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micropython sh1107 driver (m5stick)
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import framebuf | |
''' | |
from machine import Pin, SPI | |
vspi = SPI(2, baudrate=1000000, polarity=0, phase=0, bits=8, firstbit=SPI.MSB, sck=Pin(18), mosi=Pin(23)) | |
import sh1107 | |
oled = sh1107.SH1107(64, 128, vspi, Pin(27), Pin(33), Pin(14)) | |
oled.text('hello', 0, 0, 1) | |
oled.show() | |
''' | |
class SH1107(framebuf.FrameBuffer): | |
def __init__(self, width, height, spi, dc, res, cs, external_vcc=False): | |
self.rate = 2000000 | |
dc.init(dc.OUT, value=0) | |
res.init(res.OUT, value=0) | |
cs.init(cs.OUT, value=1) | |
self.spi = spi | |
self.dc = dc | |
self.res = res | |
self.cs = cs | |
import time | |
self.res(1) | |
time.sleep_ms(100) | |
self.res(0) | |
time.sleep_ms(100) | |
self.res(1) | |
self.width = width | |
self.height = height | |
self.external_vcc = external_vcc | |
self.pages = self.height // 8 | |
self.buffer = bytearray(self.pages * self.width) | |
super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB) | |
self.init_display() | |
def init_display(self): | |
print('init display') | |
self.write_cmd([ | |
0xae, | |
0xdc, 0x00, | |
0x81, 0x2f, | |
0x20, | |
0xa0, | |
0xc0, | |
0xa8, 0x7f, | |
0xd3, 0x60, | |
0xd5, 0x51, | |
0xd9, 0x22, | |
0xdb, 0x35, | |
0xb0, | |
0xda, 0x12, | |
0xa4, | |
0xa6, | |
]) | |
self.fill(0) | |
self.show() | |
self.poweron() | |
def show(self): | |
self.spi.init(baudrate=self.rate, polarity=0, phase=0) | |
self.cs(1) | |
self.cs(0) | |
for page in range(self.pages): | |
buffer_i = page*64 | |
self.dc(0) | |
self.spi.write(bytearray([0x10, 0x00, 0xb0 | page])) | |
self.dc(1) | |
self.spi.write(self.buffer[buffer_i:buffer_i+64]) | |
self.cs(1) | |
def poweroff(self): | |
self.write_cmd([0xae]) | |
def poweron(self): | |
self.write_cmd([0xaf]) | |
def contrast(self, contrast): | |
self.write_cmd([0x81, contrast]) | |
def invert(self, invert): | |
self.write_cmd([0xa6 | (invert & 1)]) | |
def write_cmd(self, cmd): | |
self.spi.init(baudrate=self.rate, polarity=0, phase=0) | |
self.cs(1) | |
self.dc(0) | |
self.cs(0) | |
self.spi.write(bytearray(cmd)) | |
self.cs(1) |
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