S42/Central Software User Guide
1VV0301318 Rev. 3
– 2018-08-31
Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved.
Page 16 of 66
3.1.1.6.1.
Enable Notifications:
AT+LECCCD=0x10,0x0011,1
OK
The result message “OK” reports that activating notifications to the required connection handle
and characteristic handle was successful.
When the data of this characteristic on the GATT server changed to “0x36, 0x37” the
S42/Central generates an event (“LENOTI”) that reports these changes:
LENOTI:0x10,0x0011,3637
The reported “LENOTI” event of the S42/Central contains the new data of the
characteristic with handle “0x0011” and connection handle “0x10”.
The data is formatted as a hexadecimal stream “3637” that includes two bytes 0x36 and 0x37.
Every data change on the remote GATT server characteristic generates a new “LENOTI” event
until the notifications to this characteristic are switched off.
3.1.1.6.2.
Disable Notifications:
AT+LECCCD=0x10,0x0011,0
OK
The result message “OK” reports that deactivating the notifications to the required connection
handle and characteristic handle was successful.
3.1.1.6.3.
Enable Indications:
AT+LECCCD=0x10,0x0011,2
OK
The result message “OK” reports that activating indications to the required connection handle
and characteristic handle was successful.
When the data of this characteristic on the GATT server changed to “0x36, 0x38” the
S42/Central generates an event (“LEIND”) that reports these changes:
LEIND:0x10,0x0011,3638
The reported “LEIND” event of the S42/Central contains the new data of the
characteristic with handle “0x0011” and connection handle “0x10”.
The data is formatted as a hexadecimal stream “3638” that includes two bytes 0x36 and 0x38.
Every data change on the remote GATT server characteristic generates a new “LEIND” event
until the indications to this characteristic are switched off.
