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WL1835MOD: BER Meter test

FFatima
Intellectual 440 points
Part Number: WL1835MOD

Hi,

I am using WL1835MODGB - I needed information on how to execute & get rx BER test result after initiating this test using Bluetopia stack. Could you please pass on the information?

https://www.ti.com/lit/an/swra750/swra750.pdf?ts=1681278885208&ref_url=https%253A%252F%252Fwww.google.com%252F

The commands to be executed are clear for the Bluez tool and not for the Bluetopia stack. Also, how to get the result of the BER meter test is also unclear. Please help clarify

Regards,

FF

 

  • 0
    TI__Intellectual 1145 points

    Hi FF,

    It is recommended to use HCI Tester for this test if you are not already. 

    I'm copying the code shown in 1.4.1 BER Test - Between Two WiLink Devices Step 2 below:

    Send_HCI_VS_DRP_Read_BER_Meter_Status 0xFD5B
Wait_HCI_Command_Complete_VS_DRP_Read_BER_Meter_Status_Event 5000, any, 
HCI_VS_DRP_Read_BER_Meter_Status, 0x00, &synched, &finished, any, &total_bits, &bit_errors, &packets
if finished== 0 then
 if synched == 0 then
 log"not synced yet %d count",count
 #Fail "no SYNC"
 else
 log"not finished yet %d packets, coutn %d",packets,count
 endif
 goto $l11
else
 BER = 1000000*bit_errors/total_bits
 log"BER is %d e-6 (%d bits out of %d)",1000000*bit_errors/total_bits,bit_errors,total_bits
 if BER > 100 then
 Fail "BER is too high"
 else
 pause "Finished"
 endif
 
endif

    Essentially you first send the command HCI_VS_DRPb_BER_Meter_Start which starts the BER function which you are already aware of.

    After waiting for the required duration (for the appropriate number of packets to be sent), you call the Send_HCI_VS_DRP_Read_BER_Meter_Status in the code above followed by HCI_VS_DRP_Read_BER_Meter_Status which returns the results into the following variables which can be used to calculate the BER, given by dividing bit_errors by the total_bits.