3. FR8008GP进入sleep异常

FR8008GP进入sleep异常

  • 0

    进入sleep后自动复位，是什么原因

    0
  • M

    有以下原因
    1、不能关闭串口0
    2、使用最新版本sdk确保user_entry_after_sleep_imp里面调用了pmu_calibration_start这个函数
    attribute((section("ram_code"))) void user_entry_before_sleep_imp(void)
    {
    pmu_calibration_stop();

    uart_putc_noint_no_wait(UART0, 's');
co_delay_100us(1);

pmu_set_pin_to_PMU(GPIO_PORT_A, (1<<GPIO_BIT_0));
pmu_set_pin_dir(GPIO_PORT_A, (1<<GPIO_BIT_0), GPIO_DIR_IN);
pmu_set_pin_pull(GPIO_PORT_A, (1<<GPIO_BIT_0),GPIO_PULL_NONE);

    }

    /*********************************************************************

    • @fn user_entry_after_sleep_imp

    • @brief After system wakes up from sleep mode, user_entry_after_sleep_imp()

    •      will be called, MCU peripherals need to be initialized again, 

    •      this can be done in user_entry_after_sleep_imp(). MCU peripherals

    •      status will not be kept during the sleep.

    • @param None.

    • @return None.
      */
      attribute((section("ram_code"))) void user_entry_after_sleep_imp(void)
      {
      pmu_set_pin_to_CPU(GPIO_PORT_A, (1<<GPIO_BIT_0));

      system_set_port_mux(GPIO_PORT_A, GPIO_BIT_0, PORTA0_FUNC_UART0_RXD);
      system_set_port_mux(GPIO_PORT_A, GPIO_BIT_1, PORTA1_FUNC_UART0_TXD);
      uart_init(UART0, 1152);
      fr_uart_enableIrq(UART0, Uart_irq_erbfi);

      /* RC calibration start. Ensure the accuracy of sleep wake time */
      pmu_calibration_start(PMU_CALI_SEL_RCLFOSC, LP_RC_CALIB_CNT);

      uart_putc_noint_no_wait(UART0, 'w');
      co_delay_100us(1);

      NVIC_EnableIRQ(PMU_IRQn);
      }

    0
    0
     1 条回复
  • 0

    @mars 这样配置了还不行，已经把按键设置成了唤醒源，按键配置时需要配置普通输入模式还是外部中断模式，目前配置成普通输入模式后设置成唤醒源，进入sleep后，按按键打印freqchip

    0
  • M

    sleep之后gpio会掉电，要使用pmu开控制io口有对应的
    pmu_set_pin_to_PMU
    pmu_set_pin_mux
    pmu_set_pin_dir
    然后对应的中断在pmu_isr
    还有疑问请联系我的qq:1063246644

    0