unable to generate services.h for (nRF8001) when added CCCD to Battery Level char

[mashhashkarma]

I added CCCD descriptor to Battery Level characteristic in the proximity_setup.xml. The nRFSTudio throws an error 0x01 while generating services.h. Kindly help me generate the service.h with addition of the CCCD

Attached is the XML.proximity_setup.xml

Below is the error log:

Generating code
Calling init with format code set to:0x3 Security set to:  0x1
Init called with apperance:0240
Init called with with clocksource:  0x1 Clock accuracy: 0x1 16MHz clock bypass setting set to 0x0
Init called with dcdc converter enable set to 0x0
Init called with devicenamewritelength 0x0
Calling whitelistdisable with:0x1
gap_set_device_name name: PROXIMITY 1.2short length: 0x9length: 0xd
ublue_setup_sec_set_params called with:  auth_req: 0x0 io caps: 0x0 oob: 0x0 minimum size: 0x7 maximum key size: 0x10 bond timeout: 0x258 security request delay: 0x63
ublue_setup_hw_set_window_limit called with:  limit set to: 0x64 auto off counter set to: 0xff dropedPacketThreshold set to: 0x2
hw_set_active_signal  called with mode: 0x0 and distaceToTick: 0x0
hw_ad_set_tx_power  called with inital power: 3 and gain set to: 0
ublue_setup_gap_set_ppcp  called with inital minimum: 0x190 maximum 0x320 slave latency: 0x0 timeout multiplier: 0x258
Printout of table passed to ublue_setup_assign_vs_uuids
	Nr: 0: 0xfd 0x1d 0x6d 0xfe 0xd0 0xaf 0xbd 0x93 0xe4 0x11 0x3f 0x29 0x0 0x0 0x9 0x3e 
Adding primary service with UUID: 0x1804 base index: 0x1 and with location set to: 0x1
Adding characteristic with uuid: 0x2a07base: 0x1 maxdatalength: 1 attribute_len_type:0x1 description format code: 0x0 exponent: 0x0 unit: 0x0 namespace: 0x0 descriptor: 0x0 size of default value: 1 default value: 0 forceToOpen 0x0 forceEncryption 0x0
Defining pipe with id: 0x1 UUID: 2a07 Pipe type: 0x80 Security setting: 0x1
Adding primary service with UUID: 0x1802 base index: 0x1 and with location set to: 0x1
Adding characteristic with uuid: 0x2a06base: 0x1 maxdatalength: 1 attribute_len_type:0x1 description format code: 0x0 exponent: 0x0 unit: 0x0 namespace: 0x0 descriptor: 0x0 size of default value: 0 default value:  forceToOpen 0x0 forceEncryption 0x0
Defining pipe with id: 0x2 UUID: 2a06 Pipe type: 0x8 Security setting: 0x1
Adding primary service with UUID: 0x1803 base index: 0x1 and with location set to: 0x1
Adding characteristic with uuid: 0x2a06base: 0x1 maxdatalength: 1 attribute_len_type:0x1 description format code: 0x0 exponent: 0x0 unit: 0x0 namespace: 0x0 descriptor: 0x0 size of default value: 1 default value: 0 forceToOpen 0x0 forceEncryption 0x0
Defining pipe with id: 0x3 UUID: 2a06 Pipe type: 0x400 Security setting: 0x1
Adding primary service with UUID: 0x180f base index: 0x1 and with location set to: 0x1
Adding characteristic with uuid: 0x2a19base: 0x1 maxdatalength: 1 attribute_len_type:0x1 description format code: 0x0 exponent: 0x0 unit: 0x0 namespace: 0x0 descriptor: 0x0 size of default value: 1 default value: 64 forceToOpen 0x0 forceEncryption 0x0
Defining pipe with id: 0x4 UUID: 2a19 Pipe type: 0x2 Security setting: 0x1
Defining pipe with id: 0x5 UUID: 2a19 Pipe type: 0x80 Security setting: 0x1
Calling ublue_setup_add_char_descriptor with uuid: 0x2902Base0x1 max_data_len: 0x8 attribute_len_type: 0x1 init_data_len: 0x1 p_init_data:1 forceToOpen 0x0 forceToEncryption 0x0
 Return code: 0x1

[proximity_setup.xml](/cfs-file/__key/communityserver-discussions-components-files/4/7028.proximity_5F00_setup.xml)

[Hung Bui]

Hi Mashhashkarma,

The characteristic Battery level already has the Notify property already. You don't need to add CCCD descriptor in to allow notification.

[mashhashkarma]

Question clarification: It would be valid to have the CCCD nevertheless right ? So why the error to generate the services.h. (bit of background to question--> the Tx Pipe mapped to the Battery Level characterisitic is not Open[lib_aci_is_pipe_available returns false] so unable to send the notifications.In order to open it, trying to make the Client sent a write request to a CCCD which will open the Pipe)

[mashhashkarma]

Bui, i understand what you said. I used the nRF Master Control Panel Android App and discovered the services of my BLE device and it showed the CCC descriptor of the Battery level already there meaning i dont have to add the CCC Descriptor in the nRFStudio,... its already there since Battery Level has property of Notify.

Please correct me if i'm wrong Bui. Thanks Bui, for your time.

[Hung Bui]

Hi Mashhashkarma,

If you use the correct UUID, which is 0x2901 for Characteristic User Description and remove SetPipe, you should be able to create the source for the Descriptor. Yep, you don't have to add CCCD if the characteristic has Notify property.