Revision 15
Finished set_frequency
| timer.c | ||
|---|---|---|
| 25 | 25 |
if (sys_outb(TIMER_CTRL, write_cmd)) return 1; |
| 26 | 26 |
|
| 27 | 27 |
// counter_init = clock/freq |
| 28 |
// uint16_t counter_init = (uint16_t)(TIMER_FREQ / freq);
|
|
| 28 |
uint16_t counter_init = (uint16_t)(TIMER_FREQ / freq); |
|
| 29 | 29 |
|
| 30 | 30 |
int timer_port = 0; |
| 31 | 31 |
switch(timer) {
|
| 32 | 32 |
case 0: timer_port = TIMER_0; break; |
| 33 | 33 |
case 1: timer_port = TIMER_1; break; |
| 34 | 34 |
case 2: timer_port = TIMER_2; break; |
| 35 |
default: return 1; break; |
|
| 35 |
default: return 1; break;
|
|
| 36 | 36 |
} |
| 37 |
uint8_t lsb = 0, msb = 0; |
|
| 38 |
if (util_get_LSB(counter_init, &lsb)) return 1; |
|
| 39 |
if (util_get_MSB(counter_init, &msb)) return 1; |
|
| 37 | 40 |
|
| 41 |
if (sys_outb(timer_port, lsb)) return 1; |
|
| 42 |
if (sys_outb(timer_port, msb)) return 1; |
|
| 38 | 43 |
|
| 44 |
//if (sys_outw(timer_port, counter_init)) return 1; |
|
| 39 | 45 |
|
| 40 |
return 1;
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|
| 46 |
return 0;
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|
| 41 | 47 |
} |
| 42 | 48 |
|
| 43 | 49 |
int (timer_subscribe_int)(uint8_t *bit_no) {
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