关于CC3200低功耗问题

运行环境：

               CC3200成功连接路由器后，使用lp3p0_setup_power_policy(POWER_POLICY_STANDBY)函数让CC3200进入低功耗，定时器作为唤醒源，程序是运行在我们自己开发的以CC3200为主控芯片的硬件上，外围模块均已断电。

问题：

       1. 设备连接上路由器后，然后让设备处于低功耗，不关闭路由器

                   我们的硬件电流会在1ma – 几时毫安波动，虽然电流更多的是处在1ma。我们也测试了ti官网提供的例程idle_profile电流也会波动，请问这是什么原因。

       2.  设备连接上路由器后，然后让设备处于低功耗，然后关闭路由器

                   此时设备电流稳定在1ma，如果从新开启路由器，那么设备的电流有会出现波动，这种情况下，经过多次测试电流有时候会停留在10多毫安不变，有时候会1ma到 十多毫安波动，请问这是什么原因？

       备注：我们的目的是，让设备稳定在1ma，然后等定时器唤醒。

gaoyang9992006：

应该是电路问题，如果用官方的例子也这样，肯定是电路设计的问题

Terry Han：

CC3200低功耗的测试参考笔记如下，

//****************************************************************************////! 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);}

Terry Han：

//*****************************************************************************//// Application Name – Idle Profile Non Os// 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. This// example is for non os environment.// Application Details -// http://processors.wiki.ti.com/index.php/CC32xx_Idle_Profile_NonOS_Application// or// docs\examples\CC32xx_Idle_Profile_NonOS_Application.pdf// 对应低功耗模式：// e_pm_S0, // CPU & HW modules are functioning at optimal & intended freq Active模式// e_pm_S1, // CPU is halted, high freq PLL CLK is available to HW modules Sleep模式// e_pm_S2, // CPUSS is clk gated, Mid freq CLK is availalbe to HW modules DPS模式// e_pm_S3, // SoC almost pwr off, slow CLK is present & OCRAM is retained LPDS模式// e_pm_S4 // SOC almost pwr off, slow CLK is present & few regs retained hib模式//bool lp3p0_can_try_pm_state(enum soc_pm target)//{// bool retval = false;//// switch(target) {// case e_pm_S0:// break;// case e_pm_S1:// if(user_sel_power_mode & POWER_POLICY_SLEEP){ //sleep模式，比Run大约少3mA// retval = true;// }// break;// case e_pm_S2:// /*if(user_sel_power_mode & POWER_POLICY_DEEPSLEEP){ //程序中未定义！！！// retval = true;// }*/// break;// case e_pm_S3:// if(user_sel_power_mode & POWER_POLICY_STANDBY){ //LPDS模式// retval = true;// }// break;// case e_pm_S4:// if(user_sel_power_mode & POWER_POLICY_HIBERNATE){// retval = true;// }// break;// default:// break;// }// return retval;//}//————————————-需要弄明白这几个nwp电源管理区别及影响//#define SL_NORMAL_POLICY (0)//#define SL_LOW_LATENCY_POLICY (1)//#define SL_LOW_POWER_POLICY (2)//#define SL_ALWAYS_ON_POLICY (3) //#define SL_LONG_SLEEP_INTERVAL_POLICY (4) This policy works in client mode only//////(1)测试M4-core全速运行+NWP连接AP不发数据整体平均功耗=16mA左右//(2)测试M4-core进入LPDS+NWP连接AP不发数据整体平均功耗=1mA左右,甚至在800uA附近，万用表一直在波动无法准确确定// 实际观察万用表发现在M4进入LPDS后，其实也没有数据发送仅仅是AP连接，功耗多数在1mA之上，甚至几个mA,但是过大约几min后，功耗稍微// 降低了一些大约在600~800uA波动，也会有2~3mA的峰值出现，可能是NWP判断当前没有数据活跃后进入了相对省电的模式。// GPIO-2/4/11/13/17/24 唤醒！//*****************************************************************************

//****************************************************************************////! \addtogroup idle_profile_nonos//! @{////****************************************************************************

// Standard includes#include <stdio.h>#include <string.h>#include <stdbool.h>

//driverlib includes#include "hw_ints.h"#include "hw_types.h"#include "hw_memmap.h"#include "interrupt.h"#include "prcm.h"#include "utils.h"#include "rom.h"#include "rom_map.h"

// Simplelink includes#include "simplelink.h"

//middleware includes#include "cc_types.h"#include "cc_pm.h"#include "cc_pm_ops.h"

// Common interface includes#include "uart_if.h"#include "udma_if.h"//———————————//#include "network_if.h"#include "utils_if.h."//———————————#include "pinmux.h"#include "common.h"

#define APPLICATION_VERSION "1.1.1"

//// Values for below macros shall be modified as per access-point(AP) properties// SimpleLink device will connect to following AP when application is executed//#define GPIO_SRC_WKUP PRCM_LPDS_GPIO13 #define LPDS_DUR_SEC 5#define FOREVER 1#define BUFF_SIZE 1472

#define WK_LPDS 0 /*Wake from LPDS */#define WK_HIB 1 /*Wake from Hibernate */

/* commands */#define APP_SLEEP 0x8 #define APP_SEND 0x10#define APP_RECV 0x20#define APP_ERROR 0x40

/* udp transmission related parameters */#define IP_ADDR 0xFFFFFFFF /* broadcast */#define PORT_NUM 5001#define BUF_SIZE 1400#define UDP_PACKET_COUNT 1000

unsigned char APconnect=1; //测试sl_start 后 连接AP和不连接AP的功耗unsigned char LPDS=1;

enum ap_events{ EVENT_CONNECTION = 0x1, EVENT_DISCONNECTION = 0x2, EVENT_IP_ACQUIRED = 0x4, WDOG_EXPIRED = 0x8, CONNECTION_FAILED = 0x10};

//****************************************************************************// LOCAL FUNCTION PROTOTYPES//****************************************************************************void sl_WlanEvtHdlr(SlWlanEvent_t *pSlWlanEvent);void sl_NetAppEvtHdlr(SlNetAppEvent_t *pNetAppEvent);static void DisplayBanner();static long WlanConnect();void WlanDisconnect();static void BoardInit();void SwitchToStaMode(int iMode);

//*****************************************************************************// GLOBAL VARIABLES — Start//*****************************************************************************#ifndef USE_TIRTOS#if defined(ccs) || defined(gcc)extern void (* const g_pfnVectors[])(void);#endif#if defined(ewarm)extern uVectorEntry __vector_table;#endif#endif

unsigned long g_ulIpAddr = 0;unsigned long g_ulStatus = 0;char g_cErrBuff[100];unsigned long g_ulDestinationIp = IP_ADDR; // Client IP addressunsigned int g_uiPortNum = PORT_NUM;unsigned long g_ulPacketCount = UDP_PACKET_COUNT;char g_cBsdBuf[BUF_SIZE];

//*****************************************************************************// GLOBAL VARIABLES — End//*****************************************************************************

//*****************************************************************************// Local Function Prototypes//*****************************************************************************extern void lp3p0_setup_power_policy(int power_policy);extern int platform_init();extern int set_rtc_as_wk_src(int pwr_mode, unsigned long time_interval, bool is_periodic);extern int set_gpio_as_wk_src(int pwr_mode, unsigned long wk_pin, unsigned long trigger_type);extern void set_host_irq_as_lpds_wk_src();

//*****************************************************************************////! DisplayBanner//!//! \param none//!//! \return none//!//*****************************************************************************static voidDisplayBanner(){ UART_PRINT("\n\n\n\r"); UART_PRINT("\t\t *********************************************\n\r"); UART_PRINT("\t\t CC3200 Idle Profile Non Os Application \n\r"); UART_PRINT("\t\t *********************************************\n\r"); UART_PRINT("\n\n\n\r");

}

//*****************************************************************************////! Application defined idle task hook//! //! \param none//! //! \return none//!//*****************************************************************************void SimpleLinkSyncWaitLoopCallback(){ // // setting host IRQ as a wake up src // set_host_irq_as_lpds_wk_src(true); // // executing idle task // cc_idle_task_pm(); // // removing host IRQ as a wake ip src // set_host_irq_as_lpds_wk_src(false);}

//****************************************************************************////! \brief This function handles WLAN events//!//! \param[in] pSlWlanEvent is the event passed to the handler//!//! \return None////****************************************************************************void sl_WlanEvtHdlr(SlWlanEvent_t *pSlWlanEvent){ switch(pSlWlanEvent->Event) { case SL_WLAN_CONNECT_EVENT: UART_PRINT("C\n\r"); break; case SL_WLAN_DISCONNECT_EVENT: UART_PRINT("D\n\r"); break; default: break; }}

//****************************************************************************////! \brief This function handles events for IP address acquisition via DHCP//! indication//!//! \param[in] pNetAppEvent is the event passed to the handler//!//! \return None////****************************************************************************void sl_NetAppEvtHdlr(SlNetAppEvent_t *pNetAppEvent){ switch(pNetAppEvent->Event) { case SL_NETAPP_IPV4_IPACQUIRED_EVENT: case SL_NETAPP_IPV6_IPACQUIRED_EVENT: g_ulIpAddr = pNetAppEvent->EventData.ipAcquiredV4.ip; g_ulStatus = 1; UART_PRINT("IP: %d.%d.%d.%d \n\r",(g_ulIpAddr&0xFF000000)>>24, (g_ulIpAddr&0x00FF0000)>>16, (g_ulIpAddr&0x0000FF00)>>8, (g_ulIpAddr&0x000000FF)); break; default: break; }}

//*****************************************************************************////! This function gets triggered when HTTP Server receives Application//! defined GET and POST HTTP Tokens.//!//! \param pSlHttpServerEvent Pointer indicating http server event//! \param pSlHttpServerResponse Pointer indicating http server response//!//! \return None//!//*****************************************************************************void sl_HttpServerCallback(SlHttpServerEvent_t *pSlHttpServerEvent, SlHttpServerResponse_t *pSlHttpServerResponse){}

//*****************************************************************************////! This function handles socket events indication//!//! \param[in] pSock – Pointer to Socket Event Info//!//! \return None//!//*****************************************************************************void SimpleLinkSockEventHandler(SlSockEvent_t *pSock){ // // This application doesn't work w/ socket – Events are not expected //

}

//****************************************************************************////! \brief Connecting to a WLAN Accesspoint//!//! This function connects to the required AP (SSID_NAME) with Security//! parameters specified in te form of macros at the top of this file//!//! \param[in] None//!//! \return status value//!//! \warning If the WLAN connection fails or we don't aquire an IP//! address, It will be stuck in this function forever.////****************************************************************************static long WlanConnect(){ SlSecParams_t secParams = {0}; long lRetVal = 0;

secParams.Key = (signed char*)SECURITY_KEY; secParams.KeyLen = strlen(SECURITY_KEY); secParams.Type = SECURITY_TYPE; lRetVal = sl_WlanConnect((signed char*)SSID_NAME, strlen(SSID_NAME), 0, &secParams, 0); ASSERT_ON_ERROR(lRetVal);

while(g_ulStatus != 1) { // Wait for WLAN Event _SlNonOsMainLoopTask(); }

return SUCCESS;}

//*****************************************************************************////! Board Initialization & Configuration//!//! \param None//!//! \return None////*****************************************************************************static voidBoardInit(void){/* In case of TI-RTOS vector table is initialize by OS itself */#ifndef USE_TIRTOS // // Set vector table base //#if defined(ccs) || defined(gcc) IntVTableBaseSet((unsigned long)&g_pfnVectors[0]);#endif#if defined(ewarm) IntVTableBaseSet((unsigned long)&__vector_table);#endif#endif // // Enable Processor // MAP_IntMasterEnable(); MAP_IntEnable(FAULT_SYSTICK);

PRCMCC3200MCUInit();}

//*****************************************************************************////! Check the device mode and switch to STATION(STA) mode//! restart the NWP to activate STATION mode//!//! \param iMode (device mode)//!//! \return None////*****************************************************************************void SwitchToStaMode(int iMode){ if(iMode != ROLE_STA) { sl_WlanSetMode(ROLE_STA); MAP_UtilsDelay(80000); sl_Stop(10); MAP_UtilsDelay(80000); sl_Start(NULL,NULL,NULL); }

}

//*****************************************************************************////! Parse the input string command//! //! \param buff is the input buffer cmd to be parsed //! \param cmd is the pointer to the cmd code for the input command//!//!\return None////*****************************************************************************void ParseCmd(char* buff, signed char*cmd){ if(strcmp(buff, "sleep") == 0){ *cmd = APP_SLEEP; }else if(strcmp(buff, "send") == 0){ *cmd = APP_SEND; }else if(strcmp(buff, "recv") == 0){ *cmd = APP_RECV; }else{ *cmd = APP_ERROR; }}