CC1310: how to set RSSI threshold in 15.4 stack

Yonghua Pan

Intellectual 1900 points

Part Number: CC1310

Hi,

As the title, could you let me know how to set the RSSI threshold in 15.4 stack?

It didn't work with the API ApiMac_attribute_rssiThreshold.

What's the meaning of rssiThr in mac_setting.c?

Thanks.

Regards,

Yonghua

over 6 years ago

0 Severin Suveren over 6 years ago

TI__Mastermind 23730 points

Hi Yonghua,

Which SDK version are you using?

What RSSI threshold are you testing with? And how do you test this?

0 Severin Suveren over 6 years ago in reply to Severin Suveren

TI__Mastermind 23730 points

Any updates?

0 Yonghua Pan over 6 years ago in reply to Severin Suveren

TI__Intellectual 1900 points

Hi, Edvard,

SDK is v2.20, the test case is as below:

Generating the interference on 916.0MHz with RSSI about -72dBm, neither coordinator nor sensor is able to send out packets successfully.

In mac_setting.c, there are two structures RF_cmdPropCs and RF_cmdPropCsSlotted, their rssiThr by default is -83dBm, if changed it to -63dBm, both coordinator and sensor can send out packets successfully.

But it doesn't work if changing rssi Threshold with ApiMac_attribute_rssiThreshold, does it mean that this API is not useful?

Regards,

Yonghua

0 Severin Suveren over 6 years ago in reply to Yonghua Pan

TI__Mastermind 23730 points

Just so I understand you correctly, you are calling ApiMac_attribute_rssiThreshold() with a threshold of -63 dBm, but does not work. If you manually set the threshold in the Carrier Sense commands, it works?

0 Hector_r over 6 years ago in reply to Yonghua Pan

TI__Genius 12415 points

Hi Yonghua,

the attribute ApiMac_attribute_rssiThreshold is only used in LBT and not in CSMA so the only way to modify the RSSI threshold for CSMA is by modifiying it directly from the mac_setting.c file as you have already mentioned

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CC1310: how to set RSSI threshold in 15.4 stack