關於cc2541+cc2591的連線距離

我的cc2541+cc2591在空曠時60米以上的收發(可連線)都沒問題,

當遇到屏蔽時, 廣播仍然可以傳送到60米外, 手機掃得到但無法連線,

用ble112開發版在我的藍芽裝置旁監聽封包,

卻可以收到手機發出嘗試對cc2541連線的封包,

不過cc2541卻一直沒有回應,

請問這個是什麼問題?

是我PA/LNA設定錯誤嗎?

相關的代碼如下

Init I/O
{
    // Default State of I/O are output and low
    P0SEL = 0; // Configure Port 0 as GPIO
    P1SEL = 0; // Configure Port 1 as GPIO
    P2SEL = 0; // Configure Port 2 as GPIO
    
    P0DIR = 0xFE; // Port 0 pins P0.0 as input (buttons), others as output
    P1DIR = 0xF3; // All port 1 pins (P1.0-P1.7) as output
    P2DIR = 0x1F; // All port 1 pins (P2.0-P2.4) as output

    P0 = 0;    // All pins on port 0 to low
    P1 = 0;    // All pins on port 1 to low
    P2 = 0;    // All pins on port 2 to low
}

// Enable PA/LNA
{
    HCI_EXT_SetTxPowerCmd(HCI_EXT_TX_POWER_0_DBM);
    HCI_EXT_SetRxGainCmd(HCI_EXT_RX_GAIN_HIGH);
    HCI_EXT_ExtendRfRangeCmd();
}