Contents: [Dobrica Pavlinušić's random unstructured stuff]
• Dobrica Pavlinušić's random unstructured stuff (Nano 3.0 Atmega328P‑AU) 
• Dobrica Pavlinušić's random unstructured stuff (avrdude) 
• Dobrica Pavlinušić's random unstructured stuff (bootloader update) 
• Dobrica Pavlinušić's random unstructured stuff (bus pirate) 
• Dobrica Pavlinušić's random unstructured stuff (usbasp bootloader update) 
• Dobrica Pavlinušić's random unstructured stuff (flash ond nano bootloader) 
• Dobrica Pavlinušić's random unstructured stuff (flash optiboot) 
• Dobrica Pavlinušić's random unstructured stuff (add bus pirate to arduino GUI) 
• Dobrica Pavlinušić's random unstructured stuff (Simulators/Emulators) 
• Dobrica Pavlinušić's random unstructured stuff (emulino) 
• Dobrica Pavlinušić's random unstructured stuff (simuino) 
• Dobrica Pavlinušić's random unstructured stuff (emulare) 
• Dobrica Pavlinušić's random unstructured stuff (simavr) 
• Dobrica Pavlinušić's random unstructured stuff (programming sketches) 
• Dobrica Pavlinušić's random unstructured stuff (DebugWire protocol) 
• Dobrica Pavlinušić's random unstructured stuff (Internal ADC reference) 

Nano 3.0 Atmega328P‑AU
http://dx.com/p/arduino‑nano‑v3‑0‑81877 
but it doesn't work without bootloader
http://club.dx.com/forums/forums.dx/threadid.1185512 
http://club.dx.com/forums/forums.dx/threadid.1218851 
avrdude
dpavlin@blue:~$ avrdude -c buspirate -P /dev/ttyUSB0 -p m328p -v

avrdude: Version 5.11.1, compiled on Mar 24 2013 at 00:54:55
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/etc/avrdude.conf"
         User configuration file is "/home/dpavlin/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/ttyUSB0
         Using Programmer              : buspirate
         AVR Part                      : ATMEGA328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         RESET disposition             : dedicated
         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       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 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 : BusPirate
         Description     : The Bus Pirate

Detecting BusPirate...
avrdude: buspirate_readline(): #
avrdude: buspirate_readline(): RE
avrdude: buspirate_readline(): Bus Pirate v3.b clone w/different PIC
avrdude: buspirate_readline(): Firmware v6.1 r1676  Bootloader v4.4
avrdude: buspirate_readline(): DEVID:0x044F REVID:0x3003 (24FJ64GA004 A3)
avrdude: buspirate_readline(): http://dangerousprototypes.com
avrdude: buspirate_readline(): HiZ>
**
BusPirate: using BINARY mode
BusPirate binmode version: 1
BusPirate SPI version: 1
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e950f
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as D9
avrdude: safemode: efuse reads as 7

avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as D9
avrdude: safemode: efuse reads as 7
avrdude: safemode: Fuses OK
BusPirate is back in the text mode

avrdude done.  Thank you.

bootloader update
bus pirate
http://dangerousprototypes.com/docs/Bus_Pirate_AVR_Programming 
But which bootloader to use? (hint: not optiboot!)
dpavlin@blue:~$ ard-parse-boards nano328 bootloader.file
ATmegaBOOT_168_atmega328.hex

Ok, now flash it!
dpavlin@blue:~$ avrdude -c buspirate -P /dev/ttyUSB0 -p m328p -U flash:w:/usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex

Detecting BusPirate...
**
BusPirate: using BINARY mode
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e950f
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: reading input file "/usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex"
avrdude: input file /usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex auto detected as Intel Hex
avrdude: writing flash (32670 bytes):

Writing | ################################################## | 100% 56.84s

avrdude: 32670 bytes of flash written
avrdude: verifying flash memory against /usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex:
avrdude: load data flash data from input file /usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex:
avrdude: input file /usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex auto detected as Intel Hex
avrdude: input file /usr/share/arduino/hardware/arduino/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex contains 32670 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 55.22s

avrdude: verifying ...
avrdude: 32670 bytes of flash verified

avrdude: safemode: Fuses OK

avrdude done.  Thank you.

After re‑flash using bus pirate as ISP from Arduino GUI fuses changed:
avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as DA
avrdude: safemode: efuse reads as 5
avrdude: safemode: Fuses OK

usbasp bootloader update
Sun Jan 12 11:27:34 2020] usb 8-2: new low-speed USB device number 4 using uhci_hcd
[Sun Jan 12 11:27:34 2020] usb 8-2: New USB device found, idVendor=16c0, idProduct=05dc, bcdDevice= 1.02
[Sun Jan 12 11:27:34 2020] usb 8-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[Sun Jan 12 11:27:34 2020] usb 8-2: Product: USBasp
[Sun Jan 12 11:27:34 2020] usb 8-2: Manufacturer: www.fischl.de

dpavlin@x200:~$ avrdude -v -patmega328p -cusbasp

avrdude: Version 6.3-20171130
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/etc/avrdude.conf"
         User configuration file is "/home/dpavlin/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : usb
         Using Programmer              : usbasp
         AVR Part                      : ATmega328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         RESET disposition             : dedicated
         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       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 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 : usbasp
         Description     : USBasp, http://www.fischl.de/usbasp/

avrdude: auto set sck period (because given equals null)
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as DA
avrdude: safemode: efuse reads as FD

avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as DA
avrdude: safemode: efuse reads as FD
avrdude: safemode: Fuses OK (E:FD, H:DA, L:FF)

avrdude done.  Thank you.

flash ond nano bootloader
this is old nano bootloader, it doesn't work on 115200 but on 57600 with avrdude
dpavlin@x200:~$ avrdude -v -patmega328p -cusbasp -U flash:w:/tmp/nuc/opt/arduino/hardware/arduino/avr/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex

flash optiboot
dpavlin@x200:~$ avrdude -v -patmega328p -cusbasp -U flash:w:/tmp/nuc/opt/arduino/hardware/arduino/avr/bootloaders/optiboot/optiboot_atmega328.hex

add bus pirate to arduino GUI
http://taylanayken.wordpress.com/2011/05/04/using‑bus‑pirate‑with‑arduino‑ide/ 
root@blue:~# grep buspirate /usr/share/arduino/hardware/arduino/programmers.txt
buspirate.name=The Bus Pirate
buspirate.communication=serial
buspirate.protocol=buspirate

Simulators/Emulators
emulino
console output, somewhat large network on github
https://github.com/ghewgill/emulino 
simuino
ncurses interface, single stepping, doesn't have source control link, can't compile it
http://code.google.com/p/simuino/ 
emulare
Requres .net, need to test it with mono
http://emulare.sourceforge.net/ 
simavr
• http://gitorious.org/simavr 
• https://github.com/buserror‑uk/simavr  (more up‑to‑date according to mailing list)
• https://groups.google.com/forum/#!forum/simavr 
programming sketches
• https://github.com/nickgammon/arduino_sketches 
DebugWire protocol
http://www.ruemohr.org/docs/debugwire.html 
Internal ADC reference
https://github.com/SensorsIot/ADC_Test/blob/master/ADC_Test.ino