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decreased the change of a overflow happening in draw_pixel, some more calculations and improvements are needed

embedded-hal-1.0
Chris 2018-05-26 17:38:51 +02:00
parent 2272ef80ee
commit 03f2cbc942
2 changed files with 3 additions and 1 deletions
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2
examples/embedded_linux/src/main.rs
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@ -13,6 +13,8 @@ use lin_hal::sysfs_gpio::Direction;
use lin_hal::Delay; use lin_hal::Delay;
// activate spi, gpio in raspi-config // activate spi, gpio in raspi-config
// needs to be run with sudo because of some sysfs_gpio permission problems and follow-up timing problems
// see https://github.com/rust-embedded/rust-sysfs-gpio/issues/5 and follow-up issues
// DigitalIn Hack as long as it's not in the linux_embedded_hal // DigitalIn Hack as long as it's not in the linux_embedded_hal

2
src/drawing/mod.rs
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@ -87,7 +87,7 @@ impl Graphics {
pub fn draw_pixel(&self, buffer: &mut[u8], x: u16, y: u16, color: &Color) { pub fn draw_pixel(&self, buffer: &mut[u8], x: u16, y: u16, color: &Color) {
let (idx, bit) = match self.rotation { let (idx, bit) = match self.rotation {
Displayorientation::Rotate0 | Displayorientation::Rotate180 Displayorientation::Rotate0 | Displayorientation::Rotate180
=> ((x + self.width * y) / 8, => ((x / 8 + (self.width / 8) * y) ,
0x80 >> (x % 8)), 0x80 >> (x % 8)),
Displayorientation::Rotate90 | Displayorientation::Rotate270 Displayorientation::Rotate90 | Displayorientation::Rotate270
=> (y / 8 * self.width + x, => (y / 8 * self.width + x,