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Nitrogen is a 96Boards compliant IoT Edition board and has support for Zephyr RTOS. This board is based on the Arm Cortex M7 core which will enable us to test its support in OpenOCD and also allow us to debug CMSIS-DAP support with its on-chip USB to JTAG support. Click here for instructions on how to set up a Nitrogen board for JTAG debugging with OpenOCD. 

Please click here to set up the hardware/software environment for OpenOCD based JTAG debugging with Nitrogen board. Now that Once the hardware and software setup is complete we can run x86_64 host GDB and attach it to the running OpenOCD process. As a test set a breakpoint at openocd-src/src/target/cortex_m.c:cortex_m_resume and hit resume. This breakpoint will hit once you hit resume on arm-noneabi-gdb which is connected to OpenOCD for debugging a blinky demo running on Nitrogen board.

Raspberry Pi

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(Arm v7/AArch64/AArch32): 

Raspberry Pi 3 B+ is a readily available reasonably priced board with Cortex-A53 based SoC JTAG debugging capability available through its GPIO interface. It also have a very good community support which makes it an ideal choice to test OpenOCD Arm v8 support in both AArch64 and AArch32 modes. Click here for instructions on how to set up a Raspberry Pi 3 B+ for JTAG debugging with OpenOCD.

Raspberry Pi 2 B (Armv7 Cortex A): 

Raspberry Pi 2 B is a readily available reasonably priced board with Cortex A7 based SoC which makes it an ideal choice to test OpenOCD Arm v7 support. for testing and debugging OpenOCD support for Arm 32-bit support and AArch64/AArch32 support using Raspberry Pi 2 B and Raspberry Pi 3 B respectively. Click here for instructions on how to set up a Raspberry Pi 2 B board for JTAG debugging with OpenOCD.

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