adolforeyna/basic1
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

abstracting display, touch and sd

Browse Source
This commit is contained in:
Adolfo Reyna
2026-01-28 20:12:41 -05:00
parent 57426c6e7d
commit adfbef7228
396 changed files with 101836 additions and 272 deletions
Download Patch File Download Diff File Expand all files Collapse all files

207
lib/Pico_ePaper_Code/pythonNanoGui/drivers/ePaper4in2V2.py Normal file
View File

@@ -0,0 +1,207 @@
# pico_epaper_42.py A 1-bit monochrome display driver for the Waveshare Pico
# ePaper 4.2" display.
# Adapted from the Waveshare driver by Peter Hinch Sept 2022.
# *****************************************************************************
# * | File : ePaper4in2.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V1.0
# * | Date : 2022-10-09
# # | Info : python demo
# -----------------------------------------------------------------------------
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
from machine import Pin, SPI
import framebuf
import time
import uasyncio as asyncio
from drivers.boolpalette import BoolPalette
# Display resolution
_EPD_WIDTH = const(400)
_BWIDTH = _EPD_WIDTH // 8
_EPD_HEIGHT = const(300)
RST_PIN = 12
DC_PIN = 8
CS_PIN = 9
BUSY_PIN = 13
EPD_LUT_ALL=b"\x01\x0A\x1B\x0F\x03\x01\x01\x05\x0A\x01\x0A\x01\x01\x01\x05\x08\x03\x02\x04\x01\x01\x01\x04\x04\x02\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\
\x01\x00\x00\x00\x00\x01\x01\x01\x0A\x1B\x0F\x03\x01\x01\x05\x4A\x01\x8A\x01\x01\x01\x05\x48\x03\x82\x84\x01\x01\x01\x84\x84\x82\x00\x01\x01\
\x01\x00\x00\x00\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\x01\x0A\x1B\x8F\x03\x01\x01\x05\x4A\x01\x8A\x01\x01\x01\x05\x48\x83\x82\x04\x01\x01\
\x01\x04\x04\x02\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\x01\x8A\x1B\x8F\x03\x01\x01\
\x05\x4A\x01\x8A\x01\x01\x01\x05\x48\x83\x02\x04\x01\x01\x01\x04\x04\x02\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\
\x01\x00\x00\x00\x00\x01\x01\x01\x8A\x9B\x8F\x03\x01\x01\x05\x4A\x01\x8A\x01\x01\x01\x05\x48\x03\x42\x04\x01\x01\
\x01\x04\x04\x42\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\x01\x00\x00\x00\x00\x01\x01\x00\x00\x00\x00\x00\x00\x00\
\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x07\x17\x41\xA8\x32\x30"
class EPD(framebuf.FrameBuffer):
# A monochrome approach should be used for coding this. The rgb method ensures
# nothing breaks if users specify colors.
@staticmethod
def rgb(r, g, b):
return int((r > 127) or (g > 127) or (b > 127))
def __init__(self, spi=None, cs=None, dc=None, rst=None, busy=None, landscape=None, asyn=False):
self.reset_pin = Pin(RST_PIN, Pin.OUT) if rst is None else rst
self.busy_pin = Pin(BUSY_PIN, Pin.IN, Pin.PULL_UP) if busy is None else busy
self.cs_pin = Pin(CS_PIN, Pin.OUT) if cs is None else cs
self.dc_pin = Pin(DC_PIN, Pin.OUT) if dc is None else dc
self.spi = SPI(1) if spi is None else spi
self.spi.init(baudrate=4_000_000)
self._asyn = asyn
self._as_busy = False # Set immediately on start of task. Cleared when busy pin is logically false (physically 1).
self._updated = asyncio.Event()
self.width = _EPD_WIDTH
self.height = _EPD_HEIGHT
self.buf = bytearray(_EPD_HEIGHT * _BWIDTH)
self.mvb = memoryview(self.buf)
mode = framebuf.MONO_HLSB
self.palette = BoolPalette(mode)
super().__init__(self.buf, _EPD_WIDTH, _EPD_HEIGHT, mode)
self.init()
time.sleep_ms(500)
# Hardware reset
def reset(self):
for v in (1, 0, 1):
self.reset_pin(v)
time.sleep_ms(20)
def send_command(self, command):
self.dc_pin(0)
self.cs_pin(0)
self.spi.write(command)
self.cs_pin(1)
def send_bytes(self, data):
self.dc_pin(1)
self.cs_pin(0)
self.spi.write(data)
self.cs_pin(1)
def display_on(self):
self.send_command(b"\x22")
self.send_bytes(b"\xF7")
self.send_command(b"\x20")
time.sleep_ms(100)
self.wait_until_ready()
def init(self):
self.reset()
self.wait_until_ready()
self.send_command(b"\x12") #SWRESET
self.wait_until_ready()
self.send_command(b"\x21") # Display update control
self.send_bytes(b"\x40")
self.send_bytes(b"\x00")
self.send_command(b"\x3C") # BorderWavefrom
self.send_bytes(b"\x05")
self.send_command(b"\x11") # data entry mode
self.send_bytes(b"\x03") # X-mode
self.send_command(b"\x44")
self.send_bytes(b"\x00")
self.send_bytes(b"\x31")
self.send_command(b"\x45")
self.send_bytes(b"\x00")
self.send_bytes(b"\x00")
self.send_bytes(b"\x2B")
self.send_bytes(b"\x01")
self.send_command(b"\x4E")
self.send_bytes(b"\x00")
self.send_command(b"\x4F")
self.send_bytes(b"\x00")
self.send_bytes(b"\x00")
self.wait_until_ready()
# Clear display
self.send_command(b"\x24")
for j in range(_EPD_HEIGHT):
self.send_bytes(b"\xff" * _BWIDTH)
self.send_command(b"\x26")
for j in range(_EPD_HEIGHT):
self.send_bytes(b"\xff" * _BWIDTH)
self.display_on()
def wait_until_ready(self):
while(self.ready()):
time.sleep_ms(100)
async def wait(self):
await asyncio.sleep_ms(0) # Ensure tasks run that might make it unready
while self.ready():
await asyncio.sleep_ms(100)
# Pause until framebuf has been copied to device.
async def updated(self):
await self._updated.wait()
# For polling in asynchronous code. Just checks pin state.
# 0 == busy. Comment in official code is wrong. Code is correct.
def ready(self):
return not(self._as_busy or (self.busy_pin() == 0)) # 0 == busy
def _line(self, n, buf=bytearray(_BWIDTH)):
img = self.mvb
s = n * _BWIDTH
for x, b in enumerate(img[s : s + _BWIDTH]):
buf[x] = b ^ 0xFF
self.send_bytes(buf)
async def _as_show(self):
self.send_command(b"\x24")
for j in range(_EPD_HEIGHT): # Loop would take ~300ms
self._line(j)
await asyncio.sleep_ms(0)
self.wait_until_ready()
self._updated.set()
self._updated.clear()
self._as_busy = False
def show(self):
if self._asyn:
if self._as_busy:
raise RuntimeError('Cannot refresh: display is busy.')
self._as_busy = True # Immediate busy flag. Pin goes low much later.
asyncio.create_task(self._as_show())
return
self.send_command(b"\x24")
for j in range(_EPD_HEIGHT):
self._line(j)
self.display_on()
self.wait_until_ready()
def sleep(self):
self.send_command(b"\x10") # deep sleep
self.send_bytes(b"\x01")