Building the FabTinyISP

Date

Explanation

16/2/17

Our instructor initiated us to ISP --- in-system-programming or in-circuit-programming --- using ATtiny45 micro controller IC. First, the PCB sketch was was copied to the system connected to the PCB miller. The circuit is downloadable from http://fab.cba.mit.edu/classes/863.16/doc/projects/ftsmin/index.html - (a copy of which was with the instructor). Used Roland MODELA 3D plotter MDX-20 for printing the PCB on a paper-epoxy bare board. (1) The instructor removed and refixed a new sheet called "sacrificial bed" on top of the metal surface underneath the milling head. (2) The existing print head was removed using an allenkey meant to unscrew it. Then using a 1/64 bit, the circuit was constructed by etching out the copper layers appropriately. Then using a 1/32 bit, the PCB was cut out resembling a USB pen drive. The plotter Plotter name Settings PCB milling Video The PCB drawing(Courtesy FabAcademy) (3)There were 9 different components to be soldered on to the PCB. For me identifying them once removed from the bin was difficult. Hence, I cut out  a sheet of cardboard of  3x3 round slots from the waste cardboards. Actually it was the base sheet of the laser cutting assignment by another fellow. On the base of each slot I wrote numbers from 1 to 9, and kept a sheet of the components again numbered from 1 to 9. Components Inventory (3) The soldering of these tiny components was a tedious task for this old man, but it was me who completed first here at my centre! One component I wrongly soldered was helped by the instructor and got resoldered. The Schematic(Courtesy FabAcademy) Soldering station The Circuit (4) Connected to the PC the LED was glowing! dmesg command reported sensing of something in the USB port! (1) Before connecting [fab@ask ~]$ dmesg .......... [38727.941787] scsi host7: usb-storage 1-1.4:1.0 [38728.967041] scsi 7:0:0:0: CD-ROM            Linux    File-CD Gadget   0310 PQ: 0 ANSI: 2 [38728.969100] sr 7:0:0:0: [sr1] scsi-1 drive [38728.969208] sr 7:0:0:0: Attached scsi CD-ROM sr1 [39801.827813] usb 1-1.4: USB disconnect, device number 23 (2) After connecting the USB circuit [fab@ask ~]$ dmesg .......... 38728.969208] sr 7:0:0:0: Attached scsi CD-ROM sr1 [39801.827813] usb 1-1.4: USB disconnect, device number 23 [41377.223635] usb 1-1.5: new low-speed USB device number 24 using ehci-pci [41377.296991] usb 1-1.5: device descriptor read/64, error -32 [41377.477005] usb 1-1.5: device descriptor read/64, error -32 [41377.656975] usb 1-1.5: new low-speed USB device number 25 using ehci-pci [41377.730291] usb 1-1.5: device descriptor read/64, error -32 [41377.910345] usb 1-1.5: device descriptor read/64, error -32 [41378.090262] usb 1-1.5: new low-speed USB device number 26 using ehci-pci [41378.503638] usb 1-1.5: device not accepting address 26, error -32 [41378.576962] usb 1-1.5: new low-speed USB device number 27 using ehci-pci [41378.990292] usb 1-1.5: device not accepting address 27, error -32 [41378.990421] usb 1-1-port5: unable to enumerate USB device [fab@ask ~]$ lsusb Bus 002 Device 002: ID 8087:8000 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 018: ID 046d:c077 Logitech, Inc. M105 Optical Mouse Bus 001 Device 029: ID 1781:0c9f Multiple Vendors USBtiny Bus 001 Device 003: ID 413c:2107 Dell Computer Corp. Bus 001 Device 002: ID 8087:8008 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 002: ID 0480:a208 Toshiba America Inc Canvio Basics 2TB USB 3.0 Portable Hard Drive Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub (No USB device detected) (5) Then a 30CM FRC 6-wire cable was crimped (without crimping tool -  with the help of the instructor we tried different techniques!) both ends onto two 6-pin connectors. Semi automatic Crimping! The cable and circuit (6) Then the PCB was connected to the 'programmer'   circuit of the instructor. Meanwhile avrdude is installed and and proceeded as per the instructions in the page http://fab.cba.mit.edu/classes/863.16/doc/projects/ftsmin/index.html. The right polarity When connected for programming avrdude installation --------------------------------- [fab@ask ~]$ sudo pacman -S  avrdude gcc-avr avr-libc make [sudo] password for fab: error: target not found: gcc-avr warning: make-4.2.1-1 is up to date -- reinstalling [fab@ask ~]$ sudo pacman -S  avrdude avr-libc resolving dependencies... looking for conflicting packages... Packages (8) avr-binutils-2.27-2  avr-gcc-6.3.0-1  confuse-3.0-1  elfutils-0.168-1              libftdi-1.3-3  libusb-compat-0.1.5-1  avr-libc-2.0.0-1  avrdude-1:6.3-2 Total Installed Size:  120.47 MiB :: Proceed with installation? [Y/n] y ..... Downloaded the firmware from http://fab.cba.mit.edu/classes/863.16/doc/projects/ftsmin/fts_firmware_bdm_v1.zip. Further steps [fab@ask ~]$ mkdir ~/avr [fab@ask ~]$ cd ~/avr [fab@ask avr]$ ll total 224 -rw-r--r-- 1 fab fab 113473 Feb 16 21:47 fts_firmware_bdm_v1.zip [fab@ask avr]$ unzip fts_firmware_bdm_v1.zip Archive: fts_firmware_bdm_v1.zip creating: fts_firmware_bdm_v1/ inflating: fts_firmware_bdm_v1/Makefile inflating: fts_firmware_bdm_v1/usbconfig.h creating: fts_firmware_bdm_v1/usbdrv/ inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm165.inc inflating: fts_firmware_bdm_v1/usbdrv/oddebug.h inflating: fts_firmware_bdm_v1/usbdrv/asmcommon.inc inflating: fts_firmware_bdm_v1/usbdrv/usbconfig-prototype.h inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm128.inc inflating: fts_firmware_bdm_v1/usbdrv/usbdrv.h inflating: fts_firmware_bdm_v1/usbdrv/CommercialLicense.txt inflating: fts_firmware_bdm_v1/usbdrv/usbportability.h inflating: fts_firmware_bdm_v1/usbdrv/USB-IDs-for-free.txt inflating: fts_firmware_bdm_v1/usbdrv/oddebug.c inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm18-crc.inc inflating: fts_firmware_bdm_v1/usbdrv/USB-ID-FAQ.txt inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm20.inc inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm.S inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm16.inc inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm15.inc inflating: fts_firmware_bdm_v1/usbdrv/Readme.txt inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm12.inc inflating: fts_firmware_bdm_v1/usbdrv/usbdrvasm.asm inflating: fts_firmware_bdm_v1/usbdrv/usbdrv.c inflating: fts_firmware_bdm_v1/usbdrv/Changelog.txt inflating: fts_firmware_bdm_v1/usbdrv/License.txt inflating: fts_firmware_bdm_v1/main.c ----------------------- [fab@ask avr]$ cd fts_firmware_bdm_v1 [fab@ask fts_firmware_bdm_v1]$ ll total 36 -rw-r--r-- 1 fab fab 11872 Oct 13 23:08 main.c -rw-r--r-- 1 fab fab 1923 Oct 14 04:10 Makefile -rw-r--r-- 1 fab fab 12448 Oct 13 23:08 usbconfig.h drwxr-xr-x 2 fab fab 4096 Oct 13 23:08 usbdrv [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ make avr-gcc -mmcu=attiny45 -Wall -DF_CPU=16500000UL -I. -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -Iusbdrv -c main.c -o main.o main.c:109:13: warning: always_inline function might not be inlinable [-Wattributes] static void delay ( void ) ^~~~~ avr-gcc -mmcu=attiny45 -Wall -DF_CPU=16500000UL -I. -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -Iusbdrv -c usbdrv/usbdrv.c -o usbdrv/usbdrv.o avr-gcc -mmcu=attiny45 -Wall -DF_CPU=16500000UL -I. -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -Iusbdrv -c usbdrv/oddebug.c -o usbdrv/oddebug.o avr-gcc -x assembler-with-cpp -mmcu=attiny45 -Wall -DF_CPU=16500000UL -I. -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -Iusbdrv -c usbdrv/usbdrvasm.S -o usbdrv/usbdrvasm.o avr-gcc -mmcu=attiny45 -o fts_firmware.elf main.o usbdrv/usbdrv.o usbdrv/oddebug.o usbdrv/usbdrvasm.o avr-size -C --mcu=attiny45 fts_firmware.elf AVR Memory Usage ---------------- Device: attiny45 Program: 2448 bytes (59.8% Full) (.text + .data + .bootloader) Data: 75 bytes (29.3% Full) (.data + .bss + .noinit) avr-objcopy -j .text -j .data -O ihex fts_firmware.elf fts_firmware.hex [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ ll -tr total 60 -rw-r--r-- 1 fab fab 12448 Oct 13 23:08 usbconfig.h -rw-r--r-- 1 fab fab 11872 Oct 13 23:08 main.c -rw-r--r-- 1 fab fab 1923 Oct 14 04:10 Makefile -rw-r--r-- 1 fab fab 3612 Feb 16 21:49 main.o drwxr-xr-x 2 fab fab 4096 Feb 16 21:49 usbdrv -rwxr-xr-x 1 fab fab 10624 Feb 16 21:49 fts_firmware.elf -rw-r--r-- 1 fab fab 6911 Feb 16 21:49 fts_firmware.hex [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ cat Makefile # Generic AVR Makefile - Adapted for FabTinyStar # Brian Mayton <bmayton@media.mit.edu> # # 'make' builds the .hex file. # 'make flash' uses the programmer to load it onto the target chip. # 'make fuses' programs the fuse bits on the target chip. # 'make rstdisbl' blows the reset fuse. # 'make clean' removes all autogenerated files. # OBJECTS should list all of the object files for the program (e.g. for each # .c file, list a corresponding .o file here.) APPLICATION just specifies the # name of the hex/elf files, and can be whatever you want. OBJECTS = main.o usbdrv/usbdrv.o usbdrv/oddebug.o usbdrv/usbdrvasm.o APPLICATION = fts_firmware # Set up which MCU you're using, and what programmer, and the clock speed # here. MCU = attiny45 PROGRAMMER ?= usbtiny F_CPU = 16500000UL # Fuse bit settings EFUSE=0xFF HFUSE=0xDD LFUSE=0xE1 # Fuse bit settings with reset pin disabled HFUSE_RSTDISBL=0x5D # Edit these if you want to use different compilers CC = avr-gcc OBJCOPY = avr-objcopy SIZE = avr-size AVRDUDE = avrdude # Compiler and linker flags CFLAGS=-mmcu=$(MCU) -Wall -DF_CPU=$(F_CPU) -I. -funsigned-char \ -funsigned-bitfields -fpack-struct -fshort-enums -Os -Iusbdrv LDFLAGS=-mmcu=$(MCU) all: $(APPLICATION).hex clean: rm -f usbdrv/*.o rm -f *.hex *.elf *.o %.hex: %.elf $(OBJCOPY) -j .text -j .data -O ihex $< $@ $(APPLICATION).elf: $(OBJECTS) $(CC) $(LDFLAGS) -o $@ $^ $(SIZE) -C --mcu=$(MCU) $@ %.o: %.c $(CC) $(CFLAGS) -c $< -o $@ %.o: %.S $(CC) -x assembler-with-cpp $(CFLAGS) -c $< -o $@ flash: all $(AVRDUDE) -p $(MCU) -c $(PROGRAMMER) -P usb -e \ -U flash:w:$(APPLICATION).hex fuses: $(AVRDUDE) -p $(MCU) -c $(PROGRAMMER) -P usb \ -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m \ -U efuse:w:$(EFUSE):m rstdisbl: $(AVRDUDE) -p $(MCU) -c $(PROGRAMMER) -P usb \ -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE_RSTDISBL):m \ -U efuse:w:$(EFUSE):m .PHONY: all clean install fuses [fab@ask fts_firmware_bdm_v1]$ make flash avrdude -p attiny45 -c usbtiny -P usb -e \ -U flash:w:fts_firmware.hex avrdude: Warning: cannot open USB device: Permission denied avrdude: Error: Could not find USBtiny device (0x1781/0xc9f) avrdude done. Thank you. make: *** [Makefile:61: flash] Error 1 [fab@ask fts_firmware_bdm_v1]$ sudo make flash [sudo] password for fab: avrdude -p attiny45 -c usbtiny -P usb -e \ -U flash:w:fts_firmware.hex avrdude: initialization failed, rc=-1 Double check connections and try again, or use -F to override this check. avrdude done. Thank you. (7) To get rid of the requirement of  root permission to communicate with the USB PCB, I have created a file /etc/udev/rules.d/50-usb-devices.rules as per the instruction in the instructor's page http://archive.fabacademy.org/archives/2016/fablabtrivandrum/students/281/w6/w6.html USB Permission to user [fab@ask ~]$ cd /etc [fab@ask etc]$ cd udev [fab@ask udev]$ cd rules.d [fab@ask rules.d]$ ll total 0 [fab@ask rules.d]$ vi 50-usb-devices.rules [fab@ask rules.d]$ sudo vi 50-usb-devices.rules [sudo] password for fab: [fab@ask rules.d]$ ll total 4 -rw-r--r-- 1 root root 1040 Feb 16 22:19 50-usb-devices.rules [fab@ask rules.d]$ cat 50-usb-devices.rules # USBtinyISP Programmer rules SUBSYSTEMS=="usb", ATTRS{idVendor}=="1781", ATTRS{idProduct}=="0c9f", GROUP="users", MODE="0666" SUBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="0479", GROUP="users", MODE="0666" # USBasp Programmer rules http://www.fischl.de/usbasp/ SUBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="05dc", GROUP="users", MODE="0666" # Mdfly.com Generic (SiLabs CP2102) 3.3v/5v USB VComm adapter SUBSYSTEMS=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", GROUP="users", MODE="0666" #Atmel AVR Dragon (dragon_isp) rules SUBSYSTEM=="usb", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2107", GROUP="users", MODE="0666" #Atmel AVR JTAGICEMKII rules SUBSYSTEM=="usb", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2103", GROUP="users", MODE="0666" #Atmel Corp. AVR ISP mkII SUBSYSTEM=="usb", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2104", GROUP="users", MODE="0666" #Atmel Copr. JTAGICE3 SUBSYSTEM=="usb", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2140", GROUP="users", MODE="0666" [fab@ask rules.d]$ [fab@ask rules.d]$ sudo udevadm control --reload [fab@ask rules.d]$ udevadm trigger (8) make flash was still showing error! Instructor asked to check - avrdude -c usbtiny -p t45 -v. Error exists. First suspect was by module. Meanwhile another person was ready with his module. Tried error there still. Cable checked again error.  Exploration by the instructor revealed that the issue was with his module!! After the demo he has done some protective coatings to the module which lead to a loose contact at a fragile joint!!! Anyway when connected with another module, the rest of the process was smooth and the module made into a 'programmer' too quickly!! make flash error! --------------------------- [fab@ask fts_firmware_bdm_v1]$ sudo make flash [sudo] password for fab: avrdude -p attiny45 -c usbtiny -P usb -e \     -U flash:w:fts_firmware.hex avrdude: initialization failed, rc=-1          Double check connections and try again, or use -F to override          this check. avrdude done.  Thank you. make: *** [Makefile:61: flash] Error 1 Debugging (with wrong cable polarity on my USB PCB) ----------------- [fab@ask fts_firmware_bdm_v1]$ avrdude -c usbtiny -p t45 -v avrdude: Version 6.3, compiled on Nov  6 2016 at 21:45:03          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/fab/.avrduderc"          User configuration file does not exist or is not a regular file, skipping          Using Port                    : usb          Using Programmer              : usbtiny avrdude: usbdev_open(): Found USBtinyISP, bus:device: 001:029 avrdude: Warning: cannot open USB device: Permission denied avrdude: Error: Could not find USBtiny device (0x1781/0xc9f) avrdude done.  Thank you. Debugging (polarity corrected) [fab@ask fts_firmware_bdm_v1]$ sudo avrdude -c usbtiny -p t45 -v avrdude: Version 6.3, compiled on Nov 6 2016 at 21:45:03 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 "/root/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : usb Using Programmer : usbtiny avrdude: usbdev_open(): Found USBtinyISP, bus:device: 001:029 AVR Part : ATtiny45 Chip Erase delay : 4500 us PAGEL : P00 BS2 : P00 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 6 4 0 no 256 4 0 4000 4500 0xff 0xff flash 65 6 32 0 yes 4096 64 64 4500 4500 0xff 0xff signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00 lock 0 0 0 0 no 1 0 0 9000 9000 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 calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00 Programmer Type : USBtiny Description : USBtiny simple USB programmer, http://www.ladyada.net/make/usbtinyisp/ avrdude: programmer operation not supported avrdude: Using SCK period of 10 usec avrdude: initialization failed, rc=-1 Double check connections and try again, or use -F to override this check. avrdude done. Thank you. (((((((((((((((Error persists))))))))))))))))))) Now the the programmer circuit is replaced !!! [fab@ask fts_firmware_bdm_v1]$ avrdude -c usbtiny -p t45 -v avrdude: Version 6.3, compiled on Nov 6 2016 at 21:45:03 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/fab/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : usb Using Programmer : usbtiny avrdude: usbdev_open(): Found USBtinyISP, bus:device: 002:008 AVR Part : ATtiny45 Chip Erase delay : 4500 us PAGEL : P00 BS2 : P00 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 6 4 0 no 256 4 0 4000 4500 0xff 0xff flash 65 6 32 0 yes 4096 64 64 4500 4500 0xff 0xff signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00 lock 0 0 0 0 no 1 0 0 9000 9000 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 calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00 Programmer Type : USBtiny Description : USBtiny simple USB programmer, http://www.ladyada.net/make/usbtinyisp/ avrdude: programmer operation not supported avrdude: Using SCK period of 10 usec avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9206 (probably t45) avrdude: safemode: hfuse reads as DF avrdude: safemode: efuse reads as FF avrdude: safemode: hfuse reads as DF avrdude: safemode: efuse reads as FF avrdude: safemode: Fuses OK (E:FF, H:DF, L:62) avrdude done. Thank you.           ((((((((((Error Gone!!)))))))))))))   The Programming!!!!! ------------------------------------ [fab@ask fts_firmware_bdm_v1]$ make flash avrdude -p attiny45 -c usbtiny -P usb -e \ -U flash:w:fts_firmware.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9206 (probably t45) avrdude: erasing chip avrdude: reading input file "fts_firmware.hex" avrdude: input file fts_firmware.hex auto detected as Intel Hex avrdude: writing flash (2448 bytes): Writing | ################################################## | 100% 3.41s avrdude: 2448 bytes of flash written avrdude: verifying flash memory against fts_firmware.hex: avrdude: load data flash data from input file fts_firmware.hex: avrdude: input file fts_firmware.hex auto detected as Intel Hex avrdude: input file fts_firmware.hex contains 2448 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 4.90s avrdude: verifying ... avrdude: 2448 bytes of flash verified avrdude: safemode: Fuses OK (E:FF, H:DF, L:62) avrdude done. Thank you. Then configure the microcontroller. [fab@ask fts_firmware_bdm_v1]$ make fuses avrdude -p attiny45 -c usbtiny -P usb \ -U lfuse:w:0xE1:m -U hfuse:w:0xDD:m \ -U efuse:w:0xFF:m avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9206 (probably t45) avrdude: reading input file "0xE1" avrdude: writing lfuse (1 bytes): Writing | ################################################## | 100% 0.01s avrdude: 1 bytes of lfuse written avrdude: verifying lfuse memory against 0xE1: avrdude: load data lfuse data from input file 0xE1: avrdude: input file 0xE1 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 "0xDD" avrdude: writing hfuse (1 bytes): Writing | ################################################## | 100% 0.01s avrdude: 1 bytes of hfuse written avrdude: verifying hfuse memory against 0xDD: avrdude: load data hfuse data from input file 0xDD: avrdude: input file 0xDD 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 "0xFF" avrdude: writing efuse (1 bytes): Writing | ################################################## | 100% 0.00s avrdude: 1 bytes of efuse written avrdude: verifying efuse memory against 0xFF: avrdude: load data efuse data from input file 0xFF: avrdude: input file 0xFF contains 1 bytes avrdude: reading on-chip efuse data: Reading | ################################################## | 100% 0.00s avrdude: verifying ... avrdude: 1 bytes of efuse verified avrdude: safemode: Fuses OK (E:FF, H:DD, L:E1) avrdude done. Thank you. Then RST pin is converted as an I/O pin. As a side effect the device becomes write protected!! [fab@ask fts_firmware_bdm_v1]$ lsusb Bus 002 Device 008: ID 1781:0c9f Multiple Vendors USBtiny Bus 002 Device 002: ID 8087:8000 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 018: ID 046d:c077 Logitech, Inc. M105 Optical Mouse Bus 001 Device 031: ID 1781:0c9f Multiple Vendors USBtiny Bus 001 Device 003: ID 413c:2107 Dell Computer Corp. Bus 001 Device 002: ID 8087:8008 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 002: ID 0480:a208 Toshiba America Inc Canvio Basics 2TB USB 3.0 Portable Hard Drive Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ [fab@ask fts_firmware_bdm_v1]$ make rstdisbl avrdude -p attiny45 -c usbtiny -P usb \ -U lfuse:w:0xE1:m -U hfuse:w:0x5D:m \ -U efuse:w:0xFF:m avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9206 (probably t45) avrdude: reading input file "0xE1" avrdude: writing lfuse (1 bytes): Writing | ################################################## | 100% 0.00s avrdude: 1 bytes of lfuse written avrdude: verifying lfuse memory against 0xE1: avrdude: load data lfuse data from input file 0xE1: avrdude: input file 0xE1 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 "0x5D" avrdude: writing hfuse (1 bytes): Writing | ################################################## | 100% 0.01s avrdude: 1 bytes of hfuse written avrdude: verifying hfuse memory against 0x5D: avrdude: load data hfuse data from input file 0x5D: avrdude: input file 0x5D 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 "0xFF" avrdude: writing efuse (1 bytes): Writing | ################################################## | 100% 0.00s avrdude: 1 bytes of efuse written avrdude: verifying efuse memory against 0xFF: avrdude: load data efuse data from input file 0xFF: avrdude: input file 0xFF contains 1 bytes avrdude: reading on-chip efuse data: Reading | ################################################## | 100% 0.00s avrdude: verifying ... avrdude: 1 bytes of efuse verified avrdude: safemode: Fuses OK (E:FF, H:5D, L:E1) avrdude done. Thank you. (((((((DONE!!!))))))))))) Finally the testing. (1) This ckt is used to blow another ckt. (2) Another ckt was connected to my ckt as master and  checked its I/O ability. [fab@ask ~]$ avrdude -c usbtiny -p t45 -v avrdude: Version 6.3, compiled on Nov 6 2016 at 21:45:03 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/fab/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : usb Using Programmer : usbtiny avrdude: usbdev_open(): Found USBtinyISP, bus:device: 002:007 AVR Part : ATtiny45 Chip Erase delay : 4500 us PAGEL : P00 BS2 : P00 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 6 4 0 no 256 4 0 4000 4500 0xff 0xff flash 65 6 32 0 yes 4096 64 64 4500 4500 0xff 0xff signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00 lock 0 0 0 0 no 1 0 0 9000 9000 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 calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00 Programmer Type : USBtiny Description : USBtiny simple USB programmer, http://www.ladyada.net/make/usbtinyisp/ 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 = 0x1e9206 (probably t45) avrdude: safemode: hfuse reads as DF avrdude: safemode: efuse reads as FF avrdude: safemode: hfuse reads as DF avrdude: safemode: efuse reads as FF avrdude: safemode: Fuses OK (E:FF, H:DF, L:62) avrdude done. Thank you. (((Success)))) So the ISP PCB is milled, circuit is soldered, processor is burned, and tested - successfully. We have not disconnected the VCC from the Vprog ,which according to our instructor is not necessary!