125 lines
4.0 KiB
Python
125 lines
4.0 KiB
Python
"""
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SSD1106
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library for the SSD1x06 OLED128x64
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=======================================================
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@dahanzimin From the Mixly Team
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"""
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import uframebuf
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from micropython import const
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SET_CONTRAST = const(0x81)
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SET_ENTIRE_ON = const(0xa4)
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SET_NORM_INV = const(0xa6)
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SET_DISP_OFF = const(0xae)
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SET_DISP_ON = const(0xaf)
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SET_MEM_ADDR = const(0x20)
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SET_PAGE_ADDR = const(0x22)
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SET_DISP_START_LINE = const(0x40)
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SET_SEG_REMAP = const(0xa0)
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SET_MUX_RATIO = const(0xa8)
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SET_COM_OUT_DIR = const(0xc0)
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SET_DISP_OFFSET = const(0xd3)
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SET_COM_PIN_CFG = const(0xda)
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SET_DISP_CLK_DIV = const(0xd5)
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SET_PRECHARGE = const(0xd9)
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SET_VCOM_DESEL = const(0xdb)
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SET_CHARGE_PUMP = const(0x8d)
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SET_COL_ADDR_L = const(0x02)
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SET_COL_ADDR_H = const(0x10)
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SET_PAGE_ADDR1 = const(0xb0)
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SET_CONTRACT_CTRL = const(0x81)
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class SSD1106(uframebuf.FrameBuffer_Uincode):
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def __init__(self, width, height, external_vcc, l_offset=0, h_offset=0):
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self._external = external_vcc
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self._l_offset = l_offset
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self._h_offset = h_offset
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self._buffer = bytearray((width + 7) // 8 * height)
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super().__init__(self._buffer, width, height, uframebuf.MONO_VLSB)
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self.init_display()
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def init_display(self):
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for cmd in (
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SET_DISP_OFF, # display off
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SET_DISP_CLK_DIV, 0x80, # timing and driving scheme
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SET_MUX_RATIO, 0x3f, #0xa8
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SET_DISP_OFFSET, 0x00, #0xd3
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SET_DISP_START_LINE | 0x00, #start line
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SET_CHARGE_PUMP, 0x10 if self._external else 0x14,
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SET_MEM_ADDR, 0x00, # address setting
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SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0
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SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0
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SET_COM_PIN_CFG, 0x12,
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SET_CONTRACT_CTRL, 0xcf,
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SET_PRECHARGE, 0x22 if self._external else 0xf1,
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SET_VCOM_DESEL, 0x40, # 0.83*Vcc
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SET_ENTIRE_ON, # output follows RAM contents
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SET_NORM_INV,
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SET_DISP_ON): # on
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self.write_cmd(cmd)
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self.fill(0)
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self.show()
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def poweroff(self):
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self.write_cmd(SET_DISP_OFF)
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def poweron(self):
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self.write_cmd(SET_DISP_ON)
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def contrast(self, contrast):
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self.write_cmd(SET_CONTRAST)
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self.write_cmd(contrast)
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def invert(self, invert):
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self.write_cmd(SET_NORM_INV | (invert & 1))
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def show(self):
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for i in range(0, 8):
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self.write_cmd(SET_PAGE_ADDR1 + i)
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self.write_cmd(SET_COL_ADDR_L + self._l_offset)
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self.write_cmd(SET_COL_ADDR_H + self._h_offset)
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self.write_data(self._buffer[i * 128:(i + 1) * 128]) #send one page display data
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class SSD1106_I2C(SSD1106):
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def __init__(self, width, height, i2c, addr=0x3c, external_vcc=False, l_offset=0, h_offset=0):
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self.i2c = i2c
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self.addr = addr
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self.temp = bytearray(2)
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super().__init__(width, height, external_vcc, l_offset, h_offset)
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def write_cmd(self, cmd):
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self.temp[0] = 0x80
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self.temp[1] = cmd
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self.i2c.writeto(self.addr, self.temp)
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def write_data(self, buf):
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tmp = bytearray([0x40])
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self.i2c.writeto(self.addr, tmp+buf)
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class SSD1106_SPI(SSD1106):
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def __init__(self, width, height, spi, dc, cs, external_vcc=False, l_offset=0, h_offset=0):
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self.rate = 10 * 1024 * 1024
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dc.init(dc.OUT, value=0)
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cs.init(cs.OUT, value=1)
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self.spi = spi
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self.dc = dc
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self.cs = cs
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super().__init__(width, height, external_vcc, l_offset, h_offset)
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def write_cmd(self, cmd):
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self.spi.init(baudrate=self.rate, polarity=0, phase=0)
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self.cs(1)
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self.dc(0)
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self.cs(0)
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self.spi.write(bytearray([cmd]))
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self.cs(1)
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def write_data(self, buf):
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self.spi.init(baudrate=self.rate, polarity=0, phase=0)
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self.cs(1)
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self.dc(1)
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self.cs(0)
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self.spi.write(buf)
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self.cs(1)
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