请问大师，如何在ZStack-CC2530-2.5.1a中修改发射功率

一般都是通过 macRadioSetTxPower来 设置发射功率的

* @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 The minus dBm for power actually set according to what is possible according to
the build and run-time configuration set.

谢谢答复！

我在程序中修改过的地方见下面程序。大黑体为修改的地方。

1，我是使用CC2531  usb dongle  硬件，通过smart  RF packet sniffer 软件，查看RSSI (dBm) 值。可以如此测试吗？  但是看RSSI值，好像没效果，为何？

2，程序中我的修改方法正确吗？如在程序中如此修改，是否表示发射功率以后均以最大功率发送。

（我在网上看到，有个人说要

先在mac_radio_defs.h中，

去掉//#define HAL_MAC_USE_REGISTER_POWER_VALUES“//”

后

在ZMacInit();后面添加如下代码：

{
uint8 value = 0xF5;
MAC_MlmeSetReq(MAC_PHY_TRANSMIT_POWER, &value);
}

正确吗？）

3，如果不使用我添加的语句，协议栈的发射功率是动态变化的吗？

如可能的话，请逐条回答，先谢谢了。

#ifndef HAL_MAC_USE_REGISTER_POWER_VALUES
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

MAC_INTERNAL_API uint8 macRadioSetTxPower(uint8 txPower)
{
  halIntState_t  s;
#if defined MAC_RUNTIME_CC2591 || defined MAC_RUNTIME_CC2590
  const uint8 CODE *pTable = macRadioDefsTxPwrTables[macRadioDefsRefTableId >> 4];
#elif defined HAL_PA_LNA || defined HAL_PA_LNA_CC2590
  const uint8 CODE *pTable = macRadioDefsTxPwrTables[0];
#else
  const uint8 CODE *pTable = macRadioDefsTxPwrBare;
#endif

  /* if the selected dBm is out of range, use the closest available */
  if ((int8)txPower > (int8)pTable[MAC_RADIO_DEFS_TBL_TXPWR_FIRST_ENTRY])
  {
    /* greater than base value -- out of table range */
    txPower = pTable[MAC_RADIO_DEFS_TBL_TXPWR_FIRST_ENTRY];
  }
  else if ((int8)txPower < (int8)pTable[MAC_RADIO_DEFS_TBL_TXPWR_LAST_ENTRY])
  {
    /* smaller than the lowest power level -- out of table range */
    txPower = pTable[MAC_RADIO_DEFS_TBL_TXPWR_LAST_ENTRY];
  }

  /*
   *  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);
  /* When calculating index to the power register value table,
   * either txPower (of uint8 type) has to be explicitly type-casted to int8
   * or the subtraction expression has to be type-casted to uint8 to work
   * with the integral promotions.
   * The latter is more code size efficient and hence the latter is used.
   */
  {
    uint8 index = pTable[MAC_RADIO_DEFS_TBL_TXPWR_FIRST_ENTRY] - txPower
      + MAC_RADIO_DEFS_TBL_TXPWR_ENTRIES;
    reqTxPower = pTable[index];
  }
  HAL_EXIT_CRITICAL_SECTION(s);

  /* update the radio power setting */

  reqTxPower = 0xf5;                       //xwp   添加的

  macRadioUpdateTxPower();

  return txPower;
}

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

MAC_INTERNAL_API uint8 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);
  reqTxPower = 0xf5;                                     //xwp    //xwp   添加的
  /* update the radio power setting */
  macRadioUpdateTxPower();

  return txPower;
}

#endif