Enabling the Support of CC259x PA/LNA with Z-Stack-Home

Introduction

This wiki page describes how to enable and interface the external 2.4GHz range extenders with CC2530, CC2531, CC2533 and CC2538 RF SoC devices running the Z-Stack Home 1.2.x. Z-Stack Home-1.2.x out of box supports interfacing any one of the following PA/LNA device with the CC253x RF SoC devices.

• CC2590
• CC2591
• CC2592

Enabling Software Support

Support of range extenders is not enabled out of box. In order to activate the support of a range extender appropriate compile option needs to be enabled at compile time. Only a single range extender can be supported at a given time which needs to be selected at compile time.

Following table shows the compile option to be enabled corresponding to the range extender device being used.

Device	Compile Option
CC2592	HAL_PA_LNA_CC2592
CC2591	HAL_PA_LNA
CC2590	HAL_PA_LNA_CC2590

In addition to enabling the compile option, the application also needs to set the output power to desired transmit power value by calling the API ZMacSetTransmitPower(). A good place to call this API is from the application initialization function. The API ZMacSetTransmitPower() is decribed below.

Z-Stack API: ZMacSetTransmitPower()

Description:
This function allows the application to request the MAC to set the transmit power level.

Prototype:
uint8 ZMacSetTransmitPower( ZMacTransmitPower_t level );

Parameter Details:
level –Valid power level setting as defined by enumeration “ZMacTransmitPower_t” in the file ZMAC.h.

Return:
ZMacSuccess -if the MAC PIB attribute MAC_PHY_TRANSMIT_POWER_SIGNED is found.
ZMacUnsupportedAttribute –if MAC_PHY_TRANSMIT_POWER_SIGNED is not found.

Example below shows how to set the transmit power when CC259x PA-LNA is used to 19dBm for Sample Switch Sample Application within Z-Stack-Home-1.2.x release

void zclSampleSw_Init( byte task_id )
{
  zclSampleSw_TaskID = task_id;

..
..

  
#if defined (OTA_CLIENT) && (OTA_CLIENT == TRUE)
  // Register for callback events from the ZCL OTA
  zclOTA_Register(zclSampleSw_TaskID);
#endif

// Set the transmit power level
ZMacSetTransmitPower(TX_PWR_PLUS_19);
  
}

Hardware Interface

This section provides the pin Mapping to the External PA LNA from Out of box Z-Stack Home-1.2.x. It is recommended to follow these interface pins.

Adding PA/LNA to CC2530/1/3

Interfacing CC2590/1

Following table shows connection between the CC2590/1 with the CCCC2530/1/3 chosen when building the Z-Stack software support for the range extender. Also, refer to the application note AN086 for more details.

CC2590/1 Pin	CC2530/1/3 Pin
EN	P1_4
PAEN	P1_1
HGM	P0_7
RF_P	RF_P
RF_N	RF_N

Interfacing CC2592

Following table shows connection between the CC2592 with the CCCC2530/1/3 chosen when writing the Z-Stack software support for the range extender. Also refer to the document Using CC2592 Front End with CC2530 for more details.

CC2592 Pin	CC2530/1/3 Pin
EN	P1_0
PAEN	P1_1
HGM	P0_7
RF_P	RF_P
RF_N	RF_N

Adding PA/LNA to CC2538

Interfacing CC2590/1/2

Following table shows connection between the CC2590/1/2 with the CCCC2538 chosen when writing the Z-Stack software support for the range extender. Also refer to the document Using CC2592 Front End with CC2538 for more details.

CC259x Pin	CC2538 Pin
EN	PC2
PAEN	PC3
HGM	PD2
RF_P	RF_P
RF_N	RF_N

Interfacing Other PA/LNA

Additionally Z-Stack-Home-1.2.x also supports the Skyworks SE2431L PA/LNA with CC2530/1/3. To enable the support of the SE2431L the compile option HAL_PA_LNA_SE2431L should be enabled. SE2431L is currently not supported with the CC2538 RF-SoC. For more details (on hardware interfacing, etc) please refer to the document CC2530 With Skyworks’ SE2431L Range Extender Front End

Conclusion

Wiki page described how to enable and interface the external range extenders with CC253x devices running the Z-Stack Home 1.2.x. Reference section provides links to various application notes providing further details on interfacing the range extenders.

References

[1]. Using CC2592 Front End with CC2530

[2]. AN130 - Using CC2592 Front End with CC2538 (swra477)

[3]. AN086 -- Using CC2591 Front End with CC2530 and CC2531 (swra308)

[4]. CC2590 – 2.4GHz Range Extender (http://www.ti.com/CC2590)

[5]. CC2591 – 2.4GHz Range Extender (http://www.ti.com/CC2591)

[6]. CC2592 – 2.4GHz Range Extender (http://www.ti.com/product/cc2592)

[7]. SE2431L (http://www.skyworksinc.com/Product.aspx?ProductID=933)