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moved testing out to its own module and exposed some frame buffer information for driver code

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This commit is contained in:
shockrah 2019-09-16 13:49:36 -07:00
parent e6a5966fe6
commit f8d16f9411
2 changed files with 7 additions and 13 deletions
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14
framebuffer.c
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@ -8,13 +8,16 @@
#include "types.h"
#include "framebuffer.h"
// State trackers from header
static u8* Frame_Buffer = (u8*)FRAME_BUFFER_ADDR;
s32 Frame_Buffer_Cursor = 0;
// Writes character to a given cell in the framebuffer
// @cell parameter is the logical (linear)index into the buffer
void write_cell_fb(u32 cell, u8 c, u8 fg, u8 bg) {
void write_cell_fb(u16 cell, u8 c, u8 fg, u8 bg) {
Frame_Buffer[cell] = c;
Frame_Buffer[cell+1] = (fg & 0x0f << 4) | (bg & 0x0f);
Frame_Buffer_Cursor++;
}
void clear_fb(void) {
@ -23,6 +26,7 @@ void clear_fb(void) {
}
}
// Takes the linear indexed position to move the cursos, if there is nothing at that position we should still have something there
void fb_move_cursor(u16 position) {
out_buffer(FB_CMD, FB_HIGH_CMD);
out_buffer(FB_DATA, ((position >> 8) & 0x00ff) );
@ -30,11 +34,3 @@ void fb_move_cursor(u16 position) {
out_buffer(FB_DATA, position & 0x00ff);
}
/* generic test func for this module */
void test_fb(void) {
clear_fb();
write_cell_fb(FRAME_CELL(0), 'a', Green, White);
write_cell_fb(FRAME_CELL(1), 'b', Green, White);
write_cell_fb(FRAME_CELL(2), 'c', Green, White);
fb_move_cursor(5);
}

6
framebuffer.h
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@ -36,13 +36,11 @@
#define LightBrown 0x0e
#define White 0x0f
void write_cell_fb(u32, u8, u8, u8);
extern s32 Frame_Buffer_Cursor;
void print_fb(u8*, u32);
void write_cell_fb(u16, u8, u8, u8);
void clear_fb(void);
void fb_move_cursor(u16);
/* Testing function because yote squad in here yeye */
void test_fb(void);