add littlefs2 build command

Author: imliubo

README.md

@@ -14,6 +14,7 @@ git -C esp-idf submodule update --init --recursive
 ```shell
 git clone https://github.com/m5stack/uiflow_micropython
 cd uiflow_micropython/m5stack
+make littlefs
 make submodules
 make mpy-cross
 make -j

m5stack/Makefile

@@ -75,12 +75,17 @@ nvs:
 	python ./../tools/nvs_partition_gen.py generate partition_nvs.csv \
 	$(BUILD)/nvs.bin 0x6000 # defined in partitions.csv
 
+littlefs:
+	cd ./../tools/littlefs && rm ./build -rf && mkdir build && cd build && \
+	cmake .. && make -j && cp ./littlefs2 ./../prebuilt/linux
+
 mpy-cross:
 	make -C ../micropython/mpy-cross
 
 # The two submodules do not belong to the same repository
 # micropython submodule belong to uiflow_micropython
 # berkeley-db-1.xx submodule belong to micropython submodule
 submodules:
+	git submodule update --init ../tools/littlefs/mbed-littlefs
 	git submodule update --init ../micropython
 	cd ./../micropython && git submodule update --init $(addprefix ./,$(GIT_SUBMODULES)) && cd -	

tools/ci.sh

@@ -92,6 +92,7 @@ function ci_esp32_idf44_setup {
 
 function ci_esp32_build {
     source esp-idf/export.sh
+    make ${MAKEOPTS} -C m5stack littlefs
     make ${MAKEOPTS} -C m5stack mpy-cross
     make ${MAKEOPTS} -C m5stack submodules
     make ${MAKEOPTS} -C m5stack