[讨论]

蓝牙低功耗

魏越川

2025-7-31 11:05:00 406 蓝牙低功耗低功耗模

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

@fn CH58x_LowPower_Light
[url=home.php?mod=space&uid=2666770]@Brief[/url] 启动浅度睡眠（保持蓝牙功能）
[url=home.php?mod=space&uid=3142012]@param[/url] time - 唤醒的时间点（RTC绝对值）
[url=home.php?mod=space&uid=1141835]@Return[/url] state.

__HIGH_CODE

uint32_t CH58x_LowPower_Light(uint32_t time)

{

#if (defined(HAL_SLEEP)) && (HAL_SLEEP == TRUE)

volatile uint32_t i;

uint32_t time_tign, time_sleep, time_curr;

unsigned long irq_status;


// 提前唤醒

if (time <= WAKE_UP_RTC_MAX_TIME)

{

    time_tign = time + (RTC_MAX_COUNT - WAKE_UP_RTC_MAX_TIME);

}

else

{

    time_tign = time - WAKE_UP_RTC_MAX_TIME;

}


SYS_DisableAllIrq(&irq_status);

time_curr = RTC_GetCycle32k();

// 检测睡眠时间

if (time_tign < time_curr)

{

    time_sleep = time_tign + (RTC_MAX_COUNT - time_curr);

}

else

{

    time_sleep = time_tign - time_curr;

}


// 若睡眠时间小于最小睡眠时间或大于最大睡眠时间，则不睡眠

if ((time_sleep < SLEEP_RTC_MIN_TIME) ||

    (time_sleep > SLEEP_RTC_MAX_TIME))

{

    SYS_RecoverIrq(irq_status);

    return 2;

}


RTC_SetTignTime(time_tign);

SYS_RecoverIrq(irq_status);

#if (DEBUG == Debug_UART0) // 使用其他串口输出打印信息需要修改这行代码

while ((R8_UART0_LSR & RB_LSR_TX_ALL_EMP) == 0)

{

    __nop();

}

#endif

// 浅度休眠模式 - 保持蓝牙功能

if (!RTCTigFlag)

{

    PRINT("[SLEEP] Light sleep: Entering LowPower_Sleep (BLE functionality maintained)\r\n");

    PRINT("[SLEEP] Light sleep: Parameters - RB_PWR_RAM32K=0x%02X, RB_PWR_RAM96K=0x%02X, RB_PWR_EXTEND=0x%02X\r\n",

          RB_PWR_RAM32K, RB_PWR_RAM96K, RB_PWR_EXTEND);

   

    // 配置唤醒事件（在进入睡眠前）

    sys_safe_access_enable();

    R8_SLP_WAKE_CTRL |= RB_SLP_RTC_WAKE; // RTC唤醒

    sys_safe_access_disable();

    PRINT("[SLEEP] Light sleep: RTC wake event configured\r\n");

   

    // 验证RTC配置

    PRINT("[SLEEP] Light sleep: RTC trigger time set to %lu\r\n", time);

    PRINT("[SLEEP] Light sleep: RTC mode control = 0x%02X\r\n", R8_RTC_MODE_CTRL);

    PRINT("[SLEEP] Light sleep: Sleep wake control = 0x%02X\r\n", R8_SLP_WAKE_CTRL);

   

    // 使用Sleep模式，保持蓝牙功能

    // RB_PWR_EXTEND 确保BLE单元保留供电

    LowPower_Sleep(RB_PWR_RAM32K | RB_PWR_RAM96K | RB_PWR_EXTEND);

   

    PRINT("[SLEEP] Light sleep: LowPower_Sleep completed, restoring system\r\n");

   

    // 唤醒后处理

    R8_RTC_FLAG_CTRL = (RB_RTC_TMR_CLR | RB_RTC_TRIG_CLR);

    RTC_SetTignTime(time);

    sys_safe_access_enable();

    R8_HFCK_PWR_CTRL |= RB_CLK_XT32M_KEEP;

    sys_safe_access_disable();

   

    // 不使用Halt模式，保持蓝牙功能

    // LowPower_Halt();  // 注释掉，避免停止蓝牙功能

   

    R8_RTC_FLAG_CTRL = (RB_RTC_TMR_CLR | RB_RTC_TRIG_CLR);

    HSECFG_Current(HSE_RCur_100); // 降为额定电流(低功耗函数中提升了HSE偏置电流)

   

    PRINT("[SLEEP] Light sleep: Completed - BLE functionality preserved\r\n");

    return 0;

}