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超时功能

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Yourtion
2016-04-18 14:06:26 +08:00
parent 3aea776876
commit b50c16d8e0
3 changed files with 36 additions and 4 deletions
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15
12_day/bootpack.c
View File

@@ -8,7 +8,8 @@ void make_window8(unsigned char *buf, int xsize, int ysize, char *title);
void HariMain(void)
{
struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
char s[40], keybuf[32], mousebuf[128];
struct FIFO8 timerfifo;
char s[40], keybuf[32], mousebuf[128], timerbuf[8];
int mx, my, i;
unsigned int memtotal;
struct MOUSE_DEC mdec;
@@ -20,13 +21,16 @@ void HariMain(void)
init_gdtidt();
init_pic();
io_sti(); /* IDT/PIC的初始化已经完成，于是开放CPU的中断 */
fifo8_init(&keyfifo, 32, keybuf);
fifo8_init(&mousefifo, 128, mousebuf);
init_pit();
io_out8(PIC0_IMR, 0xf8); /* PIT和PIC1和键盘设置为许可(11111000) */
io_out8(PIC1_IMR, 0xef); /* 开放鼠标中断(11101111) */
fifo8_init(&timerfifo, 8, timerbuf);
settimer(1000, &timerfifo, 1);
init_keyboard();
enable_mouse(&mdec);
memtotal = memtest(0x00400000, 0xbfffffff);
@@ -68,7 +72,7 @@ void HariMain(void)
sheet_refresh(sht_win, 40, 28, 120, 44); /* 到这里结束 */
io_cli();
if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) == 0) {
if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) + fifo8_status(&timerfifo) == 0) {
io_sti(); /* 不做HLT */
} else {
if (fifo8_status(&keyfifo) != 0) {
@@ -117,6 +121,11 @@ void HariMain(void)
sheet_refresh(sht_back, 0, 0, 80, 16); /* 刷新文字 */
sheet_slide(sht_mouse, mx, my); /* 包含sheet_refresh含sheet_refresh */
}
} else if (fifo8_status(&timerfifo) != 0) {
i = fifo8_get(&timerfifo); /* 首先读入（为了设定起始点） */
io_sti();
putfonts8_asc(buf_back, binfo->scrnx, 0, 64, COL8_FFFFFF, "10[sec]");
sheet_refresh(sht_back, 0, 64, 56, 80);
}
}
}

4
12_day/bootpack.h
View File

@@ -171,8 +171,12 @@ void sheet_free(struct SHEET *sht);
/* timer.c */
struct TIMERCTL {
unsigned int count;
unsigned int timeout;
struct FIFO8 *fifo;
unsigned char data;
};
extern struct TIMERCTL timerctl;
void init_pit(void);
void inthandler20(int *esp);
void settimer(unsigned int timeout, struct FIFO8 *fifo, unsigned char data);

21
12_day/timer.c
View File

@@ -9,10 +9,11 @@ struct TIMERCTL timerctl;
void init_pit(void)
{
io_out8(PIT_CTRL, 0x43);
io_out8(PIT_CTRL, 0x34);
io_out8(PIT_CNT0, 0x9c);
io_out8(PIT_CNT0, 0x2e);
timerctl.count = 0;
timerctl.timeout = 0;
return;
}
@@ -20,5 +21,23 @@ void inthandler20(int *esp)
{
io_out8(PIC0_OCW2, 0x60); /* 把IRQ-00信号接收完了的信息通知给PIC */
timerctl.count++;
if (timerctl.timeout > 0) { /* 如果已经设定了超时 */
timerctl.timeout--;
if (timerctl.timeout == 0) {
fifo8_put(timerctl.fifo, timerctl.data);
}
}
return;
}
void settimer(unsigned int timeout, struct FIFO8 *fifo, unsigned char data)
{
int eflags;
eflags = io_load_eflags();
io_cli();
timerctl.timeout = timeout;
timerctl.fifo = fifo;
timerctl.data = data;
io_store_eflags(eflags);
return;
}