Reset the device by long pressing the button.

Author: jedie

README.md

@@ -32,6 +32,7 @@ The device will do:
 Point you Webserver to the IP from the device.
 
 You can turn the switch on/off by the web page or the device button.
+Reset the device by long pressing the button.
 
 
 ## Screenshot

src/button_handler.py

@@ -0,0 +1,55 @@
+import gc
+import sys
+
+import machine
+import utime as time
+from leds import power_led, relay
+from pins import button_pin
+
+
+def get_debounced_value(pin):
+    """
+    get debounced value from pin by waiting for stable value
+    """
+    cur_value = pin.value()
+    stable = 0
+    while stable < 40:
+        if pin.value() == cur_value:
+            stable += 1
+        else:
+            stable = 0
+            cur_value = pin.value()
+        time.sleep_ms(1)
+    return cur_value
+
+
+class Button:
+    down_start = None
+
+    def irq_handler(self, pin):
+        power_led.off()
+        button_value = get_debounced_value(pin)
+        power_led.on()
+
+        print('button_value:', button_value)
+        if button_value == 0:
+            # button pressed
+            self.down_start = time.ticks_ms()
+        elif button_value == 1:
+            # button released
+            duration_ms = time.ticks_diff(time.ticks_ms(), self.down_start)
+            print('duration_ms:', duration_ms)
+            if duration_ms > 2000:
+                print('reset after long press...')
+                power_led.flash(sleep=0.1, count=20)
+                machine.reset()
+                sys.exit()
+
+            print('old state:', relay)
+            relay.toggle()
+            print('new state:', relay)
+
+        gc.collect()
+
+
+button_pin.irq(Button().irq_handler)

src/main.py

@@ -14,44 +14,14 @@
 from wifi import wifi  # noqa isort:skip
 from ntp import ntp_sync  # noqa isort:skip
 from leds import power_led  # noqa isort:skip
+import button_handler  # noqa isort:skip
 
 print('watchdog:', watchdog)
 print('wifi:', wifi)
 print('ntp_sync:', ntp_sync)
 print('power_led:', power_led)
 
 
-def get_debounced_value(pin):
-    """get debounced value from pin by waiting for 20 msec for stable value"""
-    cur_value = pin.value()
-    stable = 0
-    while stable < 20:
-        if pin.value() == cur_value:
-            stable = stable + 1
-        else:
-            stable = 0
-            cur_value = pin.value()
-    time.sleep_ms(1)
-    return cur_value
-
-
-def button_pressed(pin):
-    print('button pressed...')
-    cur_button_value = get_debounced_value(pin)
-    if cur_button_value == 1:
-        if relay_pin.value() == 1:
-            print('turn off by button.')
-            relay_pin.value(0)
-        else:
-            print('turn on by button.')
-            relay_pin.value(1)
-
-        garbage_collection()
-
-
-button_pin = machine.Pin(0, machine.Pin.IN)
-button_pin.irq(button_pressed)
-
 
 print('gc.collect()')
 gc.collect()