编写 rfPacketTx 示例是为了支持此格式，除了有效载荷长度和内容外，无需更改代码示例。但以下代码片段做了部分优化修改，以提升可读性。以下代码展示了如何修改 rfPacketTx.c 以实现每 0.5s 发送一次所需的有效载荷。

1:  //---------------------------------------------------------------------------------------------
2:  // Transmit Standard Packet Format with CMD_PROP_TX (1 Length Byte)
3:  //---------------------------------------------------------------------------------------------
4:
5:  // Defines
6:  #define PAYLOAD_LENGTH  3 // Max 255 bytes
7:
8:  uint8_t packet[PAYLOAD_LENGTH];
9:
10: static RF_Object rfObject;
11: static RF_Handle rfHandle;
12:
13: void *mainThread(void *arg0)
14: {
15:     RF_Params rfParams;
16:     RF_Params_init(&rfParams);
17:
18:     RF_cmdPropTx.pktLen = PAYLOAD_LENGTH; // Application specific settings
19:     RF_cmdPropTx.pPkt   = packet;
20:
21:     rfHandle = RF_open(&rfObject, &RF_prop,
22:                       (RF_RadioSetup*)&RF_cmdPropRadioDivSetup, &rfParams);
23:     RF_postCmd(rfHandle, (RF_Op*)&RF_cmdFs, RF_PriorityNormal, NULL, 0);
24:
25:     while(1)
26:     {
27:         //-------------------------------------------------------------------------------------
28:         // Could be placed outside the while(1) since the packet does not change
29:         for (uint8_t i = 0; i < PAYLOAD_LENGTH; i++)
30:         {
31:             packet[i] = i + 1;
32:         }
33:         //-------------------------------------------------------------------------------------
34:         RF_runCmd(rfHandle, (RF_Op*)&RF_cmdPropTx, RF_PriorityNormal, NULL, 0);
35:         RF_yield(rfHandle);
36:         usleep(500000);
37:     }
38: }

使用标准 TX 命令时，最大有效载荷长度为 255，并且长度字节 (PAYLOAD_LENGTH) 必须写入命令的.pktLen 字段。