MAC Tx power set in CC2530(Z stack 2.5.0)

By Checking using Debugger, I believe TXPOWER is set to 0xD5? but the code set it to 0xFF? I am not sure what is wrong with me?

Rui

Thanks Harry:

There are different places to adjust Tx power, in PHY and in MAC layer respectively, and they seems to use different table?

At least I found ZMacTransmitPower_t which is a enum, and macRadioDefsTxPwrBare[] which is Tx lookup table.

And what is the difference between MAC_PHY_TRANSMIT_POWER_SIGNED and MAC_PHY_TRANSMIT_POWER?

I am a little bit confused by those, so if there is any unified API(ZMacSetTransmitPower as in your example?), If I want to simply set Tx to max 4.5dbm, which value should I put?

Thanks'

Rui

Thanks, I just feel that ZMacTransmitPower_t is little bit confusing compared with the table, for example, TX_PWR_PLUS_19 indicates it is 19, and since it is -1dbm unit, so it is actually -19dbm? then largest Tx power could be TX_PWR_MINUS_22 = 22dbm? However, the max Tx is 4.5dbm, right?

I just don't understand the match between the value and real Tx power.

Thanks

Rui

hi here i added my changed codei. i didnt get the result

and i downloaded the program in demo EB mode ...

uint8 ZMacSetTransmitPower( ZMacTransmitPower_t TX_PWR_MINUS_18 )
{
return MAC_MlmeSetReq( ZMacPhyTransmitPowerSigned, &TX_PWR_MINUS_18 );
}

i// just changer TX_PWR_MINUS_18

typedef enum
{
TX_PWR_MINUS_22 = -22,
TX_PWR_MINUS_21,
TX_PWR_MINUS_20,
TX_PWR_MINUS_19,
TX_PWR_MINUS_18 = -18,
TX_PWR_MINUS_17,
TX_PWR_MINUS_16,
TX_PWR_MINUS_15,
TX_PWR_MINUS_14,
TX_PWR_MINUS_13,
TX_PWR_MINUS_12,
TX_PWR_MINUS_11,
TX_PWR_MINUS_10,
TX_PWR_MINUS_9,
TX_PWR_MINUS_8,
TX_PWR_MINUS_7,
TX_PWR_MINUS_6,
TX_PWR_MINUS_5,
TX_PWR_MINUS_4,
TX_PWR_MINUS_3,
TX_PWR_MINUS_2,
TX_PWR_MINUS_1,
TX_PWR_ZERO,
TX_PWR_PLUS_1,
TX_PWR_PLUS_2,
TX_PWR_PLUS_3,
TX_PWR_PLUS_4,
TX_PWR_PLUS_5,
TX_PWR_PLUS_6,
TX_PWR_PLUS_7,
TX_PWR_PLUS_8,
TX_PWR_PLUS_9,
TX_PWR_PLUS_10,
TX_PWR_PLUS_11,
TX_PWR_PLUS_12,
TX_PWR_PLUS_13,
TX_PWR_PLUS_14,
TX_PWR_PLUS_15,
TX_PWR_PLUS_16,
TX_PWR_PLUS_17,
TX_PWR_PLUS_18,
TX_PWR_PLUS_19
} ZMacTransmitPower_t;

please tell me wats the problem in it ?

Hi Lakshmanan,

I would like to suggest you to use another API macRadioSetTxPower as the followings:

/**************************************************************************************************
 * @fn          macRadioSetTxPower
 *
 * @brief       Set transmitter power of the radio.
 *
 * @param       txPower - the minus dBm for power but as a postive integer (or if configured
 *                        for it, txPower is the raw register value). If PA/LNA is installed
 *                        then txPower becomes positive dBm.
 *
 * @return      none
 **************************************************************************************************
MAC_INTERNAL_API void macRadioSetTxPower(uint8 txPower)

hi yikai

where i have to fetch these code ??

in Zmac.c ?? or any other ?

Dear All

I wanted to change the TX Power during the course of operation rather than fixing it in the beginning of application(using zstack for msp430f2618).

Suggest the best way to do it.

Adarsh

yup i found that API in mac- radio

how i can change  the value ??

 for 2 meter wat is the TX power value ?

Hi Lakshmanan,

This API is in mac_radio.c and I apply this API in my zcl_XXX_init() of zcl_xxx.c. If you are using SampleAPP, you would like to apply it in SampleApp_Init() of SampleApp.c.

Hi Lakshmanan,

I have posted the meaning of parameter txPower. Re-post it in the followings:

 * @param       txPower - the minus dBm for power but as a postive integer (or if configured
 *                        for it, txPower is the raw register value). If PA/LNA is installed
 *                        then txPower becomes positive dBm.

hi yiki

can i set value for txPower like this ?

void SampleApp_Init( uint8 task_id )
{
  SampleApp_TaskID = task_id;
  SampleApp_NwkState = DEV_INIT;
  SampleApp_TransID = 0;
uint8 txPower = 0x45;

}

my device should transmit data with in 2 meter only

by only this setting txPower= XXXX; will it be possible ???

possible means ,can me tell me the value for XXXX for 2 meter ??

thnks for ur advices ..

i am a graduate student and new to this module too

Hi,

For example, if your module is cc2530 with PA cc2590 on it, you can use "macRadioSetTxPower(16);" to set the txPower to 16dbm. If your device is only 2 meter away, why do you want to change txPower?

 have two base stations (CC2530 ) .. placed in separate room ... each base is allowed to transmit data with in  particular room ... for tat only i am designing cod e

hi

i changed

MAC_INTERNAL_API uint8 macRadioSetTxPower(18)

in mc_radio .. here the errors i am getting

Error while running C/C++ Compiler
Error[Pe020]: identifier "txPower" is undefined C:\Texas Instruments\ZStack-CC2530-2.5.1a\Components\mac\low_level\srf04\mac_radio.c 286
Error[Pe020]: identifier "txPower" is undefined C:\Texas Instruments\ZStack-CC2530-2.5.1a\Components\mac\low_level\srf04\mac_radio.c 277
Error[Pe020]: identifier "txPower" is undefined C:\Texas Instruments\ZStack-CC2530-2.5.1a\Components\mac\low_level\srf04\mac_radio.c 251
Error[Pe141]: unnamed prototyped parameters not allowed when body is present C:\Texas Instruments\ZStack-CC2530-2.5.1a\Components\mac\low_level\srf04\mac_radio.c 239
Error[Pe147]: declaration is incompatible with "__banked_func __xdata_reentrant uint8 macRadioSetTxPower(uint8)" (declared at line 104 of "C:\Texas  C:\Texas Instruments\ZStack-CC2530-2.5.1a\Components\mac\low_level\srf04\mac_radio.c 239

Hi,

You are not familiar with C programming, are you? If you want to set txPower to 18dbm, you need to insert "macRadioSetTxPower(18);" at where you want to change it.

i am new to this Z stack , cc2530 , smartfr05

u r correct .. am a biomedical engg student .. i am not familiar with programming

help to solve my prob

tell me exactly where i have to change it :)

Which ZStack example do you use?

sampleApp.c

1.Find the SampleApp_Init function, which should be at line 173 in the SampleApp.c

2.Add a new line "macRadioSetTxPower(18);" after "aps_AddGroup( SAMPLEAPP_ENDPOINT, &SampleApp_Group );"

This is all I can help.

hi still i cannot restrict the TX power ...help me ??

am using sampleApp.c

PA/LNA means what ??

PA stands for power amplifier.

LNA stands for low noise amplifier.