如果我们要使用高级 RX 命令而不是标准 RX 命令接收标准数据包格式的数据包，该方案也可行，并且命令添加方式与第 2.1.3 节所述高级 TX 命令的添加方式一致。以下代码示例展示了如何使用高级 RX 命令接收标准数据包。此外，可以将 MAX_LENGTH 从 255 更改为 3，以启用数据包长度过滤。

1:   //--------------------------------------------------------------------------------------------
2:   // Receive Standard Packet Format with CMD_PROP_RX_ADV (1 Length Byte)
3:   //--------------------------------------------------------------------------------------------
4:   // Defines
5:   #define DATA_ENTRY_HEADER_SIZE  8   // Constant header size of a Generic Data Entry
6:   #define NUM_DATA_ENTRIES        2   // NOTE: Only two data entries supported
7:   #define CRC                     2   // 2 if .rxConf.bIncludeCrc = 0x1, 0 otherwise
8:   #define RSSI                    1   // 1 if .rxConf.bAppendRssi = 0x1, 0 otherwise
9:   #define TIMESTAMP               4   // 4 if .rxConf.bAppendTimestamp = 0x1, 0 otherwise
10:  #define STATUS                  1   // 1 if .rxConf.bAppendStatus = 0x1, 0 otherwise
11:  #define LENGTH_FIELD            1   // RF_cmdPropRx.rxConf.bIncludeHdr = 0x1
12:  #define MAX_LENGTH              255 // Max length the radio will accept
13:  #define NUM_APPENDED_BYTES      LENGTH_FIELD + CRC + RSSI + TIMESTAMP + STATUS
14:
15:  uint8_t packet[MAX_LENGTH + NUM_APPENDED_BYTES - LENGTH_FIELD]; // Length stored in 
16:  uint8_t packetLength;                                           // packetLength
17:  static void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e);
18:
19:  static RF_Object rfObject;
20:  static RF_Handle rfHandle;
21:
22:  static uint8_t rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES, MAX_LENGTH,
23:                                   NUM_APPENDED_BYTES)]__attribute__((aligned(4)));
24:  static dataQueue_t dataQueue;
25:  static rfc_dataEntryGeneral_t* currentDataEntry;
26:  static uint8_t* packetDataPointer;
27:  rfc_propRxOutput_t rxStatistics;
28:  uint16_t crc16;
29:  int8_t rssi;
30:  uint32_t timestamp;
31:  uint8_t status;
32:
33:  void *mainThread(void *arg0)
34:  {
35:      RF_Params rfParams;
36:      RF_Params_init(&rfParams);
37:
38:      if(RFQueue_defineQueue(&dataQueue, rxDataEntryBuffer, sizeof(rxDataEntryBuffer), 
39:                             NUM_DATA_ENTRIES, MAX_LENGTH + NUM_APPENDED_BYTES))
40:      {
41:          while(1);
42:      }
43:
44:      RF_cmdPropRxAdv.pktConf.bCrcIncHdr = 0x1; // Settings that must change to support
45:      RF_cmdPropRxAdv.hdrConf.numHdrBits = 0x8; // the standard packet format
46:      RF_cmdPropRxAdv.hdrConf.numLenBits = 0x8;
47:
48:      RF_cmdPropRxAdv.pktConf.bRepeatOk = 0x1; // Application specific settings
49:      RF_cmdPropRxAdv.pktConf.bRepeatNok = 0x1;
50:      RF_cmdPropRxAdv.rxConf.bAutoFlushIgnored = 0x1;
51:      RF_cmdPropRxAdv.rxConf.bAutoFlushCrcErr = 0x1;
52:      RF_cmdPropRxAdv.maxPktLen = MAX_LENGTH;
53:      RF_cmdPropRxAdv.pQueue = &dataQueue;
54:
55:      // Settings to modify if going from a PHY that uses the standard RX command
56:      // to use the advanced RX command
57:      RF_cmdPropRxAdv.condition.rule = 0x1;
58:      RF_cmdPropRxAdv.pktConf.bUseCrc = 0x1;
59:      RF_cmdPropRxAdv.rxConf.bIncludeHdr = 0x1;
60:      RF_cmdPropRxAdv.endTrigger.triggerType = 0x1;
61:
62:      RF_cmdPropRxAdv.rxConf.bIncludeCrc = 0x1; // Optional bytes to append
63:      RF_cmdPropRxAdv.rxConf.bAppendRssi = 0x1;
64:      RF_cmdPropRxAdv.rxConf.bAppendTimestamp = 0x1;
65:      RF_cmdPropRxAdv.rxConf.bAppendStatus = 0x1;
66:
67:      RF_cmdPropRxAdv.pOutput = (uint8_t*)&rxStatistics; // Optional (for debug)
68:
69:      rfHandle = RF_open(&rfObject, &RF_prop, (RF_RadioSetup*)&RF_cmdPropRadioDivSetup,
70:                         &rfParams);
71:      RF_postCmd(rfHandle, (RF_Op*)&RF_cmdFs, RF_PriorityNormal, NULL, 0);
72:      RF_runCmd(rfHandle, (RF_Op*)&RF_cmdPropRxAdv, RF_PriorityNormal,
73:                &callback, RF_EventRxEntryDone);
74:      while(1);
75:  }
76:

77:  //--------------------------------------------------------------------------------------------
78:  // Callback for Receiving Standard Packet Format with CMD_PROP_RX_ADV (1 Length Byte)
79:  //--------------------------------------------------------------------------------------------
80:  void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
81:  {
82:      if(e & RF_EventRxEntryDone)
83:      {
84:          currentDataEntry = RFQueue_getDataEntry();
85:
86:         packetLength = *(uint8_t*)(&currentDataEntry->data);
87:         packetDataPointer = (uint8_t*)(&currentDataEntry->data + LENGTH_FIELD);
88:
89:         memcpy(packet, packetDataPointer, (packetLength + NUM_APPENDED_BYTES - LENGTH_FIELD));
90:
91:         crc16 = ((uint16_t)(packet[packetLength + 0] << 8) +
92:                  (uint16_t)(packet[packetLength + 1] << 0));
93:
94:         rssi = packet[packetLength + 2];
95:
96:         timestamp = ((uint32_t)(packet[packetLength + 3] << 0 ) +
97:                      (uint32_t)(packet[packetLength + 4] << 8 ) +
98:                      (uint32_t)(packet[packetLength + 5] << 16) +
99:                      (uint32_t)(packet[packetLength + 6] << 24));
100:
101:        status = packet[packetLength + 7];
102:
103:        RFQueue_nextEntry();
104:     }
105: }