    Figure 5-11. Indication of the Secure Firmware Upgrade Process on the Client
    Figure 5-12. Host Firmware Upgrade Progress
  10. Once the firmware update is completed, the LED0 on the Host evaluation board will be turned off.
    Figure 5-13. Host Firmware Upgrade Completion
  11. On the Client evaluation board, the LED0 will start blinking and display the startup message on the terminal console.
    Figure 5-14. Client Firmware Upgrade Completion