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LAUNCHXL-CC26X2R1: how to wakeup from standby

Part Number: LAUNCHXL-CC26X2R1

Hi Ti members

I use example "empty" of sdk(simplelink_cc13xx_cc26xx_sdk_5_30_01_01).

I want to use BTN1 to wakeup from standby.

And I use following code, but is did not work.

How do I wakeup from standby by BTN1?

/*
 * Copyright (c) 2015-2019, Texas Instruments Incorporated
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
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 *    notice, this list of conditions and the following disclaimer.
 *
 * *  Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
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 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 */

/*
 *  ======== empty.c ========
 */

/* For usleep() */
#include <unistd.h>
#include <stdint.h>
#include <stddef.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/PIN.h>
#include <ti/drivers/pin/PINCC26XX.h>
// #include <ti/drivers/I2C.h>
// #include <ti/drivers/SPI.h>
// #include <ti/drivers/UART.h>
// #include <ti/drivers/Watchdog.h>

/* Driver configuration */
#include "ti_drivers_config.h"

const PIN_Config ButtonTableWakeUp[] = {
    CONFIG_GPIO_BUTTON_0_INPUT | PIN_INPUT_EN | PIN_PULLUP | PINCC26XX_WAKEUP_NEGEDGE,
    PIN_TERMINATE                                 /* Terminate list */
};

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    /* 1 second delay */
    uint32_t time = 1;

    /* Call driver init functions */
    GPIO_init();
    // I2C_init();
    // SPI_init();
    // UART_init();
    // Watchdog_init();

    /* Configure the LED pin */
    GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);

    /* Turn on user LED */
    GPIO_write(CONFIG_GPIO_LED_0, CONFIG_GPIO_LED_ON);

    while (1) {
        //sleep(time);
        PINCC26XX_setWakeup(ButtonTableWakeUp);
        PowerCC26XX_standbyPolicy();
        GPIO_toggle(CONFIG_GPIO_LED_0);
    }
}

Best Regards.

Kong