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			* Furi: smaller crash routine * Furi: small fixes * Furi: cleanup check routines, more assembly code, force inline of __furi_halt_mcu * SubGhz: cleanup residual line mess * Documentation * Dap-link: fix help * Furi: replace __furi_halt_mcu with HALT_MCU macros * Furi: disable IRQ earlier in crash handler * Furi: properly handle masked mode when detecting ISR * Ble: allow 0 length feed in rpc_session_feed * Format sources * Furi: better crash logic explanation. * Furi: some grammar in check.h Co-authored-by: SG <who.just.the.doctor@gmail.com>
Flipper Zero as CMSIS DAP/DAP Link
Flipper Zero as a Free-DAP based SWD\JTAG debugger. Free-DAP is a free and open source firmware implementation of the CMSIS-DAP debugger.
Protocols
SWD, JTAG , CMSIS-DAP v1 (18 KiB/s), CMSIS-DAP v2 (46 KiB/s), VCP (USB-UART).
WinUSB for driverless installation for Windows 8 and above.
Usage
VSCode + Cortex-Debug
Set "device": "cmsis-dap"
BluePill configuration example
{
  "name": "Attach (DAP)",
  "cwd": "${workspaceFolder}",
  "executable": "./build/firmware.elf",
  "request": "attach",
  "type": "cortex-debug",
  "servertype": "openocd",
  "device": "cmsis-dap",
  "configFiles": [
      "interface/cmsis-dap.cfg",
      "target/stm32f1x.cfg",
  ],
},
Flipper Zero configuration example
{
  "name": "Attach (DAP)",
  "cwd": "${workspaceFolder}",
  "executable": "./build/latest/firmware.elf",
  "request": "attach",
  "type": "cortex-debug",
  "servertype": "openocd",
  "device": "cmsis-dap",
  "svdFile": "./debug/STM32WB55_CM4.svd",
  "rtos": "FreeRTOS",
  "configFiles": [
      "interface/cmsis-dap.cfg",
      "./debug/stm32wbx.cfg",
  ],
  "postAttachCommands": [
      "source debug/flipperapps.py",
  ],
},
OpenOCD
Use interface/cmsis-dap.cfg. You will need OpenOCD v0.11.0.
Additional commands:
- cmsis_dap_backend hidfor CMSIS-DAP v1 protocol.
- cmsis_dap_backend usb_bulkfor CMSIS-DAP v2 protocol.
- cmsis_dap_serial DAP_Oyevoxouse DAP-Link running on Flipper named- Oyevoxo.
- cmsis-dap cmd 81- reboot connected DAP-Link.
Flash BluePill
openocd -f interface/cmsis-dap.cfg -f target/stm32f1x.cfg -c init -c "program build/firmware.bin reset exit 0x8000000"
Flash Flipper Zero using DAP v2 protocol
openocd -f interface/cmsis-dap.cfg -c "cmsis_dap_backend usb_bulk" -f debug/stm32wbx.cfg -c init -c "program build/latest/firmware.bin reset exit 0x8000000"
Reboot connected DAP-Link on Flipper named Oyevoxo
openocd -f interface/cmsis-dap.cfg -c "cmsis_dap_serial DAP_Oyevoxo" -c "transport select swd" -c "adapter speed 4000000" -c init -c "cmsis-dap cmd 81" -c "exit"
PlatformIO
Use debug_tool = cmsis-dap and upload_protocol = cmsis-dap. Documentation. Remember that Windows 8 and above do not require drivers.
BluePill platformio.ini example
[env:bluepill_f103c8]
platform = ststm32
board = bluepill_f103c8
debug_tool = cmsis-dap
upload_protocol = cmsis-dap