Skip to content

F
fwatch
Commit 6054d48d authored by Projects's avatar Projects
Browse files
Options

lcd: Rotated extra 180 degrees.

parent c56d0c38
Hide whitespace changes
Inline Side-by-side
Showing with 16 additions and 7 deletions
sw/common/drivers/lcd.c
View file @ 6054d48d
......@@ -32,7 +32,7 @@
#include <udelay.h>
// Enable 90* rotation
#define LCD_ROTATE
#define LCD_ROTATE_90
// Do not use DMA for frame transfer
#define LCD_NODMA
......@@ -265,13 +265,16 @@ void lcd_set_pixel(uint8_t x, uint8_t y, uint8_t value)
x %= LCD_WIDTH;
y %= LCD_HEIGHT;
#ifdef LCD_ROTATE
#if defined(LCD_ROTATE_90)
uint8_t mask = 0x80 >> (y & 0x07);
uint16_t offset = (x * LCD_STRIDE) + ((LCD_HEIGHT - 1 - y) >> 3);
#elif defined(LCD_ROTATE_270)
uint8_t mask = 1 << (y & 0x07);
uint16_t offset = ((LCD_WIDTH - x - 1) * LCD_STRIDE) + (y >> 3);
#else
uint8_t mask = 1 << (x & 0x07); // == 1 << (x % 8)
uint16_t offset = (y * LCD_STRIDE) + (x >> 3); // == y * LCD_STRIDE + x / 8
#endif /* else LCD_ROTATE */
#endif
if(value)
buffer[offset] |= mask;
......@@ -284,13 +287,16 @@ void lcd_toggle_pixel(uint8_t x, uint8_t y)
x %= LCD_WIDTH;
y %= LCD_HEIGHT;
#ifdef LCD_ROTATE
#if defined(LCD_ROTATE_90)
uint8_t mask = 0x80 >> (y & 0x07);
uint16_t offset = (x * LCD_STRIDE) + ((LCD_HEIGHT - 1 - y) >> 3);
#elif defined(LCD_ROTATE_270)
uint8_t mask = 1 << (y & 0x07);
uint16_t offset = ((LCD_WIDTH - x - 1) * LCD_STRIDE) + (y >> 3);
#else
uint8_t mask = 1 << (x & 0x07); // == 1 << (x % 8)
uint16_t offset = (y * LCD_STRIDE) + (x >> 3); // == y * LCD_STRIDE + x / 8
#endif /* else LCD_ROTATE */
#endif
buffer[offset] ^= mask;
}
......@@ -300,13 +306,16 @@ uint8_t lcd_get_pixel(uint8_t x, uint8_t y)
x %= LCD_WIDTH;
y %= LCD_HEIGHT;
#ifdef LCD_ROTATE
#if defined(LCD_ROTATE_90)
uint8_t mask = 0x80 >> (y & 0x07);
uint16_t offset = (x * LCD_STRIDE) + ((LCD_HEIGHT - 1 - y) >> 3);
#elif defined(LCD_ROTATE_270)
uint8_t mask = 1 << (y & 0x07);
uint16_t offset = ((LCD_WIDTH - x - 1) * LCD_STRIDE) + (y >> 3);
#else
uint8_t mask = 1 << (x & 0x07); // == 1 << (x % 8)
uint16_t offset = (y * LCD_STRIDE) + (x >> 3); // == y * LCD_STRIDE + x / 8
#endif /* else LCD_ROTATE */
#endif
return buffer[offset] & mask;
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment