低功耗模式

概述

深度睡眠模式（deep sleep mode）是 WQ7036 所支持的一种重要的低功耗模式。

所有子电源域都可进入或退出 deep sleep mode。在 deep sleep mode，系统采取如下节电措施：

  • 将电源域标准单元逻辑下电。

  • 将所有 RAM 转入低功耗模式。如不支持该模式，则下电。

  • 将所有 ROM 下电。

应用子系统的 deep sleep mode 等效于芯片级 deep sleep mode。即：当 Bluetooth 处于工作模式中，应用子系统不掉电。当 Bluetooth 处于连接模式（link mode）时，应用子系统在 Bluetooth 掉电后发起芯片级 deep sleep 流程，芯片进入 deep sleep mode，并关闭 DC/DC、LDO、PLL 等。在 deep sleep mode，仅 PMU 供电，芯片进入最小功耗状态。

API 介绍

This section introduces the LPM module's functions and how to use this driver.

Defines

WQ_LPM_PD_SHUTDOWN
WQ_LPM_CORE_IS_SHUTDOWN(x)

Enums

enum WQ_LPM_RAM_MODE

Values:

enumerator WQ_LPM_RAM_ON
enumerator WQ_LPM_RAM_RETENTION_1
enumerator WQ_LPM_RAM_RETENTION_2
enumerator WQ_LPM_RAM_OFF
enum WQ_LPM_ROM_MODE

Values:

enumerator WQ_LPM_ROM_ON
enumerator WQ_LPM_ROM_OFF
enum WQ_POWER_DOMAIN_STATUS

Values:

enumerator WQ_POWER_AWAKE_UP_STATE
enumerator WQ_POWER_SLEEP_IN_STATE

Functions

void wq_lpm_pmm_wakeup_rtc_init(void)

This function is to init the function of pmm waking up rtc.

void wq_lpm_enter_deepsleep(void)

This function is to let lpm enter deepsleep module.

void wq_lpm_exit_deepsleep(void)

Restore sleep state when exit from deepsleep.

WQ_RET wq_lpm_set_deepsleep_timer(uint32_t start_rtc, uint32_t time_ms)

This function is to set pmm rtc to wake up source.

参数:

  • start_rtc -- The rtc time sleep start

  • time_ms -- Total time allow to sleep

WQ_RET wq_lpm_set_shutdown_timer(uint32_t start_rtc, uint32_t time_ms)

This function is to set wakeup time from shutdwon mode .

参见

WQ_RET

参数:

  • start_rtc -- [in] RTC time when timing starts

  • time_ms -- [in] Shutdown time in millsecond

返回:

WQ_RET

void wq_lpm_init(void)

This function is to init lpm module.

uint32_t wq_lpm_get_deep_slp_cnt(void)

This function is to get the count of the deep sleep.

返回:

uint32_t is the count of the deep sleep.

uint32_t wq_lpm_get_perf_mon_cnt(uint8_t value)

This function is to get the count of the performance monitor.

参数:

value -- select the monitor.

返回:

uint32_t is the count.

void wq_lpm_enter_shutdown(void)

This function is to enter the shutdown.

void wq_lpm_get_power_domain_status(uint8_t *acore, uint8_t *bcore, uint8_t *dcore, uint8_t *audif)

This function is to get all power domain status.

参数:

  • acore -- is pointer to store ACORE power domain status.

  • bcore -- is pointer to store BCORE power domain status.

  • dcore -- is pointer to store DCORE power domain status.

  • audif -- is pointer to store AUDIO_INF power domain status.

uint8_t wq_lpm_get_power_domain_status_with_core(WQ_CORES core)

This function is to get power domain status with core.

参数:

core -- is specific cpu core id.

返回:

uint8_t The number of core power status 4 — core is power on 8 — core is power off done. *(not 4 or 8) — intermediate status.

WQ_RET wq_lpm_set_deepsleep_wakeup_src(WQ_DS_WAKEUP_SRC src, bool enable)

assign wakeup source

参数:

  • src -- the wakeup source assigned

  • enable -- enable or disable

void wq_lpm_set_dcdc_pulse_width(uint8_t pulse_width)

Set all dcdc08, dcdc12, dcdc18 pulse width.

参数:

pulse_width -- The pulse width to set, 0 - 15.

void wq_lpm_set_shutdown_wakeup_src(WQ_DS_WAKEUP_SRC src, bool enable)

Set wakeup source for full chip shutdown.

参见

WQ_DS_WAKEUP_SRC.

参数:

  • src -- wakeup source

  • enable -- enable or disable.