Revision 26
minor changes
| lab2/lab2.c | ||
|---|---|---|
| 40 | 40 |
return 0; |
| 41 | 41 |
} |
| 42 | 42 |
|
| 43 |
extern uint32_t no_interrupts;
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|
| 43 |
extern int no_interrupts;
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|
| 44 | 44 |
|
| 45 | 45 |
int(timer_test_int)(uint8_t time) {
|
| 46 | 46 |
int ipc_status, r; |
| ... | ... | |
| 48 | 48 |
uint8_t hook = 0; |
| 49 | 49 |
no_interrupts = 0; |
| 50 | 50 |
int freq = 60; // better way to get the frequency of the timer??? |
| 51 |
printf("Hook pre: %x\n", hook);
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|
| 52 | 51 |
timer_subscribe_int(&hook); |
| 53 |
printf("Hook pos: %x\n", hook);
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|
| 54 | 52 |
int irq_set = BIT(hook); |
| 55 |
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|
| 56 | 53 |
while (time) {
|
| 57 | 54 |
/* Get a request message. */ |
| 58 | 55 |
if ((r = driver_receive(ANY, &msg, &ipc_status)) != 0) {
|
| ... | ... | |
| 62 | 59 |
if (is_ipc_notify(ipc_status)) { /* received notification */
|
| 63 | 60 |
switch (_ENDPOINT_P(msg.m_source)) {
|
| 64 | 61 |
case HARDWARE: /* hardware interrupt notification */ |
| 65 |
printf("%x\n", msg.m_notify.interrupts);
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|
| 66 | 62 |
if (msg.m_notify.interrupts & irq_set) { /* subscribed interrupt */
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| 67 | 63 |
timer_int_handler(); |
| 68 |
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|
| 69 | 64 |
if (!(no_interrupts % freq)) {
|
| 70 | 65 |
timer_print_elapsed_time(); |
| 71 | 66 |
time--; |
| ... | ... | |
| 79 | 74 |
/* no standart message expected: do nothing */ |
| 80 | 75 |
} |
| 81 | 76 |
} |
| 82 |
|
|
| 83 | 77 |
timer_unsubscribe_int(); |
| 84 |
|
|
| 85 | 78 |
return 0; |
| 86 | 79 |
} |
| lab2/timer.c | ||
|---|---|---|
| 51 | 51 |
int hook_id = 2; |
| 52 | 52 |
|
| 53 | 53 |
int (timer_subscribe_int)(uint8_t *bit_no) {
|
| 54 |
if(bit_no == NULL) return 1; |
|
| 54 | 55 |
*bit_no = hook_id; |
| 55 | 56 |
if(sys_irqsetpolicy(TIMER0_IRQ, IRQ_REENABLE, &hook_id)) return 1; |
| 56 | 57 |
return 0; |
| ... | ... | |
| 61 | 62 |
return 0; |
| 62 | 63 |
} |
| 63 | 64 |
|
| 64 |
uint32_t no_interrupts = 0;
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|
| 65 |
int no_interrupts = 0;
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| 65 | 66 |
void (timer_int_handler)() {
|
| 66 | 67 |
no_interrupts++; |
| 67 | 68 |
} |
| 68 | 69 |
|
| 69 | 70 |
int (timer_get_conf)(uint8_t timer, uint8_t *st) {
|
| 71 |
if(st == NULL) return 1; |
|
| 70 | 72 |
// Write read-back command to TIMER_CTRL |
| 71 | 73 |
u32_t cmd = TIMER_RB_CMD | TIMER_RB_COUNT_ | TIMER_RB_SEL(timer); |
| 72 | 74 |
if(sys_outb(TIMER_CTRL, cmd)) return 1; |
| 73 |
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|
| 74 | 75 |
int read_port; |
| 75 | 76 |
switch(timer) {
|
| 76 | 77 |
case 0: read_port = TIMER_0; break; |
| lab2/utils.c | ||
|---|---|---|
| 4 | 4 |
|
| 5 | 5 |
int(util_get_LSB)(uint16_t val, uint8_t *lsb) {
|
| 6 | 6 |
if (lsb == NULL) return 1; |
| 7 |
|
|
| 8 | 7 |
*lsb = (uint8_t)val; |
| 9 | 8 |
return 0; |
| 10 | 9 |
} |
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