CCS/LAUNCHXL-CC26X2R1: Trying to read the value from simple peripheral and gpio

Kedar Joshi1

Tool/software: Code Composer Studio

Hey!

I'm trying to implement a part of the project where I have to read the data from DIO pins and send it to the host device via BLE.

I'm very confused as I'm not sure how to implement it in simple peripheral.

I'm trying to write the data by notifying as follows and it works perfectly as you can see below.

case GATT_CLIENT_CHAR_CFG_UUID:
        status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,
                                                 offset, GATT_CLIENT_CFG_NOTIFY );

but when I try to implement the same with the read it is showing me errors. I'm not even sure if its correct.

case GATT_PROP_READ:
         status = extern GATTServApp_ReadAttr( connHandle, pAttr, service,    pValue,
                                               16,       offset, 8,     GATT_CLIENT_CFG_NOTIFY );

Please help me as I'm stuck on this for quite long. Any examples or any help is very appriciated!

Thanks in Advance,

Kedar

over 5 years ago

0 Elin W over 5 years ago

TI__Genius 14845 points

Hi Kedar,

Assigning an expert to help.

Thanks,
Elin

0 Clément over 5 years ago

TI__Guru** 101460 points

Hi,

Can you verify that the data you are trying to read is readable (and not notify only). Please also verify that no higher rights are required to read the data.

In the simple_central example, please consult the function SimpleCentral_doGattRead() for an example of a GATT read.

Best regards,

0 Kedar Joshi1 over 5 years ago in reply to Clément

Prodigy 90 points

Hey !

Thanks for your reply!
unfortunetly I cannot read the data, not in the app at least!

I didn't get you about the higher rights! Can you please elabourate ?

Thank you for the tip on the simple_central I will look more into it now!

Best Regrads,

Kedar

0 Clément over 5 years ago in reply to Kedar Joshi1

TI__Guru** 101460 points

Hi,

By "higher rights" I meant that your characteristic can be encrypted. If so, only paired devices can read the characteristic. You can review the BLE Security Fundamentals Simple Link Academy lab if this subject interests you.

Regards,

0 Kedar Joshi1 over 5 years ago in reply to Clément

Prodigy 90 points

Hey Clément,

Thank you so much!
You are real live saviour.:!

have a great week ahead!

Best Regards,

Kedar

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CCS/LAUNCHXL-CC26X2R1: Trying to read the value from simple peripheral and gpio