Embedded module TQMa8MPxL - YOCTO Linux BSP documentation

Setup M7 Core

Toolchain Installation

• Download installer from https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads
• For the TQMa8MPXL you need the gcc-arm-none-eabi-9-2019-q4-major-x86_64-linux.tar.bz2
• Unpack the tarball to the install directory, like this: cd ${install_dir} && tar xjf gcc-arm-none-eabi-_version_-linux.tar.bz2

Setup J-LINK GDB Server

• Download J-Link Connect GDB Server from https://www.segger.com/products/debug-probes/j-link/tools/j-link-gdb-server/about-j-link-gdb-server/
• Install with dpkg-i JLink_Linux_V752d_x86_64.deb
• Connect Segger J-LINK with JTAG Interface on Mainboard (X22)
• Boot the STKa8MPxl in U-Boot
• Start the J-Link GDB Server with JLinkGDBServer -if JTAG -device MIMX8ML8_M7

Build HELLO WORLD Application

• Open a second terminal
• Install the following packages on your host sudo apt install libncurses5 cmake
• Download MCU Espresso SDK from TQ GitHub Repository
• Change System Variables to Toolchain SDK

export ARMGCC_DIR=${install_dir}/gcc-arm-none-eabi-9-2019-q4-major
export PATH=$PATH:${install_dir}/gcc-arm-none-eabi-9-2019-q4-major/bin

• Change in your MCU Espresso SDK directoy

cd ${MCU_Espresso_SDK}/boards/tqma8mpxl-mba8mpxl/demo_apps/hello_world/armgcc

• if necessary make the script build_debug.sh executable

chmod +x build_debug.sh

• run the script to build the firmware

./build_debug.sh

Run HELLO WORLD Application

• Open UART_3 in your serial console
• cd ${MCU_Espresso_SDK}/boards/tqma8mxnl-mba8mx/demo_apps/hello_world/armgcc/debug
• arm-none-eabi-gdb hello_world.elf
• target remote localhost:2331
• monitor reset
• monitor halt
• load
• monitor go
• In your console TQ-Systems GmbH TQMa8MPxL-MBa8MPxL hello world. should be seen