Revision 29
minor changes and comments
| lab2.c | ||
|---|---|---|
| 37 | 37 |
|
| 38 | 38 |
int(timer_test_time_base)(uint8_t timer, uint32_t freq) {
|
| 39 | 39 |
if (timer_set_frequency(timer, freq)) return 1; |
| 40 |
return 0; |
|
| 40 |
return 0;
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|
| 41 | 41 |
} |
| 42 | 42 |
|
| 43 | 43 |
extern int no_interrupts; |
| 44 | 44 |
|
| 45 | 45 |
int(timer_test_int)(uint8_t time) {
|
| 46 |
const uint32_t frequency = 60; // Frequency asummed at 60Hz
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|
| 46 |
const int frequency = 60; // Frequency asummed at 60Hz
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|
| 47 | 47 |
int ipc_status, r; |
| 48 | 48 |
message msg; |
| 49 | 49 |
uint8_t hook = 0; |
| 50 | 50 |
no_interrupts = 0; |
| 51 |
timer_subscribe_int(&hook);
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|
| 51 |
if (timer_subscribe_int(&hook)) return 1;
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|
| 52 | 52 |
int irq_set = BIT(hook); |
| 53 | 53 |
while (time) {
|
| 54 | 54 |
/* Get a request message. */ |
| ... | ... | |
| 61 | 61 |
case HARDWARE: /* hardware interrupt notification */ |
| 62 | 62 |
if (msg.m_notify.interrupts & irq_set) { /* subscribed interrupt */
|
| 63 | 63 |
timer_int_handler(); |
| 64 |
if (!(no_interrupts % frequency)) {
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| 64 |
if (!(no_interrupts % frequency)) { /* second elapsed */
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|
| 65 | 65 |
timer_print_elapsed_time(); |
| 66 | 66 |
time--; |
| 67 | 67 |
} |
| ... | ... | |
| 74 | 74 |
/* no standart message expected: do nothing */ |
| 75 | 75 |
} |
| 76 | 76 |
} |
| 77 |
timer_unsubscribe_int();
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|
| 78 |
return 0; |
|
| 77 |
if (timer_unsubscribe_int()) return 1;
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|
| 78 |
return 0;
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|
| 79 | 79 |
} |
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