BLACK = 1
RED = 2
WHITE = 3

WIDTH = 7
HEIGHT = 2

buffer = bytearray(math.ceil((WIDTH * HEIGHT) / 4))
fb = adafruit_framebuf.FrameBuffer(
    buffer, WIDTH, HEIGHT, buf_format=adafruit_framebuf.GS2_HMSB, 
)
fb.fill(WHITE)

def print_arr(a):
   "Print the byte array as paired bytes"
    n = 2
    a = ''.join([f'{v:08b}' for v in a])
    a = [a[i:i + n] for i in range(0, len(a), n)]
    for r in range(HEIGHT):
        print(' '.join(a[r*WIDTH:(r+1)*WIDTH]))
    print(' '.join(a[(r+1)*WIDTH:]))

color_map = {3:'_', 2: '*', 1: '#'}
def print_buffer(the_fb):
    print("+" * (the_fb.width + 2))
    for y in range(the_fb.height):
        print("+", end="")
        for x in range(the_fb.width):
            c = fb.pixel(x, y)
            print(color_map[c], end="")
        print("+")
    print("+" * (the_fb.width + 2))

fb.pixel(4,0, RED) 
print_arr(fb.buf)
print_buffer(fb)

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+++++++++
+____*__+
+*______+
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