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docs/library: Fix framebuf monochrome 1-bit modes, swapping HLSB/HMSB. 

This fix can be demonstrated by the following:

    b = bytearray(32)
    f = framebuf.FrameBuffer(b, 32, 8, framebuf.MONO_HLSB)
    f.pixel(0, 0, 1)
    print('MONO_HLSB', hex(b[0]))

    b = bytearray(32)
    f = framebuf.FrameBuffer(b, 32, 8, framebuf.MONO_HMSB)
    f.pixel(0, 0, 1)
    print('MONO_HMSB', hex(b[0]))

Outcome:

    MONO_HLSB 0x80
    MONO_HMSB 0x1
This commit is contained in:
Peter Hinch 2020-02-09 16:07:39 +00:00 committed by Damien George
parent ce40abcf21
commit 88cbfd791a
1 changed files with 2 additions and 2 deletions
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docs/library/framebuf.rst
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@ -130,7 +130,7 @@ Constants
Monochrome (1-bit) color format
This defines a mapping where the bits in a byte are horizontally mapped.
Each byte occupies 8 horizontal pixels with bit 0 being the leftmost.
Each byte occupies 8 horizontal pixels with bit 7 being the leftmost.
Subsequent bytes appear at successive horizontal locations until the
rightmost edge is reached. Further bytes are rendered on the next row, one
pixel lower.
@ -139,7 +139,7 @@ Constants
Monochrome (1-bit) color format
This defines a mapping where the bits in a byte are horizontally mapped.
Each byte occupies 8 horizontal pixels with bit 7 being the leftmost.
Each byte occupies 8 horizontal pixels with bit 0 being the leftmost.
Subsequent bytes appear at successive horizontal locations until the
rightmost edge is reached. Further bytes are rendered on the next row, one
pixel lower.