1:   //--------------------------------------------------------------------------------------------
2:   // Receive Standard Packet Format (2 Length Bytes) with PHYs using CMD_PROP_RX_ADV by Default
3:   //--------------------------------------------------------------------------------------------
4:
5:   // Defines
6:   #define DATA_ENTRY_HEADER_SIZE  8    // Constant header size of a Generic Data Entry
7:   #define NUM_DATA_ENTRIES        2    // NOTE: Only two data entries supported
8:   #define CRC                     2    // 2 if .rxConf.bIncludeCrc = 0x1, 0 otherwise
9:   #define RSSI                    1    // 1 if .rxConf.bAppendRssi = 0x1, 0 otherwise
10:  #define TIMESTAMP               4    // 4 if .rxConf.bAppendTimestamp = 0x1, 0 otherwise
11:  #define STATUS                  1    // 1 if .rxConf.bAppendStatus = 0x1, 0 otherwise
12:  #define LENGTH_FIELD            2    // Changed from 1
13:  #define MAX_LENGTH              4093 // Changed from 255
14:  #define NUM_APPENDED_BYTES      LENGTH_FIELD + CRC + RSSI + TIMESTAMP + STATUS
15:
16:  uint8_t packet[MAX_LENGTH + NUM_APPENDED_BYTES - LENGTH_FIELD]; // Length stored in 
17:                                                                  // packetLength
18:  uint16_t packetLength; // Changed from uint8_t
19:
20:  static void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e);
21:
22:  static RF_Object rfObject;
23:  static RF_Handle rfHandle;
24:
25:  static uint8_t rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES, MAX_LENGTH,
26:                                NUM_APPENDED_BYTES)]__attribute__((aligned(4)));
27:  static dataQueue_t dataQueue;
28:  static rfc_dataEntryGeneral_t* currentDataEntry;
29:  static uint8_t* packetDataPointer;
30:  rfc_propRxOutput_t rxStatistics;
31:  uint16_t crc16;
32:  int8_t rssi;
33:  uint32_t timestamp;
34:  uint8_t status;
35:
36:  void *mainThread(void *arg0)
37:  {
38:      RF_Params rfParams;
39:      RF_Params_init(&rfParams);
40:
41:      if(RFQueue_defineQueue(&dataQueue, rxDataEntryBuffer, sizeof(rxDataEntryBuffer), 
42:	                         NUM_DATA_ENTRIES, MAX_LENGTH + NUM_APPENDED_BYTES))
43:      {
44:          while(1);
45:      }
46:
47:      RF_cmdPropRxAdv.pktConf.bRepeatOk = 0x1; // Application specific settings
48:      RF_cmdPropRxAdv.pktConf.bRepeatNok = 0x1;
49:      RF_cmdPropRxAdv.pktConf.bCrcIncHdr = 0x1;
50:      RF_cmdPropRxAdv.rxConf.bAutoFlushCrcErr = 0x1;
51:      RF_cmdPropRxAdv.syncWord0 = 0x930B51DE;
52:      RF_cmdPropRxAdv.maxPktLen = MAX_LENGTH;
53:      RF_cmdPropRxAdv.hdrConf.numHdrBits = 0x10; // Changed from 0x8
54:      RF_cmdPropRxAdv.hdrConf.numLenBits = 0x10; // Changed from 0x8
55:      RF_cmdPropRxAdv.lenOffset = 0x0;
56:      RF_cmdPropRxAdv.pQueue = &dataQueue;
57:
58:      RF_cmdPropRxAdv.pOutput = (uint8_t*)&rxStatistics; // Optional (for debugging)
59:
60:      // Necessary changes to the Setup command to support the standard packet format
61:      RF_cmdPropRadioDivSetup.formatConf.nSwBits = 0x20; // 32 bits sync word
62:      RF_cmdPropRadioDivSetup.formatConf.whitenMode = 0x0; // No whitening
63:
64:      rfHandle = RF_open(&rfObject, &RF_prop, (RF_RadioSetup*)&RF_cmdPropRadioDivSetup, 
65:                         &rfParams);
66:      RF_postCmd(rfHandle, (RF_Op*)&RF_cmdFs, RF_PriorityNormal, NULL, 0);
67:      RF_runCmd(rfHandle, (RF_Op*)&RF_cmdPropRxAdv, RF_PriorityNormal, 
68:                &callback, RF_EventRxEntryDone);
69:      while(1);
70:  }
71:

72:  //--------------------------------------------------------------------------------------------
73:  // Callback for Receiving Standard Packet Format (2 Length Bytes) with PHYs 
74:  // using CMD_PROP_RX_ADV by Default
75:  //--------------------------------------------------------------------------------------------
76:
77:  void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
78:  {
79:      if(e & RF_EventRxEntryDone)
80:      {
81:          currentDataEntry = RFQueue_getDataEntry();
82:
83:          packetLength = ((uint16_t)(*(uint8_t*)(&currentDataEntry->data + 1) << 8) |
84:                          (uint16_t)(*(uint8_t*)(&currentDataEntry->data + 0) << 0));
85:          // Changed from
86:          // packetLength = *(uint8_t*)(&currentDataEntry->data);
87:
88:          packetDataPointer = (uint8_t*)(&currentDataEntry->data + LENGTH_FIELD);
89:
90:          memcpy(packet, packetDataPointer, 
91:                 (packetLength + NUM_APPENDED_BYTES - LENGTH_FIELD));
92:
93:          crc16 = ((uint16_t)(packet[packetLength + 0] << 8) +
94:                   (uint16_t)(packet[packetLength + 1] << 0));
95:
96:          rssi = packet[packetLength + 2];
97:
98:          timestamp = ((uint32_t)(packet[packetLength + 3] << 0 ) +
99:                       (uint32_t)(packet[packetLength + 4] << 8 ) +
100:                      (uint32_t)(packet[packetLength + 5] << 16) +
101:                      (uint32_t)(packet[packetLength + 6] << 24));
102:
103:         status = packet[packetLength + 7];
104:
105:         RFQueue_nextEntry();
106:     }
107: }