Process of sending data with SimpleBLEperipheral

Hi,
Good question. The simpleBLEPeripheral.c only has a callback to notify if a characteristic has been written to. You should see the simpleGATTprofile.c under the PROFILES folder to see how characteristics are updated from the GATT table that is initialized in that file. Usually the server side sends data in notification packets and central device send write commands. See this reference design how data is transferred between server and client: www.ti.com/.../TIDC-SPPBLE-SW-RD

Let us know if this is clear.

Best wishes

Thanks for our help.

Sorry, it's not more clear for me. What is the use of GATT table ? And how is read the desired data by client ?

In simpleBLEperipheral.c  there is the event called SYS_EVENT_MSG which call simpleBLEPeripheral_ProcessOSALMsg function which itself call simpleBLEPeripheral_ProcessGATTMsg function when a GATT message is received ( I thought that was the client's request ). And this function only clear memory allocated by GATT message.
I don't understand why this function not processed the message.

Hey Zahid,
As i can see in the SimpleGATTprofile.c i think we need to use simpleProfileChar4 as it is only there to notify the data.
Please correct me if m wrong.
Thanks

Hi Pradeep,

I think you are right.
So, if we want to send a data, we have to change characteristic 4 value and wait a read request ?

hey i am sending data via characteristic 4 only but don't know where data is getting received.

Hi Pradeep,

I would start with using BTOOL(connected to central device) with read and write data to the characteristic on the peripheral device (for example Char. 1):

Best wishes

Hey zahid,
In Btool its easy as we know by which profile we are sending data so we can set data in peripheral and the read it on the BTool. But the problem occur when we have to transfer data between two device. At that time its not really happening.

Sorry but, what's the difference between a characteristic simply readable and and a characteristic notifiable ? Both permit to client to read the value, right ?

Notifiable characteristic need to define how data will be readable while in case of simply readable just Get can do that work.