cc2640standby模式怎么正确进入

Jsees Qian

Prodigy 50 points

我关了广播和定时器还是有几个uA的跳变电流

6 年多前

0 Susan Yang 6 年多前

TI__Guru**** 252096 points

您可以参考TI的例程，如SimpleBLEPeripheral。若是没有任何任务需要处理发生，TI-RTOS会把设备置于待机状态。当设备需要广播时，它会自动唤醒

您可以参考appBLE.cfg。当CPU处于IDLE状态时，会使用standbyPolicy。

/* Idle CPU when threads blocked waiting for an interrupt */
Power.idle = true;
Power.policyFunc = Power.standbyPolicy;

0 Alvin Chen 6 年多前

TI__Guru 56646 points

Hi

这是一个简单的demo，在实际使用在建议您用信号量来操作。

如果是使用semphare_pend将当前任务挂起使系统进入standby的，则当其他地方（比如中断处理中）post了这个信号量，系统会退出standby，当前task继续执行semphare_pend之后的语句。在standby是无法执行任何程序的。

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/*
 *  ======== pinStandby.c ========
 */
#include <unistd.h>

/* Driver Header files */
#include <ti/drivers/PIN.h>
#include <ti/drivers/pin/PINCC26XX.h>

/* Example/Board Header files */
#include "Board.h"

/* Led pin table */
PIN_Config LedPinTable[] =
{
    Board_PIN_LED0    | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX, /* LED initially off */
    Board_PIN_LED1    | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX, /* LED initially off */
    PIN_TERMINATE                                                                      /* Terminate list */
};

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    PIN_State   pinState;
    PIN_Handle  hPin;
    uint_t      currentOutputVal;
    uint32_t    standbyDuration = 5;

    /* Shut down external flash on LaunchPads. It is powered on by default
     * but can be shut down through SPI
     */
    #ifdef Board_shutDownExtFlash
        Board_shutDownExtFlash();
    #endif

    /* Allocate LED pins */
    hPin = PIN_open(&pinState, LedPinTable);

    /*
     * Repeatedly sleeps for a duration, to allow repeated entry/exit
     * from standby. The LED states are toggled on each iteration
     */
    while(1) {
        /* Sleep, to let the power policy transition the device to standby */
        sleep(standbyDuration);

        /* Read current output value for all pins */
        currentOutputVal =  PIN_getPortOutputValue(hPin);

        /* Toggle the LEDs, configuring all LEDs at once */
        PIN_setPortOutputValue(hPin, ~currentOutputVal);
    }
}