[BUG]Compilation error of silabs-sensors in silabs_examples

[QingtianHoorii]

Description of the issue

I encountered a compilation error when trying to use the "sl_uart_log_output=true" option to enable the serial port logging feature provided by you. This error may be present in many of the sample routines.I believe this is a minor spelling mistake and I hope you can fix it.

FAILED: obj/third_party/connectedhomeip/examples/platform/silabs/efr32-common.syscalls_stubs.cpp.o
arm-none-eabi-g++ -MMD -MF obj/third_party/connectedhomeip/examples/platform/silabs/efr32-common.syscalls_stubs.cpp.o.d -march=armv8-m.main+dsp -mcpu=cortex-m33 -mabi=aapcs -mfpu=fpv5-sp-d16 -mfloat-abi=hard -mthumb -Og -g2 -fno-common -ffunction-sections -fdata-sections --specs=nosys.specs --specs=nano.specs -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -Wall -Werror -Wstack-usage=8192 -Wextra -Wshadow -Wunreachable-code -Wvla -Wformat -Wformat-nonliteral -Wformat-security -Wno-deprecated-declarations -Wno-missing-field-initializers -Wno-unknown-warning-option -Wno-unused-parameter -Wno-cast-function-type -Wno-psabi -Wno-maybe-uninitialized -fdiagnostics-color -fno-strict-aliasing -Wno-type-limits -fmacro-prefix-map=../third_party/connectedhomeip/= -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/plugin/security_manager/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/kit/common/bsp -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/board/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/driver/memlcd/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/driver/memlcd/src/ls013b7dh03 -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/driver/configuration_over_swo/inc/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/bootloader -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/bootloader/config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/bootloader/config/s2/btl_interface -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/bootloader/api -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/CMSIS/Core/Include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/CMSIS/RTOS2/Include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/common/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/common/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/gpiointerrupt/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/dmadrv/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/nvm3/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/rtcdrv/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emlib/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/halconfig/inc/hal-config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/peripheral/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/common -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/chip/efr32 -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/chip/efr32/rf/common/cortex -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/protocol/ieee802154 -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/plugin/pa-conversions -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/plugin/rail_util_pti -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/plugin/rail_util_rf_path -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/device_init/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/hfxo_manager/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/hfxo_manager/src -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/mpu/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/power_manager/inc/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/power_manager/src/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/sleeptimer/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/system/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/udelay/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/legacy_hal/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/token_manager/config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/token_manager/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/token_manager/test -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/token_manager/test/include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/token_manager/test/stack/config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/token_manager/test/stack/include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/middleware/glib -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/middleware/glib/config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/middleware/glib/glib -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/middleware/glib/dmd -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/base/hal/plugin/psstore -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/base/hal/plugin/antenna -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/protocol/bluetooth/inc/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/plugin/plugin-common/fem-control -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/silicon_labs/silabs_core/graphics -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/silicon_labs/silabs_core/memory_manager -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/mbedtls/include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/mbedtls/include/psa -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/mbedtls/library -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/sl_alt/include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/sl_protocol_crypto/src -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/sl_mbedtls_support/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/sl_mbedtls_support/config/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/sl_psa_driver/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/sl_psa_driver/inc/public -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/se_manager/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/security/sl_component/se_manager/src/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/freertos/cmsis/Include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/freertos/kernel/include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/driver/debug/inc -isystem../third_party/connectedhomeip/third_party/silabs/matter_support/matter/efr32/efr32mg24/BRD4187C/config -isystem../third_party/connectedhomeip/third_party/silabs/matter_support/matter/efr32/efr32mg24/BRD4187C/autogen -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/hal -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/hal/efr32 -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/driver/leddrv/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/driver/button/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/driver/mx25_flash_shutdown/inc/sl_mx25_flash_shutdown_usart -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/uartdrv/inc -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/uartdrv/config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/hardware/driver/memlcd/inc/memlcd_usart -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/Device/SiliconLabs/EFR32MG24/Include -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/chip/efr32/efr32xg2x -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/freertos/kernel/portable/GCC/ARM_CM33_NTZ/non_secure -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/plugin/pa-conversions/efr32xg24 -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/radio/rail_lib/plugin/pa-conversions/efr32xg24/config -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/service/device_init/config/s2/ -isystem../third_party/connectedhomeip/third_party/silabs/gecko_sdk/platform/emdrv/spidrv/inc -Wno-maybe-uninitialized -Wno-shadow -Wno-error=array-parameter -Wno-error=array-bounds -mcmse -Wno-format-nonliteral -std=gnu++14 -fno-rtti -Wnon-virtual-dtor -DOTA_PERIODIC_TIMEOUT=86400 -DDISPLAY_ENABLED -DQR_CODE_ENABLED -DSILABS_OTA_ENABLED -DCHIP_HAVE_CONFIG_H=1 -DMBEDTLS_CONFIG_FILE=\"efr32-chip-mbedtls-config.h\" -DMBEDTLS_PSA_CRYPTO_CONFIG_FILE=\"psa_crypto_config.h\" -D__STARTUP_CLEAR_BSS -DHARD_FAULT_LOG_ENABLE -DCORTEXM3_EFM32_MICRO -DSILABS_LOG_ENABLED=true -DNVM3_DEFAULT_NVM_SIZE=40960 -DNVM3_DEFAULT_MAX_OBJECT_SIZE=4092 -DKVS_MAX_ENTRIES=255 -DEFR32_OPENTHREAD_API -DPHY=EMBER_PHY_RAIL -DCORTEXM3 -DMICRO=EMBER_MICRO_CORTEXM3_EFR32 -DPLAT=EMBER_PLATFORM_CORTEXM3 -DEFR32MG24B220F1536IM48=1 -DBRD4187C=1 -DSL_SUPRESS_DEPRECATION_WARNINGS_SDK_3_1 -D__HEAP_SIZE=0 -DSL_CATALOG_FREERTOS_KERNEL_PRESENT=1 -DMBEDTLS_THREADING_C=1 -DMBEDTLS_THREADING_ALT=1 -DSL_THREADING_ALT=1 -DSL_COMPONENT_CATALOG_PRESENT=1 -DPLATFORM_HEADER=\"platform-header.h\" -DUSE_NVM3=1 -DSL_CATALOG_POWER_MANAGER_PRESENT -DSL_CATALOG_SLEEPTIMER_PRESENT -DSILABS_LOG_OUT_UART=1 -DSILABS_LOG_OUT_RTT=0 -DENABLE_WSTK_LEDS -DCHIP_DEVICE_CONFIG_THREAD_ENABLE_CLI=1 -DCONFIG_ENABLE_UART -DCONFIG_USE_EXTERNAL_FLASH -DEFR32MG24 -DEFR32_SERIES2_CONFIG4_MICRO -DCHIP_ADDRESS_RESOLVE_IMPL_INCLUDE_HEADER=\<lib/address_resolve/AddressResolve_DefaultImpl.h\> -DSL_SENSOR_TYPE=1 -DBLE_DEV_NAME=\"SL-OCC-SENSOR\" -DOPENTHREAD_PROJECT_CORE_CONFIG_FILE=\"OpenThreadConfig.h\" -DOPENTHREAD_CORE_CONFIG_PLATFORM_CHECK_FILE=\"openthread-core-efr32-config-check.h\" -DPACKAGE_NAME=\"OPENTHREAD\" -DPACKAGE_VERSION=\"1.0.0\" -DRADIO_CONFIG_DMP_SUPPORT=1 -DEFR32MG24B220F1536IM48 -I../third_party/connectedhomeip/examples/platform/silabs/efr32 -I../third_party/connectedhomeip/examples/platform/silabs/display -I../third_party/connectedhomeip/examples/common/QRCode/repo/c -I../third_party/connectedhomeip/src/include -I../third_party/connectedhomeip/src -Igen/include -I../third_party/connectedhomeip/zzz_generated/app-common -I../third_party/connectedhomeip/src/platform/silabs/efr32 -I../third_party/connectedhomeip/silabs_examples/silabs-sensors/efr32/include -I../third_party/connectedhomeip/src/lib -I../third_party/connectedhomeip/examples/platform/silabs -I../third_party/connectedhomeip/third_party/jlink/segger_rtt/RTT -Igen/include/RTT -I../third_party/connectedhomeip/third_party/nlassert/repo/include -I../third_party/connectedhomeip/third_party/nlio/repo/include -I../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/openthread/include -I../third_party/connectedhomeip/examples/providers -I../third_party/connectedhomeip/zzz_generated/lighting-app -Igen/third_party/connectedhomeip/silabs_examples/silabs-sensors/efr32/data_model -Igen/third_party/connectedhomeip/silabs_examples/silabs-sensors/efr32/data_model/zapgen -I../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/openthread/examples/platforms -I../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/openthread/src -I../third_party/connectedhomeip/third_party/silabs/gecko_sdk/util/third_party/openthread/src/core -I../third_party/connectedhomeip/examples/platform/silabs/efr32/project_include -I../third_party/connectedhomeip/examples/platform/efr32 -I../third_party/connectedhomeip/third_party/silabs/matter_support/matter/efr32/efr32mg24/BRD4187C -I../third_party/connectedhomeip/third_party/silabs/gecko_sdk/protocol/openthread/platform-abstraction/efr32 -c ../third_party/connectedhomeip/examples/platform/silabs/syscalls_stubs.cpp -o obj/third_party/connectedhomeip/examples/platform/silabs/efr32-common.syscalls_stubs.cpp.o
../third_party/connectedhomeip/examples/platform/silabs/syscalls_stubs.cpp: In function 'int _read(int, char*, int)':
../third_party/connectedhomeip/examples/platform/silabs/syscalls_stubs.cpp:177:12: error: expected primary-expression before '=' token
  177 |     return = uartConsoleRead(ptr, len);
      |            ^
At global scope:
cc1plus: note: unrecognized command-line option '-Wno-unknown-warning-option' may have been intended to silence earlier diagnostics
[18/598] c++ obj/third_party/connectedhomeip/zzz_generated/app-common/app-common/zap-generated/attributes/sensor_data_model.Accessors.cpp.o
ninja: build stopped: subcommand failed.

Steps to reproduce the issue

1.Activate Environment
2./silabs_examples/silabs-sensors/efr32
3.edit ./args.gni: add this option "sl_uart_log_output=true"
4.compile it with following:
 export SILABS_BOARD=BRD4187C 
 gn gen ./out  
 ninja  -C  ./out  
5.The error occurred.

Device type(s) and network topology

Matter over Thread
BRD4187C

Proposed solution(s)

Make the following modifications to the code：

--- a/examples/platform/silabs/syscalls_stubs.cpp
+++ b/examples/platform/silabs/syscalls_stubs.cpp
@@ -174,7 +174,7 @@ int __attribute__((weak)) _read(int file, char * ptr, int len)
 {
     (void) file;
 #if SILABS_LOG_OUT_UART
-    return = uartConsoleRead(ptr, len);
+    return uartConsoleRead(ptr, len);
 #else
     (void) ptr;
     (void) len;
~

SMG version

release_2.1.0-1.1

Protocol(s)

Thread

Hardware platform(s)

BRD4187C

Development platform(s)

No response

Captured data or logs

No response

[silabs-sebastien]

@QingtianHoorii Thanks for reporting this! We'll look at this shortly and I'll post an update here once available.

[silabs-sebastien]

@QingtianHoorii This issue was already fixed on 2023-06-11. You can view PR # 27187 here, which states:

Fix the redundant assignment equals sign, which causes compilation to fail.