gc9ao1_cirque_pico.py

# gc9a01_test.py -- fakey lissajous in Micropython
# 21 Oct 2023 - @todbot / Tod Kurt
# Uses Micropython UF2 from https://github.com/russhughes/gc9a01_mpy
# but it seems pretty unstable, wiping out the entire flash contents
# and requiring a reinstall of Micropython.
# And the font mpy files provided do not work with the provided UF2.
#
# Cirque 40mm touchpad code added. -Ticktok
# Requires Adafruit Blinka library to use circuitpython libraries with micropython
#   https://learn.adafruit.com/circuitpython-libraries-on-micropython-using-the-raspberry-pi-pico/installing-blinka-and-libraries
# Requires Cirque touchpad circuitpython library.
#   https://github.com/2bndy5/CircuitPython_Cirque_Pinnacle

#micropython libraries for gc9ao1
import random, math, time
from machine import Pin, SPI
import gc9a01
#import vga1_bold_16x32 as font #Need to find a non .mpy version as micropython doesn't support mpy libraries.

#circuitpython libraries for trackpad
import board
import busio
from digitalio import DigitalInOut
import circuitpython_cirque_pinnacle.glidepoint as Pinnacle



def mapRange(value, inMin, inMax, outMin, outMax):
    return int(outMin + (((value - inMin) / (inMax - inMin)) * (outMax - outMin)))

def draw_dot(tft, x,y,c):
    tft.pixel( x,y, c )
    tft.pixel( x+1, y-1, c )
    tft.pixel( x+1, y+1, c )
    tft.pixel( x-1, y+0, c )
    tft.pixel( x+1, y-1, c )

def main():
    dr_pin = DigitalInOut(board.GP11)
    ss_pin = DigitalInOut(board.GP13)
    sck_pin = board.GP14
    mosi_pin = board.GP15
    miso_pin = board.GP12

    cirque_spi = busio.SPI(clock=sck_pin, MISO=miso_pin, MOSI=mosi_pin)
    tpad = Pinnacle.PinnacleTouchSPI(cirque_spi, ss_pin, dr_pin=dr_pin)

    tpad.data_mode = Pinnacle.ABSOLUTE

    spi = SPI(1, baudrate=60_000_000, sck=Pin(14), mosi=Pin(15))
    tft = gc9a01.GC9A01(
        spi,
        240,
        240,
        reset=Pin(8, Pin.OUT),
        cs=Pin(9, Pin.OUT),
        dc=Pin(10, Pin.OUT),
        rotation=1) # 2 == 180 degrees, because of course it does

    tft.init()

    x,y = 0,0
    r = 60
    phi = 0
    tft.fill(0)

    num_trails = 10
    trails = []

    while True:

        data = tpad.report()

        # erase oldest trail element
        if len(trails) > num_trails:
            #print("hit num_trails:", x,y)
            xe,ye = trails.pop(0)  # remove oldest element
            #tft.text( font, "!", xe,ye, gc9a01.color565( 0,0,0), gc9a01.color565(0,0,0) )
            tft.pixel( xe,ye, gc9a01.color565( 0,0,0) )

        # draw trail
        for (xt,yt) in trails:
            #print(x,y)
            #tft.text( font, "!", xt,yt, gc9a01.color565( 100,100,0), gc9a01.color565(0,0,0) )
            tft.pixel( xt,yt, gc9a01.color565( 100,100,0) )

        if data is None:
            # get new position
            phi += 0.05
            x = 120 + int(r * math.sin( phi ))
            y = 120 + int(r * math.cos( phi ))
        else:
            x = mapRange(data[1],0,1900,0,255)
            y = mapRange(data[2],0,1900,0,255)

        print(f"x:{x} y:{y}")

        trails.append( (x,y) )

        #tft.text( font, ".", x,y, gc9a01.color565( 10,255,10), gc9a01.color565(0,0,0) )
        tft.pixel( x,y, gc9a01.color565( 0,255,0) )

        time.sleep(0.01)


main()