Created
February 13, 2021 17:44
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pimoroni rgb keypad for circuitpython - wip
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mport board | |
import digitalio | |
import busio | |
import random | |
import time | |
class RGBKeyPad: | |
WIDTH=4 | |
HEIGHT=4 | |
NUMPADS=WIDTH*HEIGHT | |
CS_PIN=board.GP17 | |
SCK_PIN=board.GP18 | |
MOSI_PIN=board.GP19 | |
BUFFERSIZE=4+NUMPADS*4 | |
def __init__(self): | |
self.cs=digitalio.DigitalInOut(self.CS_PIN) | |
self.cs.direction=digitalio.Direction.OUTPUT | |
self.cs.value=True | |
self.spi=busio.SPI(self.SCK_PIN,MOSI=self.MOSI_PIN) | |
self.buffer=bytearray(self.BUFFERSIZE) | |
self.set_brightness(0.1) | |
self.update() | |
def update(self): | |
self.cs.value=False | |
self.spi.try_lock() | |
self.spi.write(self.buffer) | |
print(self.buffer) | |
self.spi.unlock() | |
def set_brightness(self,b): | |
if b<0.0 or b>1.0: | |
return | |
binval=0b1110000 | int(b*0b11111) | |
for i in range(self.NUMPADS): | |
self.buffer[4+i*4] = binval | |
def illuminate(self,x,y,r,g,b): | |
if x < 0 or x >= self.WIDTH or y < 0 or y >= self.HEIGHT: | |
return | |
offset = 4 + ((x + (y * self.WIDTH)) * 4) | |
self.buffer[offset + 1] = b | |
self.buffer[offset + 2] = g | |
self.buffer[offset + 3] = r | |
def illuminate_pad(self,i,r,g,b): | |
offset = 4 + (i * 4) | |
self.buffer[offset + 1] = b | |
self.buffer[offset + 2] = g | |
self.buffer[offset + 3] = r | |
def clear(self): | |
for i in range(self.NUMPADS): | |
self.illuminate_pad(i,0,0,0) | |
rgb=RGBKeyPad() | |
t=0.1 | |
ti=0.1 | |
while True: | |
rgb.clear() | |
rgb.update() | |
time.sleep(0.1) | |
for m in range(0,4): | |
for n in range(0,4): | |
rgb.illuminate(n,m,random.randint(128,255),random.randint(128,255),random.randint(128,255)) | |
rgb.set_brightness(t) | |
t=t+ti | |
if t<0.1 or t>0.9: | |
ti=-ti | |
rgb.update() | |
time.sleep(1) | |
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