fix freertos kernel compatibility

Makefile

@@ -4,7 +4,7 @@ SDK_VERSION := 2.1.0
 PICOTOOL := $(INSTALL_PATH)/picotool/$(SDK_VERSION)/build/picotool
 
 export PICO_SDK_PATH=$(INSTALL_PATH)/sdk/$(SDK_VERSION)
- # if using a different platform or arch, set ot here
+ # if using a different platform or arch, set it here
 export PICO_PLATFORM=rp2350
 
 # project name, need to be passed as make input (ex: make project name=test)
@@ -13,6 +13,7 @@ name := ""
 install:
 	@./scripts/install_sdk.bash $(SDK_VERSION)
 	@./scripts/install_picotool.bash $(SDK_VERSION)
+	@./scripts/install_freertos.bash
 
 info:
 	@$(PICOTOOL) info -a
@@ -20,7 +21,22 @@ info:
 project:
 	@./scripts/scaffold_project.bash $(name) $(SDK_VERSION)
 
-compile:
+.check-name:
+ifeq ($(strip $(name)), "")
+	@echo "error: project name must be set, ex: name=<project_name>"
+	@false
+endif
+
+ifeq ($(shell test -d $(name) && echo "ok"),)
+	@echo "error: project $(name) does not exist"
+	@false
+endif
+
+format: .check-name
+	@test -f "$(shell find /usr/bin/ -name astyle)" && astyle --style=java --indent=spaces=4 -K -xC120 $(name)/*.c
+
+compile: format
+	rm -f ${name}/build/CMakeCache.txt
 	@(test -d ${name} && mkdir -p ${name}/build && cd ${name}/build && cmake .. && make -j$(nproc) && echo "project compile successfully") || echo "error: unable to compile project: $(name)"
 
 push: compile