error compiling nus_data_handler

[Andhika]

Hi,

I try to modify ble_app_uart so i can get a feed back from the boar if send something I use switch case for my use case, I'm working with eclipse

here what I do:

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static void nus_data_handler(ble_nus_evt_t * p_evt)

{

uint32_t err_code;

uint64_t counter = 0;

uint16_t length1 = 0;

char PrintBuffer[256] = {0};

// p_evt->type == BLE_NUS_EVT_RX_DATA;

for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)

{

switch (p_evt->params.rx_data.p_data[i])

{

case 'M':

memset(PrintBuffer,128,sizeof(PrintBuffer)); //clear PrintBuffer buffer

sprintf(PrintBuffer, "Good Morning"); //prepare data

length1 = strlen(PrintBuffer); //get data length

err_code = ble_nus_data_send(&m_nus, (uint8_t *) PrintBuffer, &length1 ,m_conn_handle); //output data via ble

// nrf_delay_ms(100);

break;

case 'W':

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static void nus_data_handler(ble_nus_evt_t * p_evt)
{

    uint32_t err_code;
    uint64_t counter = 0;
    uint16_t length1 = 0;
    char PrintBuffer[256] = {0};
//    p_evt->type == BLE_NUS_EVT_RX_DATA;

    for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
    {
        switch (p_evt->params.rx_data.p_data[i])
       {
        case 'M':
            memset(PrintBuffer,128,sizeof(PrintBuffer)); 							//clear PrintBuffer buffer
            sprintf(PrintBuffer, "Good Morning");                             //prepare data
            length1 = strlen(PrintBuffer);                                                      //get data length
            err_code = ble_nus_data_send(&m_nus, (uint8_t *) PrintBuffer, &length1 ,m_conn_handle);          //output data via ble
//            nrf_delay_ms(100);
            break;
        case 'W':
            memset(PrintBuffer,128,sizeof(PrintBuffer));                                       //clear PrintBuffer buffer
            sprintf(PrintBuffer, "Hello World");                              //prepare data
            length1 = strlen(PrintBuffer);                                                      //get data length
            err_code = ble_nus_data_send(&m_nus, (uint8_t *)  PrintBuffer, &length1 ,m_conn_handle);          //output data via ble
 //           nrf_delay_ms(100);
            break;
        case 'A':
            memset(PrintBuffer,128,sizeof(PrintBuffer));                                       //clear PrintBuffer buffer
            sprintf(PrintBuffer, "huebsch");                                  //prepare data
            length1 = strlen(PrintBuffer);                                                      //get data length
            err_code = ble_nus_data_send(&m_nus, (uint8_t *)  PrintBuffer, &length1 ,m_conn_handle);          //output data via ble
 //           nrf_delay_ms(100);
            break;
        default:
//            err_code=app_uart_put(p_evt->params.rx_data.p_data[i]);
            break;
       }
     }

}

but I got the following error:

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_build/nrf52840_xxaa/main.cpp.o:(.sdh_ble_observers2+0x0): undefined reference to `ble_nus_on_ble_evt'

_build/nrf52840_xxaa/main.cpp.o: In function `nus_data_handler(ble_nus_evt_t*)':

D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:197: undefined reference to `ble_nus_data_send'

D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:204: undefined reference to `ble_nus_data_send'

D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:211: undefined reference to `ble_nus_data_send'

_build/nrf52840_xxaa/main.cpp.o: In function `services_init()':

D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:238: undefined reference to `ble_nus_init'

collect2.exe: error: ld returned 1 exit status

make: *** [../../../../../../components/toolchain/gcc/Makefile.common:294: _build/nrf52840_xxaa.out] Error 1

"make VERBOSE=1 all" terminated with exit code 2. Build might be incomplete.

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_build/nrf52840_xxaa/main.cpp.o:(.sdh_ble_observers2+0x0): undefined reference to `ble_nus_on_ble_evt'
_build/nrf52840_xxaa/main.cpp.o: In function `nus_data_handler(ble_nus_evt_t*)':
D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:197: undefined reference to `ble_nus_data_send'
D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:204: undefined reference to `ble_nus_data_send'
D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:211: undefined reference to `ble_nus_data_send'
_build/nrf52840_xxaa/main.cpp.o: In function `services_init()':
D:\MicroswarmRepo\Nordic SDK\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\microswarm_v1\pca10059\s140\armgcc/../../../main.cpp:238: undefined reference to `ble_nus_init'
collect2.exe: error: ld returned 1 exit status
make: *** [../../../../../../components/toolchain/gcc/Makefile.common:294: _build/nrf52840_xxaa.out] Error 1
"make VERBOSE=1 all" terminated with exit code 2. Build might be incomplete.

anyone know how to fix these?

[Turbo J]

Either forgot to put ble_nus.c in the project/Makefile or you did not set BLE_NUS_ENABLED to 1 in sdk_config.h file.

[Andhika]

thank you :) now it works