@echo off
setlocal

set STLINK=C:\Program Files (x86)\STMicroelectronics\STM32 ST-LINK Utility\ST-LINK Utility\ST-LINK_CLI.exe
if not exist "%STLINK%" (
    echo RESET_FAIL: ST-LINK_CLI not found at "%STLINK%"
    exit /b 2
)

if "%~1"=="" goto :reset_run
if /i "%~1"=="hard" goto :hard
if /i "%~1"=="halt" goto :halt
if /i "%~1"=="run" goto :run
if /i "%~1"=="list" goto :list
if /i "%~1"=="flash" goto :flash
goto :help

:reset_run
echo RESET: system reset and run (SWD)
"%STLINK%" -c SWD -Rst -Run -Q
exit /b %ERRORLEVEL%

:hard
echo RESET: nRST pulse 100ms (falls back to system reset if CLI lacks RM=)
"%STLINK%" -c SWD RM=Hrst -HardRst PULSE=100 -Q
if not errorlevel 1 exit /b 0
echo RESET_NOTE: this ST-LINK_CLI rejects RM= (v3.5.0 known gap), falling back to system reset
"%STLINK%" -c SWD -Rst -Run -Q
exit /b %ERRORLEVEL%

:halt
echo RESET: system reset and halt core (debug; resume with 'run')
"%STLINK%" -c SWD -Rst -Halt
exit /b %ERRORLEVEL%

:run
echo RUN: resume halted core
"%STLINK%" -c SWD -Run
exit /b %ERRORLEVEL%

:list
"%STLINK%" -List
exit /b %ERRORLEVEL%

:flash
if "%~2"=="" set "FW=%~dp0STM32F407-Demo\STM32F407-Demo.hex"
if not "%~2"=="" set "FW=%~2"
if not exist "%FW%" (
    echo FLASH_FAIL: firmware not found "%FW%"
    exit /b 2
)
echo FLASH: program "%FW%" then reset and run
"%STLINK%" -c SWD -P "%FW%" -Rst -Run -Q
exit /b %ERRORLEVEL%

:help
echo Usage: reset.bat [command]
echo.
echo   (none)    System reset and run (restart board via SWD)
echo   hard      nRST pulse 100ms; auto-falls back to system reset if CLI lacks RM=
echo   halt      System reset and halt core (in-session read; auto-resumes after disconnect)
echo   run       Resume a halted core
echo   list      List connected ST-LINK probes
echo   flash [F] Program F (default: latest build hex) then reset and run
echo.
echo Exit codes: 0=OK  1=probe or target error  2=usage or tool missing

endlocal