Having trouble uploading code to Mailbox Guard - UPDI initialization failure

[jetski67890]

Hello everybody,

First, I want to express my appreciation for the Mailbox Guard and to @PricelessToolkit himself. Really nice guy, the build quality is excellent, and I'm excited to get it working.

The issue I'm experiencing

I'm consistently encountering an error when trying to upload code to the device:

PymcuprogError: UPDI initialisation failed

Error Message (click to expand)

Arduino: 1.8.19 (Windows 10), Board: "ATtiny3226/3216/1626/1616/1606/826/816/806/426/416/406, ATtiny1616, 5 MHz internal, 1.8V (5 MHz or less), Disabled/Disabled, EEPROM retained, Enabled (default timer), UPDI (no reset pin), 8ms, Master or Slave (saves flash and RAM), Default (doesn't print floats, 1.4k flash use), PB0-2, PA3-5, 1-series: PC0/1 (default), On all pins, with new implementation., Disabled (recommended), No delay before window "opens""

Sketch uses 7113 bytes (43%) of program storage space. Maximum is 16384 bytes.
Global variables use 252 bytes (12%) of dynamic memory, leaving 1796 bytes for local variables. Maximum is 2048 bytes.
SerialUPDI
UPDI programming for Arduino using a serial adapter
Based on pymcuprog, with significant modifications
By Quentin Bolsee and Spence Konde
Version 1.2.3 - Jan 2022
Using serial port COM4 at 230400 baud.
Target: attiny1616
Set fuses: ['0:0b00000000', '2:0x02', '6:0x04', '7:0x00', '8:0x00']
Action: write
File: C:\Users\ME~1\AppData\Local\Temp\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.hex
Traceback (most recent call last):
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py", line 286, in <module>
    main()
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py", line 128, in main
    return_code = pymcuprog_basic(args, fuses_dict)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py", line 201, in pymcuprog_basic
    args_start)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\pymcuprog_main.py", line 545, in _start_session
    backend.start_session(sessionconfig)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\backend.py", line 362, in start_session
    sessionconfig.interface_speed)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\programmer.py", line 83, in setup_device
    options=self.options)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\nvm.py", line 42, in get_nvm_access_provider
    accessprovider = NvmAccessProviderSerial(transport, device_info, baud=frequency, options=options)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\nvmserialupdi.py", line 54, in __init__
    self.avr = UpdiApplication(port, baud, self.dut)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\serialupdi\application.py", line 79, in __init__
    datalink.init_datalink()
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\serialupdi\link.py", line 44, in init_datalink
    raise PymcuprogError("UPDI initialisation failed")
pymcuprog.pymcuprog_errors.PymcuprogError: UPDI initialisation failed

Verbose Error Message (click to expand)

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Me\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Me\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Me\Documents\Arduino\libraries -fqbn=megaTinyCore:megaavr:atxy6:chip=1616,clock=5internal,bodvoltage=1v8,bodmode=disabled,eesave=enable,millis=enabled,resetpin=UPDI,startuptime=8,wiremode=mors,printf=default,PWMmux=A_default,attach=allenabled,WDTtimeout=disabled,WDTwindow=disabled -vid-pid=1A86_7523 -ide-version=10819 -build-path C:\Users\ME~1\AppData\Local\Temp\arduino_build_468515 -warnings=none -build-cache C:\Users\ME~1\AppData\Local\Temp\arduino_cache_694377 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Users\Me\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Users\Me\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.python3.path=C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\tools\python3\3.7.2-post1 -prefs=runtime.tools.python3-3.7.2-post1.path=C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\tools\python3\3.7.2-post1 -prefs=runtime.tools.avrdude.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avrdude\6.3.0-arduino17or18 -prefs=runtime.tools.avrdude-6.3.0-arduino17or18.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avrdude\6.3.0-arduino17or18 -prefs=runtime.tools.avr-gcc.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avr-gcc\7.3.0-atmel3.6.1-azduino7b1 -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-azduino7b1.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avr-gcc\7.3.0-atmel3.6.1-azduino7b1 -verbose C:\Users\Me\Downloads\MailBoxGuard-main\Code\MQTT_JSON\Mailbox_Guard_Sensor_MQTT_JSON\Mailbox_Guard_Sensor_MQTT_JSON.ino
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Me\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Me\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Me\Documents\Arduino\libraries -fqbn=megaTinyCore:megaavr:atxy6:chip=1616,clock=5internal,bodvoltage=1v8,bodmode=disabled,eesave=enable,millis=enabled,resetpin=UPDI,startuptime=8,wiremode=mors,printf=default,PWMmux=A_default,attach=allenabled,WDTtimeout=disabled,WDTwindow=disabled -vid-pid=1A86_7523 -ide-version=10819 -build-path C:\Users\ME~1\AppData\Local\Temp\arduino_build_468515 -warnings=none -build-cache C:\Users\ME~1\AppData\Local\Temp\arduino_cache_694377 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Users\Me\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Users\Me\AppData\Local\Arduino15\packages\arduino\tools\arduinoOTA\1.3.0 -prefs=runtime.tools.python3.path=C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\tools\python3\3.7.2-post1 -prefs=runtime.tools.python3-3.7.2-post1.path=C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\tools\python3\3.7.2-post1 -prefs=runtime.tools.avrdude.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avrdude\6.3.0-arduino17or18 -prefs=runtime.tools.avrdude-6.3.0-arduino17or18.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avrdude\6.3.0-arduino17or18 -prefs=runtime.tools.avr-gcc.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avr-gcc\7.3.0-atmel3.6.1-azduino7b1 -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-azduino7b1.path=C:\Users\Me\AppData\Local\Arduino15\packages\DxCore\tools\avr-gcc\7.3.0-atmel3.6.1-azduino7b1 -verbose C:\Users\Me\Downloads\MailBoxGuard-main\Code\MQTT_JSON\Mailbox_Guard_Sensor_MQTT_JSON\Mailbox_Guard_Sensor_MQTT_JSON.ino
Using board 'atxy6' from platform in folder: C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10
Using core 'megatinycore' from platform in folder: C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10
Detecting libraries used...
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-g++" -c -g -Os -Wall -std=gnu++17 -fpermissive -Wno-sized-deallocation -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -mrelax -w -x c++ -E -CC -mmcu=attiny1616 -DF_CPU=5000000L -DCLOCK_SOURCE=0 -DTWI_MORS -DMILLIS_USE_TIMERD0 -DCORE_ATTACH_ALL -DUSE_TIMERD0_PWM -DARDUINO=10819 -DARDUINO_AVR_ATtiny1616 -DARDUINO_ARCH_MEGAAVR "-DMEGATINYCORE=\"2.6.10\"" -DMEGATINYCORE_MAJOR=2UL -DMEGATINYCORE_MINOR=6UL -DMEGATINYCORE_PATCH=10UL -DMEGATINYCORE_RELEASED=1 -DARDUINO_attinyxy6 "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore/api/deprecated" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\variants\\txy6" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp" -o nul
Alternatives for SPI.h: [SPI@1.1.2]
ResolveLibrary(SPI.h)
  -> candidates: [SPI@1.1.2]
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-g++" -c -g -Os -Wall -std=gnu++17 -fpermissive -Wno-sized-deallocation -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -mrelax -w -x c++ -E -CC -mmcu=attiny1616 -DF_CPU=5000000L -DCLOCK_SOURCE=0 -DTWI_MORS -DMILLIS_USE_TIMERD0 -DCORE_ATTACH_ALL -DUSE_TIMERD0_PWM -DARDUINO=10819 -DARDUINO_AVR_ATtiny1616 -DARDUINO_ARCH_MEGAAVR "-DMEGATINYCORE=\"2.6.10\"" -DMEGATINYCORE_MAJOR=2UL -DMEGATINYCORE_MINOR=6UL -DMEGATINYCORE_PATCH=10UL -DMEGATINYCORE_RELEASED=1 -DARDUINO_attinyxy6 "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore/api/deprecated" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\variants\\txy6" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\libraries\\SPI\\src" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp" -o nul
Alternatives for LoRa.h: [LoRa@0.8.0]
ResolveLibrary(LoRa.h)
  -> candidates: [LoRa@0.8.0]
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-g++" -c -g -Os -Wall -std=gnu++17 -fpermissive -Wno-sized-deallocation -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -mrelax -w -x c++ -E -CC -mmcu=attiny1616 -DF_CPU=5000000L -DCLOCK_SOURCE=0 -DTWI_MORS -DMILLIS_USE_TIMERD0 -DCORE_ATTACH_ALL -DUSE_TIMERD0_PWM -DARDUINO=10819 -DARDUINO_AVR_ATtiny1616 -DARDUINO_ARCH_MEGAAVR "-DMEGATINYCORE=\"2.6.10\"" -DMEGATINYCORE_MAJOR=2UL -DMEGATINYCORE_MINOR=6UL -DMEGATINYCORE_PATCH=10UL -DMEGATINYCORE_RELEASED=1 -DARDUINO_attinyxy6 "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore/api/deprecated" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\variants\\txy6" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\libraries\\SPI\\src" "-IC:\\Users\\Me\\Documents\\Arduino\\libraries\\LoRa\\src" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp" -o nul
Using cached library dependencies for file: C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\libraries\SPI\src\SPI.cpp
Using cached library dependencies for file: C:\Users\Me\Documents\Arduino\libraries\LoRa\src\LoRa.cpp
Generating function prototypes...
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-g++" -c -g -Os -Wall -std=gnu++17 -fpermissive -Wno-sized-deallocation -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -mrelax -w -x c++ -E -CC -mmcu=attiny1616 -DF_CPU=5000000L -DCLOCK_SOURCE=0 -DTWI_MORS -DMILLIS_USE_TIMERD0 -DCORE_ATTACH_ALL -DUSE_TIMERD0_PWM -DARDUINO=10819 -DARDUINO_AVR_ATtiny1616 -DARDUINO_ARCH_MEGAAVR "-DMEGATINYCORE=\"2.6.10\"" -DMEGATINYCORE_MAJOR=2UL -DMEGATINYCORE_MINOR=6UL -DMEGATINYCORE_PATCH=10UL -DMEGATINYCORE_RELEASED=1 -DARDUINO_attinyxy6 "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore/api/deprecated" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\variants\\txy6" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\libraries\\SPI\\src" "-IC:\\Users\\Me\\Documents\\Arduino\\libraries\\LoRa\\src" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp" -o "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\preproc\\ctags_target_for_gcc_minus_e.cpp"
"C:\\Program Files (x86)\\Arduino\\tools-builder\\ctags\\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\preproc\\ctags_target_for_gcc_minus_e.cpp"
Compiling sketch...
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-g++" -c -g -Os -Wall -std=gnu++17 -fpermissive -Wno-sized-deallocation -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -MMD -flto -mrelax -mmcu=attiny1616 -DF_CPU=5000000L -DCLOCK_SOURCE=0 -DTWI_MORS -DMILLIS_USE_TIMERD0 -DCORE_ATTACH_ALL -DUSE_TIMERD0_PWM -DARDUINO=10819 -DARDUINO_AVR_ATtiny1616 -DARDUINO_ARCH_MEGAAVR "-DMEGATINYCORE=\"2.6.10\"" -DMEGATINYCORE_MAJOR=2UL -DMEGATINYCORE_MINOR=6UL -DMEGATINYCORE_PATCH=10UL -DMEGATINYCORE_RELEASED=1 -DARDUINO_attinyxy6 "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore/api/deprecated" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\cores\\megatinycore" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\variants\\txy6" "-IC:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\megaTinyCore\\hardware\\megaavr\\2.6.10\\libraries\\SPI\\src" "-IC:\\Users\\Me\\Documents\\Arduino\\libraries\\LoRa\\src" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp" -o "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp.o"
Compiling libraries...
Compiling library "SPI"
Using previously compiled file: C:\Users\ME~1\AppData\Local\Temp\arduino_build_468515\libraries\SPI\SPI.cpp.o
Compiling library "LoRa"
Using previously compiled file: C:\Users\ME~1\AppData\Local\Temp\arduino_build_468515\libraries\LoRa\LoRa.cpp.o
Compiling core...
Using precompiled core: C:\Users\ME~1\AppData\Local\Temp\arduino_cache_694377\core\core_73192a29556982642a46823858c44fbe.a
Linking everything together...
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-gcc" -Wall -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -Wl,--section-start=.text=0x0 -mrelax -mmcu=attiny1616 -o "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\sketch\\Mailbox_Guard_Sensor_MQTT_JSON.ino.cpp.o" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\libraries\\SPI\\SPI.cpp.o" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515\\libraries\\LoRa\\LoRa.cpp.o" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/..\\arduino_cache_694377\\core\\core_73192a29556982642a46823858c44fbe.a" "-LC:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515" -lm
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-objcopy" -O binary -R .eeprom "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.bin"
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.eep"
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-objcopy" -O ihex -R .eeprom "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf" "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.hex"
cmd /C echo. && "C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-objdump" --disassemble --source --line-numbers --demangle --section=.text "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf" > "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.lst"
 
cmd /C echo. && "C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-nm" --numeric-sort --line-numbers --demangle --print-size --format=s "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf" > "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.map"
 
Using library SPI at version 1.1.2 in folder: C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\libraries\SPI 
Using library LoRa at version 0.8.0 in folder: C:\Users\Me\Documents\Arduino\libraries\LoRa 
"C:\\Users\\Me\\AppData\\Local\\Arduino15\\packages\\DxCore\\tools\\avr-gcc\\7.3.0-atmel3.6.1-azduino7b1/bin/avr-size" -A "C:\\Users\\ME~1\\AppData\\Local\\Temp\\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.elf"
Sketch uses 7113 bytes (43%) of program storage space. Maximum is 16384 bytes.
Global variables use 252 bytes (12%) of dynamic memory, leaving 1796 bytes for local variables. Maximum is 2048 bytes.
C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\tools\python3\3.7.2-post1/python3 -u C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py -t uart -u COM4 -b 230400 -d attiny1616 --fuses 0:0b00000000 2:0x02 6:0x04 7:0x00 8:0x00 -fC:\Users\ME~1\AppData\Local\Temp\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.hex -a write -v 
SerialUPDI
UPDI programming for Arduino using a serial adapter
Based on pymcuprog, with significant modifications
By Quentin Bolsee and Spence Konde
Version 1.2.3 - Jan 2022
Using serial port COM4 at 230400 baud.
Target: attiny1616
Set fuses: ['0:0b00000000', '2:0x02', '6:0x04', '7:0x00', '8:0x00']
Action: write
File: C:\Users\ME~1\AppData\Local\Temp\arduino_build_468515/Mailbox_Guard_Sensor_MQTT_JSON.ino.hex
pymcuprog.programmer - INFO - Setting up programming session for 'attiny1616'
pymcuprog.deviceinfo.deviceinfo - INFO - Looking for device attiny1616
pymcuprog.serialupdi.physical - INFO - Opening port 'COM4' at '115200' baud
pymcuprog.serialupdi.link - INFO - STCS 08 to 0x03
pymcuprog.serialupdi.link - INFO - STCS 06 to 0x02
pymcuprog.serialupdi.link - INFO - LDCS from 0x00
pymcuprog.serialupdi.link - WARNING - UPDI init failed: Can't read CS register.
pymcuprog.serialupdi.physical - INFO - Sending double break
pymcuprog.serialupdi.physical - INFO - Double-break sent. Retrying.
pymcuprog.serialupdi.physical - INFO - Opening port 'COM4' at '115200' baud
pymcuprog.serialupdi.link - INFO - STCS 08 to 0x03
pymcuprog.serialupdi.link - INFO - STCS 06 to 0x02
pymcuprog.serialupdi.link - INFO - LDCS from 0x00
pymcuprog.serialupdi.link - WARNING - UPDI init failed: Can't read CS register.
Traceback (most recent call last):
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py", line 286, in <module>
    main()
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py", line 128, in main
    return_code = pymcuprog_basic(args, fuses_dict)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10/tools/prog.py", line 201, in pymcuprog_basic
    args_start)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\pymcuprog_main.py", line 545, in _start_session
    backend.start_session(sessionconfig)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\backend.py", line 362, in start_session
    sessionconfig.interface_speed)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\programmer.py", line 83, in setup_device
    options=self.options)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\nvm.py", line 42, in get_nvm_access_provider
    accessprovider = NvmAccessProviderSerial(transport, device_info, baud=frequency, options=options)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\nvmserialupdi.py", line 54, in __init__
    self.avr = UpdiApplication(port, baud, self.dut)
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\serialupdi\application.py", line 79, in __init__
    datalink.init_datalink()
  File "C:\Users\Me\AppData\Local\Arduino15\packages\megaTinyCore\hardware\megaavr\2.6.10\tools\libs\pymcuprog\serialupdi\link.py", line 44, in init_datalink
    raise PymcuprogError("UPDI initialisation failed")
pymcuprog.pymcuprog_errors.PymcuprogError: UPDI initialisation failed
pymcuprog.serialupdi.physical - INFO - Closing port 'COM4'
the selected serial port pymcuprog.serialupdi.physical - INFO - Closing port 'COM4'
 does not exist or your board is not connected

What I've tried so far

• Verified my Arduino IDE (version 1.8.19)
• Reinstalled libraries and board definitions
• Tested multiple USB cables
• Tried different USB ports on my computer

Confirmed that all necessary libraries and board manager components are installed (click to expand)

Notably, I was able to successfully upload code to the Capibridge Gateway without any issues, which leads me to wonder if there might be a hardware issue with the UPDI programmer or the Mailbox Guard board itself.

Additional observations

• The red PW led is constantly red, indicating that the board is receiving power and during the upload process, the TX led is flashing green.

Here are pictures of the setup (click to expand)

Any guidance on troubleshooting this further would be greatly appreciated.

Thank you for your help!

[PricelessToolkit]

Hi, thank you for supporting my work!

Mailbox Guard is pre-flashed, so I don't think the problem is with it.

1. Remove the jumper from UNIPROG.
2. Connect TX to RX.
3. Open the COM port in the Arduino IDE and send some text. The LED will blink, and you will get the text back.

This way, we can check if the problem is on the UNIPROG "serial side" or not.

In any case, if you can program CapiBridge successfully, the software part is OK, and there's a 99% chance the problem is in the programmer.

Please contact me through the shop!

PS: I hope everyone who opens an issue or discussion will structure their problem like you!

[jetski67890]

Thanks for the quick reply!
I always think that the better / more structured I formulate my request/problem, the better I can be helped!

I will contact you through the shop.