esp32: extract component/btstack, depend on CONFIG_BLUEDROID_ENABLED=n, update README

port/esp32/Makefile

@@ -3,7 +3,8 @@
 # project subdirectory.
 #
 
-PROJECT_NAME := esp32_le_counter
+PROJECT_NAME := spp_and_le_streamer
+EXTRA_COMPONENT_DIRS := components
 
 include $(IDF_PATH)/make/project.mk
 

port/esp32/README.md

@@ -4,7 +4,8 @@ Status: Initial port. Only SPP + LE Throughput example provided.
 
 ## Setup
 
-- Follow [Espressif IoT Development Framework (IDF) setup](https://github.com/espressif/esp-idf) to install xtensa toolchain and esp-idf.
+- Follow [Espressif IoT Development Framework (IDF) setup](https://github.com/espressif/esp-idf) to install xtensa toolchain.
+- Checkout our [esp-idf fork](https://github.com/mringwal/esp-idf) and switch to branch 'support-alternative-bluetooth-stack' to allow alternative Bluetooth stack and make IDF_PATH point to it.
 - In port/esp32, configure serial port for firmware upload as described before
 	
 ## Usage

port/esp32/components/btstack/component.mk

@@ -0,0 +1,31 @@
+#
+# Main component makefile.
+#
+# This Makefile can be left empty. By default, it will take the sources in the 
+# src/ directory, compile them and link them into lib(subdirectory_name).a 
+# in the build directory. This behaviour is entirely configurable,
+# please read the ESP-IDF documents if you need to do this.
+#
+BTSTACK_ROOT := ../../../..
+
+COMPONENT_ADD_INCLUDEDIRS := \
+	${BTSTACK_ROOT}/3rd-party/bluedroid/decoder/include \
+	${BTSTACK_ROOT}/3rd-party/bluedroid/encoder/include \
+	$(BTSTACK_ROOT)/src/classic \
+	$(BTSTACK_ROOT)/src/ble/gatt-service \
+	$(BTSTACK_ROOT)/src/ble \
+	$(BTSTACK_ROOT)/src/classic \
+	$(BTSTACK_ROOT)/src \
+	$(BTSTACK_ROOT)/platform/freertos \
+	include \
+
+COMPONENT_SRCDIRS := \
+	$(BTSTACK_ROOT)/src/ble/gatt-service \
+	$(BTSTACK_ROOT)/src/ble \
+	$(BTSTACK_ROOT)/src/classic \
+	$(BTSTACK_ROOT)/src/ \
+	$(BTSTACK_ROOT)/platform/freertos \
+	. \
+
+CFLAGS += -Wno-format
+

port/esp32/main/component.mk

@@ -6,25 +6,5 @@
 # in the build directory. This behaviour is entirely configurable,
 # please read the ESP-IDF documents if you need to do this.
 #
-BTSTACK_ROOT := ../../..
-
-COMPONENT_ADD_INCLUDEDIRS := \
-	$(BTSTACK_ROOT)/src/ble/gatt-service \
-	$(BTSTACK_ROOT)/src/ble \
-	$(BTSTACK_ROOT)/src/classic \
-	$(BTSTACK_ROOT)/src \
-	$(BTSTACK_ROOT)/platform/freertos \
-	${BTSTACK_ROOT}/3rd-party/bluedroid/decoder/include \
-	${BTSTACK_ROOT}/3rd-party/bluedroid/encoder/include \
-	. \
-
-COMPONENT_SRCDIRS := \
-	$(BTSTACK_ROOT)/src/ble/gatt-service \
-	$(BTSTACK_ROOT)/src/ble \
-	$(BTSTACK_ROOT)/src/classic \
-	$(BTSTACK_ROOT)/src/ \
-	$(BTSTACK_ROOT)/platform/freertos \
-	. \
-
 CFLAGS += -Wno-format
 

port/esp32/sdkconfig

@@ -90,6 +90,7 @@ CONFIG_OPTIMIZATION_LEVEL_DEBUG=y
 # Component config
 #
 CONFIG_BT_ENABLED=y
+CONFIG_BLUEDROID_ENABLED=y
 CONFIG_BTC_TASK_STACK_SIZE=3072
 # CONFIG_BLUEDROID_MEM_DEBUG is not set
 # CONFIG_BT_DRAM_RELEASE is not set