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9a0602f9e5
* Products
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-> added accessories
* Getting started
-> re-structured getting started guide
-> removed some of the advanced stuff
* Tutorials / Examples
-> added categories
-> added new basic tutorials Sleep, GPIO and Pring
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-> added wifi Scan MAC tutorial
* Firmware API
-> added pysense pytrack pygate categories here
* Datasheets
-> added CE FCC and RoHS documents
-> added pysense2 and pytrack 2 templates
* Update firmware
-> new section, added all methods of updating the firmware
* License
-> put license in its own section
general remarks:
-> updated the layout / theme
no more red code text
codeblocks actually work now
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86 lines
2.3 KiB
Markdown
86 lines
2.3 KiB
Markdown
---
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title: "Touch"
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aliases:
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- tutorials/all/touch.html
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- tutorials/all/touch.md
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---
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Example of how to use the Touch class of the Machine module:
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```python
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from machine import Touch
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from machine import Timer
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import time
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class TouchPad:
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def __init__(self, pin, name):
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self.touch = Touch(pin)
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self.last_press = 0
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self.name = name
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self.pressed = False
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def ispressed(self):
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if self.touch.read() < (self.touch.init_value() * 2 / 3):
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self.pressed = True
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else:
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self.pressed = False
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return self.pressed
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def just_pressed(self):
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now = time.ticks_ms()
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if now - self.last_press < 500:
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return True
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else:
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return False
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def set_press(self):
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self.last_press = time.ticks_ms()
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class TouchController:
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def __init__(self, pads):
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self.pads = pads
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for pad in self.pads:
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pad.touch.init_value(1500)
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def check(self, alarm):
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for pad in self.pads:
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if pad.ispressed() and not pad.just_pressed():
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pad.set_press()
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if pad.name == 'Right':
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if tleft.just_pressed():
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print('Swipe right')
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else:
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print('{} pressed'.format(pad.name))
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elif pad.name == 'Left':
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if tright.just_pressed():
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print('Swipe left')
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else:
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print('{} pressed'.format(pad.name))
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elif pad.name == 'Up':
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if tbott.just_pressed():
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print('Swipe up')
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else:
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print('{} pressed'.format(pad.name))
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elif pad.name == 'Bottom':
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if tupp.just_pressed():
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print('Swipe down')
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else:
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print('{} pressed'.format(pad.name))
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tleft = TouchPad('P4', 'Left')
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tright = TouchPad('P8', 'Right')
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tbott = TouchPad('P9', 'Bottom')
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tupp = TouchPad('P23', 'Up')
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# initialize the touch controller
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touch_controller = TouchController(pads=[tleft, tright, tbott, tupp])
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# enable the alarm to check the status
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Timer.Alarm(touch_controller.check, ms=10, periodic=True)
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``` |