STM32 pills

• My x2 black-pill-I come from WeActTogether as seen from USB-IDs in the logs when connectin them.
• Registered in STM32-base boards
• Board
  • Name: WeAct Black Pill V1.2
  • Part: Unknown
  • Brand: WeAct Studio
  • Origin: China
• Microcontroller
  • Part: STM32F401CCU6
  • Manufacturer: ST-Microelectronics
  • Core: Arm Cortex-M4
  • Max. Clock Speed: 84MHz
  • Package: UFQFPN 48 pins
• Internal memories
  • FLASH: 256KiB
  • SRAM: 64KiB
• Oscillators:
  • HSI: 16MHz
  • LSI: 32kHz
  • HSE: 25MHz
  • LSE: 32.768kHz
• Power:
  • Sources:
  • Any: +3.3V pin (+3.3V)
  • Any: +5V pin (+5V)
  • USB: connector (+5V)
  • VDDA pin: No
  • VSSA pin: No
  • VREF- pin: No
  • VREF+ pin: No
  • Backup battery: Pin
• Regulator:
  • Manufacturer: Diodes Incorporated
  • Part: AP7343 (6T)
  • Package: X2-DFN1010-4 4 pins
  • Input: +3.52V to +5.25V
  • Output: +3.3V @ 300mA
  • Datasheet: AP7343.pdf
• PCB:
  • Color: Black
  • Size (w x l): 20.78mm x 52.81mm
  • Mounting: Breadboard

27 May 2022

• effort: 0.5 (ACC 2022MAY)

• Blue vs Black pills with many resources

• Black-magic fw --> blue-pill FIT FOR STM32F103xxx ONLY (NOT FOR STM32F4(0 & 1)1, aka black-pill I & II)

• blue-pill --> Black-magic probe DOES NOT WORK

• Flashed BlackMagic following this guide DOES NOT WORK

  $ dfu-util -d 0483:df11 -a 0 -s 0x08000000:leave -D ~/tmp/t/blackmagic_dfu-swlink.bin
  dfu-util 0.11
  
  Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
  Copyright 2010-2021 Tormod Volden and Stefan Schmidt
  This program is Free Software and has ABSOLUTELY NO WARRANTY
  Please report bugs to http://sourceforge.net/p/dfu-util/tickets/
  
  dfu-util: Warning: Invalid DFU suffix signature
  dfu-util: A valid DFU suffix will be required in a future dfu-util release
  Opening DFU capable USB device...
  Device ID 0483:df11
  Device DFU version 011a
  Claiming USB DFU Interface...
  Setting Alternate Interface #0 ...
  Determining device status...
  DFU state(10) = dfuERROR, status(10) = Device's firmware is corrupt. It cannot return to run-time (non-DFU) operations
  Clearing status
  Determining device status...
  DFU state(2) = dfuIDLE, status(0) = No error condition is present
  DFU mode device DFU version 011a
  Device returned transfer size 2048
  DfuSe interface name: "Internal Flash  "
  Downloading element to address = 0x08000000, size = 7280
  Erase   	[=========================] 100%         7280 bytes
  Erase    done.
  Download	[=========================] 100%         7280 bytes
  Download done.
  File downloaded successfully
  Submitting leave request...
  Transitioning to dfuMANIFEST state
  

28 May 2022

• effort: 0.2 (ACC 2022MAY)
• Locate BlakMagic --> BlackPill guide!!!
  • apply BlakMagic --> BlackPill guide
  • responded to issue#1 begging for MRs to upstream
• install ARM gcc/gdb toolchain
  • [-] sudo apt install gcc-arm-none-eabi gdb-arm-none-eabi DOES NOT FETCH ANY GDB!!
• download them from https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/downloads both are missing depends on libpython-3.6
  • gcc-arm-11.2-2022.02-x86_64-arm-none-linux-gnueabihf.tgz
  • install Python3.6 from deadsnakes
• build them from sources

Jun 1 2022

• effort: 1 (ACC 2022JUN)
• OpenOCD --> BlackMagic
  • someone had attempted this and was promising (eg debug RTOS threads)...But need re-compile both MBP & OpenOCD.
    • Have to build a special OpenOCD instead of cloning original repo BUILD FAILS reported as #3
    • probably changes already incorporated in blackmagic
    • file issue#2 begging for MRs to upstream
    • file issue#570 beg also on announce issue
• GDB --> BlackMagic
  • follow Usefull GDB commands
• PlatformIO --> BlackMagic
  • board: STM32F401CC
  • debug pre-built ELF without building+uploadin
• CubIDE -> BlackMagic
• How to re-install original WeCanAct BlackPill-1 firmware?
• Alternative BluePill firmware (discovered from reddit, abandoned since 2016): Versaloon Programmer (VSProg)
• OpenOCD+BMP use-case?

Jun 2 2022

• effort: 0.4 (ACC 2022JUN)
• WeActTC/MiniSTM32F4x1#37 asked source-code of WeAct fw
• try to dump orginal's black-pill fw as training
• Bluepill debug session post

Jun 3 2022

• work on OpenOCD + Blackpill

Jun 4 2022

• work on PlatfomIO + Blackpill