Z-Stack Transmit Power Configuration CC2530+CC2591 Backwards..

Rafael Amadei

Other Parts Discussed in Thread: CC2591, CC2530

Hi all,

I'm working with a Zigbee network using CC2530 + CC2591 as ZEDs, ZRTs and a ZCO.

When I configure the TX power with "MAC_MlmeSetReq(MAC_PHY_TRANSMIT_POWER,&txpower)", it looks like the configuration values on the table are backwards, because I have more TX power with a lower value.

This is the configuration code:

#ifdef HAL_PA_LNA
uint8 txpower= 0x55;
#else
uint8 txpower= 0xF5;
#endif

MAC_MlmeSetReq(MAC_PHY_TRANSMIT_POWER,&txpower);

Is this normal?

Did anyone see this behavior too?

Thanks!

over 9 years ago

0 YiKai Chen over 9 years ago

Guru 735695 points

To set TX power, I would suggest you to use API macRadioSetTxPower. For example, you can use macRadioSetTxPower(19) to set TX power of CC2530-CC2591 to 19 dbm.

0 Rafael Amadei over 9 years ago in reply to YiKai Chen

Intellectual 350 points

Thanks Yukai for your answer,

Just to be sure, the dBm TX power optional values are those mentioned on Table 4.6 in www.ti.com.cn/.../swra308a.pdf ?

For example, the min value would be macRadioSetTxPower(10) and the max value should be macRadioSetTxPower(20)?

Thanks for your time!

0 YiKai Chen over 9 years ago in reply to Rafael Amadei

Guru 735695 points

Yes, that's correct.

0 Rafael Amadei over 9 years ago in reply to YiKai Chen

Intellectual 350 points

Ok, Thanks!

Best regards

0 YiKai Chen over 9 years ago in reply to Rafael Amadei

Guru 735695 points

You are welcome.

0 Rafael Amadei over 9 years ago in reply to YiKai Chen

Intellectual 350 points

Dear Yikai,

We have tested the two power configuration functions. They were tested using: 10 and 20 with macRadioSetTxPower(value) , F5 and 55 with MAC_MlmeSetReq(MAC_PHY_TRANSMIT_POWER, &value).

The parameters evaluated were LQI and TX_Power from 50 messages sent.

The results were:

After seen these results, is there any reason to use macRadioSetTxPower(20) MAC_MlmeSetReq(MAC_PHY_TRANSMIT_POWER, &value) with value=F5?

Thanks!

0 YiKai Chen over 9 years ago in reply to Rafael Amadei

Guru 735695 points

I don't understand your question well. Do you ask if you can set TX power to 20 dbm?

0 Rafael Amadei over 9 years ago in reply to YiKai Chen

Intellectual 350 points

Sorry, I wrote the question in a wrong way.

After seen these results, is there any reason to prefer use macRadioSetTxPower(20) instead MAC_MlmeSetReq(MAC_PHY_TRANSMIT_POWER, &value) with value=F5?

I ask this because I saw a better performance with the other function using the minimum TX_POWER value than the function you suggest to use using the maximum TX_POWER value.

I hope I made myself clear.

Thanks!

0 YiKai Chen over 9 years ago in reply to Rafael Amadei

Guru 735695 points

I would suggest you to use macRadioSetTxPower which can specify the output TX power in dbm.

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Z-Stack Transmit Power Configuration CC2530+CC2591 Backwards..