A MicroPython library for the Philips PCD8544 84x48 monochrome LCD, used by the Nokia 5110 display.
 |
 |
|---|
| Pin | Name | Description |
|---|---|---|
| 1 | RST | External reset input, active low |
| 2 | CE | Chip enable, active low |
| 3 | D/C | Data high / Command low |
| 4 | DIN | Serial data input |
| 5 | CLK | Serial clock, up to 4 Mbits/s |
| 6 | VCC | Supply voltage 2.7-3.3V |
| 7 | BL | Backlight |
| 8 | GND | Ground |
Copy the file to your device, using ampy, webrepl or compiling and deploying. eg.
$ ampy put pcd8544.pyBasic Example
import pcd8544
from machine import Pin, SPI
spi = SPI(1)
spi.init(baudrate=2000000, polarity=0, phase=0)
cs = Pin(2)
dc = Pin(15)
rst = Pin(0)
# backlight on
bl = Pin(12, Pin.OUT, value=1)
lcd = pcd8544.PCD8544(spi, cs, dc, rst)
# test pattern (50% on)
lcd.data(bytearray([0x55, 0xAA] * 42 * 6))
# 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'))
# 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'))
# toggle display, image persists in DDRAM
lcd.power_off()
lcd.power_on()
# nokia logo bitmap
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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\xFF\xFF\xFF\xFF'))
lcd.invert(True)
lcd.invert(False)
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)
lcd.contrast(0x3f, pcd8544.BIAS_1_48, pcd8544.TEMP_COEFF_0)
lcd.contrast(0x3c, pcd8544.BIAS_1_40, pcd8544.TEMP_COEFF_0)
lcd.contrast(0x42, pcd8544.BIAS_1_48, pcd8544.TEMP_COEFF_0)
lcd.contrast(0x3f, pcd8544.BIAS_1_40, pcd8544.TEMP_COEFF_2)See /examples for more.
Each animation frame represents 1 of 504 bytes written to the DDRAM. lcd.data(bytearray(b'\xFF'))
In horizontal mode you can use framebuf with MONO_VLSB format. Vertical mode does not have a compatible framebuf format.
Horizontal
Vertical
See /examples/addressing for more details.
- WeMos D1 Mini $4.00 USD
- Nokia 5110 LCD Display $2.00 USD
| WeMos D1 Mini | PCD8544 LCD |
|---|---|
| D3 (GPIO0) | 1 RST |
| D4 (GPIO2) | 2 CE |
| D8 (GPIO15) | 3 DC |
| D7 (GPIO13) | 4 Din |
| D5 (GPIO14) | 5 Clk |
| 3V3 | 6 Vcc |
| D6 (GPIO12) | 7 BL |
| G | 8 Gnd |
Licensed under the MIT License.