StopWatch

支持以下产品：

StopWatch

UiFlow2 示例

RTC 时钟

在 UiFlow2 中打开 stopwatch_rtc_example.m5f2 项目。

此示例在圆形屏幕上显示数字时钟（HH:MM:SS），时间来自内置 RTC。按 BtnA 可循环切换时、分、秒的调节模式（当前字段以红色高亮）。按 BtnB 可增加所选字段的数值。调节完秒后，再次按 BtnA 将新时间写入 RTC。

UiFlow2 代码块：

stopwatch_rtc_example.png

示例输出：

无

电源管理

在 UiFlow2 中打开 stopwatch_power_example.m5f2 项目。

此示例监测 USB、电池和 Grove 端口的电压，并显示充电状态（充电时电池文字变为绿色）。按 BtnA 可开关 Grove 外部输出（5V OUT）。按 BtnB 可开关电池充电。

UiFlow2 代码块：

stopwatch_power_example.png

示例输出：

无

录音与播放

在 UiFlow2 中打开 stopwatch_aduio_example.m5f2 项目。

此示例演示录音与播放。按 BtnA 开始录制 5 秒（屏幕显示倒计时）。未在录制时按 BtnB 播放已录制的文件。界面显示 Idle、Recording… 或 Playing… 状态。

UiFlow2 代码块：

stopwatch_aduio_example.png

示例输出：

无

MicroPython 示例

RTC 时钟

此示例在圆形屏幕上显示数字时钟（HH:MM:SS），时间来自内置 RTC。按 BtnA 可循环切换时、分、秒的调节模式（当前字段以红色高亮）。按 BtnB 可增加所选字段的数值。调节完秒后，再次按 BtnA 将新时间写入 RTC。

MicroPython 代码块：

  1import os, sys, io
  2import M5
  3from M5 import *
  4import m5ui
  5import lvgl as lv
  6from hardware import RTC
  7import time
  8
  9
 10page0 = None
 11label_tip = None
 12label_hour = None
 13label_min = None
 14label_second = None
 15label_dot1 = None
 16label_dot2 = None
 17rtc = None
 18
 19
 20sw = None
 21hour = None
 22minute = None
 23second = None
 24last_time = None
 25
 26
 27def btna_was_click_event(state):
 28    global \
 29        page0, \
 30        label_tip, \
 31        label_hour, \
 32        label_min, \
 33        label_second, \
 34        label_dot1, \
 35        label_dot2, \
 36        rtc, \
 37        sw, \
 38        hour, \
 39        minute, \
 40        second, \
 41        last_time
 42    Speaker.tone(1000, 200)
 43    sw = (sw if isinstance(sw, (int, float)) else 0) + 1
 44    if sw == 1:
 45        label_hour.set_text_color(0xFF0000, 255, 0)
 46    elif sw == 2:
 47        label_hour.set_text_color(0x00CCCC, 255, 0)
 48        label_min.set_text_color(0xFF0000, 255, 0)
 49    elif sw == 3:
 50        label_min.set_text_color(0x00CCCC, 255, 0)
 51        label_second.set_text_color(0xFF0000, 255, 0)
 52    else:
 53        label_second.set_text_color(0x00CCCC, 255, 0)
 54        sw = 0
 55        rtc.init((2026, 5, 21, hour, minute, second, 339, 0))
 56
 57
 58def btnb_was_click_event(state):
 59    global \
 60        page0, \
 61        label_tip, \
 62        label_hour, \
 63        label_min, \
 64        label_second, \
 65        label_dot1, \
 66        label_dot2, \
 67        rtc, \
 68        sw, \
 69        hour, \
 70        minute, \
 71        second, \
 72        last_time
 73    Speaker.tone(1000, 200)
 74    if sw == 1:
 75        hour = (hour if isinstance(hour, (int, float)) else 0) + 1
 76        if hour > 23:
 77            hour = 0
 78    elif sw == 2:
 79        minute = (minute if isinstance(minute, (int, float)) else 0) + 1
 80        if minute > 59:
 81            minute = 0
 82    elif sw == 3:
 83        second = (second if isinstance(second, (int, float)) else 0) + 1
 84        if second > 59:
 85            second = 0
 86    else:
 87        sw = 0
 88
 89
 90def setup():
 91    global \
 92        page0, \
 93        label_tip, \
 94        label_hour, \
 95        label_min, \
 96        label_second, \
 97        label_dot1, \
 98        label_dot2, \
 99        rtc, \
100        sw, \
101        hour, \
102        minute, \
103        second, \
104        last_time
105
106    M5.begin()
107    m5ui.init()
108    page0 = m5ui.M5Page(bg_c=0x000000)
109    label_tip = m5ui.M5Label(
110        "Clock",
111        x=176,
112        y=40,
113        text_c=0x10AACD,
114        bg_c=0xFFFFFF,
115        bg_opa=0,
116        font=lv.font_montserrat_40,
117        parent=page0,
118    )
119    label_hour = m5ui.M5Label(
120        "00",
121        x=100,
122        y=208,
123        text_c=0x03C4E3,
124        bg_c=0xFFFFFF,
125        bg_opa=0,
126        font=lv.font_montserrat_48,
127        parent=page0,
128    )
129    label_min = m5ui.M5Label(
130        "00",
131        x=200,
132        y=206,
133        text_c=0x03C4E3,
134        bg_c=0xFFFFFF,
135        bg_opa=0,
136        font=lv.font_montserrat_48,
137        parent=page0,
138    )
139    label_second = m5ui.M5Label(
140        "00",
141        x=300,
142        y=205,
143        text_c=0x03C4E3,
144        bg_c=0xFFFFFF,
145        bg_opa=0,
146        font=lv.font_montserrat_48,
147        parent=page0,
148    )
149    label_dot1 = m5ui.M5Label(
150        ":",
151        x=177,
152        y=202,
153        text_c=0x03C4E3,
154        bg_c=0xFFFFFF,
155        bg_opa=0,
156        font=lv.font_montserrat_48,
157        parent=page0,
158    )
159    label_dot2 = m5ui.M5Label(
160        ":",
161        x=275,
162        y=202,
163        text_c=0x03C4E3,
164        bg_c=0xFFFFFF,
165        bg_opa=0,
166        font=lv.font_montserrat_48,
167        parent=page0,
168    )
169
170    BtnA.setCallback(type=BtnA.CB_TYPE.WAS_CLICKED, cb=btna_was_click_event)
171    BtnB.setCallback(type=BtnB.CB_TYPE.WAS_CLICKED, cb=btnb_was_click_event)
172
173    page0.screen_load()
174    rtc = RTC()
175    hour = 11
176    minute = 10
177    second = 0
178    sw = 0
179    label_dot1.align_to(page0, lv.ALIGN.TOP_MID, -45, 201)
180    label_dot2.align_to(page0, lv.ALIGN.TOP_MID, 45, 201)
181    Speaker.begin()
182    Speaker.setVolumePercentage(0.9)
183    Speaker.tone(1000, 300)
184
185
186def loop():
187    global \
188        page0, \
189        label_tip, \
190        label_hour, \
191        label_min, \
192        label_second, \
193        label_dot1, \
194        label_dot2, \
195        rtc, \
196        sw, \
197        hour, \
198        minute, \
199        second, \
200        last_time
201    M5.update()
202    if (time.ticks_diff((time.ticks_ms()), last_time)) >= 500:
203        last_time = time.ticks_ms()
204        if sw == 0:
205            hour = (rtc.local_datetime())[4]
206            minute = (rtc.local_datetime())[5]
207            second = (rtc.local_datetime())[6]
208        if hour < 10:
209            label_hour.set_text(str((str("0") + str(hour))))
210        else:
211            label_hour.set_text(str(hour))
212        label_hour.align_to(page0, lv.ALIGN.TOP_MID, -90, 205)
213        if minute < 10:
214            label_min.set_text(str((str("0") + str(minute))))
215        else:
216            label_min.set_text(str(minute))
217        label_min.align_to(page0, lv.ALIGN.TOP_MID, 0, 205)
218        if second < 10:
219            label_second.set_text(str((str("0") + str(second))))
220        else:
221            label_second.set_text(str(second))
222        label_second.align_to(page0, lv.ALIGN.TOP_MID, 90, 205)
223
224
225if __name__ == "__main__":
226    try:
227        setup()
228        while True:
229            loop()
230    except (Exception, KeyboardInterrupt) as e:
231        try:
232            m5ui.deinit()
233            from utility import print_error_msg
234
235            print_error_msg(e)
236        except ImportError:
237            print("please update to latest firmware")

示例输出：

无

电源管理

此示例监测 USB、电池和 Grove 端口的电压，并显示充电状态（充电时电池文字变为绿色）。按 BtnA 可开关 Grove 外部输出（5V OUT）。按 BtnB 可开关电池充电。

MicroPython 代码块：

  1import os, sys, io
  2import M5
  3from M5 import *
  4import m5ui
  5import lvgl as lv
  6import time
  7
  8
  9page0 = None
 10label_title = None
 11label_usb = None
 12label_bat = None
 13label_grove = None
 14label_tip1 = None
 15label_tip2 = None
 16
 17
 18grove_en = None
 19charge_en = None
 20last_time = None
 21
 22
 23def btna_was_click_event(state):
 24    global \
 25        page0, \
 26        label_title, \
 27        label_usb, \
 28        label_bat, \
 29        label_grove, \
 30        label_tip1, \
 31        label_tip2, \
 32        grove_en, \
 33        charge_en, \
 34        last_time
 35    Speaker.tone(1000, 200)
 36    grove_en = not grove_en
 37    if grove_en:
 38        Power.setExtOutput(True)
 39        label_grove.set_text_color(0xFF0000, 255, 0)
 40    else:
 41        Power.setExtOutput(False)
 42        label_grove.set_text_color(0xFFFFFF, 255, 0)
 43
 44
 45def btnb_was_click_event(state):
 46    global \
 47        page0, \
 48        label_title, \
 49        label_usb, \
 50        label_bat, \
 51        label_grove, \
 52        label_tip1, \
 53        label_tip2, \
 54        grove_en, \
 55        charge_en, \
 56        last_time
 57    Speaker.tone(1000, 200)
 58    charge_en = not charge_en
 59    if charge_en:
 60        Power.setBatteryCharge(True)
 61    else:
 62        Power.setBatteryCharge(False)
 63
 64
 65def setup():
 66    global \
 67        page0, \
 68        label_title, \
 69        label_usb, \
 70        label_bat, \
 71        label_grove, \
 72        label_tip1, \
 73        label_tip2, \
 74        grove_en, \
 75        charge_en, \
 76        last_time
 77
 78    M5.begin()
 79    m5ui.init()
 80    page0 = m5ui.M5Page(bg_c=0x000000)
 81    label_title = m5ui.M5Label(
 82        "Power test",
 83        x=123,
 84        y=40,
 85        text_c=0x10AACD,
 86        bg_c=0xFFFFFF,
 87        bg_opa=0,
 88        font=lv.font_montserrat_40,
 89        parent=page0,
 90    )
 91    label_usb = m5ui.M5Label(
 92        "USB: --mV",
 93        x=170,
 94        y=135,
 95        text_c=0xFFFFFF,
 96        bg_c=0x000000,
 97        bg_opa=0,
 98        font=lv.font_montserrat_24,
 99        parent=page0,
100    )
101    label_bat = m5ui.M5Label(
102        "Battery: --mV",
103        x=151,
104        y=170,
105        text_c=0xFFFFFF,
106        bg_c=0x000000,
107        bg_opa=0,
108        font=lv.font_montserrat_24,
109        parent=page0,
110    )
111    label_grove = m5ui.M5Label(
112        "Grove: --mV",
113        x=160,
114        y=205,
115        text_c=0xFFFFFF,
116        bg_c=0x000000,
117        bg_opa=0,
118        font=lv.font_montserrat_24,
119        parent=page0,
120    )
121    label_tip1 = m5ui.M5Label(
122        "Botton A Control Grove",
123        x=94,
124        y=330,
125        text_c=0xE9E20E,
126        bg_c=0x000000,
127        bg_opa=0,
128        font=lv.font_montserrat_24,
129        parent=page0,
130    )
131    label_tip2 = m5ui.M5Label(
132        "Botton B Control Charge",
133        x=82,
134        y=366,
135        text_c=0xE9E20E,
136        bg_c=0x000000,
137        bg_opa=0,
138        font=lv.font_montserrat_24,
139        parent=page0,
140    )
141
142    BtnA.setCallback(type=BtnA.CB_TYPE.WAS_CLICKED, cb=btna_was_click_event)
143    BtnB.setCallback(type=BtnB.CB_TYPE.WAS_CLICKED, cb=btnb_was_click_event)
144
145    page0.screen_load()
146    Power.setBatteryCharge(True)
147    Power.setExtOutput(False)
148    grove_en = False
149    charge_en = False
150    Speaker.begin()
151    Speaker.setVolumePercentage(0.8)
152
153
154def loop():
155    global \
156        page0, \
157        label_title, \
158        label_usb, \
159        label_bat, \
160        label_grove, \
161        label_tip1, \
162        label_tip2, \
163        grove_en, \
164        charge_en, \
165        last_time
166    M5.update()
167    if (time.ticks_diff((time.ticks_ms()), last_time)) >= 500:
168        last_time = time.ticks_ms()
169        label_usb.set_text(str((str("USB: ") + str((str((Power.getVBUSVoltage())) + str("mV"))))))
170        label_usb.align_to(page0, lv.ALIGN.TOP_MID, 0, 135)
171        label_bat.set_text(
172            str((str("Battery: ") + str((str((Power.getBatteryVoltage())) + str("mV")))))
173        )
174        label_bat.align_to(page0, lv.ALIGN.TOP_MID, 0, 170)
175        label_grove.set_text(
176            str((str("Grove: ") + str((str((Power.getExtVoltage(M5.Power.PORT.A))) + str("mV")))))
177        )
178        label_grove.align_to(page0, lv.ALIGN.TOP_MID, 0, 205)
179        if Power.isCharging():
180            label_bat.set_text_color(0x33FF33, 255, 0)
181        else:
182            label_bat.set_text_color(0xFFFFFF, 255, 0)
183
184
185if __name__ == "__main__":
186    try:
187        setup()
188        while True:
189            loop()
190    except (Exception, KeyboardInterrupt) as e:
191        try:
192            m5ui.deinit()
193            from utility import print_error_msg
194
195            print_error_msg(e)
196        except ImportError:
197            print("please update to latest firmware")

示例输出：

无

录音与播放

此示例演示录音与播放。按 BtnA 开始录制 5 秒（屏幕显示倒计时）。未在录制时按 BtnB 播放已录制的文件。界面显示 Idle、Recording… 或 Playing… 状态。

MicroPython 代码块：

  1import os, sys, io
  2import M5
  3from M5 import *
  4import m5ui
  5import lvgl as lv
  6from audio import Recorder
  7import time
  8from audio import Player
  9
 10
 11page0 = None
 12label_title = None
 13label_count = None
 14label_state = None
 15label_tip1 = None
 16label_tip2 = None
 17recorder = None
 18player = None
 19
 20
 21flag_record = None
 22flag_play = None
 23record_start_time = None
 24remaining = None
 25RECORD_TIME = None
 26record_file_path = None
 27
 28
 29def btna_was_click_event(state):
 30    global \
 31        page0, \
 32        label_title, \
 33        label_count, \
 34        label_state, \
 35        label_tip1, \
 36        label_tip2, \
 37        recorder, \
 38        player, \
 39        flag_record, \
 40        flag_play, \
 41        record_start_time, \
 42        remaining, \
 43        RECORD_TIME, \
 44        record_file_path
 45    flag_record = True
 46
 47
 48def btnb_was_click_event(state):
 49    global \
 50        page0, \
 51        label_title, \
 52        label_count, \
 53        label_state, \
 54        label_tip1, \
 55        label_tip2, \
 56        recorder, \
 57        player, \
 58        flag_record, \
 59        flag_play, \
 60        record_start_time, \
 61        remaining, \
 62        RECORD_TIME, \
 63        record_file_path
 64    if not (recorder.is_recording()):
 65        flag_play = True
 66
 67
 68def setup():
 69    global \
 70        page0, \
 71        label_title, \
 72        label_count, \
 73        label_state, \
 74        label_tip1, \
 75        label_tip2, \
 76        recorder, \
 77        player, \
 78        flag_record, \
 79        flag_play, \
 80        record_start_time, \
 81        remaining, \
 82        RECORD_TIME, \
 83        record_file_path
 84
 85    M5.begin()
 86    m5ui.init()
 87    page0 = m5ui.M5Page(bg_c=0x000000)
 88    label_title = m5ui.M5Label(
 89        "Audio Test",
 90        x=128,
 91        y=40,
 92        text_c=0x10AACD,
 93        bg_c=0x000000,
 94        bg_opa=0,
 95        font=lv.font_montserrat_40,
 96        parent=page0,
 97    )
 98    label_count = m5ui.M5Label(
 99        "5",
100        x=218,
101        y=205,
102        text_c=0x10AACD,
103        bg_c=0x000000,
104        bg_opa=0,
105        font=lv.font_montserrat_48,
106        parent=page0,
107    )
108    label_state = m5ui.M5Label(
109        "Idle",
110        x=194,
111        y=116,
112        text_c=0x10CD53,
113        bg_c=0xFFFFFF,
114        bg_opa=0,
115        font=lv.font_montserrat_40,
116        parent=page0,
117    )
118    label_tip1 = m5ui.M5Label(
119        "Button B Play",
120        x=148,
121        y=366,
122        text_c=0xE9E20E,
123        bg_c=0x000000,
124        bg_opa=0,
125        font=lv.font_montserrat_24,
126        parent=page0,
127    )
128    label_tip2 = m5ui.M5Label(
129        "Button A Record",
130        x=131,
131        y=330,
132        text_c=0xE9E20E,
133        bg_c=0x000000,
134        bg_opa=0,
135        font=lv.font_montserrat_24,
136        parent=page0,
137    )
138
139    BtnA.setCallback(type=BtnA.CB_TYPE.WAS_CLICKED, cb=btna_was_click_event)
140    BtnB.setCallback(type=BtnB.CB_TYPE.WAS_CLICKED, cb=btnb_was_click_event)
141
142    page0.screen_load()
143    Mic.end()
144    Speaker.end()
145    recorder = Recorder(8000, 16, True)
146    player = Player(None)
147    player.set_vol(80)
148    RECORD_TIME = 5
149    record_file_path = "rec1.amr"
150    flag_record = False
151    flag_play = False
152
153
154def loop():
155    global \
156        page0, \
157        label_title, \
158        label_count, \
159        label_state, \
160        label_tip1, \
161        label_tip2, \
162        recorder, \
163        player, \
164        flag_record, \
165        flag_play, \
166        record_start_time, \
167        remaining, \
168        RECORD_TIME, \
169        record_file_path
170    M5.update()
171    if flag_record:
172        if not (recorder.is_recording()):
173            record_start_time = time.ticks_ms()
174            label_state.set_text(str("Recording..."))
175            label_state.set_text_color(0xFF0000, 255, 0)
176            label_state.align_to(page0, lv.ALIGN.TOP_MID, 0, 116)
177            Speaker.setPA(False)
178            recorder.record("file://flash/res/audio/" + str(record_file_path), RECORD_TIME, False)
179        else:
180            remaining = (
181                RECORD_TIME - (time.ticks_diff((time.ticks_ms()), record_start_time)) / 1000
182            )
183            if remaining > 0:
184                label_count.set_text(str(int(remaining)))
185            else:
186                label_count.set_text(str("0"))
187                flag_record = False
188                label_state.set_text(str("Idle"))
189                label_state.align_to(page0, lv.ALIGN.TOP_MID, 0, 116)
190                label_state.set_text_color(0x33CC00, 255, 0)
191    if not (recorder.is_recording()):
192        if flag_play:
193            flag_play = False
194            label_count.set_text(str(""))
195            label_state.set_text(str("Playing..."))
196            label_state.align_to(page0, lv.ALIGN.TOP_MID, 0, 116)
197            label_state.set_text_color(0xFF0000, 255, 0)
198            Speaker.setPA(True)
199            player.play(
200                "file://flash/res/audio/" + str(record_file_path), pos=0, volume=-1, sync=False
201            )
202        else:
203            if not (player.pos()):
204                label_state.align_to(page0, lv.ALIGN.TOP_MID, 0, 116)
205                label_count.set_text(str(RECORD_TIME))
206                label_state.set_text(str("Idle"))
207                label_state.set_text_color(0x33CC00, 255, 0)
208
209
210if __name__ == "__main__":
211    try:
212        setup()
213        while True:
214            loop()
215    except (Exception, KeyboardInterrupt) as e:
216        try:
217            m5ui.deinit()
218            from utility import print_error_msg
219
220            print_error_msg(e)
221        except ImportError:
222            print("please update to latest firmware")

示例输出：

无