Similar to TFLite for Microcontrollers on RT686, I'm trying to run tflite micro examples on an RT600 board which I've built for the Xtensa HiFi 4 on the board.
In case it helps someone else, the procedure for building seems relatively straightforward, assuming MCUXpresso and Xtensa tools are setup correctly:
# DSP toolchain export XTENSA_CORE=nxp_rt600_RI2019_newlib export XTENSA_SYSTEM=/opt/xtensa/XtDevTools/install/builds/RI-2019.1-linux/$XTENSA_CORE/config export XTENSA_TOOLS_ROOT=/opt/xtensa/XtDevTools/install/tools/RI-2019.1-linux/XtensaTools # MCU toolchain export MCUXPRESSO_TOOLCHAIN=/usr/local/mcuxpressoide-11.1.1_3241/ide/plugins/com.nxp.mcuxpresso.tools.linux_18.104.22.168001081728/tools # Export paths PATH=$MCUXPRESSO_TOOLCHAIN/bin:$PATH PATH=$XTENSA_TOOLS_ROOT/bin:$PATH # Clone and build git clone https://github.com/tensorflow/tensorflow cd tensorflow make -f tensorflow/lite/micro/tools/make/Makefile clean test_keyword_benchmark TARGET=xtensa_hifi TARGET_ARCH=hifi4 TAGS=xtensa_hifi
I used this to build two examples and one benchmark on the master branch @ 0f63bc53 and obtained these binaries:
and tried flashing them using the GUI flash tool in MCUXpresso (through SEGGER J-Link probe) but I get this error towards the end of the process:
... Downloading file [/home/user/Workspace/tensorflow/tensorflow/lite/micro/tools/make/gen/xtensa_hifi_hifi4/bin/keyword_benchmark.hex]... Writing target memory failed. Script processing completed. ****** Error: Could not start CPU core. (ErrorCode: -2) Unable to perform operation! Command failed with exit code 1
Please see full logs attached, including the binaries and deployment scripts generated by the GUI flash tool.