Callback in ble scan

[kunalgupta]

@ScruffR

When you hit the SHOW RAW button you can get more info about the reasons

I hit the SHOW RAW button and it shows path directory and same these three errors.
like this..

Processing beacon.ino
Checking library Adafruit_GPS...
Installing library Adafruit_GPS 1.0.3 to lib/Adafruit_GPS ...
Library Adafruit_GPS 1.0.3 installed.
make -C ../modules/argon/user-part all
make[1]: Entering directory '/firmware/modules/argon/user-part
mkdir -p target/
make -f ../../../modules/shared/nRF52840/build_linker_script.mk PREBUILD=1
make[2]: Entering directory '/firmware/modules/argon/user-part'
Creating target/platform_user_ram.ld ...
make[2]: Leaving directory '/firmware/modules/argon/user-part'
make -C ../../../user
make[2]: Entering directory '/firmware/user'
Building cpp file: src/beacon.cpp
Invoking: ARM GCC CPP Compiler
mkdir -p ../build/target/user/platform-12-msrc/
arm-none-eabi-gcc -DSTM32_DEVICE -DnRF52840 -DNRF52840_XXAA -DPLATFORM_THREADING=1 -DPLATFORM_ID=12 -DPLATFORM_NAME=argon -DUSBD_VID_SPARK=0x2B04 -DUSBD_PID_DFU=0xD00C -DUSBD_PID_CDC=0xC00C -DSPARK_PLATFORM -g3 -gdwarf-2 -Os -mcpu=cortex-m4 -mthumb -mabi=aapcs -mfloat-abi=hard -mfpu=fpv4-sp-d16 -DINCLUDE_PLATFORM=1 -DSOFTDEVICE_PRESENT=1 -DS140 -DPRODUCT_ID=12 -DPRODUCT_FIRMWARE_VERSION=65535 -DOPENTHREAD_PROJECT_CORE_CONFIG_FILE="openthread-config-project.h" -DENABLE_FEM=1 -DNRF_802154_PROJECT_CONFIG="openthread-platform-config.h" -DRAAL_SOFTDEVICE=1 -D_WIZCHIP_=W5500 -DUSE_STDPERIPH_DRIVER -DDFU_BUILD_ENABLE -DLFS_CONFIG=lfs_config.h -DSYSTEM_VERSION_STRING=1.5.2 -DRELEASE_BUILD -I./inc -I../wiring/inc -I../system/inc -I../third_party/miniz/miniz -I../services/inc -I../third_party/nanopb/nanopb -I../communication/inc -I../hal/inc -I../hal/shared -I../hal/src/argon -I../hal/network/lwip/esp32 -I../hal/src/nRF52840 -I../hal/src/armv7 -I../hal/src/nRF52840 -I../hal/src/nRF52840/lwip -I../hal/src/nRF52840/freertos -I../hal/src/nRF52840/openthread -I../hal/src/nRF52840/mbedtls -I../hal/src/nRF52840/littlefs -I../hal -I../hal/network/api -I../hal/network/lwip -I../hal/network/lwip/posix -I../hal/network/openthread -I../hal/network/lwip/wiznet -I../hal/network/ncp -I../hal/network/ncp/at_parser -I../third_party/lwip/lwip/src/include -I../third_party/freertos/freertos/FreeRTOS/Source/include -I../third_party/nrf5_sdk/nrf5_sdk/external/freertos/portable/GCC/nrf52 -I../third_party/nrf5_sdk/nrf5_sdk/external/freertos/portable/CMSIS/nrf52 -I../third_party/openthread/openthread/include -I../third_party/openthread/openthread/src/core -I../third_party/openthread/openthread/examples/platforms -I../third_party/openthread/openthread/radio -I../third_party/openthread/openthread/radio/hal -I../third_party/openthread/openthread/radio/rsch -I../third_party/openthread/openthread/radio/rsch/raal -I../third_party/openthread/openthread/radio/rsch/raal/softdevice -I../third_party/wiznet_driver/wiznet_driver/Ethernet -I../gsm0710muxer/gsm0710muxer/include -I../platform/shared/inc -I../third_party/nrf5_sdk -I../third_party/nrf5_sdk/nrf5_sdk/components/toolchain/cmsis/include -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx/drivers -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx/drivers/include -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx/hal -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx/mdk -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx/hal -I../third_party/nrf5_sdk/nrf5_sdk/modules/nrfx/drivers/src/prs -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/util -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/s140/headers -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/s140/headers/nrf52 -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/common -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/fstorage -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/experimental_section_vars -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/atomic -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/crc32 -I../third_party/nrf5_sdk/nrf5_sdk/integration/nrfx/legacy -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/delay -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/log -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/log -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/log/src -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/experimental_section_vars -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/atomic -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/delay -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/queue -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/common -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/mbr/nrf52840/headers -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/s140 -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/s140/headers -I../third_party/nrf5_sdk/nrf5_sdk/components/softdevice/s140/headers/nrf52 -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/fifo -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/atomic_fifo -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/strerror -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/fstorage -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/atomic_flags -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/usbd -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/usbd/class/cdc -I../third_party/nrf5_sdk/nrf5_sdk/components/libraries/usbd/class/cdc/acm -I../third_party/nrf5_sdk/nrf5_sdk/components/ble/common -I../third_party/nrf5_sdk/nrf5_sdk/components/ble/nrf_ble_gatt -I../third_party/nrf5_sdk/nrf5_sdk/components/ble/ble_advertising -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/t2t_lib -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/platform -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/ndef/generic/message -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/ndef/generic/record -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/ndef/lauchapp -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/ndef/text -I../third_party/nrf5_sdk/nrf5_sdk/components/nfc/ndef/uri -I../third_party/nrf5_sdk/nrf5_sdk/external/nrf_cc310/include -I../third_party/nrf5_sdk/nrf5_sdk/external/utf_converter -I../third_party/littlefs/littlefs -I../platform/MCU/nRF52840/inc -I../dynalib/inc -Isrc -I./libraries -Ilib/Adafruit_GPS/src -I. -MD -MP -MF ../build/target/user/platform-12-msrc/beacon.o.d -ffunction-sections -fdata-sections -Wall -Wno-switch -Wno-error=deprecated-declarations -fmessage-length=0 -fno-strict-aliasing -DSPARK=1 -DPARTICLE=1 -Wundef -DSTART_DFU_FLASHER_SERIAL_SPEED=14400 -DSTART_YMODEM_FLASHER_SERIAL_SPEED=28800 -DSPARK_PLATFORM_NET=ESP32 -fno-builtin-malloc -fno-builtin-free -fno-builtin-realloc -DLOG_INCLUDE_SOURCE_INFO=1 -DPARTICLE_USER_MODULE -DUSER_FIRMWARE_IMAGE_SIZE=0x20000 -DUSER_FIRMWARE_IMAGE_LOCATION=0xD4000 -DMODULAR_FIRMWARE=1 -DMODULE_VERSION=6 -DMODULE_FUNCTION=5 -DMODULE_INDEX=1 -DMODULE_DEPENDENCY=4,1,1512 -DMODULE_DEPENDENCY2=0,0,0 -D_GNU_SOURCE -DLOG_MODULE_CATEGORY=""app"" -fno-exceptions -fno-rtti -fcheck-new -std=gnu++14 -c -o ../build/target/user/platform-12-msrc/beacon.o src/beacon.cpp
beacon.ino:1:19: error: variable or field 'yourcallback' declared void
beacon.ino:1:19: error: 'scanResults' was not declared in this scope
beacon.ino:15:23: error: variable or field 'yourcallback' declared void
../build/module.mk:274: recipe for target '../build/target/user/platform-12-msrc/beacon.o' failed
make[2]: *** [../build/target/user/platform-12-msrc/beacon.o] Error 1
make[2]: Leaving directory '/firmware/user'
../../../build/recurse.mk:11: recipe for target 'user' failed
make[1]: Leaving directory '/firmware/modules/argon/user-part'
make[1]: *** [user] Error 2
../build/recurse.mk:11: recipe for target 'modules/argon/user-part' failed
make: *** [modules/argon/user-part] Error 2

@ScruffR

Adopting a consistent indentation scheme makes it also easier to not forget closing braces ( } - which you are lacking one before void setup() ).

Thanks for your suggestion on how not to forget closing braces
but even after putting that braces it is showing same kinda error as shown above

@ScruffR

But you cannot put ‘NULL’ in the function definition . It is only allowed in the function call .
For a function definition your parameter list also must state the data types for them.

My argument is Void *context and i even tried like this

 int context=0;
    BleAddress adress;
    void yourcallback(scanResults,  &adress)  // or  void yourcallback(scanResults,  &context)
{
//body
}

but it shows shows same 3 errors with one additional error that adress/context is not declared in this scope

@ScruffR

It appears that you may be lacking the C fundamentals to tackle these kinds of projects on your own.

I am learning things by my own , so sometimes i gets confused with these small things . I think doing things like this will brace my skills and will also learn on how to write firmware by own.
So if u can correct me here in my code or can give me more insights on how to solve this error ,it will be greatfull for me

And why it is showing error like **ScanResults was not declared in this scope ** even though i have mentioned it as object in global space

[ScruffR]

@kunalgupta

why it is showing error like **ScanResults was not declared in this scope ** even though i have mentioned it as object in global space

Because what you got there is not a valid definition of a function and hence the function never got defined (merely mentioning it is not enough )

As I already said: The definition must state the data types (along the parameter names). You have not got that hence it doesn't work.
On the other hand a funciton call does not feature a leading void.

The docs clearly state how the function signature (definition) must look

void scanResultCallback(const BleScanResult *scanResult, void *context)

Can you spot the difference(s) to your version (which is neither a valid function definition nor a valid function call)?

@kunalgupta

void yourcallback(scanResults, NULL)

(nevermind the different names for function and paramters - but what else differs?)

This would be how to learn from mistakes - compare what is known to work with that which doesn't.