"""
lines.py
  Draws lines and rectangles in random colors at random locations on the display.
"""
import random
from machine import Pin, SoftSPI ,SPI
import st7789py as st7789
import gfx
from time import sleep
import sys

if(sys.platform=="esp32"):
  disp_sck  = 18 # default SCK of SPI(1)
  disp_mosi = 23 # default MOSI of SPI(1)
  disp_miso = 19  # not use
  disp_res = 4
  disp_dc  = 2
  disp_cs  = 5
  disp_blk = 22

  # 初始化 SPI
  disp_spi = SPI(1, baudrate=20000000, sck=Pin(disp_sck), mosi=Pin(disp_mosi), miso=Pin(disp_miso))

elif(sys.platform=="rp2"):
  # SCK 2
  # MOSI 3
  # MISO NC
  # LED NC
  # BACKLIGHT NC
  disp_sck  = 6 # default SCK of SPI(0)
  disp_mosi = 7 # default MOSI of SPI(0)
  disp_miso = 4  # not use
  disp_res = 2
  disp_dc  = 1
  disp_cs  = 5
  disp_blk = 3

  # 初始化 SPI
  disp_spi = SPI(0, baudrate=2000000, polarity=0, phase=0, sck=Pin(disp_sck), mosi=Pin(disp_mosi),miso=Pin(disp_miso))

WIDTH = 320
HEIGHT = 240

# Start Function
if __name__=="__main__":
    screen_width=320
    screen_height=240

    # spi = SoftSPI(
    spi = SPI(0,
        baudrate=20000000,
        polarity=1,
        phase=0,
        sck=Pin(disp_sck),
        mosi=Pin(disp_mosi),
        miso=Pin(disp_miso))

    tft = st7789.ST7789(
        spi,
        WIDTH,
        HEIGHT,
        reset=Pin(disp_res, Pin.OUT),
        cs=Pin(disp_cs, Pin.OUT),
        dc=Pin(disp_dc, Pin.OUT),
        backlight=Pin(disp_blk, Pin.OUT),
        rotation=0)

    #tft.fill(st7789.RED)
    tft.rect(40, 10, 120, 100, st7789.WHITE)
    sleep(0.1) # 0.1 sec = 100 ms
    scale = -5
    tft.fill_rect(40+scale, 10+scale, 120+scale, 100+scale, st7789.RED)
    sleep(0.1) # 0.1 sec = 100 ms

    #graphics = gfx.GFX(screen_width, screen_height, tft.pixel)
    #graphics.line(0, 0, 127, 20, 1)
    #tft.show()
    sleep(0.1) # 0.1 sec = 100 ms