Notify - Not updating in MCP

RE: Notify - Not updating in MCP

KnightYusuf — Thu, 13 Oct 2016 11:14:40 GMT

Hi, I've the same problem

How do you check that the conn_handle is pointing to the correct handle? Thanks

RE: Notify - Not updating in MCP

c cook — Wed, 29 Apr 2015 15:42:39 GMT

p_blinds->conn_handle was pointing to the wrong handle. Now it works.

RE: Notify - Not updating in MCP

c cook — Wed, 29 Apr 2015 12:44:33 GMT

My code to initialize 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.write  	 = 1;
char_md.char_props.write_wo_resp = 1;
char_md.char_user_desc_max_size  = sizeof("Batt");
char_md.char_user_desc_size 	 = sizeof("Batt");
char_md.p_char_user_desc    	 = (uint8_t *)char_user_desc;
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_blinds->uuid_type;
ble_uuid.uuid = PWR_BATT_CAP_UUID;

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

RE: Notify - Not updating in MCP

c cook — Wed, 29 Apr 2015 12:43:03 GMT

Stian - Did you enable notifications in MCP? - Yes, I've written to the CCCD handle manually, and used the MCP's Enable Services Button. MCP shows: CharacteristicConfigurationsBits: Notification (0x0001)

RE: Notify - Not updating in MCP

Stian Røed Hafskjold — Wed, 29 Apr 2015 09:33:24 GMT

Did you enable notifications in MCP? You need to write 0x0001 to the CCCD handle.

How did you initialize the cccd_md variable? Something like this?

ble_gatts_attr_md_t 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;
cccd_md.rd_auth = 0;
cccd_md.wr_auth = 0;
cccd_md.vlen    = 1;