import pcd8544
from machine import Pin, SPI
import sys
from utime import sleep

"""
Philips PCD8544 / Nokia 5110 LCD pinout according to backside description and
this video tutorial https://educ8s.tv/raspberry-pi-pico-nokia5110-display-tutorial-using-circuitpython/,
https://github.com/educ8s/CircuitPython_PCD8544_Graphics
sadly, this is for CircuitPython and AdaFruit ecosystem

Library used: https://github.com/mcauser/micropython-pcd8544

This code is based on example.

|  Pin | Name | Note                             | Pico Pin             |
| ---: | ---- | -------------------------------- | -------------------- |
|    1 | RST  | External reset input, active low | 11: GP8              |
|    2 | CE   | Chip enable, active low          | 7 : GP5              |
|    3 | D/C  | Data high / Command low          | 6 : GP4              |
|    4 | DIN  | Serial data input                | 10: GP7 SPI:MOSI/TX  |
|    5 | CLK  | Serial clock, up to 4MHz         | 9 : GP6 SPI:SCK      |
|    6 | VCC  | Supply voltage 2.7-3.3V          | 36: 3V3              |
|    7 | BL   | Backlight, active low            | 12: GP9              |
|    8 | GND  | Ground                           | 38: GND              |
"""

spi = SPI(0, baudrate=1000000, mosi=Pin(7), sck=Pin(6))
cs  = Pin(5)
dc  = Pin(4)
rst = Pin(8)

# set bl on/off
back_light = Pin(9, Pin.OUT, value=1)

lcd = pcd8544.PCD8544(spi, cs, dc, rst)

# test pattern (50% on)
lcd.data(bytearray([0x55, 0xAA] * 42 * 6))
sleep(1)

# bitmap smiley (horzontal msb)
lcd.clear()
# draw 8x16 in bank 0 (rows 0..7)
lcd.position(0, 0)
lcd.data(bytearray(b'\xE0\x38\xE4\x22\xA2\xE1\xE1\x61\xE1\x21\xA2\xE2\xE4\x38\xE0\x00'))

sleep(1)
# draw 8x16 in bank 1 (rows 8..15)
lcd.position(0, 1)
lcd.data(bytearray(b'\x03\x0C\x10\x21\x21\x41\x48\x48\x48\x49\x25\x21\x10\x0C\x03\x00'))
sleep(1)

# toggle display, image persists in DDRAM
lcd.power_off()
lcd.power_on()
sleep(1)

# nokia logo bitmap (84x48/8=504 bytes)
lcd.clear()
lcd.data(bytearray( \
    b'\x80\x00\x00\x80\x00\x00\x80\x00\x00\x80\x00\x00\x80\x00\x00\x80\x00\x00\x80\x80\x40\x40\x40\x80\x80' \
    b'\xC0\xC0\x40\xC0\xA0\xE0\xC0\xE0\xE0\xF0\xF0\xF8\xF8\xF8\xFC\xFC\xFE\xEE\xF4\xF0\xF0\x70\x30\x00\x80' \
    b'\x00\x00\x80\x00\x0C\x9C\x1C\x38\xB8\x38\x38\xB8\xF8\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0\xF0' \
    b'\xF0\xF0\xF0\xF0\xF0\xF8\xF8\xF8\xF8\x88\x20\x8A\x20\x08\x22\x08\x00\x0A\x00\x00\x02\x80\x71\xBA\xDA' \
    b'\xFD\xDD\xED\xDE\xEE\xF7\xFF\xFB\xFD\xFD\xFE\xFF\x7F\x3F\x1F\x9F\x3F\x7F\x6F\x0F\xAF\x1F\xBF\x3E\x3C' \
    b'\x7A\x78\x70\x22\x88\xA0\x2A\x80\x08\x62\xE0\xE0\xF2\xF0\x58\xDA\xF8\xFC\x92\xFE\xFF\xFF\xD3\xFF\xFD' \
    b'\xF3\xE1\xF0\xF9\x7F\xBF\x3F\x8F\x2F\x4F\xAF\x0F\x4F\xA7\x0F\xAF\x87\x2F\x82\x80\x20\xC0\x80\x80\x50' \
    b'\x40\xC4\xD0\xA0\xE8\xE4\xEA\xFF\xFB\xFD\xFF\xFF\xFF\xFF\xFF\xEF\x4F\x27\x53\xA8\x54\x29\x4A\xB5\x82' \
    b'\xAC\xA1\x8A\xB6\x50\x4D\x32\xA4\x4A\xB4\xA9\x4A\x52\xB4\xAA\x45\xA8\xDA\x22\xAC\xD2\x2A\x52\xA8\x52' \
    b'\x4C\xB0\xAD\x43\x5B\xB3\x45\xA8\x5B\xA3\xAB\x55\xA8\x52\x54\xA9\x56\xA8\x45\xBA\xA4\x49\x5A\xA2\x54' \
    b'\xAA\x52\xFE\xFF\xFF\xFE\xFD\xFF\xFF\xFF\xFE\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x7F\xFF' \
    b'\xFE\xBF\x7F\xBF\xBF\xFF\xDF\xBF\x5F\xDF\x7F\xDF\x7F\xDF\xAF\x7F\xEE\x8E\xF1\x6E\x99\xF7\x6A\xDD\xB2' \
    b'\x6E\xD5\x7A\xD7\xAC\x75\xDB\x6D\xD5\x7A\xD7\xAC\x7B\xE5\xDE\xA9\x77\xDA\xB5\xEE\x59\xB6\xEB\xDD\xB6' \
    b'\x69\xD6\xBF\xE8\x55\xEF\xB9\xD6\xED\xB5\x5B\xAB\xFF\xFD\xF7\xFF\x01\x01\x01\x01\xE1\xC1\x81\x03\x05' \
    b'\x0F\x1D\x2F\x7E\x01\x00\x01\x01\xFF\xFE\x03\x01\x01\x00\xF1\xF0\xF1\x71\xF1\xF1\xB1\xF1\x01\x01\x01' \
    b'\x03\xFE\xFF\x01\x01\x01\x01\xBE\x1B\x0D\x07\x03\x41\xE1\xF1\xF9\x6D\xFF\xFF\x00\x01\x01\x01\xFF\xFF' \
    b'\xEB\x3E\x0D\x03\x01\x41\x71\x70\x41\x01\x03\x0E\x3B\xEF\xFE\xFB\xEE\x7D\xF7\xFF\xFF\xFF\xFF\xFE\xFF' \
    b'\xF0\xF0\xF0\xF0\xFF\xFF\xFF\xFF\xFE\xFC\xF8\xF0\xF0\xF0\xF0\xF0\xF0\xFF\xFF\xF8\xF0\xF0\xF0\xF1\xF1' \
    b'\xF1\xF1\xF1\xF1\xF1\xF1\xF0\xF0\xF0\xF8\xFF\xFF\xF0\xF0\xF0\xF0\xFF\xFF\xFE\xFC\xF8\xF0\xF0\xF1\xF3' \
    b'\xF7\xFF\xFF\xF0\xF0\xF0\xF0\xFF\xF3\xF0\xF0\xF0\xFC\xFC\xFC\xFC\xFC\xFC\xFC\xFC\xF0\xF0\xF0\xF3\xFF' \
    b'\xFF\xFF\xFF\xFF'))
sleep(1)

lcd.invert(True)
sleep(1)
lcd.invert(False)
sleep(1)

#lcd.reset()
#lcd.init()

# swtich to vertical addressing
#lcd.init(horizontal=False)

# adjust contrast, bias and temp
lcd.contrast(0x1f, pcd8544.BIAS_1_40, pcd8544.TEMP_COEFF_0)
sleep(1)
lcd.contrast(0x3f, pcd8544.BIAS_1_48, pcd8544.TEMP_COEFF_0)
sleep(1)
lcd.contrast(0x3c, pcd8544.BIAS_1_40, pcd8544.TEMP_COEFF_0)
sleep(1)
lcd.contrast(0x42, pcd8544.BIAS_1_48, pcd8544.TEMP_COEFF_0)
sleep(1)
lcd.contrast(0x3f, pcd8544.BIAS_1_40, pcd8544.TEMP_COEFF_2)
sleep(1)
print("Done")