Hello everyone,
I've successfully implemented the SLM example on the NRF9160, and it's functioning properly. Now, I'm attempting to send AT commands to the modem using my Nucleo board. I've disabled hardware flow control in the Nucleo configuration as well as in the SLM example configuration. Additionally, I've added the following code to the interrupt handler of the Nucleo board. While I can observe "Ready" on the RX of the Nucleo board, I'm not receiving any replies when I send AT\r\n to the modem. Could someone please assist me in resolving this issue?
Overlay:
/*
* Copyright (c) 2021 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
*/
/ {
chosen {
ncs,slm-uart = &uart2;
};
};
/ {
chosen {
ncs,slm-uart = &uart2;
};
};
&uart0 {
status = "disabled";
hw-flow-control;
};
&uart2 {
compatible = "nordic,nrf-uarte";
current-speed = <115200>;
status = "okay";
//hw-flow-control;
pinctrl-0 = <&uart2_default_alt>;
pinctrl-1 = <&uart2_sleep_alt>;
pinctrl-names = "default", "sleep";
};
&pinctrl {
uart2_default_alt: uart2_default_alt {
group1 {
psels = <NRF_PSEL(UART_RX, 0, 11)>;
bias-pull-up;
};
group2 {
psels = <NRF_PSEL(UART_TX, 0, 10)>,
<NRF_PSEL(UART_RTS, 0, 12)>,
<NRF_PSEL(UART_CTS, 0, 13)>;
};
};
uart2_sleep_alt: uart2_sleep_alt {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 10)>,
<NRF_PSEL(UART_RX, 0, 11)>,
<NRF_PSEL(UART_RTS, 0, 12)>,
<NRF_PSEL(UART_CTS, 0, 13)>;
low-power-enable;
};
};
};
&spi3 {
status = "disabled";
};
&i2c2 {
status = "disabled";
};
prg config:
# # Copyright (c) 2020 Nordic Semiconductor ASA # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # # General config CONFIG_LOG=y CONFIG_LOG_DEFAULT_LEVEL=3 CONFIG_STACK_SENTINEL=y CONFIG_PICOLIBC_IO_FLOAT=y CONFIG_RING_BUFFER=y # Segger RTT CONFIG_USE_SEGGER_RTT=y # Where console messages (printk) are output. # By itself, SLM does not output any. CONFIG_RTT_CONSOLE=y CONFIG_UART_CONSOLE=n # Where SLM logs are output. CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n # Network CONFIG_NETWORKING=y CONFIG_NET_SOCKETS=y CONFIG_NET_NATIVE=n # Modem library CONFIG_NRF_MODEM_LIB=y # Align the max FD entry to NRF_MODEM_MAX_SOCKET_COUNT(8) CONFIG_POSIX_MAX_FDS=8 # Handle modem fault CONFIG_NRF_MODEM_LIB_ON_FAULT_APPLICATION_SPECIFIC=y # Use GPIO CONFIG_GPIO=y CONFIG_GPIO_NRFX=y # UART interface CONFIG_SERIAL=y CONFIG_UART_USE_RUNTIME_CONFIGURE=y CONFIG_UART_ASYNC_API=y CONFIG_NRFX_TIMER2=y # Stacks and heaps CONFIG_MAIN_STACK_SIZE=4096 CONFIG_HEAP_MEM_POOL_SIZE=16384 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096 CONFIG_AT_MONITOR_HEAP_SIZE=4096 # Device power management CONFIG_PM_DEVICE=y # FOTA CONFIG_HTTP_PARSER_URL=y CONFIG_FOTA_DOWNLOAD=y CONFIG_FOTA_DOWNLOAD_PROGRESS_EVT=y CONFIG_DFU_TARGET=y CONFIG_DOWNLOAD_CLIENT=y CONFIG_DOWNLOAD_CLIENT_STACK_SIZE=4096 CONFIG_DOWNLOAD_CLIENT_MAX_FILENAME_SIZE=2048 CONFIG_BOOTLOADER_MCUBOOT=y CONFIG_IMG_MANAGER=y # FLASH CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_STREAM_FLASH=y CONFIG_MPU_ALLOW_FLASH_WRITE=y CONFIG_IMG_ERASE_PROGRESSIVELY=y # Settings CONFIG_SETTINGS=y CONFIG_SETTINGS_NVS=y CONFIG_NVS=y # nRF Cloud CONFIG_NRF_CLOUD_IPV6=n CONFIG_NRF_CLOUD_MQTT=y CONFIG_NRF_CLOUD_FOTA=n CONFIG_NRF_CLOUD_AGNSS=y CONFIG_NRF_CLOUD_AGNSS_FILTERED=n CONFIG_NRF_CLOUD_PGPS=n CONFIG_NRF_CLOUD_LOCATION=y CONFIG_NRF_CLOUD_LOG_LEVEL_INF=y CONFIG_NRF_CLOUD_GPS_LOG_LEVEL_INF=y CONFIG_NRF_CLOUD_CLIENT_ID_SRC_INTERNAL_UUID=y CONFIG_NRF_CLOUD_WIFI_LOCATION_ENCODE_OPT_MAC_RSSI=y CONFIG_DATE_TIME=y CONFIG_MODEM_INFO=y CONFIG_MODEM_INFO_ADD_DATE_TIME=n # UUID and JWT CONFIG_MODEM_JWT=y # MQTT client #CONFIG_MQTT_KEEPALIVE=60 CONFIG_MQTT_CLEAN_SESSION=y # AT command helper libraries CONFIG_AT_CMD_PARSER=y CONFIG_AT_MONITOR=y # # SLM-specific configurations # CONFIG_SLM_CUSTOMER_VERSION="" CONFIG_SLM_EXTERNAL_XTAL=n CONFIG_SLM_START_SLEEP=n CONFIG_SLM_DATAMODE_URC=n # debug options #CONFIG_ASSERT=y #CONFIG_LOG_BUFFER_SIZE=16384 CONFIG_SLM_LOG_LEVEL_DBG=y #CONFIG_LOG_PRINTK=n #CONFIG_LOG_MODE_IMMEDIATE=y # For using external GNSS antenna #CONFIG_MODEM_ANTENNA=y #CONFIG_MODEM_ANTENNA_GNSS_EXTERNAL=y CONFIG_SLM_CR_TERMINATION=y
RTT output:
Nucelo IRQ Handler:
