若要接收 2 个长度字节的标准数据包格式，需要修改相关设置，不能直接使用第 2.1.4 节中示例所示的设置。此外，需要更改一些定义和变量以及回调中的应用代码。需修改的代码位于第 11 行和第 12 行、第 15 行和第 16 行、第 46 行和第 47 行以及第 86-89 行。

1:   //--------------------------------------------------------------------------------------------
2:   // Receive Standard Packet Format with CMD_PROP_RX_ADV (2 Length Bytes)
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            2    // Changed from 1
12:  #define MAX_LENGTH              4093 // Changed from 255
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:  uint16_t packetLength; // Changed from uint8_t                     packetLength
17:  
18:  static void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e);
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 
45:                                                 // to support the standard format
46:      RF_cmdPropRxAdv.hdrConf.numHdrBits = 0x10; // Changed from 0x8
47:      RF_cmdPropRxAdv.hdrConf.numLenBits = 0x10; // Changed from 0x8
48:
49:      RF_cmdPropRxAdv.pktConf.bRepeatOk = 0x1;   // Application specific settings
50:      RF_cmdPropRxAdv.pktConf.bRepeatNok = 0x1;
51:      RF_cmdPropRxAdv.rxConf.bAutoFlushIgnored = 0x1;
52:      RF_cmdPropRxAdv.rxConf.bAutoFlushCrcErr = 0x1;
53:      RF_cmdPropRxAdv.maxPktLen = MAX_LENGTH;
54:      RF_cmdPropRxAdv.pQueue = &dataQueue;
55:
56:      // Settings to modify if going from a PHY that uses the standard RX command 
57:	 // to use the advanced RX command
58:      RF_cmdPropRxAdv.condition.rule = 0x1;
59:      RF_cmdPropRxAdv.pktConf.bUseCrc = 0x1;
60:      RF_cmdPropRxAdv.rxConf.bIncludeHdr = 0x1;
61:      RF_cmdPropRxAdv.endTrigger.triggerType = 0x1;
62:
63:      RF_cmdPropRxAdv.rxConf.bIncludeCrc = 0x1; // Optional bytes to append
64:      RF_cmdPropRxAdv.rxConf.bAppendRssi = 0x1;
65:      RF_cmdPropRxAdv.rxConf.bAppendTimestamp = 0x1;
66:      RF_cmdPropRxAdv.rxConf.bAppendStatus = 0x1;
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:  //--------------------------------------------------------------------------------------------
79:  // Callback for Receiving Standard Packet Format with CMD_PROP_RX_ADV (2 Length Bytes)
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 = ((uint16_t)(*(uint8_t*)(&currentDataEntry->data + 1) << 8) |
87:                          (uint16_t)(*(uint8_t*)(&currentDataEntry->data + 0) << 0));
88:          // Changed from
89:          // packetLength = *(uint8_t*)(&currentDataEntry->data);
90:
91:          packetDataPointer = (uint8_t*)(&currentDataEntry->data + LENGTH_FIELD);
92:
93:          memcpy(packet, packetDataPointer, 
94:                 (packetLength + NUM_APPENDED_BYTES - LENGTH_FIELD));
95:
96:          crc16 = ((uint16_t)(packet[packetLength + 0] << 8) +
97:                   (uint16_t)(packet[packetLength + 1] << 0));
98:
99:          rssi = packet[packetLength + 2];
100:
101:         timestamp = ((uint32_t)(packet[packetLength + 3] << 0 ) +
102:                      (uint32_t)(packet[packetLength + 4] << 8 ) +
103:                      (uint32_t)(packet[packetLength + 5] << 16) +
104:                      (uint32_t)(packet[packetLength + 6] << 24));
105:
106:         status = packet[packetLength + 7];
107:
108:         RFQueue_nextEntry();
109:     }
110: }