def719e7a7
There were several different spellings of MicroPython present in comments,
when there should be only one.
Aligning to upstream commit 55f33240f3.
211 lines
6.1 KiB
Python
211 lines
6.1 KiB
Python
# This file is part of the MicroPython project, http://micropython.org/
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#
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# The MIT License (MIT)
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#
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# Copyright (c) 2016 Glenn Ruben Bakke
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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"""
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MicroPython Seeedstudio TFT Shield V2 driver, SPI interfaces, Analog GPIO
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Contains SD-card reader, LCD and Touch sensor
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The pca10040 pin layout is used as reference.
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Example usage of LCD:
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from seeedstudio_tft_shield_v2 import ILI9341
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lcd = ILI9341(240, 320)
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lcd.text("Hello World!, 32, 32)
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lcd.show()
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Example usage of SD card reader:
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import os
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from seeedstudio_tft_shield_v2 import mount_tf
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tf = mount_tf()
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os.listdir()
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"""
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import os
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import time
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import framebuf
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from machine import SPI, Pin
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from sdcard import SDCard
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def mount_tf(self, mount_point="/"):
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sd = SDCard(SPI(0), Pin("A15", mode=Pin.OUT))
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os.mount(sd, mount_point)
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class ILI9341:
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def __init__(self, width, height):
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self.width = width
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self.height = height
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self.pages = self.height // 8
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self.buffer = bytearray(self.pages * self.width)
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self.framebuf = framebuf.FrameBuffer(self.buffer, self.width, self.height, framebuf.MONO_VLSB)
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self.spi = SPI(0)
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# chip select
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self.cs = Pin("A16", mode=Pin.OUT, pull=Pin.PULL_UP)
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# command
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self.dc = Pin("A17", mode=Pin.OUT, pull=Pin.PULL_UP)
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# initialize all pins high
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self.cs.high()
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self.dc.high()
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self.spi.init(baudrate=8000000, phase=0, polarity=0)
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self.init_display()
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def init_display(self):
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time.sleep_ms(500)
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self.write_cmd(0x01)
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time.sleep_ms(200)
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self.write_cmd(0xCF)
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self.write_data(bytearray([0x00, 0x8B, 0x30]))
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self.write_cmd(0xED)
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self.write_data(bytearray([0x67, 0x03, 0x12, 0x81]))
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self.write_cmd(0xE8)
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self.write_data(bytearray([0x85, 0x10, 0x7A]))
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self.write_cmd(0xCB)
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self.write_data(bytearray([0x39, 0x2C, 0x00, 0x34, 0x02]))
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self.write_cmd(0xF7)
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self.write_data(bytearray([0x20]))
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self.write_cmd(0xEA)
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self.write_data(bytearray([0x00, 0x00]))
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# Power control
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self.write_cmd(0xC0)
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# VRH[5:0]
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self.write_data(bytearray([0x1B]))
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# Power control
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self.write_cmd(0xC1)
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# SAP[2:0];BT[3:0]
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self.write_data(bytearray([0x10]))
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# VCM control
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self.write_cmd(0xC5)
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self.write_data(bytearray([0x3F, 0x3C]))
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# VCM control2
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self.write_cmd(0xC7)
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self.write_data(bytearray([0xB7]))
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# Memory Access Control
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self.write_cmd(0x36)
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self.write_data(bytearray([0x08]))
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self.write_cmd(0x3A)
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self.write_data(bytearray([0x55]))
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self.write_cmd(0xB1)
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self.write_data(bytearray([0x00, 0x1B]))
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# Display Function Control
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self.write_cmd(0xB6)
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self.write_data(bytearray([0x0A, 0xA2]))
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# 3Gamma Function Disable
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self.write_cmd(0xF2)
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self.write_data(bytearray([0x00]))
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# Gamma curve selected
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self.write_cmd(0x26)
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self.write_data(bytearray([0x01]))
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# Set Gamma
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self.write_cmd(0xE0)
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self.write_data(bytearray([0x0F, 0x2A, 0x28, 0x08, 0x0E, 0x08, 0x54, 0XA9, 0x43, 0x0A, 0x0F, 0x00, 0x00, 0x00, 0x00]))
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# Set Gamma
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self.write_cmd(0XE1)
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self.write_data(bytearray([0x00, 0x15, 0x17, 0x07, 0x11, 0x06, 0x2B, 0x56, 0x3C, 0x05, 0x10, 0x0F, 0x3F, 0x3F, 0x0F]))
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# Exit Sleep
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self.write_cmd(0x11)
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time.sleep_ms(120)
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# Display on
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self.write_cmd(0x29)
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time.sleep_ms(500)
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self.fill(0)
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def show(self):
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# set col
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self.write_cmd(0x2A)
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self.write_data(bytearray([0x00, 0x00]))
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self.write_data(bytearray([0x00, 0xef]))
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# set page
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self.write_cmd(0x2B)
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self.write_data(bytearray([0x00, 0x00]))
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self.write_data(bytearray([0x01, 0x3f]))
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self.write_cmd(0x2c);
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num_of_pixels = self.height * self.width
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for row in range(0, self.pages):
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for pixel_pos in range(0, 8):
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for col in range(0, self.width):
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compressed_pixel = self.buffer[row * 240 + col]
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if ((compressed_pixel >> pixel_pos) & 0x1) == 0:
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self.write_data(bytearray([0x00, 0x00]))
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else:
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self.write_data(bytearray([0xFF, 0xFF]))
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def fill(self, col):
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self.framebuf.fill(col)
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def pixel(self, x, y, col):
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self.framebuf.pixel(x, y, col)
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def scroll(self, dx, dy):
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self.framebuf.scroll(dx, dy)
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def text(self, string, x, y, col=1):
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self.framebuf.text(string, x, y, col)
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def write_cmd(self, cmd):
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self.dc.low()
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self.cs.low()
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self.spi.write(bytearray([cmd]))
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self.cs.high()
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def write_data(self, buf):
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self.dc.high()
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self.cs.low()
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self.spi.write(buf)
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self.cs.high()
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