Writing Your Own Flash/Debug Tools & Automation
Build reproducible, CI-friendly flash + verify + reset automation for the STM32L4R5 from OpenOCD Tcl, GDB batch scripts, Python (pyOCD / pylink), and the on-chip USART/USB-DFU bootloader.
arm-none-eabi-gdb — Embedded Debugging Mastery
A field manual for driving the ARM cross-GDB on an STM32L4R5 (Cortex-M4F): connect to a GDB server, flash, set hardware breakpoints and watchpoints, poke peripheral registers by raw address, and dissect a HardFault from the SCB fault registers.
SEGGER J-Link — Commander & GDBServer CLI
Flash, run and inspect an STM32L4R5ZI from the terminal — JLinkExe, JLinkGDBServer + arm-none-eabi-gdb, SEGGER RTT, and scripted batch flashing.
OpenOCD + GDB — Flash & Debug STM32 from the CLI
Program and step-debug an STM32L4R5 over SWD with nothing but openocd, arm-none-eabi-gdb, and an ST-Link — no IDE required.
probe-rs — Modern CLI Flash/Debug (RTT, cargo-embed)
One host-side toolchain that replaces OpenOCD + GDB + ST-LINK Utility: flash an ELF, stream RTT/defmt logs, and catch panics on a Cortex-M4F — over ST-Link, J-Link, or CMSIS-DAP.
ARM Semihosting — printf via the Debugger
Get stdout on an STM32L4R5 with zero UART wiring — BKPT-based host syscalls, newlib rdimon, and OpenOCD, from first build to first character.
stlink Tools — st-flash / st-info / st-util CLI
The open-source stlink toolset (stlink-org, formerly texane) for probing, flashing, dumping, GDB-debugging and SWO-tracing an STM32L4R5 over SWD — with exact commands, address maps and a copy-pasteable firmware example.
SWD, SWO Trace & RTT — printf-Debug over the Probe
Get real, non-intrusive logging out of an STM32L4R5 over the debug probe — SWD wiring, ITM/SWO stimulus printf, SEGGER RTT, and the exact host-side CLI capture commands.