This is an automated email from the ASF dual-hosted git repository.
xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx-apps.git
commit 71cbcb26180a3fb81af861edc3ae179cafa32a0c
Author: renzhiyuan1 <renzhiyu...@xiaomi.com>
AuthorDate: Fri Nov 17 19:01:19 2023 +0800
Add configurations files.
Add configuration files of TFLite Micro, its dependent third-party
libraries and CMSIS_NN.
Signed-off-by: renzhiyuan1 <renzhiyu...@xiaomi.com>
---
math/gemmlowp/Kconfig | 25 +++++++
math/gemmlowp/Make.defs | 23 ++++++
math/gemmlowp/Makefile | 41 +++++++++++
math/kissfft/Kconfig | 25 +++++++
math/kissfft/Make.defs | 23 ++++++
math/kissfft/Makefile | 45 ++++++++++++
math/kissfft/kissfft.patch | 116 ++++++++++++++++++++++++++++++
math/ruy/Kconfig | 25 +++++++
math/ruy/Make.defs | 23 ++++++
math/ruy/Makefile | 42 +++++++++++
mlearning/cmsis-nn/Kconfig | 25 +++++++
mlearning/cmsis-nn/Make.defs | 25 +++++++
mlearning/cmsis-nn/Makefile | 51 +++++++++++++
mlearning/tflite-micro/Kconfig | 24 +++++++
mlearning/tflite-micro/Make.defs | 23 ++++++
mlearning/tflite-micro/Makefile | 83 +++++++++++++++++++++
mlearning/tflite-micro/tflite-micro.patch | 14 ++++
system/flatbuffers/Kconfig | 25 +++++++
system/flatbuffers/Make.defs | 25 +++++++
system/flatbuffers/Makefile | 40 +++++++++++
system/flatbuffers/flatbuffers.patch | 100 ++++++++++++++++++++++++++
21 files changed, 823 insertions(+)
diff --git a/math/gemmlowp/Kconfig b/math/gemmlowp/Kconfig
new file mode 100644
index 000000000..b4b4a5a4a
--- /dev/null
+++ b/math/gemmlowp/Kconfig
@@ -0,0 +1,25 @@
+############################################################################
+# apps/math/gemmlowp/Kconfig
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+config MATH_GEMMLOWP
+ bool "Gemmlowp"
+ default n
+ ---help---
+ Enable gemmlowp.
diff --git a/math/gemmlowp/Make.defs b/math/gemmlowp/Make.defs
new file mode 100644
index 000000000..ecd7abd03
--- /dev/null
+++ b/math/gemmlowp/Make.defs
@@ -0,0 +1,23 @@
+############################################################################
+# apps/math/gemmlowp/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_MATH_GEMMLOWP),)
+CONFIGURED_APPS += $(APPDIR)/math/gemmlowp
+endif
diff --git a/math/gemmlowp/Makefile b/math/gemmlowp/Makefile
new file mode 100644
index 000000000..3f5b76456
--- /dev/null
+++ b/math/gemmlowp/Makefile
@@ -0,0 +1,41 @@
+############################################################################
+# apps/math/gemmlowp/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+MODULE = $(CONFIG_MATH_GEMMLOWP)
+
+GEMMLOWP_VER = 719139ce755a0f31cbf1c37f7f98adcc7fc9f425
+
+gemmlowp.zip:
+ $(Q) curl -L
https://github.com/google/gemmlowp/archive/$(GEMMLOWP_VER).zip -o gemmlowp.zip
+ $(Q) unzip -o gemmlowp.zip
+ $(Q) mv gemmlowp-$(GEMMLOWP_VER) gemmlowp
+
+# Download and unpack tarball if no git repo found
+ifeq ($(wildcard gemmlowp/.git),)
+context:: gemmlowp.zip
+
+distclean::
+ $(call DELDIR, gemmlowp)
+ $(call DELFILE, gemmlowp.zip)
+endif
+
+include $(APPDIR)/Application.mk
diff --git a/math/kissfft/Kconfig b/math/kissfft/Kconfig
new file mode 100644
index 000000000..686c116e6
--- /dev/null
+++ b/math/kissfft/Kconfig
@@ -0,0 +1,25 @@
+############################################################################
+# apps/math/kissfft/Kconfig
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+config MATH_KISSFFT
+ bool "kissfft"
+ default n
+ ---help---
+ Enable kissfft.
diff --git a/math/kissfft/Make.defs b/math/kissfft/Make.defs
new file mode 100644
index 000000000..3da1486c9
--- /dev/null
+++ b/math/kissfft/Make.defs
@@ -0,0 +1,23 @@
+############################################################################
+# apps/math/kissfft/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_MATH_KISSFFT),)
+CONFIGURED_APPS += $(APPDIR)/math/kissfft
+endif
diff --git a/math/kissfft/Makefile b/math/kissfft/Makefile
new file mode 100644
index 000000000..3a3b2e824
--- /dev/null
+++ b/math/kissfft/Makefile
@@ -0,0 +1,45 @@
+############################################################################
+# apps/math/kissfft/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+CSRCS += kissfft/tools/kiss_fftr.c
+CSRCS += kissfft/kiss_fft.c
+
+CFLAGS += ${INCDIR_PREFIX}$(APPDIR)/math/kissfft/kissfft
+
+KISSFFT_VER = 130
+KISSFFT_UNPACK = kissfft
+
+kissfft.zip:
+ $(Q) curl -L
https://github.com/mborgerding/kissfft/archive/refs/tags/v$(KISSFFT_VER).zip -o
kissfft.zip
+ $(Q) unzip -o kissfft.zip
+ $(Q) mv kissfft-$(KISSFFT_VER) kissfft
+ $(Q) patch -d $(KISSFFT_UNPACK) -p1 < kissfft.patch
+
+# Download and unpack tarball if no git repo found
+ifeq ($(wildcard kissfft/.git),)
+context:: kissfft.zip
+distclean::
+ $(call DELDIR, kissfft)
+ $(call DELFILE, kissfft.zip)
+endif
+
+include $(APPDIR)/Application.mk
diff --git a/math/kissfft/kissfft.patch b/math/kissfft/kissfft.patch
new file mode 100644
index 000000000..404d91f9e
--- /dev/null
+++ b/math/kissfft/kissfft.patch
@@ -0,0 +1,116 @@
+diff --git a/_kiss_fft_guts.h b/_kiss_fft_guts.h
+index ba66144..1a0f4c2 100644
+--- a/_kiss_fft_guts.h
++++ b/_kiss_fft_guts.h
+@@ -1,3 +1,6 @@
++#ifndef _KISS_FFT_GUTS_H
++#define _KISS_FFT_GUTS_H
++
+ /*
+ Copyright (c) 2003-2010, Mark Borgerding
+
+@@ -135,7 +138,7 @@ struct kiss_fft_state{
+ #else
+ # define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
+ # define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
+-# define HALF_OF(x) ((x)*.5)
++# define HALF_OF(x) ((x)*(kiss_fft_scalar).5)
+ #endif
+
+ #define kf_cexp(x,phase) \
+@@ -162,3 +165,4 @@ struct kiss_fft_state{
+ #define KISS_FFT_TMP_ALLOC(nbytes) KISS_FFT_MALLOC(nbytes)
+ #define KISS_FFT_TMP_FREE(ptr) KISS_FFT_FREE(ptr)
+ #endif
++#endif // _KISS_FFT_GUTS_H
+diff --git a/kiss_fft.c b/kiss_fft.c
+index 465d6c9..9133a01 100644
+--- a/kiss_fft.c
++++ b/kiss_fft.c
+@@ -375,7 +375,7 @@ void kiss_fft_stride(kiss_fft_cfg st,const kiss_fft_cpx
*fin,kiss_fft_cpx *fout,
+ //It just performs an out-of-place FFT into a temp buffer
+ kiss_fft_cpx * tmpbuf = (kiss_fft_cpx*)KISS_FFT_TMP_ALLOC(
sizeof(kiss_fft_cpx)*st->nfft);
+ kf_work(tmpbuf,fin,1,in_stride, st->factors,st);
+- memcpy(fout,tmpbuf,sizeof(kiss_fft_cpx)*st->nfft);
++ /* memcpy(fout,tmpbuf,sizeof(kiss_fft_cpx)*st->nfft); */
+ KISS_FFT_TMP_FREE(tmpbuf);
+ }else{
+ kf_work( fout, fin, 1,in_stride, st->factors,st );
+diff --git a/kiss_fft.h b/kiss_fft.h
+index 64c50f4..24e4d0c 100644
+--- a/kiss_fft.h
++++ b/kiss_fft.h
+@@ -7,7 +7,7 @@
+ #include <string.h>
+
+ #ifdef __cplusplus
+-extern "C" {
++extern "C++" {
+ #endif
+
+ /*
+@@ -29,13 +29,13 @@ extern "C" {
+ #define KISS_FFT_MALLOC(nbytes) _mm_malloc(nbytes,16)
+ #define KISS_FFT_FREE _mm_free
+ #else
+-#define KISS_FFT_MALLOC malloc
+-#define KISS_FFT_FREE free
++#define KISS_FFT_MALLOC(X) (void*)(0x0) /* Patched. */
++#define KISS_FFT_FREE(X) /* Patched. */
+ #endif
+
+
+ #ifdef FIXED_POINT
+-#include <sys/types.h>
++#include <stdint.h> /* Patched. */
+ # if (FIXED_POINT == 32)
+ # define kiss_fft_scalar int32_t
+ # else
+diff --git a/tools/kiss_fftr.c b/tools/kiss_fftr.c
+index b8e238b..0d22a04 100644
+--- a/tools/kiss_fftr.c
++++ b/tools/kiss_fftr.c
+@@ -31,7 +31,7 @@ kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void
* mem,size_t * lenme
+ size_t subsize, memneeded;
+
+ if (nfft & 1) {
+- fprintf(stderr,"Real FFT optimization must be even.\n");
++ /* fprintf(stderr,"Real FFT optimization must be even.\n"); */
+ return NULL;
+ }
+ nfft >>= 1;
+@@ -71,8 +71,8 @@ void kiss_fftr(kiss_fftr_cfg st,const kiss_fft_scalar
*timedata,kiss_fft_cpx *fr
+ kiss_fft_cpx fpnk,fpk,f1k,f2k,tw,tdc;
+
+ if ( st->substate->inverse) {
+- fprintf(stderr,"kiss fft usage error: improper alloc\n");
+- exit(1);
++ /* fprintf(stderr,"kiss fft usage error: improper alloc\n"); */
++ return; /* exit(1); */
+ }
+
+ ncfft = st->substate->nfft;
+@@ -126,8 +126,8 @@ void kiss_fftri(kiss_fftr_cfg st,const kiss_fft_cpx
*freqdata,kiss_fft_scalar *t
+ int k, ncfft;
+
+ if (st->substate->inverse == 0) {
+- fprintf (stderr, "kiss fft usage error: improper alloc\n");
+- exit (1);
++ /* fprintf (stderr, "kiss fft usage error: improper alloc\n"); */
++ return; /* exit (1); */
+ }
+
+ ncfft = st->substate->nfft;
+diff --git a/tools/kiss_fftr.h b/tools/kiss_fftr.h
+index 72e5a57..b888a28 100644
+--- a/tools/kiss_fftr.h
++++ b/tools/kiss_fftr.h
+@@ -3,7 +3,7 @@
+
+ #include "kiss_fft.h"
+ #ifdef __cplusplus
+-extern "C" {
++extern "C++" {
+ #endif
+
+
diff --git a/math/ruy/Kconfig b/math/ruy/Kconfig
new file mode 100644
index 000000000..71b4890e2
--- /dev/null
+++ b/math/ruy/Kconfig
@@ -0,0 +1,25 @@
+############################################################################
+# apps/math/ruy/Kconfig
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+config MATH_RUY
+ bool "Ruy"
+ default n
+ ---help---
+ Enable ruy.
diff --git a/math/ruy/Make.defs b/math/ruy/Make.defs
new file mode 100644
index 000000000..bdba60a48
--- /dev/null
+++ b/math/ruy/Make.defs
@@ -0,0 +1,23 @@
+############################################################################
+# apps/math/ruy/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_MATH_RUY),)
+CONFIGURED_APPS += $(APPDIR)/math/ruy
+endif
diff --git a/math/ruy/Makefile b/math/ruy/Makefile
new file mode 100644
index 000000000..992c794c2
--- /dev/null
+++ b/math/ruy/Makefile
@@ -0,0 +1,42 @@
+############################################################################
+# apps/math/ruy/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+RUY_VER = 54774a7a2cf85963777289193629d4bd42de4a59
+
+ruy.zip:
+ $(Q) curl -L https://github.com/google/ruy/archive/$(RUY_VER).zip -o
ruy.zip
+ $(Q) unzip -o ruy.zip
+ $(Q) mv ruy-$(RUY_VER) ruy
+
+# Download and unpack tarball if no git repo found
+ifeq ($(wildcard ruy/.git),)
+context:: ruy.zip
+
+distclean::
+ $(call DELDIR, ruy)
+ $(call DELFILE, ruy.zip)
+endif
+
+CFLAGS += ${INCDIR_PREFIX}$(APPDIR)/math/ruy/ruy
+CXXFLAGS += ${INCDIR_PREFIX}$(APPDIR)/math/ruy/ruy
+
+include $(APPDIR)/Application.mk
diff --git a/mlearning/cmsis-nn/Kconfig b/mlearning/cmsis-nn/Kconfig
new file mode 100644
index 000000000..1500f7d07
--- /dev/null
+++ b/mlearning/cmsis-nn/Kconfig
@@ -0,0 +1,25 @@
+############################################################################
+# apps/mlearning/cmsis-nn/Kconfig
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+config MLEARNING_CMSIS_NN
+ bool "CMSIS_NN Library"
+ default n
+ ---help---
+ Enable CMSIS_NN.
diff --git a/mlearning/cmsis-nn/Make.defs b/mlearning/cmsis-nn/Make.defs
new file mode 100644
index 000000000..669ca73a2
--- /dev/null
+++ b/mlearning/cmsis-nn/Make.defs
@@ -0,0 +1,25 @@
+############################################################################
+# apps/mlearning/cmsis/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_MLEARNING_CMSIS_NN),)
+CONFIGURED_APPS += $(APPDIR)/mlearning/cmsis-nn
+CFLAGS += ${INCDIR_PREFIX}$(APPDIR)/mlearning/cmsis-nn/cmsis-nn/Include
+CXXFLAGS += ${INCDIR_PREFIX}$(APPDIR)/mlearning/cmsis-nn/cmsis-nn/Include
+endif
diff --git a/mlearning/cmsis-nn/Makefile b/mlearning/cmsis-nn/Makefile
new file mode 100644
index 000000000..54b374ed4
--- /dev/null
+++ b/mlearning/cmsis-nn/Makefile
@@ -0,0 +1,51 @@
+############################################################################
+# apps/mlearning/cmsis-nn/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+CMSIS_NN = cmsis-nn/Source
+
+CMSIS_NN_VER = bfc54edb61e873039ec0857cacc40df36b1d644e
+
+cmsis-nn.zip:
+ $(Q) curl -L
https://github.com/ARM-software/CMSIS-NN/archive/$(CMSIS_NN_VER).zip -o
cmsis-nn.zip
+ $(Q) unzip -o cmsis-nn.zip
+ $(Q) mv CMSIS-NN-$(CMSIS_NN_VER) cmsis-nn
+
+ifeq ($(wildcard cmsis-nn/.git),)
+context:: cmsis-nn.zip
+distclean::
+ $(call DELDIR, cmsis-nn)
+ $(call DELFILE, cmsis-nn.zip)
+endif
+
+CSRCS += $(wildcard $(CMSIS_NN)/ActivationFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/BasicMathFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/PoolingFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/ConvolutionFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/SVDFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/FullyConnectedFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/NNSupportFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/ConcatenationFunctions/*.c)
+CSRCS += $(wildcard $(CMSIS_NN)/SoftmaxFunctions/*.c)
+CSRCS += $(CMSIS_NN)/LSTMFunctions/arm_lstm_unidirectional_s8_s16.c
+CSRCS += $(CMSIS_NN)/ReshapeFunctions/arm_reshape_s8.c
+
+include $(APPDIR)/Application.mk
diff --git a/mlearning/tflite-micro/Kconfig b/mlearning/tflite-micro/Kconfig
new file mode 100644
index 000000000..15b841ef6
--- /dev/null
+++ b/mlearning/tflite-micro/Kconfig
@@ -0,0 +1,24 @@
+############################################################################
+# apps/mlearning/tflite-micro/Kconfig
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+config TFLITEMICRO
+ bool "TFLiteMicro"
+ default n
+ depends on SYSTEM_FLATBUFFERS && MATH_GEMMLOWP && MATH_KISSFFT &&
MATH_RUY
diff --git a/mlearning/tflite-micro/Make.defs b/mlearning/tflite-micro/Make.defs
new file mode 100644
index 000000000..bd3752539
--- /dev/null
+++ b/mlearning/tflite-micro/Make.defs
@@ -0,0 +1,23 @@
+############################################################################
+# apps/mlearning/tflite-micro/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_TFLITEMICRO),)
+CONFIGURED_APPS += $(APPDIR)/mlearning/tflite-micro
+endif
diff --git a/mlearning/tflite-micro/Makefile b/mlearning/tflite-micro/Makefile
new file mode 100644
index 000000000..f9c5849e6
--- /dev/null
+++ b/mlearning/tflite-micro/Makefile
@@ -0,0 +1,83 @@
+############################################################################
+# apps/mlearning/tflite-micro/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+TFLITE_MICRO_VER = main
+TFLITE_MICRO_UNPACK = tflite-micro
+
+tflite-micro.zip:
+ $(Q) curl -L
https://github.com/tensorflow/tflite-micro/archive/refs/heads/$(TFLITE_MICRO_VER).zip
-o tflite-micro.zip
+ $(Q) unzip -o tflite-micro.zip
+ $(Q) mv tflite-micro-$(TFLITE_MICRO_VER) tflite-micro
+ $(Q) patch -d $(TFLITE_MICRO_UNPACK) -p1 < tflite-micro.patch
+
+# Download and unpack tarball if no git repo found
+ifeq ($(wildcard tflite-micro/.git),)
+context:: tflite-micro.zip
+distclean::
+ $(call DELDIR, tflite-micro)
+ $(call DELFILE, tflite-micro.zip)
+endif
+
+CXXEXT := .cc
+
+COMMON_FLAGS += -DTF_LITE_STATIC_MEMORY
+COMMON_FLAGS += -DTF_LITE_DISABLE_X86_NEON
+COMMON_FLAGS += -Wno-undef
+COMMON_FLAGS += -Wno-shadow
+
+SRC_FILES := $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/kernels/*.cc)
+
+ifeq ($(CONFIG_MLEARNING_CMSIS_NN),y)
+COMMON_FLAGS += -DCMSIS_NN
+COMMON_FLAGS += ${INCDIR_PREFIX}$(APPDIR)/mlearning/cmsis-nn/cmsis-nn
+NEW_SRC_FILES := $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/kernels/cmsis_nn/*.cc)
+SRC_FILES := $(filter-out $(notdir $(NEW_SRC_FILES)), $(notdir $(SRC_FILES)))
+SRC_FILES := $(addprefix
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/kernels/,
$(SRC_FILES))
+SRC_FILES += $(NEW_SRC_FILES)
+endif
+
+COMMON_FLAGS += ${INCDIR_PREFIX}$(APPDIR)/math/gemmlowp/gemmlowp
+COMMON_FLAGS += ${INCDIR_PREFIX}$(APPDIR)/math/ruy/ruy
+COMMON_FLAGS += ${INCDIR_PREFIX}$(APPDIR)/math/kissfft/kissfft
+COMMON_FLAGS += ${INCDIR_PREFIX}$(APPDIR)/mlearning/tflite-micro/tflite-micro
+
+CFLAGS += ${COMMON_FLAGS}
+CXXFLAGS += ${COMMON_FLAGS}
+
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/c/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/schema/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/core/c/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/kernels/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/kernels/internal/optimized/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/kernels/internal/reference/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/kernels/internal/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/core/api/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/arena_allocator/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/memory_planner/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/*.cc)
+SRC_FILES += $(wildcard
$(APPDIR)/mlearning/tflite-micro/tflite-micro/tensorflow/lite/micro/tflite_bridge/*.cc)
+
+SRC_FILES := $(filter-out %test.cc, $(SRC_FILES))
+
+CXXSRCS += $(SRC_FILES)
+
+include $(APPDIR)/Application.mk
diff --git a/mlearning/tflite-micro/tflite-micro.patch
b/mlearning/tflite-micro/tflite-micro.patch
new file mode 100644
index 000000000..f38291a5a
--- /dev/null
+++ b/mlearning/tflite-micro/tflite-micro.patch
@@ -0,0 +1,14 @@
+diff --git a/signal/src/circular_buffer.cc b/signal/src/circular_buffer.cc
+index 7638d912..3261be56 100644
+--- a/signal/src/circular_buffer.cc
++++ b/signal/src/circular_buffer.cc
+@@ -19,7 +19,9 @@ limitations under the License.
+ #include <stdlib.h>
+ #include <string.h>
+
++#ifndef ASSERT
+ #define ASSERT assert
++#endif
+
+ namespace tflite {
+ namespace tflm_signal {
diff --git a/system/flatbuffers/Kconfig b/system/flatbuffers/Kconfig
new file mode 100644
index 000000000..7ece716ba
--- /dev/null
+++ b/system/flatbuffers/Kconfig
@@ -0,0 +1,25 @@
+############################################################################
+# apps/system/flatbuffers/Kconfig
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+config SYSTEM_FLATBUFFERS
+ bool "flatbuffers"
+ default n
+ ---help---
+ Enable flatbuffers.
diff --git a/system/flatbuffers/Make.defs b/system/flatbuffers/Make.defs
new file mode 100644
index 000000000..7c313e524
--- /dev/null
+++ b/system/flatbuffers/Make.defs
@@ -0,0 +1,25 @@
+############################################################################
+# apps/system/flatbuffers/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_SYSTEM_FLATBUFFERS),)
+CONFIGURED_APPS += $(APPDIR)/system/flatbuffers
+CFLAGS += ${INCDIR_PREFIX}$(APPDIR)/system/flatbuffers/flatbuffers/include
+CXXFLAGS += ${INCDIR_PREFIX}$(APPDIR)/system/flatbuffers/flatbuffers/include
+endif
diff --git a/system/flatbuffers/Makefile b/system/flatbuffers/Makefile
new file mode 100644
index 000000000..3b01f6bac
--- /dev/null
+++ b/system/flatbuffers/Makefile
@@ -0,0 +1,40 @@
+############################################################################
+# apps/system/flatbuffers/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+FLATBUFFERS_VER = 23.5.26
+FLATBUFFERS_UNPACK = flatbuffers
+
+flatbuffers.tar.gz:
+ $(Q) curl -L
https://github.com/google/flatbuffers/archive/v$(FLATBUFFERS_VER).tar.gz -o
flatbuffers.tar.gz
+ $(Q) tar -xzf flatbuffers.tar.gz
+ $(Q) mv flatbuffers-$(FLATBUFFERS_VER) flatbuffers
+ $(Q) patch -d $(FLATBUFFERS_UNPACK) -p1 < flatbuffers.patch
+
+# Download and unpack tarball if no git repo found
+ifeq ($(wildcard flatbuffers/.git),)
+context:: flatbuffers.tar.gz
+distclean::
+ $(call DELDIR, flatbuffers)
+ $(call DELFILE, flatbuffers.tar.gz)
+endif
+
+include $(APPDIR)/Application.mk
diff --git a/system/flatbuffers/flatbuffers.patch
b/system/flatbuffers/flatbuffers.patch
new file mode 100644
index 000000000..2017775aa
--- /dev/null
+++ b/system/flatbuffers/flatbuffers.patch
@@ -0,0 +1,100 @@
+diff --git a/include/flatbuffers/base.h b/include/flatbuffers/base.h
+index 5c4cae79..1a631641 100644
+--- a/include/flatbuffers/base.h
++++ b/include/flatbuffers/base.h
+@@ -1,6 +1,16 @@
+ #ifndef FLATBUFFERS_BASE_H_
+ #define FLATBUFFERS_BASE_H_
+
++// For TFLM, we always want FLATBUFFERS_LOCALE_INDEPENDENT to be defined as 0.
++// We could achieve this by adding -DFLATBUFFERS_LOCALE_INDEPENDENT=0 to the
++// TFLM Makefile. However, for (at least) the Arduino, adding additional build
++// flags during the compilation can be a bit awkward. As such, we have instead
++// made a decision to change the default to be
FLATBUFFERS_LOCALE_INDEPENDENT=0
++// for TFLM to make it easier for external IDE integration.
++#ifndef FLATBUFFERS_LOCALE_INDEPENDENT
++#define FLATBUFFERS_LOCALE_INDEPENDENT 0
++#endif
++
+ // clang-format off
+
+ // If activate should be declared and included first.
+diff --git a/include/flatbuffers/default_allocator.h
b/include/flatbuffers/default_allocator.h
+index d4724122..975d9380 100644
+--- a/include/flatbuffers/default_allocator.h
++++ b/include/flatbuffers/default_allocator.h
+@@ -39,24 +39,18 @@ class DefaultAllocator : public Allocator {
+ // This is to avoid having a statically or dynamically allocated default
+ // allocator, or having to move it between the classes that may own it.
+ inline uint8_t *Allocate(Allocator *allocator, size_t size) {
+- return allocator ? allocator->allocate(size)
+- : DefaultAllocator().allocate(size);
++ return allocator->allocate(size);
+ }
+
+ inline void Deallocate(Allocator *allocator, uint8_t *p, size_t size) {
+- if (allocator)
+- allocator->deallocate(p, size);
+- else
+- DefaultAllocator().deallocate(p, size);
++ allocator->deallocate(p, size);
+ }
+
+ inline uint8_t *ReallocateDownward(Allocator *allocator, uint8_t *old_p,
+ size_t old_size, size_t new_size,
+ size_t in_use_back, size_t in_use_front) {
+- return allocator ? allocator->reallocate_downward(old_p, old_size, new_size,
+- in_use_back, in_use_front)
+- : DefaultAllocator().reallocate_downward(
+- old_p, old_size, new_size, in_use_back,
in_use_front);
++ return allocator->reallocate_downward(old_p, old_size, new_size,
in_use_back,
++ in_use_front);
+ }
+
+ } // namespace flatbuffers
+diff --git a/include/flatbuffers/flexbuffers.h
b/include/flatbuffers/flexbuffers.h
+index 8e8cac14..52dae316 100644
+--- a/include/flatbuffers/flexbuffers.h
++++ b/include/flatbuffers/flexbuffers.h
+@@ -495,9 +495,24 @@ class Reference {
+ return static_cast<double>(ReadUInt64(Indirect(), byte_width_));
+ case FBT_NULL: return 0.0;
+ case FBT_STRING: {
++#if 1
++#if !defined( _MSC_VER)
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Wnull-dereference"
++#endif
++ // See b/173239141 for additional context. Patched via
++ // micro/tools/make/flexbuffers_download.sh
++ // Introduce a segfault for an unsupported code path for TFLM.
++ return *(static_cast<double*>(nullptr));
++#if !defined( _MSC_VER)
++#pragma GCC diagnostic pop
++#endif
++#else
++ // This is the original code
+ double d;
+ flatbuffers::StringToNumber(AsString().c_str(), &d);
+ return d;
++#endif
+ }
+ case FBT_VECTOR: return static_cast<double>(AsVector().size());
+ case FBT_BOOL:
+diff --git a/include/flatbuffers/util.h b/include/flatbuffers/util.h
+index 1ccf3517..34a75193 100644
+--- a/include/flatbuffers/util.h
++++ b/include/flatbuffers/util.h
+@@ -23,6 +23,12 @@
+ #include "flatbuffers/base.h"
+ #include "flatbuffers/stl_emulation.h"
+
++// For TFLM we always want to use FLATBUFFERS_PREFER_PRINTF=1. See
++// http://b/211811553 for more context.
++#ifndef FLATBUFFERS_PREFER_PRINTF
++#define FLATBUFFERS_PREFER_PRINTF 1
++#endif
++
+ #ifndef FLATBUFFERS_PREFER_PRINTF
+ # include <iomanip>
+ # include <sstream>
