• Electronics
• STM32F3DISCOVERY

Electronics/STM32F3DISCOVERY

• 2024-11 Looks nice - but the usb is older USB mini-USB

  • Got mini USB cable from old MP3 player

Rust - from embedded rust online book

• To enable simple build and upload with

  cargo run

• .cargo/config.toml

  ...
  [target.'cfg(all(target_arch = "arm", target_os = "none"))']
  # uncomment ONE of these three option to make `cargo run` start a GDB session
  # which option to pick depends on your system
  runner = "arm-none-eabi-gdb -q -x openocd.gdb"
  ...

• openocd.gdb

  target extended-remote :3333
  
  # print demangled symbols
  set print asm-demangle on
  
  # set backtrace limit to not have infinite backtrace loops
  set backtrace limit 32
  
  # detect unhandled exceptions, hard faults and panics
  break DefaultHandler
  break HardFault
  break rust_begin_unwind
  # # run the next few lines so the panic message is printed immediately
  # # the number needs to be adjusted for your panic handler
  # commands $bpnum
  # next 4
  # end
  
  # *try* to stop at the user entry point (it might be gone due to inlining)
  break main
  
  monitor arm semihosting enable
  
  # # send captured ITM to the file itm.fifo
  # # (the microcontroller SWO pin must be connected to the programmer SWO pin)
  # # 8000000 must match the core clock frequency
  # monitor tpiu config internal itm.txt uart off 8000000
  
  # # OR: make the microcontroller SWO pin output compatible with UART (8N1)
  # # 8000000 must match the core clock frequency
  # # 2000000 is the frequency of the SWO pin
  # monitor tpiu config external uart off 8000000 2000000
  
  # # enable ITM port 0
  # monitor itm port 0 on
  
  load
  
  # start the process but immediately halt the processor
  stepi