topic Re: How to Change the Transmit Power in Mac library in 8-bit Microcontrollers

How to Change the Transmit Power in Mac library

galen — Tue, 28 Aug 2007 19:15:01 GMT

Hi,

I tried to setup the network base on the beekit's MAC library. Now I have a problem about how and where to change the transmit output power? I don't see any function or primitive about it? Would you please provide some demo program or show me a snippet of how to adjust the transmit power?

Thanks for your attention!

Best Regards

Galen

Re: How to Change the Transmit Power in Mac library

Ware — Thu, 29 Oct 2020 08:44:47 GMT

If you look in the "PhyPlmeSetCurrentChannelRequest()" function, you'll see how Freescale (or Mindteck) does it:

Code:

// Write PA level for the channel.
  MC1319xDrv_ReadSpiSync(ABEL_reg12, &PowerLevel);
  PowerLevel &= 0xFF00;
  PowerLevel |= tmpLevel;
  MC1319xDrv_WriteSpiSync(ABEL_reg12, PowerLevel);

Where tmpLevel is the new PA Level (transmit output power).

Regards,

- Ware

Re: How to Change the Transmit Power in Mac library

Mads — Sat, 01 Sep 2007 15:46:29 GMT

To change the transmit power, you just have to modify the initialization setting.

you should not change the PHY source code or attempt to write directly to the radio.

The file Nv_data.c contains the PA setting. change the 0xBC in line 0xFF for maximum power.

Note that transmitting with too high power might make your product not pass FCC or ETSI qualification.

BR,

Mads