💬 Stamp size MySensor node


  • Hardware Contributor

    @NeverDie
    I have a use case where I need the clock to be acurate. For realy low power nodes like the ones with reed switches, I also prefer the internal oscillator.



  • @GertSanders

    Goedenavond Gert,

    What's your boards.txt file is saying please? I uploaded the bootloader (optiboot_atmega328_08M_038400_D8) and all went OK until I upload my first sketch.
    After that I am getting:

    avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x32
    avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x0f
    avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xfb
    avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x32
    avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x0f
    avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x73
    avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xff
    avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x32
    avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x0f
    avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xfb
    

    I have to upload the bootloader again in order to upload the sketch - something is clearly not working. This is my extract from boards.txt:

    BlueBoard.menu.mhz.8Mhz= 8Mhz - internal oscillator D8 LED for atmega328-tqfp
    BlueBoard.menu.mhz.8Mhz.bootloader.low_fuses=0xE2
    BlueBoard.menu.mhz.8Mhz.bootloader.high_fuses=0xDE
    BlueBoard.menu.mhz.8Mhz.build.f_cpu=8000000L 
    BlueBoard.menu.mhz.8Mhz.upload.speed=38400
    BlueBoard.menu.mhz.8Mhz.bootloader.file=myoptiboot/optiboot_atmega328_08M_038400_D8.hex
    

  • Hardware Contributor

    @alexsh1

    Here is my extract for this type:

    32PinBoard.name=atmega328p based - 32 pin TQFP
    
    32PinBoard.upload.tool=arduino:avrdude
    32PinBoard.upload.protocol=arduino
    32PinBoard.upload.maximum_size=32256
    32PinBoard.upload.maximum_data_size=2048
    
    32PinBoard.bootloader.tool=arduino:avrdude
    
    32PinBoard.bootloader.unlock_bits=0x3F
    32PinBoard.bootloader.lock_bits=0x0F
    
    
    32PinBoard.build.core=arduino:arduino
    32PinBoard.build.mcu=atmega328p
    
    32PinBoard.build.board=AVR_GERTSANDERS32PinBoard
    32PinBoard.build.variant=32PinBoard
    
    32PinBoard.menu.bod.4v3=4V3
    32PinBoard.menu.bod.4v3.bootloader.extended_fuses=0x04
    32PinBoard.menu.bod.2v7=2V7
    32PinBoard.menu.bod.2v7.bootloader.extended_fuses=0x05
    32PinBoard.menu.bod.1v8=1V8
    32PinBoard.menu.bod.1v8.bootloader.extended_fuses=0x06
    32PinBoard.menu.bod.off=Disabled
    32PinBoard.menu.bod.off.bootloader.extended_fuses=0x07
    32PinBoard.menu.mhz.8Mi-38K4-D8= 8Mhz - internal - 38K4 - D8
    32PinBoard.menu.mhz.8Mi-38K4-D8.bootloader.low_fuses=0xE2
    32PinBoard.menu.mhz.8Mi-38K4-D8.bootloader.high_fuses=0xDE
    32PinBoard.menu.mhz.8Mi-38K4-D8.build.f_cpu=8000000L 
    32PinBoard.menu.mhz.8Mi-38K4-D8.upload.speed=38400
    32PinBoard.menu.mhz.8Mi-38K4-D8.bootloader.file=myoptiboot/optiboot_atmega328_08M_038400_D8.hex
    


  • @GertSanders OK, the issue is in pins_arduino.h in 32PinBoard folder. The standard file is just not good. I'll have to find the right one for tqfp chip.

    EDIT: copied the "eightanaloginputs" variant in the variant folder, but still can only upload the first sketch after the bootloader, all other uploads are giving me "avrdude: stk500_getsync() attempt x of 10: not in sync:"



  • @GertSanders Gert, what pins_arduino.h are you using for this board please? Can you post it here?


  • Hardware Contributor

    @alexsh1

    Here is the pins_arduino.h file for the 32pin TQFP package

    0_1465854245099_pins_arduino.h


  • Hardware Contributor

    @alexsh1

    And here is a ZIP file with my complete atmega328p definitions

    0_1465854396475_atmega328p.zip



  • @GertSanders Many thanks for your help. This is probably my bad luck, but I have mixed up C1 and R1 mounting them vertically (not horizontally). What a stupid mistake really given that I have checked it a few times. Anyway, now everything is working.

    FYG, I looked at your pins_arduino.h - this is a standard one and it is not correct. I corrected the following entries:

    static const uint8_t SS   = 14;
    static const uint8_t MOSI = 15;
    static const uint8_t MISO = 16;
    static const uint8_t SCK  = 17;
    
    static const uint8_t SDA = 27;
    static const uint8_t SCL = 28;
    #define LED_BUILTIN 8
    
    static const uint8_t A0 = 23;
    static const uint8_t A1 = 24;
    static const uint8_t A2 = 25;
    static const uint8_t A3 = 26;
    static const uint8_t A4 = 27;
    static const uint8_t A5 = 28;
    static const uint8_t A6 = 19;
    static const uint8_t A7 = 22;
    

  • Hardware Contributor

    @alexsh1
    OK, I will check also on my side 🙂 Thanks for the feedback.



  • @GertSanders No worries! And signing works flawlessly on this node as well with ATSHA204A by the way 🙂



  • 0_1466010177286_image.jpeg


  • Hardware Contributor

    @alexsh1
    Double plus good !
    As I have no signing capability on my raspberry-turned-gateway I'm glad the hard work to simplify signing was done so well by @tbowmo and @Anticimex. Even without testing it I could assume it would work.


  • Contest Winner

    @GertSanders You are welcome 🙂 Btw, if you just patch in support to generate random data for a nonce, you can use the soft signing backend on rPi.


  • Hardware Contributor

    @Anticimex
    Well that sounds simple, but I'm more a hardware contributer, this is beyond my capabilities :-), especially in unix arena. I manage software developers for a living, so I know how much I do not know.



  • Hello guys,

    I am about to solder first PCB of this version. Just to be 100% sure, regarding C4 - what is the best value to use 1uF or 10uF, because I can see we can choose.

    Regards,
    Maciek


  • Hardware Contributor

    @macieiks

    Better to use 10uF. The schematic needs to be updated (still shows 1uF, I use 10uF now).



  • @GertSanders

    Thank you for the update,
    Last part what I am missing is battery holder. I was trying to search it in many stores located in my country however I was not able to get it. Is there any internet shop when I can buy online? I have one workaround to soldier different CR battery holder and connect via wires.



  • @macieiks I bought the battery holder on http://www.ebay.co.uk/


  • Hero Member

    @alexsh1 The link directs me to ebay home page... (possibly a country issue) can you give the name of the item so I can search?





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