feat(coap): Bring coap component and example from idf

Commit ID: 463a9d8b

Author: ESP-YJM

.gitmodules

@@ -13,3 +13,7 @@
 [submodule "components/mqtt/esp-mqtt"]
 	path = components/mqtt/esp-mqtt
 	url = ../../espressif/esp-mqtt.git
+
+[submodule "components/coap/libcoap"]
+	path = components/coap/libcoap
+	url = ../../espressif/libcoap

components/coap/CMakeLists.txt

@@ -1,43 +1,37 @@
-set(COMPONENT_ADD_INCLUDEDIRS port/include port/include/coap libcoap/include libcoap/include/coap)
+set(include_dirs port/include port/include/coap libcoap/include libcoap/include/coap2)
 
-set(COMPONENT_SRCS
-    libcoap/src/address.c
-    libcoap/src/async.c
-    libcoap/src/block.c
-    libcoap/src/coap_time.c
-    libcoap/src/debug.c
-    libcoap/src/encode.c
-    libcoap/src/hashkey.c
-    libcoap/src/mem.c
-    libcoap/src/net.c
-    libcoap/src/option.c
-    libcoap/src/pdu.c
-    libcoap/src/resource.c
-    libcoap/src/str.c
-    libcoap/src/subscribe.c
-    libcoap/src/uri.c
-    port/coap_io_socket.c
-    )
+set(srcs 
+    "libcoap/src/address.c"
+    "libcoap/src/async.c"
+    "libcoap/src/block.c"
+    "libcoap/src/coap_event.c"
+    "libcoap/src/coap_hashkey.c"
+    "libcoap/src/coap_session.c"
+    "libcoap/src/coap_time.c"
+    "libcoap/src/coap_debug.c"
+    "libcoap/src/encode.c"
+    "libcoap/src/mem.c"
+    "libcoap/src/net.c"
+    "libcoap/src/option.c"
+    "libcoap/src/pdu.c"
+    "libcoap/src/resource.c"
+    "libcoap/src/str.c"
+    "libcoap/src/subscribe.c"
+    "libcoap/src/uri.c"
+    "libcoap/src/coap_notls.c"
+    "port/coap_io.c")
 
 set(COMPONENT_REQUIRES lwip)
 
-register_component()
+idf_component_register(SRCS "${srcs}"
+                    INCLUDE_DIRS "${include_dirs}"
+                    REQUIRES lwip)
+
+# Silence format truncation warning, until it is fixed upstream
+set_source_files_properties(libcoap/src/coap_debug.c PROPERTIES COMPILE_FLAGS -Wno-format-truncation)
 
 # Needed for coap headers in public builds, also.
 #
 # TODO: find a way to move this to a port header
 target_compile_definitions(${COMPONENT_LIB} PUBLIC WITH_POSIX)
 
-set_source_files_properties(
-    libcoap/src/debug.c
-    libcoap/src/pdu.c
-    PROPERTIES COMPILE_FLAGS
-    -Wno-write-strings)
-
-# Temporary suppress "fallthrough" warnings until they are fixed in libcoap repo
-set_source_files_properties(
-    libcoap/src/option.c
-    PROPERTIES COMPILE_FLAGS
-    -Wno-implicit-fallthrough)
-
-target_compile_definitions(${COMPONENT_LIB} PUBLIC -D WITH_POSIX)

components/coap/Makefile.projbuild

@@ -2,13 +2,13 @@
 # Component Makefile
 #
 
-COMPONENT_ADD_INCLUDEDIRS := port/include port/include/coap libcoap/include libcoap/include/coap
+COMPONENT_ADD_INCLUDEDIRS := port/include port/include/coap libcoap/include libcoap/include/coap2
 
-COMPONENT_OBJS = libcoap/src/address.o libcoap/src/async.o libcoap/src/block.o libcoap/src/coap_time.o libcoap/src/debug.o libcoap/src/encode.o libcoap/src/hashkey.o libcoap/src/mem.o libcoap/src/net.o libcoap/src/option.o libcoap/src/pdu.o libcoap/src/resource.o libcoap/src/str.o libcoap/src/subscribe.o libcoap/src/uri.o port/coap_io_socket.o
+COMPONENT_OBJS = libcoap/src/address.o libcoap/src/async.o libcoap/src/block.o libcoap/src/coap_event.o libcoap/src/coap_hashkey.o libcoap/src/coap_session.o libcoap/src/coap_time.o libcoap/src/coap_debug.o libcoap/src/encode.o libcoap/src/mem.o libcoap/src/net.o libcoap/src/option.o libcoap/src/pdu.o libcoap/src/resource.o libcoap/src/str.o libcoap/src/subscribe.o libcoap/src/uri.o libcoap/src/coap_notls.o port/coap_io.o
 
 COMPONENT_SRCDIRS := libcoap/src libcoap port
 
-libcoap/src/debug.o: CFLAGS += -Wno-write-strings
-libcoap/src/pdu.o: CFLAGS += -Wno-write-strings
-# Temporary suppress "fallthrough" warnings until they are fixed in libcoap repo
-libcoap/src/option.o: CFLAGS += -Wno-implicit-fallthrough
+COMPONENT_SUBMODULES += libcoap
+
+# Silence format truncation warning, until it is fixed upstream
+libcoap/src/coap_debug.o: CFLAGS += -Wno-format-truncation