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Added Waveshare ePaper support

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Also added ability to push 1bpp bitmaps to a Sprite to support rendering
images on an EPaper screen.

Floyd-Steinberg dithering and basic graphics example added as first
ePaper demo.
This commit is contained in:
Bodmer
2018-04-02 02:53:42 +01:00
parent d5f0812bbb
commit ada678d76e
10 changed files with 760 additions and 10 deletions
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Extensions/Sprite.cpp
+73 -2
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@@ -304,7 +304,42 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, uint32_t w, uint32_t h, uint1
}
}
}
// TODO Currently does nothing for 1 bpp
else // 1bpp
{
// Move coordinate rotation to support fn
if (_rotation == 1)
{
int32_t tx = x;
x = _dwidth - y - 1;
y = tx;
}
else if (_rotation == 2)
{
x = _dwidth - x - 1;
y = _dheight - y - 1;
}
else if (_rotation == 3)
{
int32_t tx = x;
x = y;
y = _dheight - tx - 1;
}
uint8_t* pdata = (uint8_t*) data;
uint32_t ww = (w+7) & 0xFFF8;
for (int32_t yp = 0; yp<h; yp++)
{
for (int32_t xp = 0; xp<ww; xp+=8)
{
uint8_t pbyte = *pdata++;
for (uint8_t xc = 0; xc < 8; xc++)
{
if (xp+xc<w) drawPixel(x+xp+xc, y+yp, (pbyte<<xc) & 0x80);
}
}
}
}
}
@@ -329,6 +364,7 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, uint32_t w, uint32_t h, const
}
}
}
else if (_bpp == 8)
{
for (uint32_t yp = y; yp < y + h; yp++)
@@ -341,7 +377,42 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, uint32_t w, uint32_t h, const
}
}
}
// TODO Currently does nothing for 1 bpp
else // 1bpp
{
// Move coordinate rotation to support fn
if (_rotation == 1)
{
int32_t tx = x;
x = _dwidth - y - 1;
y = tx;
}
else if (_rotation == 2)
{
x = _dwidth - x - 1;
y = _dheight - y - 1;
}
else if (_rotation == 3)
{
int32_t tx = x;
x = y;
y = _dheight - tx - 1;
}
const uint8_t* pdata = (const uint8_t* ) data;
uint32_t ww = (w+7) & 0xFFF8;
for (int32_t yp = 0; yp<h; yp++)
{
for (int32_t xp = 0; xp<ww; xp+=8)
{
uint8_t pbyte = pgm_read_byte(pdata++);
for (uint8_t xc = 0; xc < 8; xc++)
{
if (xp+xc<w) drawPixel(x+xp+xc, y+yp, (pbyte<<xc) & 0x80);
}
}
}
}
}