Windows GUI/Controller for MySensors

[rvendrame]

@scalz, thanks for the reply. BTW, did you see this?

Well, with standard bootloader (working), my pro-minis have fuses as FF DA 05 (Low/High/Ext).

The MYSBootloader.hex boot loader (not working) is set in boards.txt with F7 DA 06.

I have played with all possible combinations (including changing values in boards.txt), no luck.

Maybe I have to compile my own version of MYSBootloader? Sorry, this is all new to me...

Thx again

[scalz]

@rvendrame: Hi I don't have a mac. But I use a similar tool for win (avrdudess). but your link seems ok.
You don't have to recompile MYSBootloader. MYSBootloader needs to match fuses. If not, it will blink like you have seen. Do you have an usbasp? very useful. So you need to burn fuses F7 DA 06. Did you try that? And then burn bootloader.
Be careful when burning fuses, don't try combination or you will semi-brick atmel chip (meaning you could not be able to reprogram it normal spi way). Never enable RSTDISBL and DWEN bits in fuse. You can see all of this here http://www.engbedded.com/fusecalc/ very useful too!

If in future you want to test new ota, I have made a small breadboard to test it. You can find it here : https://oshpark.com/profiles/scalz You will need to solder eeprom and atsha.

[rvendrame]

@scalz, yes I have tried to burn fuses F7 DA 06, and then MYSBootloader, no joy.

Maybe the main diference is the low fuse F7 ( = Ext.Clock full-swing Crystal ) , as my pro-minis run fine with FF ( = Ext. Crystal Osc 8.MHz ) ?

[rvendrame]

@scalz , one more thing: What speed did you set? The AVRFuses seems to work on at 19200 bps --- Could this be a problem?
And moreover --- You mentioned that extra eprom is not required --- But what about atsha? I don't have that either... (just pro-mini + radio ). Is it required for OTA?

[scalz]

@rvendrame: I am not at home at this moment. but I will check. baudrate is already set up in .hex and in boards.txt . So I think it should work..strange thing. I don't know MYSBootloader so. maybe grandmaster @Tekka have an idea:grinning: maybe something has changed. I don't know.

extra eeprom is for new ota in mysensors 1.5
ATSHA is optional, it is just on the board too. It is for authentication in 1.5 too.

[rvendrame]

@scalz said:

extra eeprom is for new ota in mysensors 1.5

I'm using 1.5 --- So do I need the extra eprom ?

[scalz]

no. you don't need it.
two ota bootloaders are available for mysensors. MYSBootloader and Dualoptiboot. MYSBootloader does not require extra eeprom. Dualoptiboot needs it. sorry for confusion:smirk:

[rvendrame]

@scalz said:

MYSBootloader does not require extra eeprom.

No problem, that's clear. Any other idea? The only thing I could progress was to catch the firmware upload in verbose mode (see bellow, it looks ok to me).

One question: Is it okay to have "Boot Flash size = 1024 words" , and the .hex file having ~32Kb ? More strange is that file has 5.676 bytes when I check it via Mac finder.

avrdude: input file /Users/i007897/Dropbox/Bench/Arduino/hardware/MySensors/avr/bootloaders/MySensors/MYSBootloader.hex contains 32722 bytes    <<<<<<< ????? 

/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -cstk500v1 -P/dev/cu.usbmodem1421 -b19200 -e -Ulock:w:0x3F:m -Uefuse:w:0x06:m -Uhfuse:w:0xDA:m -Ulfuse:w:0xF7:m 

avrdude: Version 6.0.1, compiled on Apr 14 2015 at 16:30:25
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/i007897/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/cu.usbmodem1421
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 19200
         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 : 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

Reading | ################################################## | 100% 0.05s

avrdude: Device signature = 0x1e950f
avrdude: erasing chip
avrdude: reading input file "0x3F"
avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.02s

avrdude: 1 bytes of lock written
avrdude: verifying lock memory against 0x3F:
avrdude: load data lock data from input file 0x3F:
avrdude: input file 0x3F contains 1 bytes
avrdude: reading on-chip lock data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of lock verified
avrdude: reading input file "0x06"
avrdude: writing efuse (1 bytes):

Writing | ################################################## | 100% 0.06s

avrdude: 1 bytes of efuse written
avrdude: verifying efuse memory against 0x06:
avrdude: load data efuse data from input file 0x06:
avrdude: input file 0x06 contains 1 bytes
avrdude: reading on-chip efuse data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of efuse verified
avrdude: reading input file "0xDA"
avrdude: writing hfuse (1 bytes):

Writing | ################################################## | 100% 0.02s

avrdude: 1 bytes of hfuse written
avrdude: verifying hfuse memory against 0xDA:
avrdude: load data hfuse data from input file 0xDA:
avrdude: input file 0xDA contains 1 bytes
avrdude: reading on-chip hfuse data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of hfuse verified
avrdude: reading input file "0xF7"
avrdude: writing lfuse (1 bytes):

Writing | ################################################## | 100% 0.06s

avrdude: 1 bytes of lfuse written
avrdude: verifying lfuse memory against 0xF7:
avrdude: load data lfuse data from input file 0xF7:
avrdude: input file 0xF7 contains 1 bytes
avrdude: reading on-chip lfuse data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of lfuse verified

Fuse burn: 

avrdude done.  Thank you.


/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -cstk500v1 -P/dev/cu.usbmodem1421 -b19200 -Uflash:w:/Users/i007897/Dropbox/Bench/Arduino/hardware/MySensors/avr/bootloaders/MySensors/MYSBootloader.hex:i -Ulock:w:0x0F:m 

avrdude: Version 6.0.1, compiled on Apr 14 2015 at 16:30:25
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/i007897/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/cu.usbmodem1421
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 19200
         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 : 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

Reading | ################################################## | 100% 0.05s

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 "/Users/i007897/Dropbox/Bench/Arduino/hardware/MySensors/avr/bootloaders/MySensors/MYSBootloader.hex"
avrdude: writing flash (32722 bytes):

Writing | ################################################## | 100% 0.00s

avrdude: 32722 bytes of flash written
avrdude: verifying flash memory against /Users/i007897/Dropbox/Bench/Arduino/hardware/MySensors/avr/bootloaders/MySensors/MYSBootloader.hex:
avrdude: load data flash data from input file /Users/i007897/Dropbox/Bench/Arduino/hardware/MySensors/avr/bootloaders/MySensors/MYSBootloader.hex:
avrdude: input file /Users/i007897/Dropbox/Bench/Arduino/hardware/MySensors/avr/bootloaders/MySensors/MYSBootloader.hex contains 32722 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...
avrdude: 32722 bytes of flash verified
avrdude: reading input file "0x0F"
avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.05s

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% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of lock verified

avrdude done.  Thank you.

And

[tekka]

@rvendrame weird...the .hex file size is 5676 bytes (this is the intel hex format and MYSBootloader is under 2kb, so 1024 words are ok). The 32722 bytes are the cause of the problem...
You mentioned that burning the standard bootloader revives your Arduino - can you post the verbose mode output as comparison?

[rvendrame]

@tekka said:

an you post the verbose mode output as comparison?

Sure, here it is. Very similar (including the size of .hex file)... strange...

/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -cstk500v1 -P/dev/cu.usbmodem1421 -b19200 -e -Ulock:w:0x3F:m -Uefuse:w:0x05:m -Uhfuse:w:0xDA:m -Ulfuse:w:0xFF:m 

avrdude: Version 6.0.1, compiled on Apr 14 2015 at 16:30:25
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/i007897/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/cu.usbmodem1421
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 19200
         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 : 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

Reading | ################################################## | 100% 0.05s

avrdude: Device signature = 0x1e950f
avrdude: erasing chip
avrdude: reading input file "0x3F"
avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.02s

avrdude: 1 bytes of lock written
avrdude: verifying lock memory against 0x3F:
avrdude: load data lock data from input file 0x3F:
avrdude: input file 0x3F contains 1 bytes
avrdude: reading on-chip lock data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of lock verified
avrdude: reading input file "0x05"
avrdude: writing efuse (1 bytes):

Writing | ################################################## | 100% 0.06s

avrdude: 1 bytes of efuse written
avrdude: verifying efuse memory against 0x05:
avrdude: load data efuse data from input file 0x05:
avrdude: input file 0x05 contains 1 bytes
avrdude: reading on-chip efuse data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of efuse verified
avrdude: reading input file "0xDA"
avrdude: writing hfuse (1 bytes):

Writing | ################################################## | 100% 0.02s

avrdude: 1 bytes of hfuse written
avrdude: verifying hfuse memory against 0xDA:
avrdude: load data hfuse data from input file 0xDA:
avrdude: input file 0xDA contains 1 bytes
avrdude: reading on-chip hfuse data:

Reading | ################################################## | 100% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of hfuse verified
avrdude: reading input file "0xFF"
avrdude: writing lfuse (1 bytes):

Writing | ################################################## | 100% 0.06s

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% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of lfuse verified

avrdude done.  Thank you.

/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -cstk500v1 -P/dev/cu.usbmodem1421 -b19200 -Uflash:w:/Applications/Arduino 1.6.4.app/Contents/Java/hardware/arduino/avr/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex:i -Ulock:w:0x0F:m 

avrdude: Version 6.0.1, compiled on Apr 14 2015 at 16:30:25
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino 1.6.4.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/i007897/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/cu.usbmodem1421
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 19200
         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 : 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

Reading | ################################################## | 100% 0.05s

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 "/Applications/Arduino 1.6.4.app/Contents/Java/hardware/arduino/avr/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex"
avrdude: writing flash (32670 bytes):

Writing | ################################################## | 100% 0.00s

avrdude: 32670 bytes of flash written
avrdude: verifying flash memory against /Applications/Arduino 1.6.4.app/Contents/Java/hardware/arduino/avr/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex:
avrdude: load data flash data from input file /Applications/Arduino 1.6.4.app/Contents/Java/hardware/arduino/avr/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex:
avrdude: input file /Applications/Arduino 1.6.4.app/Contents/Java/hardware/arduino/avr/bootloaders/atmega/ATmegaBOOT_168_atmega328.hex contains 32670 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...
avrdude: 32670 bytes of flash verified
avrdude: reading input file "0x0F"
avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.05s

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% 0.02s

avrdude: verifying ...
avrdude: 1 bytes of lock verified

avrdude done.  Thank you.

[scalz]

@rvendrame: when you try to upload a sketch, do you use ftdi? because I think you can't upload with ftdi in MYSBootloader. just ota. I looked quickly at the code. Am I right @tekka ? If you want ota+ftdi options, you must use dualoptiboot.

[tekka]

@scalz: for flashing bootloaders you have to communicate to the MCU via SPI (e.g. via USBasp, ArduinoISP, Atmel STK500, etc.) but not the usual (ftdi) serial interface.
MYSBootloader 1.1 supports only OTA sketch uploads (at the moment), this is right - but not related to the issue of @rvendrame

[rvendrame]

@scalz , @tekka, I'm using "Arduino as ISP" to burn the bootloader. I have my arduino Uno connected to mac via USB, and running on it the "ArduinoISP" sketch delivered with IDE.

The pins VCC, GND, 11, 12, 13 from Uno are connected to same pins of the pro-mini (the one being programmed). Pin 10 from uno goes to pro-mini's reset pin.

In summary, this scenario. It works perfectly for the standard pro-mini bootloader. I had success with both 3.3V and 5V versions.

To upload my sketches: I understand that I have to compile it, move the generated .hex file to the MYSController "Firmware" folder, and load it via 'Node -> Assign FW' . I did it this part with some sense benders that I have here, and it worked perfectly --- That made me thinking in re-flashing all pro-minis that I have with MYSbootloader ;-)

The problem is that my pro-minis get 'bricked' after burning the MYSbootloader --- pin led flashes randomly , no serial-monitor, I don't think they are really running.

Just to be 100% sure --- I just need the pro-mini itself connected during the "Tools -> Burn bootloader" ? No radio, no extra eprom, no atsha, ... right?

I tried to connect the radio to pro-mini after I burned the MYS, as a last desperated try (who know it would 'wake up' ). But no joy ;-)

Thx!

[rvendrame]

@scalz, @tekka, maybe if I re-compile the MYSbootloader to match my current fuses? I was trying to find a how-to, but could not find anything related. Perhaps you can give me some guidance on that too?

[f1dev]

Very interesting, I´m having the exact issues with my pro minis.. It would be very helpful with a " how-to" to compile the Mysbootloader for pro minis 3.3V 8mhz.

Kindly

[rvendrame]

@f1dev, I'm just trying to thinking 'out of the box'. I really don't know why the MYSBootloader doesn't work (while the original arduino bootloader does).

@scalz, @tekka, looking at MYSBootloader makefile at github, I noticed you are using

ISP_PORT = com5
ISP_SPEED = 115200
ISP_PROTOCOL = stk500v2
ISP_MCU = m328p 

Well, my 'Arduino as ISP' only work as 'stk500v1' and 19200 bps --- Any other combination causes the "Yikes! invalid signature found" in avrdude, or no response at all (time-out). Could be that a different avr itself would introduce "strange bytes" during bootloader burning?

[tekka]

@rvendrame let me try some things here - can you make sure, that the MYSBootloader your are trying to flash is the one from the library and/or MYSController folder (maybe you can upload it here)?
Importantly, there is no need to re-compile MYSBootloader as it has been successfully tested down to 3.3V and 125kHz pro-minis (!). Can you please update your Arduino IDE to 1.6.5 so that we both run the same version?

[tekka]

@rvendrame the speed is not really an issue here - the bytes are verified after flashing...

[rvendrame]

@tekka, thank you so much. I have downloaded the .hex again from github, just for the sake. Anyway it is here MYSBootloader.hex I'm using.

[tekka]

@rvendrame said:

Hello guys, I'm trying to burn the MYSBootloader.hex into some Pro minis (clones) here, however after burning it, they get somehow 'bricked' :

• I'm using my Uno "as ISP" on IDE 1.6.4
• I've followed the step-by-step tutorial posted above by @tekka
• My pro-minis are 5V, 16Mhz, external clock , 328p, supposedly a perfect match with 'boards.txt' info...
• "Burn bootloader" ends successful, with "Done burning boot loader" message.
• After that, the pro-mini pin 13 led flashes in a kind of random pattern, and it is not possible to upload any sketch, nor any kind of serial monitor on any speed.
• I can revert it, by selecting the standard 'Arduino Pro or Pro Mini' board , and burn boot loader again. It makes the pro-mini gets back to live, I can upload my sketches and serial monitor it.

So my questions:

• I don't have extra eprom connected --- Is it mandatory? I've read somewhere that it can be disabled, but can't find the instructions anymore...
• Fuse adjustments?
• What else can I do in order to troubleshooting it?

Thanks!

How do you know that the bootloader is not functioning properly? you connected the RF module as mentioned earlier? The led is blinking irregularly due to SPI...Do you get a startup message (from MYSBootloader) in MYSController?

The 327xx bytes mentioned in verbose mode are correct - the entire flash is overwritten...