Hi,
I’m working on enabling the asynchronous API on UART1 in the nRF Cloud Multi-Service sample for the nRF9151. Despite setting the necessary configurations, when I call uart_callback_set() for UART1, it returns -ENOSYS, which indicates that the device does not support the asynchronous API.
This is my prj.conf
# # Copyright (c) 2022 Nordic Semiconductor ASA # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # # Log level # For more verbose and detailed log output, set the log level to # CONFIG_MULTI_SERVICE_LOG_LEVEL_DBG=y instead. CONFIG_MULTI_SERVICE_LOG_LEVEL_INF=y # General config CONFIG_EVENTS=y CONFIG_PICOLIBC_IO_FLOAT=y CONFIG_RESET_ON_FATAL_ERROR=y CONFIG_NCS_SAMPLES_DEFAULTS=y # LED indication # Uncomment these to minimize LED state indication when power savings are necessary # CONFIG_LED_VERBOSE_INDICATION=n # CONFIG_LED_CONTINUOUS_INDICATION=n # Or, uncomment this to completely disable LED state indication # CONFIG_LED_INDICATION_DISABLED=y # Improved Logging # CONFIG_LOG_MODE_DEFERRED allows logging from multiple threads simultaneously without creating # splintered log entries, at the cost of needing a buffer for storing logs. CONFIG_LOG_MODE_DEFERRED=y # CONFIG_LOG_BUFFER_SIZE is the aforementioned buffer. A size of 4096 bytes is useful for debugging # and prototyping, but is probably more than necessary for production-ready firmware. CONFIG_LOG_BUFFER_SIZE=4096 # Heap and stacks # Extended AT host/monitor stack/heap sizes since some nrf_cloud credentials are longer than 1024 bytes. CONFIG_AT_MONITOR_HEAP_SIZE=2048 CONFIG_AT_HOST_STACK_SIZE=2048 # Extended memory heap size needed both for PGPS and for encoding JSON-based nRF Cloud Device Messages. CONFIG_HEAP_MEM_POOL_SIZE=19000 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096 # Enable Networking and Connection Manager. CONFIG_NETWORKING=y CONFIG_NET_SOCKETS=y CONFIG_NET_SOCKETS_OFFLOAD=y CONFIG_NET_MGMT_EVENT_STACK_SIZE=2048 CONFIG_NET_CONNECTION_MANAGER_MONITOR_STACK_SIZE=1024 CONFIG_MAIN_STACK_SIZE=2048 # Enable LTE Connectivity using Connection Manager CONFIG_NET_IPV4=y CONFIG_NET_IPV6=y CONFIG_NET_IPV6_NBR_CACHE=n CONFIG_NET_IPV6_MLD=n CONFIG_NET_CONNECTION_MANAGER=y CONFIG_NRF_MODEM_LIB_NET_IF=y CONFIG_NRF_MODEM_LIB_NET_IF_AUTO_DOWN=y CONFIG_NRF_MODEM_LIB_NET_IF_DOWN_DEFAULT_LTE_DISCONNECT=y # Enable power savings mode CONFIG_LTE_PSM_REQ=y # Set the PSM Requested Active Time to 20 seconds CONFIG_LTE_PSM_REQ_RAT="00001010" # Modem library CONFIG_NRF_MODEM_LIB=y # AT commands interface CONFIG_UART_INTERRUPT_DRIVEN=y CONFIG_AT_HOST_LIBRARY=y # nRF Cloud CONFIG_NRF_CLOUD_MQTT=y # This also enables FOTA by implicitly setting CONFIG_NRF_CLOUD_FOTA=y # MQTT CONFIG_MQTT_KEEPALIVE=120 # MCUBOOT - Needed by FOTA CONFIG_BOOTLOADER_MCUBOOT=y CONFIG_IMG_MANAGER=y CONFIG_MCUBOOT_IMG_MANAGER=y CONFIG_STREAM_FLASH_ERASE=y # Location Services configuration CONFIG_LOCATION=y CONFIG_LOCATION_METHOD_GNSS=y CONFIG_LOCATION_METHOD_CELLULAR=y CONFIG_NRF_CLOUD_AGNSS=y CONFIG_NRF_CLOUD_LOCATION=y CONFIG_MODEM_INFO=y CONFIG_MODEM_INFO_ADD_NETWORK=y CONFIG_NRF_CLOUD_PGPS=y CONFIG_NRF_CLOUD_PGPS_REPLACEMENT_THRESHOLD=4 CONFIG_NRF_CLOUD_PGPS_REQUEST_UPON_INIT=y # Date Time lib - Used by PGPS and main application CONFIG_DATE_TIME=y # LTE link control - used by PGPS and main application CONFIG_LTE_LINK_CONTROL=y # Settings - used by nRF Cloud library and PGPS CONFIG_SETTINGS=y CONFIG_SETTINGS_FCB=y CONFIG_FCB=y # Download Client - used by FOTA and PGPS CONFIG_DOWNLOAD_CLIENT=y CONFIG_DOWNLOAD_CLIENT_HTTP_FRAG_SIZE_1024=y CONFIG_DOWNLOAD_CLIENT_STACK_SIZE=4096 CONFIG_DOWNLOAD_CLIENT_BUF_SIZE=2300 CONFIG_DOWNLOAD_CLIENT_MAX_HOSTNAME_SIZE=128 # Flash - Used by FOTA and PGPS CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_STREAM_FLASH=y CONFIG_MPU_ALLOW_FLASH_WRITE=y CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=n CONFIG_NRF_CLOUD_ALERT=y CONFIG_NRF_CLOUD_LOG_DIRECT=y CONFIG_NRF_CLOUD_LOG_OUTPUT_LEVEL=3 # On initial connection to the cloud, add info sections to the shadow CONFIG_NRF_CLOUD_SEND_DEVICE_STATUS=y CONFIG_NRF_CLOUD_SEND_DEVICE_STATUS_NETWORK=y CONFIG_NRF_CLOUD_SEND_DEVICE_STATUS_SIM=y CONFIG_NRF_CLOUD_SEND_SERVICE_INFO_FOTA=y CONFIG_NRF_CLOUD_SEND_SERVICE_INFO_UI=y CONFIG_NRF_CLOUD_CLIENT_ID_SRC_IMEI=y CONFIG_NRF_CLOUD_CLIENT_ID_PREFIX="nrf-" CONFIG_NRF_CLOUD_IPV6=y # disable this for US CONFIG_LTE_NETWORK_MODE_NBIOT_GPS=y # use LTE-M for US CONFIG_AT_CMD_REQUESTS=n CONFIG_TFM_SECURE_UART=n CONFIG_TFM_LOG_LEVEL_SILENCE=y CONFIG_UART_USE_RUNTIME_CONFIGURE=y CONFIG_LOCATION_TRACKING_SAMPLE_INTERVAL_SECONDS=300 CONFIG_UART_ASYNC_API=y CONFIG_LOCATION_REQUEST_DEFAULT_TIMEOUT=60000 CONFIG_LOCATION_DATA_DETAILS=y
and this is my overlay file.
&uart1 {
status = "okay";
};
