CC3200低功耗问题

可以直接使用LPDS模式，其实进入到低功耗后的这些寄存器可以不用关系，在LPDS模式下RAM数据保持，如果通过中断后需要记录数据可以写入到片外的SPI Flash中

关于低功耗的操作可以参考如下笔记

//****************************************************************************

//

//! Enter the HIBernate mode configuring the wakeup timer

//!

//! \param none

//! 

//! This function 

//! 1. Sets up the wakeup RTC timer

//! 2. Enables the RTC

//! 3. Enters into HIBernate 

//!

//! \return None.

//

//****************************************************************************

void EnterHIBernate()

{ 

#define SLOW_CLK_FREQ (32*1024)

//

// Configure the HIB module RTC wake time

//

MAP_PRCMHibernateIntervalSet(5 * SLOW_CLK_FREQ);

//

// Enable the HIB RTC

//

// MAP_PRCMHibernateWakeupSourceEnable(PRCM_HIB_SLOW_CLK_CTR);

//------------------------------------------------------------Hib模式下增加GPIO唤醒--------------------------------------------------------------- 

// PRCMHibernateWakeupSourceEnable入口参数 

// PRCM_HIB_SLOW_CLK_CTR -PRCM_HIB_GPIO2 -PRCM_HIB_GPIO4 -PRCM_HIB_GPIO13 -PRCM_HIB_GPIO17 -PRCM_HIB_GPIO11 -PRCM_HIB_GPIO24 -PRCM_HIB_GPIO26 

PRCMHibernateWakeupSourceEnable(PRCM_HIB_GPIO13);

PRCMHibernateWakeUpGPIOSelect(PRCM_HIB_GPIO13,PRCM_HIB_FALL_EDGE); //按键按下去产生上升沿，松开后产生下降沿！注意入口参数的顺序！！！

//------------------------------------------------------------------------------------------------------------------------------------------------

// DBG_PRINT("HIB: Entering HIBernate...\n\r");

UART_PRINT("Entering HIB\n\r"); 

MAP_UtilsDelay(80000);

 

//

// powering down SPI Flash to save power 

//

Utils_SpiFlashDeepPowerDown();

//

// Enter HIBernate mode

//

MAP_PRCMHibernateEnter();

}

//****************************************************************************

// MAIN FUNCTION

//****************************************************************************

int main(void)

{

long lRetVal;

char cCmdBuff[20];

signed char cCmd = APP_SLEEP; //并非初始化为进入睡眠模式

SlSockAddrIn_t sAddr;

SlSockAddrIn_t sLocalAddr;

SlSockAddrIn_t sBrdAddr;

int iCounter;

int iAddrSize;

int iSockID;

int iStatus;

long lLoopCount = 0;

short sTestBufLen;

struct SlTimeval_t timeVal;

//

// Board Initialization

//

BoardInit();

 

//

// uDMA Initialization

//

UDMAInit();

 

//

// Configure the pinmux settings for the peripherals exercised

// Note: pinmux has been modified after the output from pin mux tools

// to enable sleep clk for the peripherals exercised

//

PinMuxConfig();

//

// Initialize the platform

//

platform_init(); //低功耗IO漏电流等处理

//

// Initialise the UART terminal

//

InitTerm();

//

// Display banner

//

DisplayBanner();

 

//

// starting the simplelink

//

// lRetVal = sl_Start(0, 0, 0);

lRetVal = sl_Start(NULL, NULL, NULL); //运行到这就无法调试了 Warning: **ERROR**: Unable to start execution 0x00000001 

if (lRetVal < 0)

{

UART_PRINT("Failed to start the device \n\r");

LOOP_FOREVER();

}

//-------------------------------------------------测试-------------------------------------- 

if (APconnect==1)

{

//

// Swtich to STA mode if device is not

//

SwitchToStaMode(lRetVal);

 

//

// set connection policy

//

sl_WlanPolicySet(SL_POLICY_CONNECTION,SL_CONNECTION_POLICY(0, 0, 0, 0, 0), NULL, 0);

//

// Set the power management policy of NWP

// 并非通过下面方法设置NWP的低功耗模式！这只是nwp工作的模式！

lRetVal = sl_WlanPolicySet(SL_POLICY_PM, SL_NORMAL_POLICY, NULL, 0); //注意，设置NWP的电源模式，在nwp programming中4.6.1 Power Policy详细介绍

//Normal (Default) – Features the best tradeoff between traffic delivery time and power performance.

UART_PRINT("Trying to Connect to AP: %s ...\r\n",SSID_NAME);

//---------------------------------------------------连接AP-----------------------------------------------------

//备注：记不清在哪个文档中说明是能DHCP会增加电流消耗？

//Connecting to WLAN AP

//

lRetVal = WlanConnect();

if(lRetVal < 0)

{

UART_PRINT("Failed to establish connection w/ an AP \n\r");

LOOP_FOREVER();

}

//---------------------------------------------------------------------------------------------------------------

// filling the buffer

for (iCounter=0 ; iCounter<BUF_SIZE ; iCounter++)

{

g_cBsdBuf[iCounter] = (char)(iCounter % 10);

}

//---------------------------------------------------建立UDP的服务器----------------------------------------------------- 

sTestBufLen = BUF_SIZE;

//filling the UDP server socket address

sLocalAddr.sin_family = SL_AF_INET;

sLocalAddr.sin_port = sl_Htons((unsigned short)PORT_NUM); //本地UDP的端口号

sLocalAddr.sin_addr.s_addr = 0;

//filling the UDP server socket address

sBrdAddr.sin_family = SL_AF_INET;

sBrdAddr.sin_port = sl_Htons((unsigned short)PORT_NUM); //目的UDP的端口号

sBrdAddr.sin_addr.s_addr = sl_Htonl((unsigned int)g_ulDestinationIp);

iAddrSize = sizeof(SlSockAddrIn_t);

// creating a UDP socket

iSockID = sl_Socket(SL_AF_INET,SL_SOCK_DGRAM, 0);

//------------------------------------------设置阻塞模式----------------------------------------

/* setting time out for socket recv */

timeVal.tv_sec = 5; // Seconds

timeVal.tv_usec = 0; // Microseconds. 10000 microseconds resolution

sl_SetSockOpt(iSockID,SL_SOL_SOCKET,SL_SO_RCVTIMEO, (_u8 *)&timeVal, sizeof(timeVal)); //网络接收超时检查打开

//----------------------------------------------------------------------------------------------

// binding the UDP socket to the UDP server address

iStatus = sl_Bind(iSockID, (SlSockAddr_t *)&sLocalAddr, iAddrSize);

if( iStatus < 0 )

{

// error

sl_Close(iSockID);

ASSERT_ON_ERROR(iStatus);

}

//------------------------------------------------------------------------------------------------------------------------- 

}

//--------------------------------------------------------------------------

//

// setting Apps power policy

//

// lp3p0_setup_power_policy(POWER_POLICY_STANDBY); //M4-core 进入LPDS 模式 一定把该模式下的唤醒源打开！

// lp3p0_setup_power_policy(POWER_POLICY_HIBERNATE); //M4-core 进入Hib 模式 不再使用！！！！！

 

UART_PRINT("enter one of the following command:\n\r");

UART_PRINT("sleep - for putting the system into LPDS mode\n\r");

UART_PRINT(" GPIO 13 and timer(5 sec) are the wk source configured\n\r");

UART_PRINT("recv - for receiving 1000 UDP packets\n\r");

UART_PRINT("send - for broadcasting 1000 UDP packets\n\r");

 

do{

 

UART_PRINT("cmd#");

//

// get cmd over UART

//

// GetCmd(cCmdBuff, 20); //阻塞CPU运行

//

// parse the command

//

// ParseCmd(cCmdBuff, &cCmd);

// if(cCmd == APP_SLEEP)

if(LPDS==1)

{

 

//

// set timer and gpio as wake src

//

// set_rtc_as_wk_src(WK_LPDS, LPDS_DUR_SEC, false); //测试LPDS功耗，不使用定时器唤醒，仅使用GPIO唤醒！

// set_gpio_as_wk_src(WK_LPDS, GPIO_SRC_WKUP, PRCM_LPDS_FALL_EDGE);

//------------------------------------------------------------------注意！！--------------------------------------------------------------------------------------------- 

// set_gpio_as_wk_src(WK_HIB, GPIO_SRC_WKUP, PRCM_LPDS_FALL_EDGE); //必须设置进入Hib模式下的中断唤醒源，

//注意在sl_Stop(10)之前不要启动该语句，否则NWP在sl_Stop(10)之后就自动进入了Hib模式但是唤醒源并没设置OK，直接屏蔽该语句，用EnterHIBernate();即可

//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------

//M4-LPDS+NWP-hib(带UART跳线帽RX/TX=3.3V)=10.6uA 拔掉跳线帽(CC3200-RX/TX=0.1V)=14.5uA

UART_PRINT("M4-LPDS+NWP-hib"); //将CC3200-RX引脚接到GND/VCC=3.3V电流下降到10.65uA;CC3200-TX引脚接到GND/VCC=3.3V电流不发生变化.

/* close socket & stop device */ //Tip:CC3200启动过程中电流在几十mA,但是进入LPDS/Hib模式后电流在uA级别，此时电流档位精度不够，

//此时快速将电流mA档位切换到uA档位，虽然此时J12已经断开，但是注意到J12后面有两个100uF电容在给

//CC3200供电，因此切换完成后电流再补充到电容两端及CC3200电流消耗！

//D5/D6 ON problem.J2 and J3 are shorted by default, so the GPIO 10 and GPIO 11 are pulled up to VCC.

//但是拔掉J2/J3后 LED不亮了但是功耗也没有降低，依然是10.64uA~10.65uA

//注意LPDS中sl_Stop(10)是可以向下运行的，但是改为Hib模式时，根本就没有向下运行！ 

// sl_Close(iSockID); // 关不关闭socket对功耗没有影响，NWP已经停止工作了，socket自然也就关闭了

// sl_Stop(10); 

UART_PRINT("Test\n\r"); // 改为sl_Stop(10)/sl_Stop(1)均可进入此低功耗模式;M4-LPDS+NWP-hib后正常229uA电流

// M4-hib+NWP-hib模式下sl_Stop(10)/sl_Stop(1)/sl_Stop(0)均可进入低功耗模式电流消耗为10uA~14uA左右

// MAP_UtilsDelay(80000); // 延时0.5s让串口的数据打印出来后，M4核再进入低功耗模式.

//

// powering down SPI Flash to save power 

//

// Utils_SpiFlashDeepPowerDown(); //在M4-hib+NWP-hib模式下功耗没有降低！但在M4-LPDS+NWP-hib模式下打开SPI Flash低功耗后测得220uA 关闭该语句为229uA

// cc_idle_task_pm(); //LPDS模式用这个可以但是Hib模式不要用，将C:\ti\CC3200SDK_1.1.0\cc3200-sdk\middleware\framework\pm中cc_pm.c添加到工程中查看函数原型！

//-------------------------------------------------------------------------------------

// Stop the NWP driver

// lRetVal = Network_IF_DeInitDriver(); ！

// if(lRetVal < 0)

// {

// UART_PRINT("Failed to stop SimpleLink Device\n\r");

// LOOP_FOREVER();

// }

//During Hib mode the entire SOC loses its state, including the MCU subsystem, the NWP subsystem 

EnterHIBernate(); //Hib模式用这个进入低功耗,测试屏蔽掉sl_stop(10)即打开NWP连接AP情况下让M4进入Hib模式，测得功耗为10.65uA,与执行sl_stop(10)功耗一致！

//注意Hib模式下测试的电流消耗包括CC3200+SPI_Flash的功耗，而Datasheet上4uA是不包括SPI_Flash的功耗哦

//------------------------------------------------------------------------------------- 

UART_PRINT("M4-Active+NWP-hib\n\r"); //测试程序从LPDS唤醒后从哪开始运行---此处！ 

}

else if(cCmd == APP_RECV)

{

lLoopCount = 0;

/// waits for 1000 packets from a UDP client

while (lLoopCount < g_ulPacketCount)

{

iStatus = sl_RecvFrom(iSockID, g_cBsdBuf, sTestBufLen, 0,( SlSockAddr_t *)&sAddr, (SlSocklen_t*)&iAddrSize );

if( iStatus < 0 )

{

//error

break;

}

lLoopCount++;

}

UART_PRINT("Recieved %u packets successfully \n\r",lLoopCount);

if(lLoopCount != g_ulPacketCount)

{

if(iStatus == SL_EAGAIN)

{

UART_PRINT("timed out\n\r");

}

else

{

UART_PRINT("recv error: %d\n\r", iStatus);

}

}

}

else if(cCmd == APP_SEND)

{

lLoopCount = 0;

// sending 1000 packets to the UDP server

while (lLoopCount < g_ulPacketCount)

{

// sending packet

iStatus = sl_SendTo(iSockID, g_cBsdBuf, sTestBufLen, 0,(SlSockAddr_t *)&sBrdAddr, iAddrSize);

if( iStatus <= 0 )

{

// error

UART_PRINT("send error\n\r");

break;

}

lLoopCount++;

}

UART_PRINT("Sent %u packets successfully\n\r",lLoopCount);

}

}while(FOREVER);

}