Separate the compiler config options, enable it if is_debug=false

examples/temperature-measurement-app/esp32/Makefile

@@ -32,6 +32,10 @@ CFLAGS += -Os -DLWIP_IPV6_SCOPES=0
 
 top: all flashing_script
 
+ifeq ($(is_debug),false)
+export SDKCONFIG_DEFAULTS = sdkconfig.optimize.defaults
+endif
+
 include $(IDF_PATH)/make/project.mk
 
 FLASHING_SCRIPT=$(BUILD_DIR_BASE)/$(PROJECT_NAME).flash.py

examples/temperature-measurement-app/esp32/README.md

@@ -1,3 +1,12 @@
 # Temperature Sensor Example
 
+### Temperature-measurement-app optimization
+Optimize the temperature-measurement-app to use less RAM and Flash.
+
+To enable this option set is_debug=false from command-line
+
+```
+idf make build flash monitor is_debug=false
+```
+
 // TODO Fill this out

examples/temperature-measurement-app/esp32/sdkconfig.defaults

@@ -38,9 +38,6 @@ CONFIG_LWIP_IPV6_AUTOCONFIG=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 
-# Compiler options
-CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE=y
-
 # Bluetooth controller
 CONFIG_BTDM_CTRL_BLE_MAX_CONN=1
 CONFIG_BTDM_CTRL_BLE_MAX_CONN_EFF=1

examples/temperature-measurement-app/esp32/sdkconfig.optimize.defaults

@@ -0,0 +1,75 @@
+#
+#    Copyright (c) 2020 Project CHIP Authors
+#    Copyright (c) 2018 Nest Labs, Inc.
+#    All rights reserved.
+#
+#    Licensed 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.
+#
+#    Description:
+#      Some useful defaults for the optimizing temperature-measurement-app configuration.
+#
+
+
+# Default to 921600 baud when flashing and monitoring device
+CONFIG_ESPTOOLPY_BAUD_921600B=y
+CONFIG_ESPTOOLPY_BAUD=921600
+CONFIG_ESPTOOLPY_COMPRESSED=y
+CONFIG_ESPTOOLPY_MONITOR_BAUD_115200B=y
+CONFIG_ESPTOOLPY_MONITOR_BAUD=115200
+
+#enable BT
+CONFIG_BT_ENABLED=y
+CONFIG_BT_NIMBLE_ENABLED=y
+
+#enable lwip ipv6 autoconfig
+CONFIG_LWIP_IPV6_AUTOCONFIG=y
+
+# Use a custom partition table
+CONFIG_PARTITION_TABLE_CUSTOM=y
+CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
+
+# Compiler options
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE=y
+
+# Bluetooth controller
+CONFIG_BTDM_CTRL_BLE_MAX_CONN=1
+CONFIG_BTDM_CTRL_BLE_MAX_CONN_EFF=1
+
+# NimBLE Options 
+CONFIG_BT_NIMBLE_MAX_CONNECTIONS=1
+
+# Wi-Fi
+CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM=4
+CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM=8
+CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM=16
+
+# FreeRTOS
+CONFIG_FREERTOS_UNICORE=y
+
+# Log output
+CONFIG_LOG_DEFAULT_LEVEL_NONE=y
+
+# LWIP
+CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=16
+
+# TCP
+CONFIG_LWIP_TCP_SYNMAXRTX=6
+
+# Compatibility options
+CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED=y
+CONFIG_BTDM_CONTROLLER_BLE_MAX_CONN=1
+CONFIG_BTDM_CONTROLLER_BLE_MAX_CONN_EFF=1
+CONFIG_NIMBLE_MAX_CONNECTIONS=1
+CONFIG_TCPIP_RECVMBOX_SIZE=16
+CONFIG_TCP_SYNMAXRTX=6

examples/temperature-measurement-app/esp32/sdkconfig_devkit.defaults

@@ -39,9 +39,6 @@ CONFIG_LWIP_IPV6_AUTOCONFIG=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 
-# Compiler options
-CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE=y
-
 # Bluetooth controller
 CONFIG_BTDM_CTRL_BLE_MAX_CONN=1
 CONFIG_BTDM_CTRL_BLE_MAX_CONN_EFF=1

examples/temperature-measurement-app/esp32/sdkconfig_m5stack.defaults

@@ -39,9 +39,6 @@ CONFIG_LWIP_IPV6_AUTOCONFIG=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 
-# Compiler options
-CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE=y
-
 # Bluetooth controller
 CONFIG_BTDM_CTRL_BLE_MAX_CONN=1
 CONFIG_BTDM_CTRL_BLE_MAX_CONN_EFF=1