LP-EM-CC2340R5: issue on shutdown and wakeup

Hi Kevin,

Thank you for the feedback, we definitely need to add this example to our SDK.

I just wrote this example based on the gpiointerrupt example, the device entered in shutdown mode by  pressing left button and wake up by pressing the right one.

Tell me if it works on your side,

regards,

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/*
 *  ======== gpiointerrupt.c ========
 */
#include <stdint.h>
#include <stddef.h>
#include <semaphore.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/power/PowerCC23X0.h>

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

static sem_t sem;

/*
 *  ======== gpioButtonFxn0 ========
 *  Callback function for the GPIO interrupt on CONFIG_GPIO_BUTTON_0.
 *
 *  Note: GPIO interrupts are cleared prior to invoking callbacks.
 */
void gpioButtonFxn0(uint_least8_t index)
{
    /* Toggle an LED */
    GPIO_toggle(CONFIG_GPIO_LED_0);
    sem_post(&sem);
}


/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    /* Call driver init functions */
    GPIO_init();

    /* Configure the LED and button pins */
    GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
    GPIO_setConfig(CONFIG_GPIO_BUTTON_0, GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_FALLING);

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

    /* Install Button callback */
    GPIO_setCallback(CONFIG_GPIO_BUTTON_0, gpioButtonFxn0);

    PowerLPF3_ResetReason resetReason = PowerLPF3_getResetReason();

    /* If we are waking up from shutdown, we do something extra. */
    if (resetReason == PowerLPF3_RESET_SHUTDOWN_IO)
    {
       /* Application code must always disable the IO latches when coming out of shutdown */
       PowerLPF3_releaseLatches();
    }
    int32_t semStatus;
    /* Create semaphore */
    semStatus = sem_init(&sem, 0, 0);
    if (semStatus != 0)
    {
      /* Error creating semaphore */
      while (1) {}
    }

    /* Enable interrupts */
    GPIO_enableInt(CONFIG_GPIO_BUTTON_0);

    /* Do not write until read callback executes */
      sem_wait(&sem);

      /* Configure DIO for wake up from shutdown */
      GPIO_setConfig(CONFIG_GPIO_BUTTON_1, GPIO_CFG_IN_PU | GPIO_CFG_SHUTDOWN_WAKE_LOW);
      /* Go to shutdown */
      Power_shutdown(0, 0);

      /* Should never get here, since shutdown will reset. */
          while (1) {}

    return (NULL);
}

Hi Kevin,

Based on the build log it appears that you have referenced a TI-RTOS7 CC2652R7 example for your Free-RTOS CC2340R5 project.  These RTOS versions are incompatible and my recommendation is that you import the CC2340R5 gpiostandby project, confirm that the build succeeds, and then compare the differences between the gpiostandby and gpioshutdown projects before applying the necessary changes to your base CC2340R5 gpiostandby project.  Here is a Quick Start Guide to help you set up your environment.  

Regards,
Ryan

Hi Kevin,

I suggest you to have a look at the menu in the basic_ble example, in common>MenuModule you'll find am example on button long press and button press. In the parameters of Button_Params you'll find one called longPressDuration. It should be useful for your application.

regards,