[经验分享] 【短时天气预报系统】indoor装置基本功能实现

ljj3166 2021-6-20 13:35 楼主

周末开撸

整理处理了一下indoor的基本功能

功耗

Indoor用到了一块eink屏，需要开辟一大块内存

并且需要保持实时状态

为了方便，这里就没采用休眠的方式来降低功耗

而是采用待机的方式

加上没有对这块老旧的eink屏进行电源控制设计

如果采用软件指令使其进入sleep，就无法通过指令唤醒了

所以只能通过软复位的方式

将eink复位待机，然后写入后续的数据

RSL10待机电流大约在30uA左右

eink待机大约在60uA左右

合计大约90uA

看看RSL10的待机代码

Standby模式配置

void Standby_Mode_Configure(struct standby_mode_env_tag *standby_mode_env) {
        /* If RTC clock source is XTAL 32 kHz oscillator */
        if (RTC_CLK_SRC == RTC_CLK_SRC_XTAL32K) {
                /* Enable XTAL32K oscillator amplitude control
                 * Set XTAL32K load capacitance to 0x38: 22.4 pF
                 * Enable XTAL32K oscillator */

                ACS->XTAL32K_CTRL = (XTAL32K_XIN_CAP_BYPASS_DISABLE |
                XTAL32K_AMPL_CTRL_ENABLE |
                XTAL32K_NOT_FORCE_READY
                                | (XTAL32K_CLOAD_TRIM_VALUE << ACS_XTAL32K_CTRL_CLOAD_TRIM_Pos)
                                | (XTAL32K_ITRIM_VALUE << ACS_XTAL32K_CTRL_ITRIM_Pos) |
                                XTAL32K_IBOOST_DISABLE |
                                XTAL32K_ENABLE);

                /* Wait for XTAL32K oscillator to be ready */
                while (ACS_XTAL32K_CTRL->READY_ALIAS != XTAL32K_OK_BITBAND) {
                }

                LowPowerClock_Source_Set(0);
        }

        /* Else: if RTC clock source is RC 32 kHz oscillator */
        else if (RTC_CLK_SRC == RTC_CLK_SRC_RC_OSC) {
                ACS_VDDC_CTRL->STANDBY_VTRIM_BYTE = ACS_VDDC_CTRL->VTRIM_BYTE;

                /* Start the RC oscillator */
                Sys_Clocks_Osc32kHz(RC_OSC_ENABLE | RC_OSC_NOM);

                /* Read the OSC_32K calibration trim data from NVR4 */
                unsigned int osc_calibration_value = 0;
                Sys_ReadNVR4(MANU_INFO_OSC_32K, 1, (unsigned
                int*) &osc_calibration_value);

                /* Use calibrated value for RC clock */
                if (osc_calibration_value != 0xFFFFFFFF) {
                        ACS_RCOSC_CTRL->FTRIM_32K_BYTE = (uint8_t) (osc_calibration_value);
                }

                /* Delay for 4 ms */
                Sys_Delay_ProgramROM(4 * (SystemCoreClock / 1000));

                LowPowerClock_Source_Set(1);

                /* In us, for typical RCOSC until measurement is obtained. */
                RTCCLK_Period_Value_Set(RCCLK_PERIOD_VALUE);

                /* Set-up the Audiosink block for frequency measurement */
                Sys_Audiosink_ResetCounters();
                Sys_Audiosink_InputClock(0, AUDIOSINK_CLK_SRC_STANDBYCLK);
                Sys_Audiosink_Config(AUDIO_SINK_PERIODS_16, 0, 0);

                /* Enable interrupts */
                NVIC_ClearPendingIRQ(AUDIOSINK_PERIOD_IRQn);
                NVIC_EnableIRQ(AUDIOSINK_PERIOD_IRQn);

                /* Start period counter to start period measurement */
                AUDIOSINK_CTRL->PERIOD_CNT_START_ALIAS = 1;
        }

        /* else: if RTC clock source is external oscillator */
        else {
                DIO->CFG[EXT_LOW_POWER_CLK_GPIO_NUM] = (DIO_2X_DRIVE |
                DIO_LPF_DISABLE |
                DIO_NO_PULL |
                DIO_MODE_INPUT);

                LowPowerClock_Source_Set(1);

                /* Clock period in us for external clock */
                RTCCLK_Period_Value_Set(EXT_LOW_POWER_CLK_PERIOD_VALUE);

                /* Set-up the Audiosink block for frequency measurement */
                Sys_Audiosink_ResetCounters();
                Sys_Audiosink_InputClock(0, AUDIOSINK_CLK_SRC_STANDBYCLK);
                Sys_Audiosink_Config(AUDIO_SINK_PERIODS_16, 0, 0);

                /* Enable interrupts */
                NVIC_ClearPendingIRQ(AUDIOSINK_PERIOD_IRQn);
                NVIC_EnableIRQ(AUDIOSINK_PERIOD_IRQn);

                /* Start period counter to start period measurement */
                AUDIOSINK_CTRL->PERIOD_CNT_START_ALIAS = 1;
        }

        standby_mode_env->RTC_clk_src = RTC_CLK_SRC;

        /* Update wake-up configuration and control registers */
        standby_mode_env->wakeup_cfg = WAKEUP_DELAY_16 |
        WAKEUP_WAKEUP_PAD_FALLING |
        WAKEUP_DIO3_DISABLE |
        WAKEUP_DIO2_DISABLE |
        WAKEUP_DIO1_DISABLE |
        WAKEUP_DIO0_DISABLE;

        /* Update wake-up control and clear previous wake-up events */
        standby_mode_env->wakeup_ctrl = PADS_RETENTION_DISABLE |
        WAKEUP_DCDC_OVERLOAD_CLEAR |
        WAKEUP_PAD_EVENT_CLEAR |
        WAKEUP_RTC_ALARM_CLEAR |
        WAKEUP_BB_TIMER_CLEAR |
        WAKEUP_DIO3_EVENT_CLEAR |
        WAKEUP_DIO2_EVENT_CLEAR |
        WAKEUP_DIO1_EVENT_CLEAR |
        WAKEUP_DIO0_EVENT_CLEAR;

        /* Set DMA channel used to save/restore RF registers
         * in each standby/wake-up cycle */
        standby_mode_env->DMA_channel_RF = DMA_CHAN_SLP_WK_RF_REGS_COPY;

        /* Initialize some system blocks for standby mode,
         * save RF registers and memory banks*/
        Sys_PowerModes_Standby_Init(standby_mode_env);

        /* BLE not in standby mode and ready for normal operations */
        BLE_Is_Awake_Flag_Set();
}

主循环中空闲时段进入standby

GLOBAL_INT_DISABLE();
                BLE_Power_Mode_Enter(&standby_mode_env, POWER_MODE_STANDBY);
                GLOBAL_INT_RESTORE();

                /* Wait for an event before executing the scheduler again */
                SYS_WAIT_FOR_EVENT;

大概测了一下待机电流