Is there a code example of how to use uuids_more_available

RE: Is there a code example of how to use uuids_more_available

Petter Myhre — Fri, 03 Jul 2015 07:45:20 GMT

This question was answered through a MyPage support case.

RE: Is there a code example of how to use uuids_more_available

Petter Myhre — Wed, 01 Jul 2015 13:54:07 GMT

Looks ok. Could you upload your complete project so I can have a test it here? You can also share it confidentially in a private support case through your MyPage account at nordicsemi.com, if you do, please refer to this question.

RE: Is there a code example of how to use uuids_more_available

Andreas — Wed, 01 Jul 2015 11:56:13 GMT

Hello, yes, I get the err_code=12 when calling sd_ble_characteristic_add(). This is done in the direction_char_add(...) function.

static uint32_t direction_char_add(ble_command_t * p_com, const ble_command_init_t * p_com_init){
ble_gatts_char_md_t char_md;
ble_gatts_attr_md_t cccd_md;
ble_gatts_attr_t    attr_char_value;
ble_uuid_t          ble_uuid;
ble_gatts_attr_md_t attr_md;
	uint32_t   err_code=0;
	int i=0;

	for(i=0;i<4;i++)
	{
		commandDirection[i]= i;
	}

memset(&cccd_md, 0, sizeof(cccd_md));

BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);

cccd_md.vloc = BLE_GATTS_VLOC_STACK;

memset(&char_md, 0, sizeof(char_md));

char_md.char_props.notify = 1;
	char_md.char_props.read = 1;
char_md.p_char_user_desc  = NULL;
char_md.p_char_pf         = NULL;
char_md.p_user_desc_md    = NULL;
char_md.p_cccd_md         = &cccd_md;
char_md.p_sccd_md         = NULL;

ble_uuid.type = p_com->uuid_type;
ble_uuid.uuid = BLE_UUID_DEV_COMMAND_DIRECTION_CHAR;

memset(&attr_md, 0, sizeof(attr_md));

BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);

attr_md.vloc    = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen    = 1;

memset(&attr_char_value, 0, sizeof(attr_char_value));

attr_char_value.p_uuid    = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len  = (4*sizeof(uint8_t));
attr_char_value.init_offs = 0;
attr_char_value.max_len   = BLE_COMMAND_MAX_DIRECTION_LEN;
	attr_char_value.p_value = commandDirection;

	err_code = sd_ble_gatts_characteristic_add(p_com->service_handle,
                                       &char_md,
                                       &attr_char_value,
                                       &p_com->direction_handle);
	
	if (err_code != NRF_SUCCESS)
{
    printf("err_code_direction_char_add=%d\r",err_code);
			return err_code;
}

}

So in this function I get the printf "err_code_direction_char_add=12" on the terminal. I had a look on the types of the parameters given to sd_ble_gatts_characteristic_add(...). For me it looks ok...

RE: Is there a code example of how to use uuids_more_available

Petter Myhre — Wed, 01 Jul 2015 10:53:10 GMT

So sd_ble_gatts_characteristic_add() returns NRF_ERROR_DATA_SIZE? You haven't included that part of the code. NRF_ERROR_DATA_SIZE means Invalid data size(s) supplied. What arguments are you supplying to sd_ble_gatts_characteristic_add()?

RE: Is there a code example of how to use uuids_more_available

Andreas — Wed, 01 Jul 2015 05:37:46 GMT

No, I`m using the S120 as an peripheral.

RE: Is there a code example of how to use uuids_more_available

Petter Myhre — Tue, 30 Jun 2015 14:20:15 GMT

Not the S110? Are you adding the GATT server to the central or the peripheral?

RE: Is there a code example of how to use uuids_more_available

Andreas — Tue, 30 Jun 2015 14:06:39 GMT

I`m using the S120 softdevice from the 8.1.0 SDK.

RE: Is there a code example of how to use uuids_more_available

Petter Myhre — Tue, 30 Jun 2015 12:17:35 GMT

What SoftDevice and SoftDevice version are you using?

RE: Is there a code example of how to use uuids_more_available

Andreas — Tue, 30 Jun 2015 11:58:36 GMT

Hello Petter, thanks for your reply. For now, I also belive that there is no problem with the length of the advertising data. Im able to add one custom service. I can also add a second custom service. But when I trie to add a characteristic to this service, I get an NRF_ERROR=12 (NRF_ERROR_DATA_SIZE). But I dont know how I can solve this issue... :-( Can someone have a look on my ble_command_init() function? The second custom service is called command...

uint32_t ble_command_init(ble_command_t * p_com, const ble_command_init_t * p_com_init){
uint32_t   err_code;
ble_uuid_t ble_uuid;

// Initialize service structure
p_com->conn_handle = BLE_CONN_HANDLE_INVALID;
//p_com->type   = p_com_init->temp_type;

// Add service
BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_SERVICE_COMMAND);

err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &p_com->service_handle);
if (err_code != NRF_SUCCESS)
{
    return err_code;
}

	
	err_code = direction_char_add(p_com, p_com_init);
	if (err_code != NRF_SUCCESS)
{
    printf("err_code_direction_add=%d\r",err_code);
			return err_code;
}
	
return NRF_SUCCESS;}

Thanks, BTprogrammer

RE: Is there a code example of how to use uuids_more_available

Petter Myhre — Tue, 30 Jun 2015 07:51:59 GMT

I think you are mixing things up at bit here. In services_init() you add services, characteristics and descriptors to the GATT server on your device. In advertising_init() you select what UUIDs that should be included in the advertising packet. But the UUIDs used in services_init() and advertising_init() are not related, they could be totally different, but of course that wouldn't make much sense. What I'm trying to say is that you can't fix an error in services_init() by modifying advertising_init(). How many vendor specific UUIDs are you trying to add? How many are you able to add before you get the error?