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cc2530通信距离问题

协议栈1.2.2.a

1、TXPOWER寄存器设置为0xf5是否为最大发射功率输出?那么接收功率这个是默认最大还是可以设置?

2、目前使用信道25测试通信距离,接发(不带pa)均使用胶棒天线实测有70m左右,但是协调器端换成FPC天线,通信距离只有10m左右,FPC天线无源属性这些都是匹配过的,想请问信道会不会影响同喜距离?FPC天线是否比胶棒天线效果差很多?

3、ubiqua上面Frame显示的link quality是否有参考价值,例如是协调器广播出来的数据帧,那么对应的link quality是否为协调器的参考RSSI?

谢谢!!!

  • 1.0xf5是最大发射功率,具体的值可以看下面
    const uint8 CODE macRadioDefsTxPwrBare[] = { 3, /* tramsmit power level of the first entry */ (uint8)(int8)-22, /* transmit power level of the last entry */ /* 3 dBm */ 0xF5, /* characterized as 4.5 dBm in datasheet */ /* 2 dBm */ 0xE5, /* characterized as 2.5 dBm in datasheet */ /* 1 dBm */ 0xD5, /* characterized as 1 dBm in datasheet */ /* 0 dBm */ 0xD5, /* characterized as 1 dBm in datasheet */ /* -1 dBm */ 0xC5, /* characterized as -0.5 dBm in datasheet */ /* -2 dBm */ 0xB5, /* characterized as -1.5 dBm in datasheet */ /* -3 dBm */ 0xA5, /* characterized as -3 dBm in datasheet */ /* -4 dBm */ 0x95, /* characterized as -4 dBm in datasheet */ /* -5 dBm */ 0x95, /* -6 dBm */ 0x85, /* characterized as -6 dBm in datasheet */ /* -7 dBm */ 0x85, /* -8 dBm */ 0x75, /* characterized as -8 dBm in datasheet */ /* -9 dBm */ 0x75, /* -10 dBm */ 0x65, /* characterized as -10 dBm in datasheet */ /* -11 dBm */ 0x65, /* -12 dBm */ 0x55, /* characterized as -12 dBm in datasheet */ /* -13 dBm */ 0x55, /* -14 dBm */ 0x45, /* characterized as -14 dBm in datasheet */ /* -15 dBm */ 0x45, /* -16 dBm */ 0x35, /* characterized as -16 dBm in datasheet */ /* -17 dBm */ 0x35, /* -18 dBm */ 0x25, /* characterized as -18 dBm in datasheet */ /* -19 dBm */ 0x25, /* -20 dBm */ 0x15, /* characterized as -20 dBm in datasheet */ /* -21 dBm */ 0x15, /* -22 dBm */ 0x05 /* characterized as -22 dBm in datasheet */ }; #endif

    2.距离差别这么大和信道没关系,应该是天线部分的问题

    3.link quality 不是直接对应RSSI值,二者有转换关系,可以看下手册23.10节的说明:www.ti.com.cn/.../swru191f.pdf