/* Frames used in the ranging process. See NOTE 2 below. */
static uint8 rx_poll_msg[] = {0x41, 0x88, 0, 0x0, 0xDE, 'W', 'A', 'V', 'E', 0x21, 0, 0};
我看代码下方的注释说这个定义符合mac层标准的数据帧编码
2. The messages here are similar to those used in the DecaRanging ARM application (shipped with EVK1000 kit). They comply with the IEEE
* 802.15.4 standard MAC data frame encoding and they are following the ISO/IEC:24730-62:2013 standard. The messages used are: