CC2640R2F: why simple_peripheral example use notify but don't receive any data from smartphone?

Dear Clément,

          I use the SDK <simplelink_cc2640r2_sdk_3_20_00_21> and <blestack /simple_peripheral>.

I read the README file in the example,but I don't understand clearly.

So the Characteristic 4 only notify central but don't receive data from central device?

Characteristic 1 can read and write data from central device?

Regards

I suppose you should do write GATT attribute from central to peripheral.

Dear YK_Chen,

            Sorry, I don't express correctly.

When the central device like smartphone connect CC2640R2 by BLE.

CC2640R2 run <simplelink_cc2640r2_sdk_3_20_00_21> and <blestack /simple_peripheral>

smartphone use Characteristic 4 to notify CC2640R2,right?

But smartphone can't use Characteristic 4 to receive data,is this correct?

Regards

No, characteristic 4 is for sending notification from peripheral to central. You cannot use it in reverse way.

Dear YK Chen,

         The Readme file says that enable notify from smartphone APP.

Smartphone is central device,right?

Yes, you have to enable notification from central to peripheral but notification is from peripheral to central after you enable it.

Dear YK Chen,

           So why I can't  send notification data from peripheral to central after I enable notification?

Regards

If you enable notification of characteristic 4 on simple_peripheral example, can you see simple_peripheral send characteristic 4 notification to central?

Dear YK Chen,

              I use smartphone to enable notification  of characteristic 4 on simple_peripheral example,

But I can't see simple_peripheral send characteristic 4 notification to smartphone.

readme only says that “ and this characteristic will be updated and will display the value contained in characteristic 3:”

characteristic3 has write property only. Its value can be written to following the same procedure as is detailed for characteristic 1. It has a default value of 0x03.

So I can't see simple_peripheral send characteristic 4 notification to smartphone.

Regards

I try to enable characteristic 4 notification on simple_peripheral from Btool and I can see simple_peripheral sends notification. I suggest you to try this with Btool and see if it works first.

Dear YK Chen,

         Would you give me a procedure about using BTool to see simple_peripheral sends notification?

I will follow your procedure to check it.

Regards

Try to refer to Enable Notifications from Btool.

Dear YK Chen,

                       This is only enable notification from BTool ,

not sending data from simple_peripheral to central device(smartphone or BTool),right?

Regards

After you enable notification, simple_peripheral will send notification to central automatically.

Dear YK Chen,

          Where can I see that simple_peripheral will send notification to central automatically?

I don't see it in the link you give.

Regards

Dear YK Chen,

       I can't access this link, it show that "web can not visit".

Regards

If you are from China, it will block by your Great Wall firewall and I suppose you need to use VPN to access the link.