Failed to wake up the chip in tickless

I tried to make the chip enter sleep mode and wake up, the chip could enter sleep mode but failed to wake up.

Here is the code of main.c, actually I copied this code from official example to my KM4_project. The example path is ambd_sdk/project/realtek_amebaD_va0_example/example_sources/PMC/raw/pm_tickless/src/main.c

#include "ameba_soc.h"
#include "main.h"

#if defined(CONFIG_WIFI_NORMAL) && defined(CONFIG_NETWORK)
extern VOID wlan_network(VOID);
#endif

static u32 app_loguart_suspend(u32 expected_idle_time, void *param)
{
    // For peripherals that need turned off before sleep, call disable or deinit peripheral here
    DiagPrintf("app_loguart_suspend\n");

    return TRUE;
}

static u32 app_loguart_resume(u32 expected_idle_time, void *param)
{
    // For peripherals that are turned off before sleep, call enable or init peripheral here
    DiagPrintf("app_loguart_resume\n");
    /*set km4 active time*/
    pmu_set_sysactive_time(5000);
    return TRUE;
}

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
    /* init console */
    shell_recv_all_data_onetime = 1;

    InterruptRegister(IPC_INTHandler, IPC_IRQ, (u32)IPCM0_DEV, 10);
    InterruptEn(IPC_IRQ, 10);

    shell_init_rom(0, 0);   
    shell_init_ram();
    ipc_table_init();

    /* Register Log Uart Callback function */
    InterruptRegister((IRQ_FUN) shell_uart_irq_rom, UART_LOG_IRQ, (u32)NULL, 10);
    InterruptEn(UART_LOG_IRQ,10);

#if defined(CONFIG_WIFI_NORMAL) && defined(CONFIG_NETWORK)
    rtw_efuse_boot_write();

    wlan_network();
#endif
    /*set KM4 sleep type*/
    pmu_set_sleep_type(SLEEP_PG);
    /*acquire wakelock to avoid KM4 enter sleep mode*/
    pmu_acquire_wakelock(PMU_OS);

    pmu_register_sleep_callback(PMU_LOGUART_DEVICE, (PSM_HOOK_FUN)app_loguart_suspend, NULL, (PSM_HOOK_FUN)app_loguart_resume, NULL);

    /*release wakelock to allow KM4 enter sleep mode*/
    pmu_release_wakelock(PMU_OS);
    /* Enable Schedule, Start Kernel */
    vTaskStartScheduler();
}

The LOG_UART printed app_loguart_suspend which means the chip entered the sleep mode, but when I sent ENTER, the LOG_UART sent ENTER back without waking up the chip.

How could I wake up the chip?

ambiot / ambd_sdk

Failed to wake up the chip in tickless #33