Power Manager

It contains some basic power related operations, peripheral power settings, shutdown, restart, low power consumption, etc.

Release of power button will cause an event: API_EVENT_ID_KEY_DOWN, API_EVENT_ID_KEY_UP

example:demo/pm

1. Enumerated type

1.1. Power_Type_t

Peripherals power supply

typedef enum{
    POWER_TYPE_VPAD = 0,            // GPIO0  ~ GPIO7  and GPIO25 ~ GPIO36    2.8V   //always on
    POWER_TYPE_MMC,                 // GPIO8  ~ GPIO13                        1.9V
    POWER_TYPE_LCD,                 // GPIO14 ~ GPIO18                        1.9V
    POWER_TYPE_CAM,                 // GPIO19 ~ GPIO24                        1.9V
    POWER_TYPE_MAX
}Power_Type_t;

1.2. Power_On_Cause_t

Cause of opening

typedef enum{
    POWER_ON_CAUSE_KEY = 0  ,
    POWER_ON_CAUSE_CHARGE   ,
    POWER_ON_CAUSE_ALARM    ,
    POWER_ON_CAUSE_EXCEPTION,
    POWER_ON_CAUSE_RESET    ,
    POWER_ON_CAUSE_MAX
}Power_On_Cause_t;

2. Function

2.1. PM_PowerEnable

bool PM_PowerEnable(Power_Type_t powerType, bool isOn);

Function

It is important to enable peripheral power. When you use peripherals, you must turn on the power supply before you can use it.

Parameters

• powerType: peripherals power supply
• isOn: switch

Return

• Whether or not it has been successfully set up

2.2. PM_SleepMode

void PM_SleepMode(bool isSleepMode);

Function

Low power mode, low power mode will reduce the main frequency to 32kHz, the program will still run, and can be called back to restore this function.

At the same time, it can turn off peripherals and their power to reduce power consumption.

Parameters

• isSleepMode：Whether or not to enter a low power mode, true enters

Return

None

2.3. PM_Voltage

uint16_t PM_Voltage(uint8_t* percent);

Function

Check the battery voltage

Parameters

• percent:Percentage of battery power

Return

• Voltage value, unit: milli V

2.4. PM_ShutDown

void PM_ShutDown();

Function

Turn off the machine

Parameters

None

Return

None

2.5. PM_Restart

void PM_Restart();

Function

Reboot system

Parameters

None

Return

None