Hi,
I recently bought the Arduino starter kit and have a lot of fun with it. My goals is to make a MIDI device and saw this post how to make a MIDI usb device of the UNO: ddiakopoulos/hiduino.
So I managed to flash the Atmega16U2 with arduino_midi.hex firmware using the Arduino ISP with the following command:
avrdude.exe -p m16u2 -P usb -c arduinoisporg -U flash:w:arduino_midi.hex -U lfuse:w:0xEF:m -U hfuse:w:0xD9:m -U efuse:w:0xF4:m -U lock:w:0x0F:m
This works perfectly: connecting the Arduino Uno through USB shows up as a midi device!
But my issue is going back. I would like to be able to connect to the serial port again.
avrdude -p m16u2 -P usb -c arduinoisporg -v -U flash:w:Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex -U lfuse:w:0xFF:m -U hfuse:w:0xD9:m -U efuse:w:0xF4:m -U lock:w:0x0F:m
avrdude: Version 6.0.1, compiled on Jan 15 2015 at 16:58:43
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "c:\Program Files (x86)\Arduino\hardware\tools\avr\etc\avrdude.conf"
Using Port : usb
Using Programmer : arduinoisporg
avrdude: usbdev_open(): Found USBtinyISP, bus:device: bus-0:\\.\libusb0-0001--0x2a03-0x0049
AVR Part : ATmega16U2
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC6
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 512 4 128 9000 9000 0x00 0x00
flash 65 6 128 0 yes 16384 128 128 4500 4500 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : USBtiny
Description :
avrdude: programmer operation not supported
avrdude: Using SCK period of 10 usec
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.01s
avrdude: Device signature = 0x1e9489
avrdude: safemode: lfuse reads as EF
avrdude: safemode: hfuse reads as D9
avrdude: safemode: efuse reads as F4
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: Using SCK period of 10 usec
avrdude: reading input file "Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex"
avrdude: input file Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex auto detected as raw binary
avrdude: writing flash (16384 bytes):
Writing | ################################################## | 100% 44.75s
avrdude: 16384 bytes of flash written
avrdude: verifying flash memory against Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex:
avrdude: load data flash data from input file Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex:
avrdude: input file Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex auto detected as raw binary
avrdude: input file Arduino-COMBINED-dfu-usbserial-atmega16u2-Uno-Rev3.hex contains 16384 bytes
avrdude: reading on-chip flash data:
Reading | ################################################## | 100% 24.63s
avrdude: verifying ...
avrdude: 16384 bytes of flash verified
avrdude: reading input file "0xFF"
avrdude: writing lfuse (1 bytes):
Writing | ################################################## | 100% 0.01s
avrdude: 1 bytes of lfuse written
avrdude: verifying lfuse memory against 0xFF:
avrdude: load data lfuse data from input file 0xFF:
avrdude: input file 0xFF contains 1 bytes
avrdude: reading on-chip lfuse data:
Reading | ################################################## | 100% 0.00s
avrdude: verifying ...
avrdude: 1 bytes of lfuse verified
avrdude: reading input file "0xD9"
avrdude: writing hfuse (1 bytes):
Writing | ################################################## | 100% 0.00s
avrdude: 1 bytes of hfuse written
avrdude: verifying hfuse memory against 0xD9:
avrdude: load data hfuse data from input file 0xD9:
avrdude: input file 0xD9 contains 1 bytes
avrdude: reading on-chip hfuse data:
Reading | ################################################## | 100% 0.00s
avrdude: verifying ...
avrdude: 1 bytes of hfuse verified
avrdude: reading input file "0xF4"
avrdude: writing efuse (1 bytes):
Writing | ################################################## | 100% 0.00s
avrdude: 1 bytes of efuse written
avrdude: verifying efuse memory against 0xF4:
avrdude: load data efuse data from input file 0xF4:
avrdude: input file 0xF4 contains 1 bytes
avrdude: reading on-chip efuse data:
Reading | ################################################## | 100% 0.00s
avrdude: verifying ...
avrdude: 1 bytes of efuse verified
avrdude: reading input file "0x0F"
avrdude: writing lock (1 bytes):
Writing | ################################################## | 100% 0.01s
avrdude: 1 bytes of lock written
avrdude: verifying lock memory against 0x0F:
avrdude: load data lock data from input file 0x0F:
avrdude: input file 0x0F contains 1 bytes
avrdude: reading on-chip lock data:
Reading | ################################################## | 100% 0.00s
avrdude: verifying ...
avrdude: 1 bytes of lock verified
avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as D9
avrdude: safemode: efuse reads as F4
avrdude: safemode: Fuses OK (H:F4, E:D9, L:FF)
avrdude done. Thank you.
As you see no errors here. But The Uno does not appear as a COM device in the device manager. (I work on Windows 10, 64 bit)
I still can write to the atmega328p and write a sketch using the ISP, like blink. I can go back to the arduino_midi firmware. But when flasing with the default firmware the COM device does not appear. Why?
I hope somebody can guide me in the right direction.
Best,
Guido