Bluetooth low energy Characteristics, a beginner's tutorial

[Bob]

I followed the steps mentioned in the Bluetooth low energy Characteristics, a beginner's tutorial, but at "if ((p_evt_write->handle == p_our_service->characteristic1_value_write_handler.value_handle))" I get a compiler error: Error[Pe154]: expression must have struct or union type. It seems that 'value_handle' is not part of characteristic1_value_write_handler? Any tips what I did wrong?

[Hung Bui]

Hi 

Could you tell which SDK you based your application on ? Please make sure you match the SDK version with the one suggested in the tutorial. 
Which IDE are you using ? 

[Bob]

Hi, I am using nRF5_SDK_15.2.0_9412b96 and the IDE is IAR.

[Hung Bui]

Have you followed the tutorial and completed all the steps defined in the tutorial ? 
The code you pointed to was from one of the customer, not from us. The definition of his ble_os_t struct is not provided, we don't have characteristic1_value_write_handler in our ble_os_t  in the tutorial. 
I would suggest you to follow the tutorial, and then have a look at the ble_app_uart example in the SDK. It's a good place to start after completed the tutorial.