79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
|
/*
|
||
|
|
|
||
|
|
u8g2_buffer.c
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "u8g2.h"
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
/*============================================*/
|
||
|
|
void u8g2_ClearBuffer(u8g2_t *u8g2)
|
||
|
|
{
|
||
|
|
size_t cnt;
|
||
|
|
cnt = u8g2_GetU8x8(u8g2)->display_info->tile_width;
|
||
|
|
cnt *= u8g2->tile_buf_height;
|
||
|
|
cnt *= 8;
|
||
|
|
memset(u8g2->tile_buf_ptr, 0, cnt);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*============================================*/
|
||
|
|
|
||
|
|
static void u8g2_send_tile_row(u8g2_t *u8g2, uint8_t src_tile_row, uint8_t dest_tile_row)
|
||
|
|
{
|
||
|
|
uint8_t *ptr;
|
||
|
|
uint16_t offset;
|
||
|
|
uint8_t w;
|
||
|
|
|
||
|
|
w = u8g2_GetU8x8(u8g2)->display_info->tile_width;
|
||
|
|
offset = src_tile_row;
|
||
|
|
ptr = u8g2->tile_buf_ptr;
|
||
|
|
offset *= w;
|
||
|
|
offset *= 8;
|
||
|
|
ptr += offset;
|
||
|
|
|
||
|
|
u8x8_display_DrawTile(u8g2_GetU8x8(u8g2), 0, dest_tile_row, w, ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
void u8g2_SendBuffer(u8g2_t *u8g2)
|
||
|
|
{
|
||
|
|
uint8_t src_row;
|
||
|
|
uint8_t src_max;
|
||
|
|
uint8_t dest_row;
|
||
|
|
uint8_t dest_max;
|
||
|
|
|
||
|
|
src_row = 0;
|
||
|
|
src_max = u8g2->tile_buf_height;
|
||
|
|
dest_row = u8g2->tile_curr_row;
|
||
|
|
dest_max = u8g2_GetU8x8(u8g2)->display_info->tile_height;
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
u8g2_send_tile_row(u8g2, src_row, dest_row);
|
||
|
|
src_row++;
|
||
|
|
dest_row++;
|
||
|
|
} while( src_row < src_max && dest_row < dest_max );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*============================================*/
|
||
|
|
void u8g2_FirstPage(u8g2_t *u8g2)
|
||
|
|
{
|
||
|
|
u8g2_ClearBuffer(u8g2);
|
||
|
|
u8g2->tile_curr_row = 0;
|
||
|
|
u8g2->cb->update(u8g2);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t u8g2_NextPage(u8g2_t *u8g2)
|
||
|
|
{
|
||
|
|
uint8_t row;
|
||
|
|
u8g2_SendBuffer(u8g2);
|
||
|
|
row = u8g2->tile_curr_row;
|
||
|
|
row += u8g2->tile_buf_height;
|
||
|
|
if ( row >= u8g2_GetU8x8(u8g2)->display_info->tile_height )
|
||
|
|
return 0;
|
||
|
|
u8g2_ClearBuffer(u8g2);
|
||
|
|
u8g2->tile_curr_row = row;
|
||
|
|
u8g2->cb->update(u8g2);
|
||
|
|
return 1;
|
||
|
|
}
|