RE: Enabling LDO or DCDC on nrf connect sdk

Håkon Alseth — Tue, 02 May 2023 10:25:14 GMT

Hi,

If your board does not have a kconfig entry for this, then it will not be available:

https://github.com/nrfconnect/sdk-zephyr/blob/v3.2.99-ncs2/boards/arm/nrf52dk_nrf52832/Kconfig#L6-L10

You can verify this by checking the build/zephyr/.config file and search for symbol "SOC_DCDC_NRF52X". This should not be selected in your case.

You'll still need this set:

[quote user="mohamed.elsabagh"]CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y[/quote]

Kind regards,

Håkon

RE: Enabling LDO or DCDC on nrf connect sdk

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Tue, 02 May 2023 10:19:04 GMT

I am using a custom board of nrf52832 here is my proj.conf

# Config PINCTR

CONFIG_PINCTRL=y

# Config GPIO

CONFIG_GPIO=y

# Config logger

CONFIG_LOG=y

# CONFIG_SERIAL=y

CONFIG_CONSOLE=y

CONFIG_LOG_BACKEND_SHOW_COLOR=y

CONFIG_LOG_MODE_IMMEDIATE=y

# Use console with RTT

CONFIG_USE_SEGGER_RTT=y

CONFIG_RTT_CONSOLE=y

CONFIG_LOG_BACKEND_RTT=y

# comment if RTT console not used

CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=2048

# Use console with UART

# CONFIG_UART_CONSOLE=y

# CONFIG_LOG_BACKEND_UART=y

CONFIG_DEBUG_THREAD_INFO=y

CONFIG_DEBUG_OPTIMIZATIONS=n

CONFIG_NO_OPTIMIZATIONS=n

# Config PWM

CONFIG_PWM=y

CONFIG_PWM_NRFX=y

CONFIG_PWM_LOG_LEVEL_DBG=n

# Config PWM for LEDs and Buzzer

CONFIG_NRFX_PWM0=y

CONFIG_NRFX_PWM1=y

# Config SPI

CONFIG_SPI=y

CONFIG_SPI_NRFX=y

# Config NVS/Flash

CONFIG_NVS=y

CONFIG_FLASH=y

CONFIG_FLASH_PAGE_LAYOUT=y

CONFIG_FLASH_MAP=y

CONFIG_SETTINGS=y

CONFIG_MPU_ALLOW_FLASH_WRITE=y

# NVS logs

CONFIG_NVS_LOG_LEVEL_DBG=n

CONFIG_NVS_LOG_LEVEL_OFF=n

# Config Stack

CONFIG_MAIN_STACK_SIZE=4096

CONFIG_HEAP_MEM_POOL_SIZE=4096

# Config Power Management

CONFIG_PM_CPU_OPS=y

CONFIG_PM_DEVICE=y

CONFIG_PM=y

CONFIG_PM_DEVICE_RUNTIME=y

CONFIG_PM_STATS=y

CONFIG_STATS=y

CONFIG_MINIMAL_LIBC=y

CONFIG_NEWLIB_LIBC=y

CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y

# Config Bluetooth

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096

CONFIG_BT=y

CONFIG_BT_DEBUG_LOG=n

CONFIG_BT_SMP=y

CONFIG_BT_SIGNING=y

CONFIG_BT_PERIPHERAL=y

CONFIG_BT_DIS=y

CONFIG_BT_ATT_PREPARE_COUNT=5

CONFIG_BT_PRIVACY=y # setting to y will use random address, while setting to n will use fixed public address

# CONFIG_BT_DIS_MANUF="DK"

CONFIG_BT_DEVICE_NAME="DK"

# CONFIG_BT_DEVICE_APPEARANCE=833

CONFIG_BT_DEVICE_NAME_DYNAMIC=y

CONFIG_BT_DEVICE_NAME_MAX=5

CONFIG_BT_SETTINGS=y

CONFIG_BT_CTLR_TX_PWR_0=y

# CONFIG_SETTINGS_RUNTIME=y #might not be required

# CONFIG_SETTINGS_NONE=y #might not be required

CONFIG_BT_GATT_SERVICE_CHANGED=y

CONFIG_BT_MAX_CONN=1

# CONFIG_BT_DEBUG_HCI_CORE=n

# CONFIG_BT_DEBUG_NONE=y

# CONFIG_BT_FIXED_PASSKEY=y

CONFIG_BT_BONDABLE=y

# CONFIG_BT_BONDING_REQUIRED=n

# CONFIG_BT_CTLR_PHY_CODED=y

CONFIG_BT_EXT_ADV=y

CONFIG_BT_USER_PHY_UPDATE=y

CONFIG_BT_BUF_ACL_RX_SIZE=256

CONFIG_BT_L2CAP_TX_MTU=252

CONFIG_BT_KEYS_OVERWRITE_OLDEST=y

# Config Date Time

CONFIG_DATE_TIME=y

# CONFIG_DATE_TIME_MODEM=n

CONFIG_DATE_TIME_NTP=n

CONFIG_DATE_TIME_UPDATE_INTERVAL_SECONDS=0

CONFIG_DATE_TIME_TOO_OLD_SECONDS=0

# Enable System reboot functionality

CONFIG_REBOOT=y

# Config ADC

CONFIG_ADC=y

# Config NFC

# CONFIG_NFC_T4T_NRFXLIB=y

# CONFIG_NFC_T2T_NRFXLIB=y

# CONFIG_NFC_NDEF=y

# CONFIG_NFC_NDEF_MSG=y

# CONFIG_NFC_NDEF_RECORD=y

# CONFIG_NFC_NDEF_TEXT_RECORD=y

# CONFIG_NFC_NDEF_URI_REC=y

# CONFIG_NFC_NDEF_URI_MSG=y

# CONFIG_WATCHDOG=y

# Enable mcumgr.

# CONFIG_MCUMGR=y

# Ensure an MCUboot-compatible binary is generated.

# CONFIG_BOOTLOADER_MCUBOOT=y

# Enable the Bluetooth (unauthenticated) and shell mcumgr transports.

# CONFIG_MCUMGR_SMP_BT=y

# CONFIG_MCUMGR_SMP_BT_AUTHEN=n

# Enable most core commands.

# CONFIG_MCUMGR_CMD_IMG_MGMT=y

# CONFIG_MCUMGR_CMD_OS_MGMT=y

CONFIG_TIMESLICING=y

# CONFIG_SOC_SERIES_NRF52X=y

# CONFIG_SOC_NRF52832_QFAA=y

# CONFIG_ARM=y

# CONFIG_ARM_MPU=n

# CONFIG_BOARD_ENABLE_DCDC=n

# CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y

RE: Enabling LDO or DCDC on nrf connect sdk

Håkon Alseth — Tue, 02 May 2023 10:17:34 GMT

Which board (ex: nrf52dk_nrf52832) are you using?

This shall be present in ncs v2.3.0: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.3.0/kconfig/index.html#CONFIG_BOARD_ENABLE_DCDC

Kind regards,

Håkon

RE: Enabling LDO or DCDC on nrf connect sdk

MOHAMED AHMED ALI MAHMOUD ELSABAGH — Tue, 02 May 2023 08:57:12 GMT

I have tried ```CONFIG_BOARD_ENABLE_DCDC=n``` but it is giving error undefined symbol CONFIG_BOARD_ENABLE_DCDC, I am using sdk ver 2.3.0

RE: Enabling LDO or DCDC on nrf connect sdk

Håkon Alseth — Tue, 02 May 2023 08:21:47 GMT

Hi,

For the nRF52832, the DCDC is disabled by setting:

CONFIG_BOARD_ENABLE_DCDC=n

Please note that the default setting is to enable both DCDC and external 32k. If your design does not include an external 32k source, you can use the internal 32k RC oscillator instead by adding this:

CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y

Kind regards,

Håkon