How to add custom service to the Ble_app_template example

[sagarnayakm]

Hello i am using nrf52810 with SDK version 17.0.2 , i want to add custom service to the ble_app_template example and i followed this tutorial link https://github.com/edvinand/custom_ble_service_example so at first debug i got this error as expected 

next i have change the RAM_START AND RAM_SIZE as per the memory size mentioned in the error then i DEBUG it again so the i got 

so i don't know what's happening please help me to resolve this . 

thank you.

[Karl Ylvisaker]

Hello,

Please make sure to have DEBUG defined in your preprocessor defines, like shown in the included image:

This will make your logger output a detailed error message whenever a non-NRF_SUCCESS error code is passed to an APP_ERROR_CHECK.
Please do this, and let me know what the error message reads, along with which function that returned the error code pointed to in the error message.

Best regards,
Karl

[sagarnayakm]

Hello,

mr Karl i am very happy to communicate with you and thank you so much for your reply, i tried as you said  and i got this error,

thank you,

[Karl Ylvisaker]

sagarnayakm said:

mr Karl i am very happy to communicate with you and thank you so much for your reply

No problem at all, I am happy to help!

sagarnayakm said:

i tried as you said  and i got this error,

Which function returns this error code? Please check the end of the error message to see where the APP_ERROR_CHECK was triggered.

Best regards,
Karl

[sagarnayakm]

Hello,

yes, i got where exactly its the function service_init()  in that ble_cus_init() it returns err_code 7 please

have a look at this ,

thank you,

[Karl Ylvisaker]

So it seems your ble_cus_init function is returning the NRF_ERROR_INVALID_PARAM error.
How does this function look? Under what conditions will it return this error code?
Likely it is just forwarding the error code generated by a SDK function it itself is calling.

Best regards,
Karl

[sagarnayakm]

Hello,

Karl Ylvisaker said:

How does this function look?

the service_init() function is look this.

static void services_init(void)
{
ret_code_t err_code;
nrf_ble_qwr_init_t qwr_init = {0};

// Initialize Queued Write Module.
qwr_init.error_handler = nrf_qwr_error_handler;

err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
APP_ERROR_CHECK(err_code);

/* YOUR_JOB: Add code to initialize the services used by the application.
ble_xxs_init_t xxs_init;
ble_yys_init_t yys_init;

// Initialize XXX Service.
memset(&xxs_init, 0, sizeof(xxs_init));

xxs_init.evt_handler = NULL;
xxs_init.is_xxx_notify_supported = true;
xxs_init.ble_xx_initial_value.level = 100;

err_code = ble_bas_init(&m_xxs, &xxs_init);
APP_ERROR_CHECK(err_code);

// Initialize YYY Service.
memset(&yys_init, 0, sizeof(yys_init));
yys_init.evt_handler = on_yys_evt;
yys_init.ble_yy_initial_value.counter = 0;

err_code = ble_yy_service_init(&yys_init, &yy_init);
APP_ERROR_CHECK(err_code);
*/

ble_cus_init_t cus_init;


// Initialize CUS Service.
memset(&cus_init, 0, sizeof(cus_init));

err_code = ble_cus_init(&m_cus, &cus_init);
printf("err_code:%d",err_code);
APP_ERROR_CHECK(err_code);
}

next, like i want to send some data from

aa-ble_app_template - Custom_service1.zip

nrf_connect mobile app to the device. If i am not wrong i need to add custom_service to my code right.?? so for this i used this code please have look at the zip.file

thank you.

[Karl Ylvisaker]

sagarnayakm said:

the service_init() function is look this.

The error seems to be returned by the ble_cus_init not services_init, please show ble_cus_init instead so I may take a look.
Please also try to find out for yourself why it would return the INVALID_PARAM by checking its API reference - or the API reference of any function which error code is forwarded - and let me know what you think.

Best regards,
Karl

[sagarnayakm]

Hello,

Karl Ylvisaker said:

please show ble_cus_init instead so I may take a look.

uint32_t ble_cus_init(ble_cus_t * p_cus, const ble_cus_init_t * p_cus_init)
{
if (p_cus == NULL || p_cus_init == NULL)
{
return NRF_ERROR_NULL;
}

uint32_t err_code;
ble_uuid_t ble_uuid;

// Initialize service structure
p_cus->evt_handler = p_cus_init->evt_handler;
p_cus->conn_handle = BLE_CONN_HANDLE_INVALID;

// Add Custom Service UUID
ble_uuid128_t base_uuid = {CUSTOM_SERVICE_UUID_BASE};
err_code = sd_ble_uuid_vs_add(&base_uuid, &p_cus->uuid_type);
VERIFY_SUCCESS(err_code);

ble_uuid.type = p_cus->uuid_type;
ble_uuid.uuid = CUSTOM_SERVICE_UUID;

// Add the Custom Service
err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &p_cus->service_handle);
if (err_code != NRF_SUCCESS)
{
return err_code;
}

// Add Custom Value characteristic
return custom_value_char_add(p_cus, p_cus_init);
}

Karl Ylvisaker said:

let me know what you think.

i think the UUID which we are passing to the function is wrong.