CC2640 MAC地址理解、使用和更改
第一章CC2640 MAC地址使用、理解和更改
说明：一般BLE在出厂时都有唯一的标识地址，俗称MAC地址，其在广播时，随设备名一起广播出去。请看用Packet Sniffer抓包结果：
ADVA ：0X0AD0AD0AD0AD 就是MAC 地址。
可以修改,对应代码如下：
static void SimpleBLEPeripheral_init(void)
{
// ******************************************************************
// N0 STACK API CALLS CAN OCCUR BEFORE THIS CALL TO ICall_registerApp
// ******************************************************************
// Register the current thread as an ICall dispatcher application
// so that the application can send and receive messages.
ICall_registerApp(&selfEntity, &sem); //ICall 注册当前线程任务
// 以下功能为修改mac地址
// Hard code the BD Address till CC2650 board gets its own IEEE address
uint8 bdAddress[B_ADDR_LEN] = { 0xAD, 0xD0, 0x0A, 0xAD, 0xD0, 0x0A };
HCI_EXT_SetBDADDRCmd(bdAddress);
// Set device's Sleep Clock Accuracy
HCI_EXT_SetSCACmd(40);
// Create an RTOS queue for message from profile to be sent to app.
appMsgQueue = Util_constructQueue(&appMsg); //建立与RTOS队列
其中：bdAddress[B_ADDR_LEN] 为要修改的MAC地址数组，B_ADDR_LEN为MAC地址数组长度，一般为6.
HCI_EXT_SetBDADDRCmd(bdAddress);执行MAC地址修改。执行之后要延时一段时间。使用函数HCI_EXT_SetSCACmd(40);
由函数可知 MAC地址的实现一般都是由HCI层来进行的。
如果将这两行代码屏蔽后会有什么现象呢？
static void SimpleBLEPeripheral_init(void)
{
// ******************************************************************
// N0 STACK API CALLS CAN OCCUR BEFORE THIS CALL TO ICall_registerApp
// ******************************************************************
// Register the current thread as an ICall dispatcher application
// so that the application can send and receive messages.
ICall_registerApp(&selfEntity, &sem); //ICall 注册当前线程任务
// 以下功能为修改mac地址
// Hard code the BD Address till CC2650 board gets its own IEEE address
//uint8 bdAddress[B_ADDR_LEN] = { 0xAD, 0xD0, 0x0A, 0xAD, 0xD0, 0x0A };
//HCI_EXT_SetBDADDRCmd(bdAddress);
// Set device's Sleep Clock Accuracy
//HCI_EXT_SetSCACmd(40);
// Create an RTOS queue for message from profile to be sent to app.
appMsgQueue = Util_constructQueue(&appMsg); //建立与RTOS队列
Packet Sniffer 抓包结果如下：
此时AdvA：0XA0E6F807ACD2。此为本BLE默认的MAC地址。