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Merge pull request #61 from helgibbons/main 

Moar examples!
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Philip Howard 2021-02-16 18:17:00 +00:00 zatwierdzone przez GitHub
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51
micropython/examples/pico_display/buttons.py 100644
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# This example shows you a simple, non-interrupt way of reading Pico Display's buttons with a loop that checks to see if buttons are pressed.
import picodisplay as display
import utime
# Initialise display with a bytearray display buffer
buf = bytearray(display.get_width() * display.get_height() * 2)
display.init(buf)
display.set_backlight(0.5)
# sets up a handy function we can call to clear the screen
def clear():
display.set_pen(0, 0, 0)
display.clear()
display.update()
while True:
if display.is_pressed(display.BUTTON_A): # if a button press is detected then...
clear() # clear to black
display.set_pen(255, 255, 255) # change the pen colour
display.text("Button A pressed", 10, 10, 240, 4) # display some text on the screen
display.update() # update the display
utime.sleep(1) # pause for a sec
clear() # clear to black again
elif display.is_pressed(display.BUTTON_B):
clear()
display.set_pen(0, 255, 255)
display.text("Button B pressed", 10, 10, 240, 4)
display.update()
utime.sleep(1)
clear()
elif display.is_pressed(display.BUTTON_X):
clear()
display.set_pen(255, 0, 255)
display.text("Button X pressed", 10, 10, 240, 4)
display.update()
utime.sleep(1)
clear()
elif display.is_pressed(display.BUTTON_Y):
clear()
display.set_pen(255, 255, 0)
display.text("Button Y pressed", 10, 10, 240, 4)
display.update()
utime.sleep(1)
clear()
else:
display.set_pen(255, 0, 0)
display.text("Press any button!", 10, 10, 240, 4)
display.update()
utime.sleep(0.1) # this number is how frequently the Pico checks for button presses

50
micropython/examples/pico_explorer/buttons.py 100644
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# This example shows you a simple, non-interrupt way of reading Pico Explorer's buttons with a loop that checks to see if buttons are pressed.
import picoexplorer as display
import utime
# Initialise display with a bytearray display buffer
buf = bytearray(display.get_width() * display.get_height() * 2)
display.init(buf)
# sets up a handy function we can call to clear the screen
def clear():
display.set_pen(0, 0, 0)
display.clear()
display.update()
while True:
if display.is_pressed(display.BUTTON_A): # if a button press is detected then...
clear() # clear to black
display.set_pen(255, 255, 255) # change the pen colour
display.text("Button A pressed", 10, 10, 240, 4) # display some text on the screen
display.update() # update the display
utime.sleep(1) # pause for a sec
clear() # clear to black again
elif display.is_pressed(display.BUTTON_B):
clear()
display.set_pen(0, 255, 255)
display.text("Button B pressed", 10, 10, 240, 4)
display.update()
utime.sleep(1)
clear()
elif display.is_pressed(display.BUTTON_X):
clear()
display.set_pen(255, 0, 255)
display.text("Button X pressed", 10, 10, 240, 4)
display.update()
utime.sleep(1)
clear()
elif display.is_pressed(display.BUTTON_Y):
clear()
display.set_pen(255, 255, 0)
display.text("Button Y pressed", 10, 10, 240, 4)
display.update()
utime.sleep(1)
clear()
else:
display.set_pen(255, 0, 0)
display.text("Press any button!", 10, 10, 240, 4)
display.update()
utime.sleep(0.1) # this number is how frequently the Pico checks for button presses

141
micropython/examples/pico_explorer/noise.py 100644
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# This example shows you how you can use Pico Explorer's onboard buzzer as a speaker to play different notes and string them together into a bleepy tune.
# It uses code written by Avram Piltch - check out his Tom's Hardware article! https://www.tomshardware.com/uk/how-to/buzzer-music-raspberry-pi-pico
# You'll need to connect a jumper wire between GPO and AUDIO on the Explorer Base to hear noise.
import utime
import picoexplorer as explorer
# Set up and initialise Pico Explorer
buf = bytearray(explorer.get_width() * explorer.get_height() * 2)
explorer.init(buf)
# tells Pico Explorer which pin you'll be using for noise
explorer.set_audio_pin(0)
# this handy list converts notes into frequencies, which you can use with the explorer.set_tone function
tones = {
"B0": 31,
"C1": 33,
"CS1": 35,
"D1": 37,
"DS1": 39,
"E1": 41,
"F1": 44,
"FS1": 46,
"G1": 49,
"GS1": 52,
"A1": 55,
"AS1": 58,
"B1": 62,
"C2": 65,
"CS2": 69,
"D2": 73,
"DS2": 78,
"E2": 82,
"F2": 87,
"FS2": 93,
"G2": 98,
"GS2": 104,
"A2": 110,
"AS2": 117,
"B2": 123,
"C3": 131,
"CS3": 139,
"D3": 147,
"DS3": 156,
"E3": 165,
"F3": 175,
"FS3": 185,
"G3": 196,
"GS3": 208,
"A3": 220,
"AS3": 233,
"B3": 247,
"C4": 262,
"CS4": 277,
"D4": 294,
"DS4": 311,
"E4": 330,
"F4": 349,
"FS4": 370,
"G4": 392,
"GS4": 415,
"A4": 440,
"AS4": 466,
"B4": 494,
"C5": 523,
"CS5": 554,
"D5": 587,
"DS5": 622,
"E5": 659,
"F5": 698,
"FS5": 740,
"G5": 784,
"GS5": 831,
"A5": 880,
"AS5": 932,
"B5": 988,
"C6": 1047,
"CS6": 1109,
"D6": 1175,
"DS6": 1245,
"E6": 1319,
"F6": 1397,
"FS6": 1480,
"G6": 1568,
"GS6": 1661,
"A6": 1760,
"AS6": 1865,
"B6": 1976,
"C7": 2093,
"CS7": 2217,
"D7": 2349,
"DS7": 2489,
"E7": 2637,
"F7": 2794,
"FS7": 2960,
"G7": 3136,
"GS7": 3322,
"A7": 3520,
"AS7": 3729,
"B7": 3951,
"C8": 4186,
"CS8": 4435,
"D8": 4699,
"DS8": 4978
}
# put the notes for your song in here!
song = ["F6","F6","E6","F6","F5","P","F5","P","C6","AS5","A5","C6","F6","P","F6","P","G6","FS6","G6","G5","P","G5","P","G6","F6","E6","D6","C6","P","C6","P","D6","E6","F6","E6","D6","C6","D6","C6","AS5","A5","AS5","A5","G5","F5","G5","F5","E5","D5","C5","D5","E5","F5","G5","AS5","A5","G5","A5","F5","P","F5"]
def clear(): # this function clears Pico Explorer's screen to black
explorer.set_pen(0,0,0)
explorer.clear()
explorer.update()
def playtone(frequency): # this function tells your program how to make noise
explorer.set_tone(frequency)
def bequiet(): # this function tells your program how not to make noise
explorer.set_tone(-1)
def playsong(song): # this function plays your song
a = 0 # this variable keeps track of the visualiser bars
for i in range(len(song)):
if (song[i] == "P"):
bequiet()
else:
playtone(tones[song[i]])
explorer.set_pen(0, 255, 0) # switch to green pen
explorer.rectangle(a, 240 - (int((tones[song[i]])/21)), 5, 240) # draw a green bar corresponding to the frequency of the note
a += 7
if a >= 240: # clears the screen if the green bars reach the right hand edge
clear()
a = 0
explorer.update()
utime.sleep(0.15) # change this number if you want to alter how long the notes play for
bequiet()
clear()
playsong(song)
clear()

2
micropython/modules/pico_display/README.md
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@ -4,6 +4,8 @@ Pico Display Pack is a vibrant 1.14", 240 x 135 pixel IPS LCD screen for your Ra
We've included helper functions to handle every aspect of drawing to the screen and interfacing with the buttons and LED. See the [function reference](#function-reference) for details.
Check out [UnfinishedStuff's excellent Display Pack guide](https://github.com/UnfinishedStuff/Pimoroni_Pico_Display_Pack_documentation) for more detail on the functions and code examples, and [tonygo2's Display Pack Workout](https://www.instructables.com/Pimoroni-Pico-Display-Workout/) for a comprehensive demo!
- [Example Program](#example-program)
- [Function Reference](#function-reference)
- [init](#init)