uint32_t deviceID[2];
union
{
uint32_t DW;
uint8_t B[4];
} device_ID;
//read device ID
deviceID[0] = NRF_FICR->DEVICEID[0];
deviceID[1] = NRF_FICR->DEVICEID[1];
device_ID.DW=deviceID[0];
SEGGER_RTT_printf(0, " deviceID[0] 0x%#08x\n",deviceID[0]);
SEGGER_RTT_printf(0, " deviceID[1] 0x%#08x\n",deviceID[1]);
SEGGER_RTT_printf(0, " device_ID.B[0] 0x%#02x\n",device_ID.B[0]);
0> deviceID[0] 0x973E21A8
0> deviceID[1] 0x00674E53
0> device_ID.B[0] 0xA8
验证一下
