Hey,
I've been watching a lot of tutorials and attempting to load an arduino bootloader onto my atmega8. Ultimately to make a led microcontroller. In my most recent attempt I used the atmega_board_detector off github. And got "failed to enter programming mode. Double-check wiring". Not sure what's going wrong. I have reddit post if you wanted photos: Reddit - Dive into anything
Does anyone know of a good tutorial on how to get an arduino bootloader onto an atmega8? Thanks
If you want to use the Arduino IDE, then I suggest installing MiniCore and using Arduino as ISP to burn the bootloader.
I've tried that too. But i just get this error.
avrdude error: Yikes! Invalid device signature.
avrdude error: expected signature for ATmega8 is 1E 93 07
Double check connections and try again, or use -F to override
this check.
Failed chip erase: uploading error: exit status 1
When you tried to burn the bootloader or when you tried to upload a sketch?
When i try to burn the bootloader
That is getting the Board Info of the Uno not the ATmega8 but that is not what you show in post #4
So I ask the same question again, did you get the error while burning the bootloader or while trying to upload a sketch?
Well I'm new to this. But once i set all you see in the pictures. I just press the "burn bootloader" at the bottom of the tools menu and that error comes up. It's been doing my head in since every tutorial i watch once they hit burn bootloader its done
Burning the bootloader to the ATmega8 is the same as doing it for the 328, even the pinout is the same. So any tutorial you find for the 328 should work for the 8
Try this procedure
but select ATmega8 as the processor
Next time you try, check the boxes for show verbose output during upload and compilation, it will provide more info.
They are located under File->preferences
You've helped a lot i tried again and this is the error out put
"C:\Users\James\AppData\Local\Arduino15\packages\MiniCore\tools\avrdude\7.2-arduino.1/bin/avrdude" "-CC:\Users\James\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.2/avrdude.conf" -v -patmega8 -cstk500v1 -PCOM6 -b19200 -e -Ulock:w:0xff:m -Uefuse:w:{bootloader.extended_fuses}:m -Uhfuse:w:0b11000111:m -Ulfuse:w:0b10111111:m
avrdude: Version 7.2-arduino.1
Copyright the AVRDUDE authors;
see https://github.com/avrdudes/avrdude/blob/main/AUTHORS
System wide configuration file is C:\Users\James\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.2\avrdude.conf
Using Port : COM6
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATmega8
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : possible i/o
RETRY pulse : SCK
Serial program mode : yes
Parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Alias Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- -------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 4 20 128 0 no 512 4 0 9000 9000 0xff 0xff
flash 33 10 64 0 yes 8192 64 128 4500 4500 0xff 0x00
lfuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
signature 0 0 0 0 no 3 1 0 0 0 0x00 0x00
calibration 0 0 0 0 no 4 1 0 0 0 0x00 0x00
Programmer Type : STK500
Description : Atmel STK500 version 1.x firmware
Hardware Version: 2
Firmware Version: 1.18
Topcard : Unknown
Vtarget : 0.0 V
Varef : 0.0 V
Oscillator : Off
SCK period : 0.1 us
avrdude: AVR device initialized and ready to accept instructions
avrdude: device signature = 0x000000 (retrying)
avrdude: device signature = 0x000000 (retrying)
avrdude: device signature = 0x000000
avrdude main() error: Yikes! Invalid device signature.
avrdude main() error: expected signature for ATmega8 is 1E 93 07
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
Failed chip erase: uploading error: exit status 1
From the picture in post #3, it seems you are using an Uno as ISP.
Have you tried connecting a 10uF cap between Reset and ground on the Uno (after uploading the ArduinoISP sketch)?
device signature = 0x000000
Usually indicates you have a wiring error somewhere.
May a bad or loose connection on a breadboard, a bad jumper etc.
Do you have MOSI->MOSI and MISO->MISO?
I rewired the whole thing on a different breadboard with new cables and put a new 10uf capacitor between reset and gnd.
avrdude: Version 7.2-arduino.1
Copyright the AVRDUDE authors;
see https://github.com/avrdudes/avrdude/blob/main/AUTHORS
System wide configuration file is C:\Users\James\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.2\avrdude.conf
Using Port : COM6
Using Programmer : stk500v1
Overriding Baud Rate : 19200
AVR Part : ATmega8
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : possible i/o
RETRY pulse : SCK
Serial program mode : yes
Parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Alias Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- -------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 4 20 128 0 no 512 4 0 9000 9000 0xff 0xff
flash 33 10 64 0 yes 8192 64 128 4500 4500 0xff 0x00
lfuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 1 0 4500 4500 0x00 0x00
signature 0 0 0 0 no 3 1 0 0 0 0x00 0x00
calibration 0 0 0 0 no 4 1 0 0 0 0x00 0x00
Programmer Type : STK500
Description : Atmel STK500 version 1.x firmware
Hardware Version: 2
Firmware Version: 1.18
Topcard : Unknown
Vtarget : 0.0 V
Varef : 0.0 V
Oscillator : Off
SCK period : 0.1 us
avrdude: AVR device initialized and ready to accept instructions
avrdude: device signature = 0x1e9307 (probably m8)
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: processing -U flash:w:C:\Users\James\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.2/bootloaders/urboot/atmega8/watchdog_1_s/autobaud/uart0_rxd0_txd1/led+b5/urboot_atmega8_pr_ee_ce.hex:i
avrdude: reading input file C:\Users\James\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.2/bootloaders/urboot/atmega8/watchdog_1_s/autobaud/uart0_rxd0_txd1/led+b5/urboot_atmega8_pr_ee_ce.hex for flash
with 364 bytes in 2 sections within [0x1e80, 0x1fff]
using 6 pages and 20 pad bytes
avrdude: writing 364 bytes flash ...
Writing | ################################################## | 100% 0.05s
avrdude: 364 bytes of flash written
avrdude: verifying flash memory against C:\Users\James\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\3.0.2/bootloaders/urboot/atmega8/watchdog_1_s/autobaud/uart0_rxd0_txd1/led+b5/urboot_atmega8_pr_ee_ce.hex
Reading | ################################################## | 100% 0.00s
avrdude: 364 bytes of flash verified
avrdude: processing -U lock:w:0xff:m
avrdude: reading input file 0xff for lock
with 1 byte in 1 section within [0, 0]
avrdude: writing 1 byte lock ...
avrdude: 1 byte of lock written
avrdude: verifying lock memory against 0xff
avrdude: 1 byte of lock verified
avrdude done. Thank you.
Does this mean the bootloader is on the atmega8?
Thanks for the advice... i change things see post 15
yep!
Yeah boii...
Thank you jim-p and willem43 for all the help. I painstakingly figured out the breadboard was faulty. Thanks
Glad you finally got it working.
Now have fun!
Will do. Thanks again. I thought iwas doing it right but trouble shooting that much really gave me a good understanding of how the process works