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grove_display.py
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grove_display.py
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from grove.i2c import Bus
_COMMAND_MODE = 0x80
_DATA_MODE = 0x40
_NORMAL_DISPLAY = 0xA6
_DISPLAY_OFF = 0xAE
_DISPLAY_ON = 0xAF
_INVERSE_DISPLAY = 0xA7
_SET_BRIGHTNESS = 0x81
BasicFont = [[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x07, 0x00, 0x07, 0x00, 0x00, 0x00],
[0x00, 0x14, 0x7F, 0x14, 0x7F, 0x14, 0x00, 0x00],
[0x00, 0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x00, 0x00],
[0x00, 0x23, 0x13, 0x08, 0x64, 0x62, 0x00, 0x00],
[0x00, 0x36, 0x49, 0x55, 0x22, 0x50, 0x00, 0x00],
[0x00, 0x00, 0x05, 0x03, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x1C, 0x22, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x41, 0x22, 0x1C, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x08, 0x2A, 0x1C, 0x2A, 0x08, 0x00, 0x00],
[0x00, 0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x00],
[0x00, 0xA0, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00],
[0x00, 0x60, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00, 0x00],
[0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00, 0x00],
[0x00, 0x00, 0x42, 0x7F, 0x40, 0x00, 0x00, 0x00],
[0x00, 0x62, 0x51, 0x49, 0x49, 0x46, 0x00, 0x00],
[0x00, 0x22, 0x41, 0x49, 0x49, 0x36, 0x00, 0x00],
[0x00, 0x18, 0x14, 0x12, 0x7F, 0x10, 0x00, 0x00],
[0x00, 0x27, 0x45, 0x45, 0x45, 0x39, 0x00, 0x00],
[0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30, 0x00, 0x00],
[0x00, 0x01, 0x71, 0x09, 0x05, 0x03, 0x00, 0x00],
[0x00, 0x36, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00],
[0x00, 0x06, 0x49, 0x49, 0x29, 0x1E, 0x00, 0x00],
[0x00, 0x00, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0xAC, 0x6C, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00, 0x00],
[0x00, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x00],
[0x00, 0x41, 0x22, 0x14, 0x08, 0x00, 0x00, 0x00],
[0x00, 0x02, 0x01, 0x51, 0x09, 0x06, 0x00, 0x00],
[0x00, 0x32, 0x49, 0x79, 0x41, 0x3E, 0x00, 0x00],
[0x00, 0x7E, 0x09, 0x09, 0x09, 0x7E, 0x00, 0x00],
[0x00, 0x7F, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x41, 0x41, 0x22, 0x00, 0x00],
[0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C, 0x00, 0x00],
[0x00, 0x7F, 0x49, 0x49, 0x49, 0x41, 0x00, 0x00],
[0x00, 0x7F, 0x09, 0x09, 0x09, 0x01, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x41, 0x51, 0x72, 0x00, 0x00],
[0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00, 0x00],
[0x00, 0x41, 0x7F, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x20, 0x40, 0x41, 0x3F, 0x01, 0x00, 0x00],
[0x00, 0x7F, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00],
[0x00, 0x7F, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00],
[0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F, 0x00, 0x00],
[0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00],
[0x00, 0x7F, 0x09, 0x09, 0x09, 0x06, 0x00, 0x00],
[0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E, 0x00, 0x00],
[0x00, 0x7F, 0x09, 0x19, 0x29, 0x46, 0x00, 0x00],
[0x00, 0x26, 0x49, 0x49, 0x49, 0x32, 0x00, 0x00],
[0x00, 0x01, 0x01, 0x7F, 0x01, 0x01, 0x00, 0x00],
[0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00, 0x00],
[0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F, 0x00, 0x00],
[0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F, 0x00, 0x00],
[0x00, 0x63, 0x14, 0x08, 0x14, 0x63, 0x00, 0x00],
[0x00, 0x03, 0x04, 0x78, 0x04, 0x03, 0x00, 0x00],
[0x00, 0x61, 0x51, 0x49, 0x45, 0x43, 0x00, 0x00],
[0x00, 0x7F, 0x41, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x00],
[0x00, 0x41, 0x41, 0x7F, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x04, 0x02, 0x01, 0x02, 0x04, 0x00, 0x00],
[0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00],
[0x00, 0x01, 0x02, 0x04, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x20, 0x54, 0x54, 0x54, 0x78, 0x00, 0x00],
[0x00, 0x7F, 0x48, 0x44, 0x44, 0x38, 0x00, 0x00],
[0x00, 0x38, 0x44, 0x44, 0x28, 0x00, 0x00, 0x00],
[0x00, 0x38, 0x44, 0x44, 0x48, 0x7F, 0x00, 0x00],
[0x00, 0x38, 0x54, 0x54, 0x54, 0x18, 0x00, 0x00],
[0x00, 0x08, 0x7E, 0x09, 0x02, 0x00, 0x00, 0x00],
[0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C, 0x00, 0x00],
[0x00, 0x7F, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00],
[0x00, 0x00, 0x7D, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x80, 0x84, 0x7D, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x7F, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00],
[0x00, 0x41, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x7C, 0x04, 0x18, 0x04, 0x78, 0x00, 0x00],
[0x00, 0x7C, 0x08, 0x04, 0x7C, 0x00, 0x00, 0x00],
[0x00, 0x38, 0x44, 0x44, 0x38, 0x00, 0x00, 0x00],
[0x00, 0xFC, 0x24, 0x24, 0x18, 0x00, 0x00, 0x00],
[0x00, 0x18, 0x24, 0x24, 0xFC, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x7C, 0x08, 0x04, 0x00, 0x00, 0x00],
[0x00, 0x48, 0x54, 0x54, 0x24, 0x00, 0x00, 0x00],
[0x00, 0x04, 0x7F, 0x44, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x3C, 0x40, 0x40, 0x7C, 0x00, 0x00, 0x00],
[0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C, 0x00, 0x00],
[0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C, 0x00, 0x00],
[0x00, 0x44, 0x28, 0x10, 0x28, 0x44, 0x00, 0x00],
[0x00, 0x1C, 0xA0, 0xA0, 0x7C, 0x00, 0x00, 0x00],
[0x00, 0x44, 0x64, 0x54, 0x4C, 0x44, 0x00, 0x00],
[0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x00, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x41, 0x36, 0x08, 0x00, 0x00, 0x00, 0x00],
[0x00, 0x02, 0x01, 0x01, 0x02, 0x01, 0x00, 0x00],
[0x00, 0x02, 0x05, 0x05, 0x02, 0x00, 0x00, 0x00]]
class GroveOledDisplay128x64(object):
HORIZONTAL = 0x00
VERTICAL = 0x01
PAGE = 0x02
def __init__(self, bus=None, address=0x3C):
self.bus = Bus(bus)
self.address = address
self.off()
self.inverse = False
self.mode = self.HORIZONTAL
self.width = 128 # test
self.height = 64 # test
self._pages = self.height//8 # test
self._buffer = [0]*(self.width*self._pages) # test
self.clear()
self.on()
def on(self):
self.send_command(_DISPLAY_ON)
def off(self):
self.send_command(_DISPLAY_OFF)
def send_command(self, command):
self.bus.write_byte_data(self.address, _COMMAND_MODE, command)
def send_data(self, data):
self.bus.write_byte_data(self.address, _DATA_MODE, data)
def send_commands(self, commands):
for c in commands:
self.send_command(c)
def clear(self):
self.off()
self._buffer = [0]*(self.width*self._pages)
self.adf_display()
self.on()
self.set_cursor(0, 0)
@property
def inverse(self):
return self._inverse
@inverse.setter
def inverse(self, enable):
self.send_command(_INVERSE_DISPLAY if enable else _NORMAL_DISPLAY)
self._inverse = enable
@property
def mode(self):
return self._mode
@mode.setter
def mode(self, mode):
self.send_command(0x20)
self.send_command(mode)
self._mode = mode
def set_cursor(self, row, column):
self.send_command(0xB0 + row)
self.send_command(0x00 + (8*column & 0x0F))
self.send_command(0x10 + ((8*column>>4)&0x0F))
def putc(self, c):
C_add = ord(c)
if C_add < 32 or C_add > 127: # Ignore non-printable ASCII characters
c = ' '
C_add = ord(c)
for i in range(0, 8):
self.send_data(BasicFont[C_add-32][i])
def puts(self, text):
for c in text:
self.putc(c)
def adf_image(self, image):
"""Set buffer to value of Python Imaging Library image. The image should
be in 1 bit mode and a size equal to the display size.
"""
if image.mode != '1':
raise ValueError('Image must be in mode 1.')
imwidth, imheight = image.size
if imwidth != 128 or imheight != 64:
raise ValueError('Image must be same dimensions as display (128x64).')
# Grab all the pixels from the image, faster than getpixel.
pix = image.load()
# Iterate through the memory pages
index = 0
for page in range(self._pages):
# Iterate through all x axis columns.
for x in range(self.width):
# Set the bits for the column of pixels at the current position.
bits = 0
# Don't use range here as it's a bit slow
for bit in [0, 1, 2, 3, 4, 5, 6, 7]:
bits = bits << 1
bits |= 0 if pix[(x, page*8+7-bit)] == 0 else 1
# Update buffer byte and increment to next byte.
self._buffer[index] = bits
index += 1
def adf_display(self):
"""Write display buffer to physical display."""
# self.command(SSD1306_COLUMNADDR)
# self.command(0) # Column start address. (0 = reset)
# self.command(self.width-1) # Column end address.
# self.command(SSD1306_PAGEADDR)
# self.command(0) # Page start address. (0 = reset)
# self.command(self._pages-1) # Page end address.
# Write buffer data.
for i in range(0, len(self._buffer), 16):
control = 0x40 # Co = 0, DC = 0
#self._i2c.writeList(control, self._buffer[i:i+16])
#self._bus.write_i2c_block_data(self._address, register, data)
#self.bus.write_byte_data(self.address, _DATA_MODE, data)
self.bus.write_i2c_block_data(self.address, _DATA_MODE, self._buffer[i:i+16])
def show_image(self, image):
#im = image #Image.open(image)
#bw = im.convert('1')
pixels = np.array(image.getdata())
#pixels = image.load()
page_size = 128 * 8
self.set_cursor(0, 0)
# iterate through pages
for page in range(8):
start = page_size * page
end = start + page_size
# iterate through x-axis columns
for i in range(start, start + 128):
data = np.packbits(pixels[i:end:128][::-1])[0]
self.send_data(data)
# def display_text(display, line1, line2=""):
# # Set up image and draw some text.
# #display.clear()
# # display.set_cursor(0, 0)
# # display.puts(line1)
# # display.set_cursor(1, 0)
# # display.puts(line2)
# #width = display.width
# #height = display.height
# image = Image.new('1', (128, 64))
# draw = ImageDraw.Draw(image)
# draw.text((0, 0), line1, font=font, fill=255)
# if line2 is not None:
# draw.text((0, 20), line2, font=font, fill=255)
# # Display image.
# #display.show_image(image)
# display.adf_image(image)
# display.adf_display()
# #display.display()
def setup_display():
disp = GroveOledDisplay128x64()
disp.set_cursor(0, 0)
#disp.puts('EMPI Loading... ')
#display.set_cursor(1, 4)
#display.puts('world')
#disp.clear()
# font = ImageFont.truetype('Minecraftia.ttf', 8)
#font = ImageFont.load_default()
return disp