TI中文支持网例程中的是通过调用sl_Recv()函数去查询是否有数据到来，
请问当有网络数据来的时候 能不能以中断的形式通知。
gaoyang9992006：
好像是不可以的，不过有的资料写的是可以通过网络唤醒的。
http://www.deyisupport.com/question_answer/wireless_connectivity/wifi/f/105/t/74877.aspx
但是没试过怎么实现数据触发中断来接收。不知道你是不是没数据的时候就休眠
Terry Han：
参考如下测试代码
//*****************************************************************************
//
// Application Name – Idle Profile// Application Overview – Idle profile enables the user to measure current
// values, power consumption and other such parameters
// for CC3200, when the device is essentially idle(both
// NWP and APPS subsystems in low power deep sleep// condition). The other main objective behind this
// application is to introduce the user to the easily
// configurable power management framework.
// Application Details –
// http://processors.wiki.ti.com/index.php/CC32xx_Idle_Profile_Application
// or// docs\examples\CC32xx_Idle_Profile_Application.pdf
//*****************************************************************************
////! \brief Task Created by main fucntion.This task starts simpleink, set NWP
//! power policy, connects to an AP. Give Signal to the other task about
//! the connection.wait for the message form the interrupt handlers and
//! the other task. Accordingly print the wake up cause from the low
//! power modes.
//!//! \param pvParameters is a general void pointer (not used here).
//!
//! \return none
//
//*****************************************************************************
void TimerGPIOTask(void *pvParameters)
{
cc_hndl tTimerHndl = NULL;
cc_hndl tGPIOHndl = NULL;unsigned char ucQueueMsg = 0;
unsigned char ucSyncMsg = 0;
int iRetVal = 0;
//
// Displays the Application Banner
//
DisplayBanner();
//
// creating the queue for signalling about connection events
//
iRetVal = osi_MsgQCreate(&g_tConnection, NULL, sizeof( unsigned char ), 3);
if (iRetVal < 0)
{
UART_PRINT("unable to create the msg queue\n\r");
LOOP_FOREVER();
}
//
// starting the simplelink
//
iRetVal = sl_Start(NULL, NULL, NULL);
if (iRetVal < 0)
{
UART_PRINT("Failed to start the device \n\r");
LOOP_FOREVER();
}
//
// Swtich to STA mode if device is not
//
SwitchToStaMode(iRetVal);
//
// Set the power management policy of NWP
//
iRetVal = sl_WlanPolicySet(SL_POLICY_PM, SL_NORMAL_POLICY, NULL, 0);
if (iRetVal < 0)
{
UART_PRINT("unable to configure network power policy\n\r");
LOOP_FOREVER();
}
//
// connecting to the Access Point
//
if(-1 == WlanConnect())
{
sl_Stop(SL_STOP_TIMEOUT);
UART_PRINT("Connection to AP failed\n\r");
}
else
{
UART_PRINT("Connected to AP\n\r");
//
//signal the other task about the sl start and connection to the AP
//
iRetVal = osi_MsgQWrite(&g_tConnectionFlag, &ucSyncMsg,OSI_WAIT_FOREVER);
if (iRetVal < 0)
{
UART_PRINT("unable to create the msg queue\n\r");
LOOP_FOREVER();
}
}
//
// Queue management related configurations
//
iRetVal = osi_MsgQCreate(&g_tWkupSignalQueue, NULL,
sizeof( unsigned char ), 10);
if (iRetVal < 0)
{
UART_PRINT("unable to create the msg queue\n\r");
LOOP_FOREVER();
}
//
// setting Timer as one of the wakeup source
//
tTimerHndl = SetTimerAsWkUp();
//
// setting some GPIO as one of the wakeup source
//
tGPIOHndl = SetGPIOAsWkUp();
/* handles, if required, can be used to stop the timer, but not used here*/
UNUSED(tTimerHndl);
UNUSED(tGPIOHndl);
//
// setting Apps power policy
//
lp3p0_setup_power_policy(POWER_POLICY_STANDBY); //设置M4内核低功耗模式=LPDS模式
//通过空闲回调函数vApplicationIdleHook()将该LPDS参数传递到CPU进入的低功耗模式
while(FOREVER) //当CPU进入LPDS后通过按键 /Timer /NWP-IRQ唤醒的
{
//
// waits for the message from the various interrupt handlers(GPIO,Timer) and the UDPServerTask.
//
osi_MsgQRead(&g_tWkupSignalQueue, &ucQueueMsg, OSI_WAIT_FOREVER);
switch(ucQueueMsg){
case 1:
UART_PRINT("timer\n\r"); //通过定时器定时到后唤醒CPU，进入TimerCallback()回调函数写入队列信息进入该任务读取队列信息，打印该信息
break;
case 2:
UART_PRINT("GPIO\n\r"); //IO产生<中断>后进入gpio_intr_hndlr()入口函数写入队列信息进入该任务读取队列信息，打印该信息
break; //注意在idle_profile_nonos例程中配置的GPIO唤醒源，直接从CPU睡眠的地方进行唤醒的，并未进入中断函数执行！
case 3:
UART_PRINT("host irq\n\r"); //通过NWP收到数据后唤醒CPU-执行UDPServerTask写入信号量 Task creation for providing host_irq as a wake up source(LPDS)
break;
default:
UART_PRINT("invalid msg\n\r");
break;
}
}
}
//*****************************************************************************
//
//! \brief Task Created by main fucntion. This task creates a udp server and
//! wait for packets. Upon receiving the packet, signals the other task.
//!
//! \param pvParameters is a general void pointer (not used here).
//!
//! \return none
//
//*****************************************************************************
void UDPServerTask(void *pvParameters)
{
unsigned char ucSyncMsg;
unsigned char ucQueueMsg = 3; //信号量为3
int iSockDesc = 0;
int iRetVal = 0;
sockaddr_in sLocalAddr;
sockaddr_in sClientAddr;
unsigned int iAddrSize = 0;
//
// waiting for the other task to start simplelink and connection to the AP
// Blocked on a message from the Other Task(waiting for simplelink start and connection to AP)
osi_MsgQRead(&g_tConnectionFlag, &ucSyncMsg, OSI_WAIT_FOREVER);
osi_MsgQDelete(&g_tConnectionFlag);
//—————————————-建立UDP服务器——————————————
//
// configure the Server
//
sLocalAddr.sin_family = SL_AF_INET;
sLocalAddr.sin_port = sl_Htons((unsigned short)APP_UDP_PORT); //本机端口号
sLocalAddr.sin_addr.s_addr = 0; //忽略本地IP地址！
iAddrSize = sizeof(sockaddr_in);
//
// creating a UDP socket
//
iSockDesc = sl_Socket(SL_AF_INET,SL_SOCK_DGRAM, 0);
if(iSockDesc < 0)
{
UART_PRINT("sock error\n\r");
LOOP_FOREVER();
}
//
// binding the socket
//
iRetVal = sl_Bind(iSockDesc, (SlSockAddr_t *)&sLocalAddr, iAddrSize);
if(iRetVal < 0)
{
UART_PRINT("bind error\n\r");
LOOP_FOREVER();
}
//————————————————————————————————–
while(FOREVER)
{
// NWP收到UDP的数据会自动唤醒M4内核
// waiting on a UDP packet
// As soon as the NWP subsystem receives any UDP packet, it will bring the APPS subsystem out of LPDS, if not already.
iRetVal = sl_RecvFrom(iSockDesc, g_cBuffer, BUFF_SIZE, 0,( SlSockAddr_t *)&sClientAddr,(SlSocklen_t*)&iAddrSize );
if(iRetVal > 0)
{
// 收到数据后读取sl_RecvFrom() // signal the other task about receiving the UDP packet
//
osi_MsgQWrite(&g_tWkupSignalQueue, &ucQueueMsg, OSI_WAIT_FOREVER); //写入队列信号量=3
}
else
{
UART_PRINT("recv error\n\r");
LOOP_FOREVER();
}
}
}
//****************************************************************************
// MAIN FUNCTION
// 采用USE_FREERTOS
//****************************************************************************
void main(void)
{
int iRetVal;
//
// Board Initialization
//
BoardInit();
//
// Configure the pinmux settings for the peripherals exercised
//
PinMuxConfig();
//
// Initialize the platform
//
platform_init();
//
// Configuring UART
//
g_tUartHndl = uart_open(PRCM_UARTA0);
#ifdef DEBUG_GPIO //打开了，在M4未进入LPDS时，GPIO 9一直点亮RED
//
// setting up GPIO for indicating the entry into LPDS
//
tGPIODbgHndl = cc_gpio_open(GPIO_09, GPIO_DIR_OUTPUT); //这个LED灯在lp3p0_back_up_soc_data/lp3p0_restore_soc_data中调用控制
cc_gpio_write(tGPIODbgHndl, GPIO_09, 1);
#endif
//
// Start the SimpleLink Host
//
iRetVal = VStartSimpleLinkSpawnTask(SPAWN_TASK_PRIORITY);
if(iRetVal < 0)
{
UART_PRINT("could not create simplelink task\n\r");
LOOP_FOREVER();
}
//
// sync object for inter thread communication
//
iRetVal = osi_MsgQCreate(&g_tConnectionFlag, NULL, sizeof( unsigned char ), 1);
if(iRetVal < 0)
{
UART_PRINT("could not create msg queue\n\r");
LOOP_FOREVER();
}
// 注意M4唤醒后执行恢复寄存器函数resume_from_S3()
// Task creation for providing host_irq as a wake up source(LPDS) // 在USR手机网络助手中(1)建立一个UDP client (2)增加CC3200的本机IP (3)向目的IP及端口号发送数据
iRetVal = osi_TaskCreate(UDPServerTask,(const signed char *)"UDP Server waiting to recv packets", OSI_STACK_SIZE, NULL, 1, NULL ); //任务优先级=1
if(iRetVal < 0)
{
UART_PRINT("First Task creation failed\n\r");
LOOP_FOREVER();
}
//
// setting up timer and gpio as source for wake up from LPDS
//
iRetVal = osi_TaskCreate(TimerGPIOTask,(const signed char*)"Configuring Timer and GPIO as wake src", OSI_STACK_SIZE, NULL, 1, NULL );//任务优先级=1
if(iRetVal < 0)
{
UART_PRINT("Second Task creation failed\n\r");
LOOP_FOREVER();
}
//
// Start the task scheduler
//
osi_start();
}
