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# This file is part of the MicroPython project, http://micropython.org/
#
# The MIT License (MIT)
#
# Copyright (c) 2016 Glenn Ruben Bakke
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation 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
# furnished 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 FOR 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.
"""
MicroPython Seeedstudio TFT Shield V2 driver, SPI interfaces, Analog GPIO
Contains SD-card reader, LCD and Touch sensor
The pca10040 pin layout is used as reference.
Example usage of LCD:
from seeedstudio_tft_shield_v2 import ILI9341
lcd = ILI9341(240, 320)
lcd.text("Hello World!, 32, 32)
lcd.show()
Example usage of SD card reader:
import os
from seeedstudio_tft_shield_v2 import mount_tf
tf = mount_tf()
os.listdir()
"""
import os
import time
import framebuf
from machine import SPI, Pin
from sdcard import SDCard
def mount_tf(self, mount_point="/"):
sd = SDCard(SPI(0), Pin("P15", mode=Pin.OUT))
os.mount(sd, mount_point)
class ILI9341:
def __init__(self, width, height):
self.width = width
self.height = height
self.pages = self.height // 8
self.buffer = bytearray(self.pages * self.width)
self.framebuf = framebuf.FrameBuffer(
self.buffer, self.width, self.height, framebuf.MONO_VLSB
)
self.spi = SPI(0)
# chip select
self.cs = Pin("P16", mode=Pin.OUT, pull=Pin.PULL_UP)
# command
self.dc = Pin("P17", mode=Pin.OUT, pull=Pin.PULL_UP)
# initialize all pins high
self.cs.high()
self.dc.high()
self.spi.init(baudrate=8000000, phase=0, polarity=0)
self.init_display()
def init_display(self):
time.sleep_ms(500)
self.write_cmd(0x01)
time.sleep_ms(200)
self.write_cmd(0xCF)
self.write_data(bytearray([0x00, 0x8B, 0x30]))
self.write_cmd(0xED)
self.write_data(bytearray([0x67, 0x03, 0x12, 0x81]))
self.write_cmd(0xE8)
self.write_data(bytearray([0x85, 0x10, 0x7A]))
self.write_cmd(0xCB)
self.write_data(bytearray([0x39, 0x2C, 0x00, 0x34, 0x02]))
self.write_cmd(0xF7)
self.write_data(bytearray([0x20]))
self.write_cmd(0xEA)
self.write_data(bytearray([0x00, 0x00]))
# Power control
self.write_cmd(0xC0)
# VRH[5:0]
self.write_data(bytearray([0x1B]))
# Power control
self.write_cmd(0xC1)
# SAP[2:0];BT[3:0]
self.write_data(bytearray([0x10]))
# VCM control
self.write_cmd(0xC5)
self.write_data(bytearray([0x3F, 0x3C]))
# VCM control2
self.write_cmd(0xC7)
self.write_data(bytearray([0xB7]))
# Memory Access Control
self.write_cmd(0x36)
self.write_data(bytearray([0x08]))
self.write_cmd(0x3A)
self.write_data(bytearray([0x55]))
self.write_cmd(0xB1)
self.write_data(bytearray([0x00, 0x1B]))
# Display Function Control
self.write_cmd(0xB6)
self.write_data(bytearray([0x0A, 0xA2]))
# 3Gamma Function Disable
self.write_cmd(0xF2)
self.write_data(bytearray([0x00]))
# Gamma curve selected
self.write_cmd(0x26)
self.write_data(bytearray([0x01]))
# Set Gamma
self.write_cmd(0xE0)
self.write_data(
bytearray(
[
0x0F,
0x2A,
0x28,
0x08,
0x0E,
0x08,
0x54,
0xA9,
0x43,
0x0A,
0x0F,
0x00,
0x00,
0x00,
0x00,
]
)
)
# Set Gamma
self.write_cmd(0xE1)
self.write_data(
bytearray(
[
0x00,
0x15,
0x17,
0x07,
0x11,
0x06,
0x2B,
0x56,
0x3C,
0x05,
0x10,
0x0F,
0x3F,
0x3F,
0x0F,
]
)
)
# Exit Sleep
self.write_cmd(0x11)
time.sleep_ms(120)
# Display on
self.write_cmd(0x29)
time.sleep_ms(500)
self.fill(0)
def show(self):
# set col
self.write_cmd(0x2A)
self.write_data(bytearray([0x00, 0x00]))
self.write_data(bytearray([0x00, 0xEF]))
# set page
self.write_cmd(0x2B)
self.write_data(bytearray([0x00, 0x00]))
self.write_data(bytearray([0x01, 0x3F]))
self.write_cmd(0x2C)
num_of_pixels = self.height * self.width
for row in range(0, self.pages):
for pixel_pos in range(0, 8):
for col in range(0, self.width):
compressed_pixel = self.buffer[row * 240 + col]
if ((compressed_pixel >> pixel_pos) & 0x1) == 0:
self.write_data(bytearray([0x00, 0x00]))
else:
self.write_data(bytearray([0xFF, 0xFF]))
def fill(self, col):
self.framebuf.fill(col)
def pixel(self, x, y, col):
self.framebuf.pixel(x, y, col)
def scroll(self, dx, dy):
self.framebuf.scroll(dx, dy)
def text(self, string, x, y, col=1):
self.framebuf.text(string, x, y, col)
def write_cmd(self, cmd):
self.dc.low()
self.cs.low()
self.spi.write(bytearray([cmd]))
self.cs.high()
def write_data(self, buf):
self.dc.high()
self.cs.low()
self.spi.write(buf)
self.cs.high()
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