如何使用ZStack——输出功率编程设置

来源：互联网发布：淘宝短信怎么退订编辑：程序博客网时间：2024/04/30 01:32

转自http://hi.baidu.com/ychyichun/item/d588f8fa8dd669c30cd1c802

RF输出功率可以由RF寄存器TRCTRLL.PA_LEVEL控制，具体设置参数可参考下表：

ZStack中有如下定义：

const uint8 CODE macRadioDefsTxPowerTable[] =
{
/*   0 dBm */   0x5F,   /* characterized as -0.4 dBm in datasheet */
/* -1 dBm */   0x3F,   /* characterized as -0.9 dBm in datasheet */
/* -2 dBm */   0x3F,
/* -3 dBm */   0x1B,   /* characterized as -2.7 dBm in datasheet */
/* -4 dBm */   0x17,   /* characterized as -4.0 dBm in datasheet */
/* -5 dBm */   0x13,
/* -6 dBm */   0x13,   /* characterized as -5.7 dBm in datasheet */
/* -7 dBm */   0x13,
/* -8 dBm */   0x0F,   /* characterized as -7.9 dBm in datasheet */
/* -9 dBm */   0x0F,
/* -10 dBm */   0x0F,
/* -11 dBm */   0x0B,   /* characterized as -10.8 dBm in datasheet */
/* -12 dBm */   0x0B,
/* -13 dBm */   0x0B,
/* -14 dBm */   0x0B,
/* -15 dBm */   0x07,   /* characterized as -15.4 dBm in datasheet */
/* -16 dBm */   0x07,
/* -17 dBm */   0x07,
/* -18 dBm */   0x07,
/* -19 dBm */   0x06,   /* characterized as -18.6 dBm in datasheet */
/* -20 dBm */   0x06,
/* -21 dBm */   0x06,
/* -22 dBm */   0x06,
/* -23 dBm */   0x06,
/* -24 dBm */   0x06,
/* -25 dBm */   0x03    /* characterized as -25.2 dBm in datasheet */
};

缺省设置为0dBm，即

#define MAC_RADIO_TX_POWER_DEFAULT 0x1F

macPhyTxPower = MAC_RADIO_TX_POWER_DEFAULT;

MAC_RADIO_SET_TX_POWER(macPhyTxPower);

至于macRadioDefsTxPowerTable中0dBm为0x5F而不是0x1F，是因为0x1F只代表TRCTRLL的低5位即TRCTRLL.PA_LEVEL，而0x5F则包含了高3位的缘故。