Hello there,
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/$XTENSA_CORE/config
export XTENSA_TOOLS_ROOT=/opt/xtensa/XtDevTools/install/tools/RI-2019.1-linux/XtensaTools
# MCU toolchain
export MCUXPRESSO_TOOLCHAIN=/usr/local/mcuxpressoide-11.1.1_3241/ide/plugins/com.nxp.mcuxpresso.tools.linux_11.1.0.202001081728/tools
# Export paths
PATH=$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.
Kind regards
