95 lines
2.6 KiB
Python

import colorsys
import time
import numpy
try:
import RPi.GPIO as GPIO
except ImportError:
from unittest.mock import Mock
GPIO = Mock()
SETUP_FAIL = True
class ClockOut:
def __init__(self):
self.PIN_CLK = 11
##################################
# Hardcoded vaules:
# GPIO Pins for the actual signal. The other ones are for signal clocks and resets.
self.PINS_DAT = [10, 22]
self.PIN_CS = 8
# for data transmission
self.SOF = 0x72
self.DELAY = 1.0/120
# shape of 2 unicorn hats
self.shape = (16, 32)
##################################
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(self.PIN_CS, GPIO.OUT, initial=GPIO.HIGH)
GPIO.setup(self.PIN_CLK, GPIO.OUT, initial=GPIO.LOW)
GPIO.setup(self.PINS_DAT, GPIO.OUT, initial=GPIO.LOW)
self.HEIGHT = self.shape[0] #16
self.WIDTH = self.shape[1] #32
self.reset_clock()
def reset_clock(self):
GPIO.output(self.PIN_CS, GPIO.LOW)
time.sleep(0.00001)
GPIO.output(self.PIN_CS, GPIO.HIGH)
def spi_write(self, buf1, buf2):
GPIO.output(self.PIN_CS, GPIO.LOW)
self.spi_write_byte(self.SOF, self.SOF)
for x in range(len(buf1)):
b1, b2= buf1[x], buf2[x]
self.spi_write_byte(b1, b2)
GPIO.output(self.PIN_CS, GPIO.HIGH)
def spi_write_byte(self, b1, b2):
for x in range(8):
GPIO.output(self.PINS_DAT[0], b1 & 0b10000000)
GPIO.output(self.PINS_DAT[1], b2 & 0b10000000)
GPIO.output(self.PIN_CLK, GPIO.HIGH)
b1 <<= 1
b2 <<= 1
#time.sleep(0.00000001)
GPIO.output(self.PIN_CLK, GPIO.LOW)
def put(self, matrix):
"""Sets a height x width matrix directly"""
self.reset_clock()
self.show(matrix)
def clear(self):
"""Clear the buffer."""
zero = np.zero((self.HEIGHT, self. WIDTH))
self.put(zero)
def show(self, matrix):
"""Output the contents of the buffer to Unicorn HAT HD."""
##########################################################
## Change to desire
buff2 = numpy.rot90(matrix[:self.HEIGHT,:16],3)
buff1 = numpy.rot90(matrix[:self.HEIGHT,16:32],1)
##########################################################
# separated these are: 16x16x3 arrays
buff1, buff2 = [(x.reshape(768)).astype(numpy.uint8).tolist() for x in (buff1, buff2)]
self.spi_write(buff1, buff2)
time.sleep(self.DELAY)