DigitalInfinity/ESP32-PaxCounter
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pax curve plotter

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This commit is contained in:
Verkehrsrot 2019-10-01 13:35:05 +02:00
parent 66af2b8c54
commit be01760c32
1 changed files with 4 additions and 7 deletions
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11
src/display.cpp
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@ -397,18 +397,15 @@ void oledfillRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height,
int oledDrawPixel(uint8_t *buf, const uint16_t x, const uint16_t y, int oledDrawPixel(uint8_t *buf, const uint16_t x, const uint16_t y,
const uint8_t dot) { const uint8_t dot) {
uint8_t page, bit;
if (x > DISPLAY_WIDTH || y > DISPLAY_HEIGHT) if (x > DISPLAY_WIDTH || y > DISPLAY_HEIGHT)
return -1; return -1;
page = y / 8; uint8_t bit = y & 7;
bit = y % 8; uint16_t idx = y / 8 * DISPLAY_WIDTH + x;
buf[idx] &= ~(1 << bit); // clear pixel
if (dot) if (dot)
buf[page * DISPLAY_WIDTH + x] |= (1 << bit); // mark buf[idx] |= (1 << bit); // set pixel
else
buf[page * DISPLAY_WIDTH + x] &= ~(0 << bit); // clear
return 0; return 0;
} }