pkg/tflite-micro: add support and deprecate tensorflow-lite #17908

aabadie · 2022-04-08T09:05:51Z

Contribution description

This PR introduces the tflite-micro framework as a package to replace the actual tensorflow-lite package.
The main advantage of tflite-micro is that it's a subset of tensorflow, that only targets microcontrollers. tflite-micro is automatically synchronized with the upstream tensorflow lite repo.
As a result, it takes less time to fetch with git and also less space on disk.

The actual tensorflow-lite package is updated to 2.2.2 and deprecated by this PR but the test application, renamed tests/pkg_tflite-micro and slightly adapted, is still compatible with it (that's also why 2.2.2 is required).

To add support for tflite-micro, several things were needed:

add the ruy matrix multiplication library as a package
bump flatbuffer package to v2.0.0

Even if not strictly required, gemmlowp version was also updated.

Testing procedure

The tflite-micro port was tested on native, cortexm4 (nucleo-l4) and esp32. It doesn't work on riscv even if it builds fine.

native

$ BUILD_IN_DOCKER=1 make -C tests/pkg_tflite-micro flash test --no-print-directory 
Launching build container using image "riot/riotbuild:latest".
docker run --rm --tty --user $(id -u) -v '/usr/share/zoneinfo/Europe/Paris:/etc/localtime:ro' -v '/work/riot/RIOT:/data/riotbuild/riotbase:delegated' -v '/home/aabadie/.cargo/registry:/data/riotbuild/.cargo/registry:delegated' -v '/home/aabadie/.cargo/git:/data/riotbuild/.cargo/git:delegated' -e 'RIOTBASE=/data/riotbuild/riotbase' -e 'CCACHE_BASEDIR=/data/riotbuild/riotbase' -e 'BUILD_DIR=/data/riotbuild/riotbase/build' -e 'RIOTPROJECT=/data/riotbuild/riotbase' -e 'RIOTCPU=/data/riotbuild/riotbase/cpu' -e 'RIOTBOARD=/data/riotbuild/riotbase/boards' -e 'RIOTMAKE=/data/riotbuild/riotbase/makefiles'       -e 'DISABLE_MODULE=cortexm_fpu' -e 'DEFAULT_MODULE=test_utils_interactive_sync test_utils_print_stack_usage' -e 'FEATURES_REQUIRED=' -e 'FEATURES_BLACKLIST=' -e 'FEATURES_OPTIONAL=' -e 'USEMODULE=mnist' -e 'USEPKG=tflite-micro' -e 'KCONFIG_ADD_CONFIG='  -w '/data/riotbuild/riotbase/tests/pkg_tflite-micro/' 'riot/riotbuild:latest' make  'EXTERNAL_MODULE_DIRS=/data/riotbuild/riotbase/tests/pkg_tflite-micro/external_modules'   
Building application "tests_pkg_tflite-micro" for "native" with MCU "native".

"make" -C /data/riotbuild/riotbase/pkg/flatbuffers/ 
"make" -C /data/riotbuild/riotbase/pkg/gemmlowp/ 
"make" -C /data/riotbuild/riotbase/pkg/ruy/ 
"make" -C /data/riotbuild/riotbase/pkg/tflite-micro/ 
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/c -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-c.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/core/api -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-core-api.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels/internal -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels-internal.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels/internal/reference -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels-internal-reference.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro/kernels -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro-kernels.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro/memory_planner -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro-memory-planner.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/schema -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-schema.mk
"make" -C /data/riotbuild/riotbase/boards/common/init
"make" -C /data/riotbuild/riotbase/boards/native
"make" -C /data/riotbuild/riotbase/boards/native/drivers
"make" -C /data/riotbuild/riotbase/core
"make" -C /data/riotbuild/riotbase/core/lib
"make" -C /data/riotbuild/riotbase/cpu/native
"make" -C /data/riotbuild/riotbase/cpu/native/periph
"make" -C /data/riotbuild/riotbase/cpu/native/stdio_native
"make" -C /data/riotbuild/riotbase/drivers
"make" -C /data/riotbuild/riotbase/drivers/periph_common
"make" -C /data/riotbuild/riotbase/sys
"make" -C /data/riotbuild/riotbase/sys/auto_init
"make" -C /data/riotbuild/riotbase/sys/cpp11-compat
"make" -C /data/riotbuild/riotbase/sys/cpp_new_delete
"make" -C /data/riotbuild/riotbase/sys/div
"make" -C /data/riotbuild/riotbase/sys/frac
"make" -C /data/riotbuild/riotbase/sys/test_utils/interactive_sync
"make" -C /data/riotbuild/riotbase/sys/test_utils/print_stack_usage
"make" -C /data/riotbuild/riotbase/sys/timex
"make" -C /data/riotbuild/riotbase/sys/ztimer
"make" -C /data/riotbuild/riotbase/sys/ztimer64
"make" -C /data/riotbuild/riotbase/tests/pkg_tflite-micro/external_modules/mnist
   text	   data	    bss	    dec	    hex	filename
 531766	  91441	  59428	 682635	  a6a8b	/data/riotbuild/riotbase/tests/pkg_tflite-micro/bin/native/tests_pkg_tflite-micro.elf
r
/work/riot/RIOT/tests/pkg_tflite-micro/bin/native/tests_pkg_tflite-micro.elf /dev/ttyACM0 
RIOT native interrupts/signals initialized.
RIOT native board initialized.
RIOT native hardware initialization complete.

Help: Press s to start test, r to print it is ready
READY
s
START
main(): This is RIOT! (Version: 2022.04-devel-1111-ge56b5-pr/pkg/tflite-micro)
Digit prediction: 7

nucleo-l476rg

$ BUILD_IN_DOCKER=1 make BOARD=nucleo-l476rg -C tests/pkg_tflite-micro flash test --no-print-directory 
Launching build container using image "riot/riotbuild:latest".
docker run --rm --tty --user $(id -u) -v '/usr/share/zoneinfo/Europe/Paris:/etc/localtime:ro' -v '/work/riot/RIOT:/data/riotbuild/riotbase:delegated' -v '/home/aabadie/.cargo/registry:/data/riotbuild/.cargo/registry:delegated' -v '/home/aabadie/.cargo/git:/data/riotbuild/.cargo/git:delegated' -e 'RIOTBASE=/data/riotbuild/riotbase' -e 'CCACHE_BASEDIR=/data/riotbuild/riotbase' -e 'BUILD_DIR=/data/riotbuild/riotbase/build' -e 'RIOTPROJECT=/data/riotbuild/riotbase' -e 'RIOTCPU=/data/riotbuild/riotbase/cpu' -e 'RIOTBOARD=/data/riotbuild/riotbase/boards' -e 'RIOTMAKE=/data/riotbuild/riotbase/makefiles'      -e 'BOARD=nucleo-l476rg' -e 'DISABLE_MODULE=cortexm_fpu' -e 'DEFAULT_MODULE=test_utils_interactive_sync test_utils_print_stack_usage' -e 'FEATURES_REQUIRED=' -e 'FEATURES_BLACKLIST=' -e 'FEATURES_OPTIONAL=' -e 'USEMODULE=mnist' -e 'USEPKG=tflite-micro' -e 'KCONFIG_ADD_CONFIG='  -w '/data/riotbuild/riotbase/tests/pkg_tflite-micro/' 'riot/riotbuild:latest' make 'BOARD=nucleo-l476rg' 'EXTERNAL_MODULE_DIRS=/data/riotbuild/riotbase/tests/pkg_tflite-micro/external_modules'   
Building application "tests_pkg_tflite-micro" for "nucleo-l476rg" with MCU "stm32".

"make" -C /data/riotbuild/riotbase/pkg/flatbuffers/ 
"make" -C /data/riotbuild/riotbase/pkg/gemmlowp/ 
"make" -C /data/riotbuild/riotbase/pkg/ruy/ 
"make" -C /data/riotbuild/riotbase/pkg/tflite-micro/ 
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/c -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-c.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/core/api -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-core-api.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels/internal -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels-internal.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels/internal/reference -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels-internal-reference.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro/kernels -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro-kernels.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro/memory_planner -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro-memory-planner.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/schema -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-schema.mk
"make" -C /data/riotbuild/riotbase/boards/common/init
"make" -C /data/riotbuild/riotbase/boards/nucleo-l476rg
"make" -C /data/riotbuild/riotbase/boards/common/nucleo
"make" -C /data/riotbuild/riotbase/core
"make" -C /data/riotbuild/riotbase/core/lib
"make" -C /data/riotbuild/riotbase/cpu/stm32
"make" -C /data/riotbuild/riotbase/cpu/cortexm_common
"make" -C /data/riotbuild/riotbase/cpu/cortexm_common/periph
"make" -C /data/riotbuild/riotbase/cpu/stm32/periph
"make" -C /data/riotbuild/riotbase/cpu/stm32/stmclk
"make" -C /data/riotbuild/riotbase/cpu/stm32/vectors
"make" -C /data/riotbuild/riotbase/drivers
"make" -C /data/riotbuild/riotbase/drivers/periph_common
"make" -C /data/riotbuild/riotbase/sys
"make" -C /data/riotbuild/riotbase/sys/auto_init
"make" -C /data/riotbuild/riotbase/sys/cpp11-compat
"make" -C /data/riotbuild/riotbase/sys/cpp_new_delete
"make" -C /data/riotbuild/riotbase/sys/div
"make" -C /data/riotbuild/riotbase/sys/frac
"make" -C /data/riotbuild/riotbase/sys/isrpipe
"make" -C /data/riotbuild/riotbase/sys/malloc_thread_safe
"make" -C /data/riotbuild/riotbase/sys/newlib_syscalls_default
"make" -C /data/riotbuild/riotbase/sys/pm_layered
"make" -C /data/riotbuild/riotbase/sys/stdio_uart
"make" -C /data/riotbuild/riotbase/sys/test_utils/interactive_sync
"make" -C /data/riotbuild/riotbase/sys/test_utils/print_stack_usage
"make" -C /data/riotbuild/riotbase/sys/timex
"make" -C /data/riotbuild/riotbase/sys/tsrb
"make" -C /data/riotbuild/riotbase/sys/ztimer
"make" -C /data/riotbuild/riotbase/sys/ztimer64
"make" -C /data/riotbuild/riotbase/tests/pkg_tflite-micro/external_modules/mnist
   text	   data	    bss	    dec	    hex	filename
 267832	    632	  13600	 282064	  44dd0	/data/riotbuild/riotbase/tests/pkg_tflite-micro/bin/nucleo-l476rg/tests_pkg_tflite-micro.elf
/work/riot/RIOT/dist/tools/openocd/openocd.sh flash /work/riot/RIOT/tests/pkg_tflite-micro/bin/nucleo-l476rg/tests_pkg_tflite-micro.elf
### Flashing Target ###
Open On-Chip Debugger 0.11.0+dev-00551-gaad871805 (2022-01-06-14:44)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
hla_swd
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : DEPRECATED target event trace-config; use TPIU events {pre,post}-{enable,disable}
srst_only separate srst_nogate srst_open_drain connect_assert_srst

Info : clock speed 500 kHz
Info : STLINK V2J28M18 (API v2) VID:PID 0483:374B
Info : Target voltage: 3.244737
Info : stm32l4x.cpu: Cortex-M4 r0p1 processor detected
Info : stm32l4x.cpu: target has 6 breakpoints, 4 watchpoints
Info : starting gdb server for stm32l4x.cpu on 0
Info : Listening on port 36173 for gdb connections
    TargetName         Type       Endian TapName            State       
--  ------------------ ---------- ------ ------------------ ------------
 0* stm32l4x.cpu       hla_target little stm32l4x.cpu       reset

Info : Unable to match requested speed 500 kHz, using 480 kHz
Info : Unable to match requested speed 500 kHz, using 480 kHz
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x080006f4 msp: 0x20000200
Info : device idcode = 0x10076415 (STM32L47/L48xx - Rev 4 : 0x1007)
Info : RDP level 0 (0xAA)
Info : flash size = 1024kbytes
Info : flash mode : dual-bank
Warn : Adding extra erase range, 0x080418b0 .. 0x08041fff
auto erase enabled
wrote 268464 bytes from file /work/riot/RIOT/tests/pkg_tflite-micro/bin/nucleo-l476rg/tests_pkg_tflite-micro.elf in 11.516569s (22.765 KiB/s)

verified 268464 bytes in 7.812533s (33.558 KiB/s)

Info : Unable to match requested speed 500 kHz, using 480 kHz
Info : Unable to match requested speed 500 kHz, using 480 kHz
shutdown command invoked
Done flashing
r
/work/riot/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "115200" --no-reconnect --noprefix --no-repeat-command-on-empty-line 
Twisted not available, please install it if you want to use pyterm's JSON capabilities
Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
READY
s
START
main(): This is RIOT! (Version: 2022.04-devel-1111-ge56b5-pr/pkg/tflite-micro)
Digit prediction: 7

esp32-wroom-32

$ BUILD_IN_DOCKER=1 make BOARD=esp32-wroom-32 -C tests/pkg_tflite-micro flash test --no-print-directory 
Launching build container using image "riot/riotbuild:latest".
docker run --rm --tty --user $(id -u) -v '/usr/share/zoneinfo/Europe/Paris:/etc/localtime:ro' -v '/work/riot/RIOT:/data/riotbuild/riotbase:delegated' -v '/home/aabadie/.cargo/registry:/data/riotbuild/.cargo/registry:delegated' -v '/home/aabadie/.cargo/git:/data/riotbuild/.cargo/git:delegated' -e 'RIOTBASE=/data/riotbuild/riotbase' -e 'CCACHE_BASEDIR=/data/riotbuild/riotbase' -e 'BUILD_DIR=/data/riotbuild/riotbase/build' -e 'RIOTPROJECT=/data/riotbuild/riotbase' -e 'RIOTCPU=/data/riotbuild/riotbase/cpu' -e 'RIOTBOARD=/data/riotbuild/riotbase/boards' -e 'RIOTMAKE=/data/riotbuild/riotbase/makefiles'      -e 'BOARD=esp32-wroom-32' -e 'DISABLE_MODULE=cortexm_fpu' -e 'DEFAULT_MODULE=test_utils_interactive_sync test_utils_print_stack_usage' -e 'FEATURES_REQUIRED=' -e 'FEATURES_BLACKLIST=' -e 'FEATURES_OPTIONAL=' -e 'USEMODULE=mnist' -e 'USEPKG=tflite-micro' -e 'KCONFIG_ADD_CONFIG='  -w '/data/riotbuild/riotbase/tests/pkg_tflite-micro/' 'riot/riotbuild:latest' make 'BOARD=esp32-wroom-32' 'EXTERNAL_MODULE_DIRS=/data/riotbuild/riotbase/tests/pkg_tflite-micro/external_modules'   
Building application "tests_pkg_tflite-micro" for "esp32-wroom-32" with MCU "esp32".

"make" -C /data/riotbuild/riotbase/pkg/esp32_sdk/ 
"make" -C /data/riotbuild/riotbase/pkg/esp32_sdk_libs/ 
"make" -C /data/riotbuild/riotbase/pkg/flatbuffers/ 
"make" -C /data/riotbuild/riotbase/pkg/gemmlowp/ 
"make" -C /data/riotbuild/riotbase/pkg/ruy/ 
"make" -C /data/riotbuild/riotbase/pkg/tflite-micro/ 
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/c -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-c.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/core/api -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-core-api.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels/internal -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels-internal.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/kernels/internal/reference -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-kernels-internal-reference.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro/kernels -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro-kernels.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/micro/memory_planner -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-micro-memory-planner.mk
"make" -C /data/riotbuild/riotbase/build/pkg/tflite-micro/tensorflow/lite/schema -f /data/riotbuild/riotbase/pkg/tflite-micro/tflite-schema.mk
"make" -C /data/riotbuild/riotbase/boards/common/init
"make" -C /data/riotbuild/riotbase/boards/esp32-wroom-32
"make" -C /data/riotbuild/riotbase/boards/common/esp32
"make" -C /data/riotbuild/riotbase/core
"make" -C /data/riotbuild/riotbase/core/lib
"make" -C /data/riotbuild/riotbase/cpu/esp32
"make" -C /data/riotbuild/riotbase/cpu/esp32/freertos
"make" -C /data/riotbuild/riotbase/cpu/esp32/periph
"make" -C /data/riotbuild/riotbase/cpu/esp32/vendor
"make" -C /data/riotbuild/riotbase/cpu/esp32/vendor/esp-idf
"make" -C /data/riotbuild/riotbase/cpu/esp32/vendor/esp-idf/driver
"make" -C /data/riotbuild/riotbase/cpu/esp32/vendor/esp-idf/esp32
"make" -C /data/riotbuild/riotbase/cpu/esp32/vendor/esp-idf/soc
"make" -C /data/riotbuild/riotbase/cpu/esp32/vendor/esp-idf/spi_flash
"make" -C /data/riotbuild/riotbase/cpu/esp_common
"make" -C /data/riotbuild/riotbase/cpu/esp_common/freertos
"make" -C /data/riotbuild/riotbase/cpu/esp_common/periph
"make" -C /data/riotbuild/riotbase/cpu/esp_common/vendor
"make" -C /data/riotbuild/riotbase/cpu/esp_common/vendor/xtensa
"make" -C /data/riotbuild/riotbase/drivers
"make" -C /data/riotbuild/riotbase/drivers/periph_common
"make" -C /data/riotbuild/riotbase/sys
"make" -C /data/riotbuild/riotbase/sys/auto_init
"make" -C /data/riotbuild/riotbase/sys/cpp11-compat
"make" -C /data/riotbuild/riotbase/sys/cpp_new_delete
"make" -C /data/riotbuild/riotbase/sys/div
"make" -C /data/riotbuild/riotbase/sys/frac
"make" -C /data/riotbuild/riotbase/sys/isrpipe
"make" -C /data/riotbuild/riotbase/sys/log
"make" -C /data/riotbuild/riotbase/sys/luid
"make" -C /data/riotbuild/riotbase/sys/newlib_syscalls_default
"make" -C /data/riotbuild/riotbase/sys/pm_layered
"make" -C /data/riotbuild/riotbase/sys/posix/pthread
"make" -C /data/riotbuild/riotbase/sys/random
"make" -C /data/riotbuild/riotbase/sys/stdio_uart
"make" -C /data/riotbuild/riotbase/sys/test_utils/interactive_sync
"make" -C /data/riotbuild/riotbase/sys/test_utils/print_stack_usage
"make" -C /data/riotbuild/riotbase/sys/timex
"make" -C /data/riotbuild/riotbase/sys/tsrb
"make" -C /data/riotbuild/riotbase/sys/ztimer
"make" -C /data/riotbuild/riotbase/sys/ztimer64
"make" -C /data/riotbuild/riotbase/tests/pkg_tflite-micro/external_modules/mnist
esptool.py v3.2-dev
Merged 1 ELF section
Parsing CSV input...
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/work/riot/RIOT/dist/tools/esptools/esptool_v3.2.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 --before default_reset write_flash -z --flash_mode dout --flash_freq 40m    0x1000 /work/riot/RIOT/cpu/esp32/bin/bootloader.bin 0x8000 /work/riot/RIOT/tests/pkg_tflite-micro/bin/esp32-wroom-32/partitions.bin 0x10000 /work/riot/RIOT/tests/pkg_tflite-micro/bin/esp32-wroom-32/tests_pkg_tflite-micro.elf.bin
esptool.py v3.2-dev
Serial port /dev/ttyUSB0
Connecting....
Chip is ESP32-D0WDQ6 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 80:7d:3a:fd:d9:90
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 460800
Changed.
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Leaving...
Hard resetting via RTS pin...
r
/work/riot/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyUSB0" -b "115200" --no-reconnect --noprefix --no-repeat-command-on-empty-line 
Twisted not available, please install it if you want to use pyterm's JSON capabilities
Connect to serial port /dev/ttyUSB0
Welcome to pyterm!
Type '/exit' to exit.
READY
s
START
main(): This is RIOT! (Version: 2022.04-devel-1111-ge56b5-pr/pkg/tflite-micro)
Digit prediction: 7

Murdock should catch other issues.

Issues/PRs references

closes #16416

benpicco

Looks all good and tests output has been provided.
Thank you for packaging all of this!

benpicco · 2022-04-08T09:17:14Z

tests/pkg_tflite-micro/Makefile

+USEPKG += tflite-micro
+
+# TensorFlow-Lite crashes on M4/M7 CPUs when FPU is enabled, so disable it by
+# default for now


Can you open an issue for that?
Smells fishy.

Does this package make use of the DSP instructions found in those cores? Might be that we are not handling those registers properly yet.

Can you open an issue for that?

Sure. I tested without just to be sure and on cortexm it ends up with a hardfault. Maybe that's the same issue on riscv ?

Does this package make use of the DSP instructions found in those cores? Might be that we are not handling those registers properly yet.

There's room for improvements. On cortex m4/7, we could enable CMSIS-NN primitives to speed up the inference (40% gain).
More generally, we could package kissfft and see how to support more complex scenario for keyword spotting. I was not able to make the whole stuff to work when I ported tensorflow-lite (back in 2019/2020) but maybe things have evolved positively since then.
I'm also looking into the edge-impulse SDK (I have a branch) which also relies on tensorflow and is easier to package, all third-party libraries are present in the repo, so can adapted with only one package.

kfessel · 2022-04-08T09:24:33Z

Since this has a component of git clone-bytes and size of clones i would like to promote #16316

benpicco · 2022-04-08T10:51:34Z

Looks like Makefile.ci needs an update

aabadie · 2022-04-08T11:50:10Z

Looks like Makefile.ci needs an update

I'm running locally the create-Makefile.ci target but it will take some time (each build is time consuming...)

aabadie requested review from leandrolanzieri, jia200x, cgundogan, miri64, smlng, MichelRottleuthner and fjmolinas as code owners April 8, 2022 09:05

github-actions bot added Area: build system Area: Build system Area: doc Area: Documentation Area: Kconfig Area: Kconfig integration Area: pkg Area: External package ports Area: tests Area: tests and testing framework labels Apr 8, 2022

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benpicco approved these changes Apr 8, 2022

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aabadie force-pushed the pr/pkg/tflite-micro branch from 3d913bd to c06b576 Compare April 8, 2022 12:27

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aabadie force-pushed the pr/pkg/tflite-micro branch from 50ca2a7 to ab0ace4 Compare April 8, 2022 15:16

aabadie added 6 commits April 8, 2022 17:18

pkg/ruy: add support for matrix multiplication library

df34c0e

pkg/gemmlowp: bump version

169f38c

pkg/flatbuffers: bump to v2.0.0

8d2b5b9

pkg/tensorflow-lite: bump version to 2.2.2

b3ea229

pkg/tflite-micro: add support for tflite-micro

0efe0f8

pkg/tensorflow-lite: deprecate package

21ea4e7

tests/pkg_tensorflow-lite: adapt and rename to tflite-micro

9b826b6

aabadie force-pushed the pr/pkg/tflite-micro branch from ab0ace4 to 9b826b6 Compare April 8, 2022 15:19

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aabadie merged commit 4c125db into RIOT-OS:master Apr 8, 2022

aabadie deleted the pr/pkg/tflite-micro branch April 8, 2022 16:37

aabadie mentioned this pull request Apr 22, 2022

pkg/tflite-micro: add kconfig support #17985

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OlegHahm added this to the Release 2022.04 milestone Apr 25, 2022

aabadie mentioned this pull request Jan 4, 2023

tests/pkg_tensorflow-lite: tests randomly failing on nrf52dk and esp32-wroom-32 #13133

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This was referenced May 19, 2023

pkg/tensorflow-lite: remove deprecated package #19624

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[Tracking]: modeling dependencies in Kconfig #16875

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pkg/tflite-micro: add support and deprecate tensorflow-lite #17908

pkg/tflite-micro: add support and deprecate tensorflow-lite #17908

aabadie commented Apr 8, 2022

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kfessel commented Apr 8, 2022

benpicco commented Apr 8, 2022

aabadie commented Apr 8, 2022

pkg/tflite-micro: add support and deprecate tensorflow-lite #17908

pkg/tflite-micro: add support and deprecate tensorflow-lite #17908

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aabadie commented Apr 8, 2022

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