Avatar for George


Member since Jul 2018 • Last active Aug 2018
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  • in Porting to new Devices
    Avatar for George

    Where should I put the jshPinSetValue(LED1_PININDEX,1); line to make it compiled into the firmware?

  • in Porting to new Devices
    Avatar for George

    I searched the repo with "LQFP48" to find similar boards and some clues. I found that Olmexino and Maple mini are the only boards with this package and they both have a special get_pins function. Maybe this solves my problem?

    def get_pins():
      pins = pinutils.scan_pin_file([], 'stm32f103xb.csv', 6, 10, 11)
      # Olimexino/Maple pins have stupid names
      pinmapping = {
        'D0' :'PA3',
        'D1' :'PA2',
        'D2' :'PA0',
        'D3' :'PA1',
        'D4' :'PB5',
        'D5' :'PB6',
        'D6' :'PA8',
        'D7' :'PA9',
        'D8' :'PA10',
        'D9' :'PB7',
        'D15':'PC0', # shared with A0-A15
        'D38':'PC9', # for button
        'D39':'PC12', # for USB disc
        'D40':'PA11', # for USB dm
        'D41':'PA12', # for USB dp
      newpins = []
      for newname in pinmapping:
    #    print newname
        pin = pinutils.findpin(pins, pinmapping[newname], True)
        pin["name"] = "P"+newname
        pin["sortingname"] = newname[0] + newname[1:].rjust(2,'0')
      # Because 'pinmapping' is NOT stored in order!!!
      newpins = sorted(newpins, key=lambda pin: pin["sortingname"])
    #  print(json.dumps(newpins, sort_keys=True, indent=2))
      return newpins

    I pasted it to get__pins function in my file, but now I get this error on build. How can i get more info on what happened?

    Generating platform configs
    Generating pin info
    make: *** [gen/platform_config.h] Error 1
  • in Porting to new Devices
    Avatar for George

    Hi, Gordon. I updated my previous answer with a link to a full .c file.

    I tried adding PIN_NAMES_DIRECT to my config like this

       'makefile' : [

    but it didn't change anything in jspininfo.h, jspininfo.c, platform_config.h after the build. What does this command even affect?

    Here is my gen/platform_config.h file just for sure.

  • in Porting to new Devices
    Avatar for George

    Here is my gen/jspininfo.c file https://gist.github.com/Fxlr8/33115ccc6c­6ba4e48aceec74713bebcc

    is this correct if hardware pin numbers are 30 and 31?

    Upd: I think this information from jspininfo.h is essential for the answer (i removed define at the beginning of every line because it messed up with the markdown)

  • in Porting to new Devices
    Avatar for George

    Unfortunately, I made the diagram and printed the PCB before I heard about your project. I replaced that chip with STM32F100CBT68 with 128kb of flash. This is the biggest chip in the LQFP48 package and I can't go bigger. But 128 should be enough. By the way, is it possible to store some code on 128kb chip?

  • in Porting to new Devices
    Avatar for George

    I added this to the info block

     'default_console' : "EV_SERIAL1",
     'default_console_tx' : "A9",
     'default_console_rx' : "A10",

    And this to the Makefile list


    With no effect, unfortunately.

    By the way, I checked the CSV table stm32f103xb.csv from which it scans the pins from

    And they look correct.

    I found something interesting. This 6, 10, 11 offset numbers in get__pins function. I never changed them, I just copied them from VLDISCOVERY file. Maybe they need to be changed as well because my chip package is different? But i cant figure out how they work

    def get_pins():
          pins = pinutils.scan_pin_file([], 'stm32f103xb.csv', 6, 10, 11)
          return pinutils.only_from_package(pinutils.fill­_gaps_in_pin_list(pins), chip["package"])
  • in Porting to new Devices
    Avatar for George

    I did what you said. The LED connected between A9 and 3.3V is not flashing. I made a second board from fresh components just in case I broke something but had the same effect. Looks like the chip is not sending anything to this UART. Maybe there is a pin configuration issue? Maybe because the default package for STM32VLDISCOVERY is LQFP64 and mine is LQFP48 (i changed it in board's config file) there is some pin mismatch? Or some connections on my board make the chip think that it is connected via USB, so it sends nothing to A9, A10 pins?

  • in Porting to new Devices
    Avatar for George

    Thanks for a quick response and your awesome project, @Gordon.

    I set the LED1 to A13. My devices block looks like this

    devices = {
      'OSC' : { 'pin_1' :  'D0',
                'pin_2' : 'D1' },
      'LED1' : { 'pin' : 'A13' },

    Indeed, the LED makes one really short flash when the board is powered on. Looks like Espruino is there, but minicom connection to UART is still silent. As far as I know, if the bit rate is mismatched you should get at least some weird ASCII symbols instead of data. But I get nothing. I reduced the number of variables to 400 just to be sure. Also, I added this two lines

     'default_console_tx' : "A9",
     'default_console_rx' : "A10",

    Not sure if they really change something for the build. I copied them from the original Espruino board config.

    400 variables are still more than enough for me. I need to blink some LEDs and control some transistors. By the way, can my chip store some code at all? I really like the idea of programming a chip with js, I can't wait to make it work)

  • in Porting to new Devices
    Avatar for George

    Hi, I am trying to install Espruino on stm32f100 chip and use it in my DIY nixie clock project. I found that STM32VLDISCOVERY board is based on the exact same chip. I used it's firmware and flashed it on my chip using JTAG programmer (made from a raspberry pi + openOCD). The programmer says that the firmware is flashed successfully, but when I connect to the chip's uart with minicom -o -b 9600 -D /dev/ttyAMA0 i get nothing. There is no Espruino console.

    Here is how my wiring looks like:

    Here is what I had tried:
    1) Checked my wiring (I tried it in multiple ways. I also tried to connect to my MacBook using USB-TTL dongle, I can see the dongle from Espruino ide, but it cannot connect to the chip)
    2) I followed this forum post
    3) I made a custom build based on STM32VLDISCOVERY and changed the package to LQFP48 to match my chip

    I also found some weird behavior.
    In boards/STM32VLDISCOVERY.py in devices section, there are JTAG pins defined

    'JTAG' : {
            'pin_MS' : 'A13',
            'pin_CK' : 'A14',
            'pin_DI' : 'A15'

    But after flashing the programmer can't connect to the chip again without "connect under reset" procedure, which means that this pins have been overwritten.

    Any clues will be appreciated