Subversion Repositories freemyipod

Rev

Rev 595 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 595 Rev 597
Line 25... Line 25...
25
#include "timer.h"
25
#include "timer.h"
26
#include "thread.h"
26
#include "thread.h"
27
#include "s5l8702.h"
27
#include "s5l8702.h"
28
 
28
 
29
 
29
 
30
void setup_tick()
30
void timer_init()
31
{
31
{
32
    int cycles = SYSTEM_TICK / 100;
-
 
33
    
-
 
34
    TACMD = (1 << 1);   /* TA_CLR */
32
    TACMD = (1 << 1);   /* TA_CLR */
35
    TBCMD = (1 << 1);   /* TB_CLR */
33
    TBCMD = (1 << 1);   /* TB_CLR */
36
    TCCMD = (1 << 1);   /* TC_CLR */
34
    TCCMD = (1 << 1);   /* TC_CLR */
37
    TDCMD = (1 << 1);   /* TD_CLR */
35
    TDCMD = (1 << 1);   /* TD_CLR */
38
    TGCMD = (1 << 1);   /* TG_CLR */
36
    TGCMD = (1 << 1);   /* TG_CLR */
39
    THCMD = (1 << 1);   /* TH_CLR */
37
    THCMD = (1 << 1);   /* TH_CLR */
-
 
38
}
40
 
39
 
-
 
40
void timer_schedule_wakeup(uint32_t usecs)
-
 
41
{
-
 
42
    if (usecs > 9942053)
-
 
43
    {
-
 
44
        TBPRE = 511;
-
 
45
        TBDATA1 = 65535;
-
 
46
    }
-
 
47
    else if (usecs > 19417)
-
 
48
    {
-
 
49
        TBPRE = 511;
41
    /* configure timer for 10 kHz */
50
        TBDATA1 = (usecs * 216) >> 15;
-
 
51
    }
-
 
52
    else
-
 
53
    {
-
 
54
        TBPRE = 0;
42
    TBPRE = 337 - 1;    /* prescaler */
55
        TBDATA1 = (usecs * 216) >> 6;
-
 
56
    }
43
    TBCON = (0 << 13) | /* TB_INT1_EN */
57
    TBCON = (1 << 13) | /* TB_INT1_EN */
44
            (1 << 12) | /* TB_INT0_EN */
58
            (0 << 12) | /* TB_INT0_EN */
45
            (0 << 11) | /* TB_START */
59
            (0 << 11) | /* TB_START */
46
            (3 << 8) |  /* TB_CS = PCLK / 64 */
60
            (3 << 8) |  /* TB_CS = PCLK / 64 */
47
            (0 << 4);   /* TB_MODE_SEL = interval mode */
61
            (2 << 4);   /* TB_MODE_SEL = one-shot mode */
48
    TBDATA0 = cycles;   /* set interval period */
62
    TBCMD = (1 << 1);   /* TB_CLR */
49
    TBCMD = (1 << 0);   /* TB_EN */
63
    TBCMD = (1 << 0);   /* TB_EN */
50
}
64
}
51
 
65
 
-
 
66
void timer_kill_wakeup()
-
 
67
{
-
 
68
    TBCMD = (1 << 1);   /* TB_CLR */
-
 
69
    TBCON = TBCON;
-
 
70
}
-
 
71
 
52
void INT_TIMERB(void)
72
void INT_TIMERB(void)
53
{
73
{
54
    TBCON = TBCON;
74
    TBCON = TBCON;
55
    scheduler_switch(NULL, NULL);
75
    scheduler_switch(NULL, NULL);
56
}
76
}