Hi All!
I am using Vscode studio, NCS SDK 2.0.2, and a peripheral Uart example. I need some guidelines regarding SRAM size reduction for nrf52820. Without adding my own code into this example SRAM size is
SRAM: 32417 B 32 KB 98.93%
my prj_minimal.conf file is
# # Copyright (c) 2021 Nordic Semiconductor # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # # Enable the UART driver CONFIG_UART_ASYNC_API=y CONFIG_NRFX_UARTE0=y CONFIG_SERIAL=y CONFIG_HEAP_MEM_POOL_SIZE=2048 CONFIG_BT=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_DEVICE_NAME="Nordic_UART_Service" CONFIG_BT_DEVICE_APPEARANCE=833 CONFIG_BT_MAX_CONN=1 CONFIG_BT_MAX_PAIRED=1 # Enable the NUS service CONFIG_BT_NUS=y # Enable bonding CONFIG_BT_SETTINGS=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_NVS=y CONFIG_SETTINGS=y # Enable DK LED and Buttons library CONFIG_DK_LIBRARY=y # Drivers and peripherals CONFIG_I2C=n CONFIG_WATCHDOG=n CONFIG_PINMUX=n CONFIG_SPI=n CONFIG_GPIO=n # Power management CONFIG_PM=n # Interrupts CONFIG_DYNAMIC_INTERRUPTS=n CONFIG_IRQ_OFFLOAD=n # Memory protection CONFIG_THREAD_STACK_INFO=n CONFIG_THREAD_CUSTOM_DATA=n CONFIG_FPU=n # Boot CONFIG_BOOT_BANNER=n CONFIG_BOOT_DELAY=0 # Console CONFIG_CONSOLE=n CONFIG_UART_CONSOLE=n CONFIG_STDOUT_CONSOLE=n CONFIG_PRINTK=n CONFIG_EARLY_CONSOLE=n # Build CONFIG_SIZE_OPTIMIZATIONS=y # ARM CONFIG_ARM_MPU=n # In order to correctly tune the stack sizes for the threads the following # Configurations can enabled to print the current use: #CONFIG_THREAD_NAME=y #CONFIG_THREAD_ANALYZER=y #CONFIG_THREAD_ANALYZER_AUTO=y #CONFIG_THREAD_ANALYZER_RUN_UNLOCKED=y #CONFIG_THREAD_ANALYZER_USE_PRINTK=y #CONFIG_CONSOLE=y #CONFIG_UART_CONSOLE=y #CONFIG_SERIAL=y #CONFIG_PRINTK=y # Example output of thread analyzer #SDC RX : unused 800 usage 224 / 1024 (21 %) #BT ECC : unused 216 usage 888 / 1104 (80 %) #BT RX : unused 1736 usage 464 / 2200 (21 %) #BT TX : unused 1008 usage 528 / 1536 (34 %) #ble_write_thread_id : unused 688 usage 336 / 1024 (32 %) #sysworkq : unused 1912 usage 136 / 2048 (6 %) #MPSL signal : unused 928 usage 96 / 1024 (9 %) #idle 00 : unused 224 usage 96 / 320 (30 %) #main : unused 568 usage 456 / 1024 (44 %) CONFIG_BT_CTLR_SDC_RX_STACK_SIZE=324 CONFIG_BT_RX_STACK_SIZE=1024 CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y CONFIG_BT_HCI_TX_STACK_SIZE=640 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512 CONFIG_MPSL_WORK_STACK_SIZE=256 CONFIG_MAIN_STACK_SIZE=640 CONFIG_IDLE_STACK_SIZE=128 CONFIG_ISR_STACK_SIZE=1024 CONFIG_BT_NUS_THREAD_STACK_SIZE=512 # Disable features not needed CONFIG_TIMESLICING=n CONFIG_MINIMAL_LIBC_MALLOC=n CONFIG_LOG=n CONFIG_ASSERT=n # Disable Bluetooth features not needed CONFIG_BT_DEBUG_NONE=y CONFIG_BT_ASSERT=n CONFIG_BT_DATA_LEN_UPDATE=n CONFIG_BT_PHY_UPDATE=n CONFIG_BT_GATT_CACHING=n CONFIG_BT_GATT_SERVICE_CHANGED=n CONFIG_BT_GAP_PERIPHERAL_PREF_PARAMS=n CONFIG_BT_SETTINGS_CCC_LAZY_LOADING=y CONFIG_BT_HCI_VS_EXT=n # Disable Bluetooth controller features not needed CONFIG_BT_CTLR_PRIVACY=n CONFIG_BT_CTLR_PHY_2M=n # Reduce Bluetooth buffers CONFIG_BT_BUF_EVT_DISCARDABLE_COUNT=1 CONFIG_BT_BUF_EVT_DISCARDABLE_SIZE=43 CONFIG_BT_BUF_EVT_RX_COUNT=2 CONFIG_BT_CONN_TX_MAX=2 CONFIG_BT_L2CAP_TX_BUF_COUNT=2 CONFIG_BT_CTLR_RX_BUFFERS=1 CONFIG_BT_BUF_ACL_TX_COUNT=3 CONFIG_BT_BUF_ACL_TX_SIZE=27
my prj.conf file is
# # Copyright (c) 2018 Nordic Semiconductor # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # CONFIG_I2C=y # Enable the UART driver CONFIG_UART_ASYNC_API=y CONFIG_NRFX_UARTE0=y CONFIG_SERIAL=y CONFIG_GPIO=y # Make sure printk is printing to the UART console CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y CONFIG_HEAP_MEM_POOL_SIZE=2048 CONFIG_BT=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_DEVICE_NAME="Nordic_UART_Service" CONFIG_BT_DEVICE_APPEARANCE=833 CONFIG_BT_MAX_CONN=1 CONFIG_BT_MAX_PAIRED=1 # Enable the NUS service CONFIG_BT_NUS=y # Enable bonding CONFIG_BT_SETTINGS=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_NVS=y CONFIG_SETTINGS=y # Enable DK LED and Buttons library CONFIG_DK_LIBRARY=y # This example requires more workqueue stack CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048 # Config logger CONFIG_LOG=y CONFIG_USE_SEGGER_RTT=y CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n CONFIG_ASSERT=y # i added these 3 lines from child image of coded phy uart pheripheral CONFIG_BT_EXT_ADV=y CONFIG_BT_CTLR_ADV_EXT=y CONFIG_BT_CTLR_PHY_CODED=y #CONFIG_BT_USER_PHY_UPDATE=y
When I disabled the # Config logger part then code size was reduced to 3732 B . I need to reduce it at least 10 - 15kb
Thanks in advance!
Best Regards,
