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     BALTECH Docs | 
    C API for BALTECH SDK
   
    
   
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| brp_errcode brp_BlePeriph_GetCharacteristic | ( | brp_protocol | protocol, | 
| unsigned | CharacteristicNdx, | ||
| brp_buf * | CurrentValue, | ||
| size_t * | CurrentValue_len, | ||
| brp_mempool * | mempool | ||
| ) | 
This command retrieves the current value of a characteristic.
A characteristic will be initialized to 00 00 ... 00 when calling brp_BlePeriph_Enable() and will be modified by either the BRP host ( brp_BlePeriph_SetCharacteristic()) or the BLE Central (via a write to the characteristic).
| [in] | protocol | used to execute the command | 
| [in] | CharacteristicNdx | The index of the characteristic to be retrieved in the Characteristics array passed to brp_BlePeriph_DefineService() | 
| [out] | CurrentValue | |
| [out] | CurrentValue_len | |
| [in] | mempool | is used to store response data. Maybe NULL to use an internal mempool, in this case the data is only available until another command uses the internal mempool |