MCUXpresso SDK Documentation

Version: 25.12.00 25.12.00-pvw2 25.12.00-pvw1 25.09.00 25.09.00-pvw2 latest

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Link DSP Profiles

The Xtensa Software Tools use the linker support packages (LSPs) to link a HiFi4 DSP application for the RT700. An LSP includes both a system memory map and a collection of libraries to include into the final binary. The LSPs are provided in the MCUXpresso SDK and are available at: <SDK_ROOT>/devices/MIMXRT685S/xtensa/.

DSP sample applications are configured to link against one of these custom LSPs. By default, Debug targets are linked against the gdbio LSP intended for use with an attached debugger and captures I/O requests (printf) through gdb. The Release target links against the min-rt LSP, which includes minimal runtime support.

To change the LSP used by a project target in the Xplorer IDE, use the Linker tab in the project Build Properties dialog box.

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The MCUXpresso SDK ships with other standard LSPs for RT700. For more information on LSPs and creating a custom memory map using Xtensa software tools, see the Cadence Linker Support Packages (LSPs) Reference Manual.