ADV DATA PARSER

Question

Hello, i am using NRF52840 board with SDK 15.2. I am trying to read data from an advertising packet and i was just wondering if anybody on here had a good parser i could potentially use to parse scan response data for softdevice 140 version 6.1. 
 - thank you

ovrebekk · Accepted Answer

Hi 
 I found the following code snippet in one of the examples: 
 /** * @brief Parses advertisement data, providing length and location of the field in case * matching data is found. * * @param[in] type Type of data to be looked for in advertisement data. * @param[in] p_advdata Advertisement report length and pointer to report. * @param[out] p_typedata If data type requested is found in the data report, type data length and * pointer to data will be populated here. * * @retval NRF_SUCCESS if the data type is found in the report. * @retval NRF_ERROR_NOT_FOUND if the data type could not be found. */ static uint32_t adv_report_parse(uint8_t type, uint8_array_t * p_advdata, uint8_array_t * p_typedata) { uint32_t index = 0; uint8_t * p_data; 
 p_data = p_advdata->p_data; 
 while (index < p_advdata->size) { uint8_t field_length = p_data[index]; uint8_t field_type = p_data[index + 1]; 
 if (field_type == type) { p_typedata->p_data = &p_data[index + 2]; p_typedata->size = field_length - 1; return NRF_SUCCESS; } index += field_length + 1; } return NRF_ERROR_NOT_FOUND; } 
 Basically you use it together with the various BLE_GAP_AD_TYPE_... defines to look for specific advertising fields in the advertising report, and if the field is found the function will return NRF_SUCCESS and store the data in the array pointed to by the last argument. 
 Best regards Torbjørn

ADV DATA PARSER

Top Replies