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How to Send the thread network name through CoAP Response

simon8

Hi i was wondering how could i send, with a coap response, one's device network name and a, for exaple a temperature value, like this:

<device's network name>: <temperature value>

I tried this, but failed:

const char *myTemperatureJson = "23.32";
const char *buf[] = {CONFIG_OPENTHREAD_NETWORK_NAME,'   ', myTemperatureJson};
.
.
.
error = otMessageAppend(p_response, buf, strlen(buf));
Is there any other way to do this?
thanks
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  • 0 in reply to Edvin

    Sorry

    when i build it prints this:

    Building coap_rec_myserver
    west build --build-dir c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\build c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver

    [0/16] Performing build step for '802154_rpmsg_subimage'
    ninja: no work to do.
    [2/14] Building C object CMakeFiles/app.dir/src/main.c.obj
    FAILED: CMakeFiles/app.dir/src/main.c.obj
    C:\ncs\toolchains\v2.1.1\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe -DKERNEL -DMBEDTLS_CONFIG_FILE=\"nrf-config.h\" -DMBEDTLS_USER_CONFIG_FILE=\"nrf-config-user.h\" -DNRF5340_XXAA_APPLICATION -DNRF_802154_ACK_TIMEOUT_ENABLED=1 -DNRF_802154_ECB_PRIORITY=-1 -DNRF_802154_ENCRYPTION_ENABLED=1 -DNRF_802154_IE_WRITER_ENABLED=1 -DNRF_802154_INTERNAL_RADIO_IRQ_HANDLING=0 -DNRF_802154_PENDING_EXTENDED_ADDRESSES="" -DNRF_802154_PENDING_SHORT_ADDRESSES="" -DNRF_802154_RX_BUFFERS=16 -DNRF_802154_SECURITY_WRITER_ENABLED=1 -DNRF_802154_SWI_PRIORITY=1 -DNRF_802154_TX_STARTED_NOTIFY_ENABLED=1 -DNRF_802154_USE_RAW_API=1 -DNRF_SKIP_FICR_NS_COPY_TO_RAM -DUSE_PARTITION_MANAGER=1 -D_FORTIFY_SOURCE=2 -D__LINUX_ERRNO_EXTENSIONS__ -D__PROGRAM_START -D__ZEPHYR__=1 -IC:/ncs/v2.1.1/zephyr/include/zephyr -IC:/ncs/v2.1.1/zephyr/include -Izephyr/include/generated -IC:/ncs/v2.1.1/zephyr/soc/arm/nordic_nrf/nrf53 -IC:/ncs/v2.1.1/zephyr/lib/libc/newlib/include -IC:/ncs/v2.1.1/zephyr/lib/util/fnmatch/. -IC:/ncs/v2.1.1/zephyr/soc/arm/nordic_nrf/common/. -IC:/ncs/v2.1.1/zephyr/subsys/net/lib/sockets/. -IC:/ncs/v2.1.1/zephyr/subsys/settings/include -IC:/ncs/v2.1.1/nrf/include -IC:/ncs/v2.1.1/zephyr/modules/openthread/platform/. -IC:/ncs/v2.1.1/modules/hal/cmsis/CMSIS/Core/Include -IC:/ncs/v2.1.1/modules/hal/nordic/nrfx -IC:/ncs/v2.1.1/modules/hal/nordic/nrfx/drivers/include -IC:/ncs/v2.1.1/modules/hal/nordic/nrfx/mdk -IC:/ncs/v2.1.1/zephyr/modules/hal_nordic/nrfx/. -Imodules/libmetal/libmetal/lib/include -IC:/ncs/v2.1.1/modules/lib/open-amp/open-amp/lib/include -IC:/ncs/v2.1.1/nrfxlib/openthread/include -IC:/ncs/v2.1.1/nrfxlib/nrf_802154/serialization/include -IC:/ncs/v2.1.1/nrfxlib/nrf_802154/serialization/include/platform -IC:/ncs/v2.1.1/nrfxlib/nrf_802154/serialization/include/serialization -IC:/ncs/v2.1.1/nrfxlib/nrf_802154/serialization/include/host -Imodules/nrfxlib/nrfxlib/nrf_security/src/include/generated -IC:/ncs/v2.1.1/nrfxlib/nrf_security/include -IC:/ncs/v2.1.1/nrfxlib/nrf_security/include/mbedtls -IC:/ncs/v2.1.1/nrfxlib/nrf_security/include/psa -IC:/ncs/v2.1.1/mbedtls/include -IC:/ncs/v2.1.1/mbedtls/include/mbedtls -IC:/ncs/v2.1.1/mbedtls/include/psa -IC:/ncs/v2.1.1/mbedtls/library -IC:/ncs/v2.1.1/nrfxlib/nrf_security/../crypto/nrf_oberon/include -IC:/ncs/v2.1.1/nrfxlib/nrf_security/../crypto/nrf_oberon/include/mbedtls -IC:/ncs/v2.1.1/nrfxlib/nrf_security/../crypto/nrf_oberon/include/psa -IC:/ncs/v2.1.1/nrfxlib/crypto/nrf_oberon/include/mbedtls -IC:/ncs/v2.1.1/nrfxlib/crypto/nrf_oberon/include -isystem C:/ncs/v2.1.1/zephyr/subsys/cpp/include -isystem C:/ncs/v2.1.1/nrfxlib/crypto/nrf_cc312_platform/include -Os -imacros C:/progetti/nexter/VS/esempi/server-send__client-receive/coap_rec_myserver/build/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m33 -mthumb -mabi=aapcs -mfpu=fpv5-sp-d16 -mfloat-abi=hard -mfp16-format=ieee --sysroot=C:/ncs/toolchains/v2.1.1/opt/zephyr-sdk/arm-zephyr-eabi/arm-zephyr-eabi -imacros C:/ncs/v2.1.1/zephyr/include/zephyr/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=C:/progetti/nexter/VS/esempi/server-send__client-receive/coap_rec_myserver=CMAKE_SOURCE_DIR -fmacro-prefix-map=C:/ncs/v2.1.1/zephyr=ZEPHYR_BASE -fmacro-prefix-map=C:/ncs/v2.1.1=WEST_TOPDIR -ffunction-sections -fdata-sections -specs=nano.specs -std=c99 -MD -MT CMakeFiles/app.dir/src/main.c.obj -MF CMakeFiles\app.dir\src\main.c.obj.d -o CMakeFiles/app.dir/src/main.c.obj -c ../src/main.c
    c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:24:53: warning: multi-character character constant [-Wmultichar]
    24 | const char *buf[] = {CONFIG_OPENTHREAD_NETWORK_NAME,' ', myTemperatureJson};
    | ^~~~~
    c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:24:53: warning: initialization of 'const char *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
    c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:24:53: note: (near initialization for 'buf[1]')
    c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:24:60: error: initializer element is not constant
    24 | const char *buf[] = {CONFIG_OPENTHREAD_NETWORK_NAME,' ', myTemperatureJson};
    | ^~~~~~~~~~~~~~~~~
    c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:24:60: note: (near initialization for 'buf[2]')
    ../src/main.c: In function 'temperature_response_send':
    c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:93:50: warning: passing argument 1 of 'strlen' from incompatible pointer type [-Wincompatible-pointer-types]
    93 | error = otMessageAppend(p_response, buf, strlen(buf));
    | ^~~
    | |
    | const char **
    In file included from C:\ncs\v2.1.1\zephyr\include\zephyr\net\net_core.h:17,
    from C:\ncs\v2.1.1\zephyr\include\zephyr\net\net_if.h:25,
    from C:\ncs\v2.1.1\zephyr\include\zephyr\net\openthread.h:23,
    from c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\src\main.c:11:
    c:\ncs\toolchains\v2.1.1\opt\zephyr-sdk\arm-zephyr-eabi\arm-zephyr-eabi\sys-include\string.h:41:17: note: expected 'const char *' but argument is of type 'const char **'
    41 | size_t strlen (const char *);
    | ^~~~~~~~~~~~
    ninja: build stopped: subcommand failed.
    FATAL ERROR: command exited with status 1: 'c:\ncs\toolchains\v2.1.1\opt\bin\cmake.EXE' --build 'c:\progetti\nexter\VS\esempi\server-send__client-receive\coap_rec_myserver\build'

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