Question

在Z-STACK中怎样设置功率

Answer 1

/**************************************************************************************************
* @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).
*
* @return none
**************************************************************************************************
*/
#ifndef HAL_MAC_USE_REGISTER_POWER_VALUES
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

void macRadioSetTxPower(uint8 txPower)
{
halIntState_t s;

/* if the selected dBm is out of range, use the closest available */
if (txPower > MAC_RADIO_TX_POWER_MAX_MINUS_DBM)
{
txPower = MAC_RADIO_TX_POWER_MAX_MINUS_DBM;
}

/*
* Set the global variable reqTxPower. This variable is referenced
* by the function macRadioUpdateTxPower() to write the radio register.
*
* A lookup table is used to translate the power level to the register
* value.
*/
HAL_ENTER_CRITICAL_SECTION(s);
reqTxPower = macRadioDefsTxPowerTable[txPower];
HAL_EXIT_CRITICAL_SECTION(s);

/* update the radio power setting */
macRadioUpdateTxPower();
}

#else
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

void macRadioSetTxPower(uint8 txPower)
{
halIntState_t s;

/* same as above but with no lookup table, use raw register value */
HAL_ENTER_CRITICAL_SECTION(s);
reqTxPower = txPower;
HAL_EXIT_CRITICAL_SECTION(s);

/* update the radio power setting */
macRadioUpdateTxPower();
}

#endif