CCS/AWR1843BOOST: Where can I find the detailed description of Output Data Format for lab00007 Medium Range Radar

Hi,

The data transmit over UART is taken care of in the MmwDemo_mboxReadTask in the mss_main.c file. You can have a look at the UART_writePolling function calls to see exactly how the data is being sent.

The output is created by MRR_DSS_SendProcessOutputToMSS function running on the DSS, and sent to the MSS to be transmitted over UART.

Here are the MRR specific details summarized:

1. There is one message per frame. The message always starts with a message header of fixed size, see MmwDemo_output_message_header in src/common/mrr_output.h.

2. The header specifies totalPacketLen, which is the size of the message, message header included.

3. The message body comprises of TLVs. numTLVs in the body are specified in the message header.

4. Each TLV starts with a TLV header of fixed size specifying type of TLV and length of TLV (see MmwDemo_output_message_tl). This length is of the TLV body only.

5. The TLV body for MRR starts with MmwDemo_output_message_dataObjDescr, containing the number of elements in the array to follow and the Q format of the data.

6. The rest of the TLV body contains an array of the appropriate struct (MmwDemo_detectedObjForTx_t, trackingReportForTx_t, clusteringDBscanReportForTx in src/dss/dss_datapath.h file). The length of this array is given by the numDetetedObj field in the data object descriptor sent at the very beginning of the TLV body. Note that this can be different from numDetetedObj in the message body.

I'm attaching a sample file of MRR TLV data parsed into json format for your reference.

mrr_parsed.txt

Regards

Aayush

Hi,

This is the data corresponding to obj->parkingAssistBins in MRR_DSS_SendProcessOutputToMSS function in dss_main.c. To be honest, I haven't looked into what this is used for.

Regards,

Aayush