MicroPython • Re: PICO and the NHD-3.12-25664UCW2

Code:

"""outline: https://github.com/mcauser/micropython-ssd1327init sequence/write buffer: https://github.com/JamesHagerman/Jamis_SSD1322other: SSD1322 Advance Information 480 x 128, Dot Matrix High Power OLED/PLED Segment/Common Driver with Controller        (9 COMMAND TABLE)  https://www.newhavendisplay.com/resources_dataFiles/datasheets/OLEDs/SSD1322.pdf"""__version__ = '0.1'import timeimport framebufclass SSD1322:    def __init__(self, width=256, height=64):        self.width = width        self.height = height        self.buffer = bytearray(self.width * self.height //2)        self.framebuf = framebuf.FrameBuffer(self.buffer, self.width, self.height, framebuf.GS4_HMSB)        # self.poweron()        time.sleep_ms(5)        self.init_display()    def init_display(self):        self.write_cmd(0xFD)  # Set Command Lock (MCU protection status)        self.write_data(0x12)  # 0x12 = Unlock Basic Commands; 0x16 = lock        self.write_cmd(0xA4)  # Set Display Mode = OFF        self.write_cmd(0xB3)  # Set Front Clock Divider / Oscillator Frequency        self.write_data(0xD1)  # 0x91 = 80FPS; 0xD0 = default / 1100b         self.write_cmd(0xCA)  # Set MUX Ratio        self.write_data(0x3F)  # 0x3F = 63d = 64MUX (1/64 duty cycle)        self.write_cmd(0xA2)  # Set Display Offset        self.write_data(0x00)  # 0x00 = (default)        self.write_cmd(0xA1)  # Set Display Start Line        self.write_data(0x00)  # 0x00 = register 00h        self.write_cmd(0xA0)  # Set Re-map and Dual COM Line mode        self.write_data(0x14)  # 0x14 = Default except Enable Nibble Re-map, Scan from COM[N-1] to COM0, where N is the Multiplex ratio        self.write_data(0x11)  # 0x11 = Enable Dual COM mode (MUX <= 63)        self.write_cmd(0xB5)  # Set GPIO        self.write_data(0x00)  # 0x00 = {GPIO0, GPIO1 = HiZ (Input Disabled)}        self.write_cmd(0xAB)  # Function Selection        self.write_data(0x01)  # 0x01 = Enable internal VDD regulator (default)        self.write_cmd(0xB4)  # Display Enhancement A        self.write_data(0xA0)  # 0xA0 = Enable external VSL; 0xA2 = internal VSL        self.write_data(0xB5)  # 0xB5 = Normal (default); 0xFD = 11111101b = Enhanced low GS display quality        self.write_cmd(0xC1)  # Set Contrast Current        self.write_data(0x9F)  # 0x7F = (default)        self.write_cmd(0xC7)  # Master Contrast Current Control        self.write_data(0x0F)  # 0x0F = (default)        self.write_cmd(0xB8)  # Select Custom Gray Scale table (GS0 = 0)        self.write_data(0x00)  # GS1        self.write_data(0x02)  # GS2        self.write_data(0x08)  # GS3        self.write_data(0x0d)  # GS4        self.write_data(0x14)  # GS5        self.write_data(0x1a)  # GS6        self.write_data(0x20)  # GS7        self.write_data(0x28)  # GS8        self.write_data(0x30)  # GS9        self.write_data(0x38)  # GS10        self.write_data(0x40)  # GS11        self.write_data(0x48)  # GS12        self.write_data(0x50)  # GS13        self.write_data(0x60)  # GS14        self.write_data(0x70)  # GS15        self.write_data(0x00)  # Enable Custom Gray Scale table        self.write_cmd(0xB1)  # Set Phase Length        self.write_data(0x74)  # 0xE2 = Phase 1 period (reset phase length) = 5 DCLKs,                               # Phase 2 period (first pre-charge phase length) = 14 DCLKs        self.write_cmd(0xD1)  # Display Enhancement B        self.write_data(0xA2)  # 0xA2 = Normal (default); 0x82 = reserved        self.write_data(0x20)  # 0x20 = as-is        self.write_cmd(0xBB)  # Set Pre-charge voltage        self.write_data(0x17)  # 0x17 = default; 0x1F = 0.60*Vcc (spec example)        self.write_cmd(0xB6)  # Set Second Precharge Period        self.write_data(0x08)  # 0x08 = 8 dclks (default)        self.write_cmd(0xBE)  # Set VCOMH        self.write_data(0x07)  # 0x04 = 0.80*Vcc (default); 0x07 = 0.86*Vcc (spec example)        self.write_cmd(0xA6)  # Set Display Mode = Normal Display        self.write_cmd(0xA9)  # Exit Partial Display        self.write_cmd(0xAF)  # Set Sleep mode OFF (Display ON)                self.fill(0)        self.write_data(self.buffer)    def poweroff(self):        self.write_cmd(0xAB)        self.write_data(0x00) # Disable internal VDD regulator, to save power        self.write_cmd(0xAE)    def poweron(self):        self.write_cmd(0xAB)        self.write_data(0x01) # Enable internal VDD regulator        self.write_cmd(0xAF)    def contrast(self, contrast):        self.write_cmd(0x81)        self.write_data(0x81) # 0-255    def rotate(self, rotate):        self.write_cmd(0xA0)        self.write_data(0x06 if rotate else 0x14)        self.write_data(0x11)    def invert(self, invert):        self.write_cmd(0xA4 | (invert & 1) << 1 | (invert & 1)) # 0xA4=Normal, 0xA7=Inverted    def show(self):        offset=(480-self.width)//2        col_start=offset//4        col_end=col_start+self.width//4-1        self.write_cmd(0x15)        self.write_data(col_start)        self.write_data(col_end)        self.write_cmd(0x75)        self.write_data(0)        self.write_data(self.height-1)        self.write_cmd(0x5c)        self.write_data(self.buffer)    def fill(self, col):        self.framebuf.fill(col)    def pixel(self, x, y, col):        self.framebuf.pixel(x, y, col)    def pp(self,x,y,col):        self.buffer[self.width//2*y+x//2]=0xff if col else 0    def line(self, x1, y1, x2, y2, col):        self.framebuf.line(x1, y1, x2, y2, col)    def scroll(self, dx, dy):        self.framebuf.scroll(dx, dy)        # software scroll    def text(self, string, x, y, col=15):        self.framebuf.text(string, x, y, col)    def write_cmd(self):        raise NotImplementedError    def write_data(self):        raise NotImplementedErrorclass SSD1322_SPI(SSD1322):    def __init__(self, width, height, spi, dc,cs,res):        self.spi = spi        self.dc=dc        self.cs=cs        self.res=res        self.res(1)        time.sleep_ms(1)        self.res(0)        time.sleep_ms(10)        self.res(1)        super().__init__(width, height)        time.sleep_ms(5)    def write_cmd( self, aCommand ) :        '''Write given command to the device.'''        self.dc(0)        self.cs(0)        self.spi.write(bytearray([aCommand]))        self.cs(1)    #@micropython.native    def write_data( self, aData ) :        '''Write given data to the device.  This may be           either a single int or a bytearray of values.'''        self.dc(1)        self.cs(0)        if type(aData)==bytes or type(aData)==bytearray:            self.spi.write(aData)        else:            self.spi.write(bytearray([aData]))        self.cs(1)

Code:

from machine import Pin, SPIimport ssd1322import time# Reset the displayres = Pin(28, Pin.OUT)res.low()time.sleep(0.01)  # 10 millisecondsres.high()# SPI setupspi = SPI(0, baudrate=8000000, sck=Pin(18), mosi=Pin(19))dc = Pin(27, Pin.OUT)cs = Pin(17, Pin.OUT)# Initialize the displaydisplay = ssd1322.SSD1322_SPI(256, 64, spi, dc, cs, res)# Clear the displaydisplay.fill(0)display.show()# Write some textdisplay.text('Hello, Pico!', 0, 0, 15)display.show()# Keep the text on screen for 30 secondstime.sleep(30)