feat(openthread): rcp size optimization configurations

examples/openthread/ot_br/main/idf_component.yml

@@ -1,7 +1,7 @@
 ## IDF Component Manager Manifest File
 dependencies:
   espressif/esp_ot_cli_extension:
-    version: "~0.4.0"
+    version: "~1.0.0"
   espressif/mdns: "^1.0.3"
   ## Required IDF version
   idf:

examples/openthread/ot_br/partitions.csv

@@ -2,4 +2,4 @@
 # Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
 nvs,        data, nvs,      0x9000,  0x6000,
 phy_init,   data, phy,      0xf000,  0x1000,
-factory,    app,  factory,  0x10000, 1600K,
+factory,    app,  factory,  0x10000, 1700K,

examples/openthread/ot_rcp/README.md

@@ -19,6 +19,34 @@ To run this example, a board with IEEE 802.15.4 module (for example ESP32-H2) is
 
 The default communication interface is port 0 of ESP32-H2 UART running at 460800 baud, change the configuration in [esp_ot_config.h](main/esp_ot_config.h) if you want to use another interface or need different communication parameters.
 
+### RCP Size Optimization Configuration
+
+To optimize the size of the RCP firmware, the following configurations are enabled by default:
+
+```
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=y
+CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y
+CONFIG_COMPILER_SAVE_RESTORE_LIBCALLS=y
+CONFIG_ESP_ERR_TO_NAME_LOOKUP=n
+CONFIG_ESP_SYSTEM_PANIC_SILENT_REBOOT=y
+CONFIG_LOG_DEFAULT_LEVEL_NONE=y
+CONFIG_NEWLIB_NANO_FORMAT=y
+CONFIG_OPENTHREAD_LOG_LEVEL_DYNAMIC=n
+CONFIG_OPENTHREAD_LOG_LEVEL_NONE=y
+```
+Configure them via `idf.py menuconfig` if you need.
+
+The firmware size are as follows (reference value):
+
+```
+                                Before Optimization     After Optimization
+
+esp_ot_rcp.bin for esp32h2          314KB                   184KB
+
+esp_ot_rcp.bin for esp32c6          299KB                   208kb
+```
+
 ### Build and Flash
 
 Build the project and flash it to the board:

examples/openthread/ot_rcp/sdkconfig.defaults

@@ -19,12 +19,13 @@ CONFIG_PARTITION_TABLE_MD5=y
 #
 CONFIG_OPENTHREAD_ENABLED=y
 CONFIG_OPENTHREAD_RADIO=y
-CONFIG_OPENTHREAD_DIAG=y
+CONFIG_OPENTHREAD_DIAG=n
 CONFIG_OPENTHREAD_COMMISSIONER=n
 CONFIG_OPENTHREAD_JOINER=n
 CONFIG_OPENTHREAD_BORDER_ROUTER=n
 CONFIG_OPENTHREAD_CLI=n
 CONFIG_OPENTHREAD_SRP_CLIENT=n
+CONFIG_OPENTHREAD_DNS_CLIENT=n
 # end of OpenThread
 
 
@@ -34,3 +35,18 @@ CONFIG_OPENTHREAD_SRP_CLIENT=n
 CONFIG_LOG_BOOTLOADER_LEVEL_ERROR=y
 CONFIG_LOG_BOOTLOADER_LEVEL_INFO=n
 # End of deprecated options
+
+
+#
+# Configurations for optimizing the size of ot_rcp firmware
+#
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=y
+CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y
+CONFIG_COMPILER_SAVE_RESTORE_LIBCALLS=y
+CONFIG_ESP_ERR_TO_NAME_LOOKUP=n
+CONFIG_ESP_SYSTEM_PANIC_SILENT_REBOOT=y
+CONFIG_LOG_DEFAULT_LEVEL_NONE=y
+CONFIG_NEWLIB_NANO_FORMAT=y
+CONFIG_OPENTHREAD_LOG_LEVEL_DYNAMIC=n
+CONFIG_OPENTHREAD_LOG_LEVEL_NONE=y