root / lab3 / lab2.c @ 4
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| 1 | 4 | up20180614 | #include <lcom/lcf.h> |
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| 2 | #include <lcom/lab2.h> |
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| 3 | |||
| 4 | #include <stdbool.h> |
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| 5 | #include <stdint.h> |
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| 6 | |||
| 7 | #include "i8254.h" |
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| 8 | //#include "timer.c"
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| 9 | extern uint32_t cont;
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| 10 | |||
| 11 | |||
| 12 | int main(int argc, char *argv[]) { |
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| 13 | |||
| 14 | // sets the language of LCF messages (can be either EN-US or PT-PT)
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| 15 | lcf_set_language("EN-US");
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| 16 | |||
| 17 | // enables to log function invocations that are being "wrapped" by LCF
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| 18 | // [comment this out if you don't want/need it]
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| 19 | lcf_trace_calls("/home/lcom/labs/lab2/trace.txt");
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| 20 | |||
| 21 | // enables to save the output of printf function calls on a file
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| 22 | // [comment this out if you don't want/need it]
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| 23 | lcf_log_output("/home/lcom/labs/lab2/output.txt");
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| 24 | |||
| 25 | // handles control over to LCF
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| 26 | // [LCF handles command line arguments and invokes the right function]
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| 27 | if (lcf_start(argc, argv))
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| 28 | return 1; |
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| 29 | |||
| 30 | // LCF clean up tasks
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| 31 | // [must be the last statement before return]
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| 32 | lcf_cleanup(); |
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| 33 | |||
| 34 | return 0; |
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| 35 | } |
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| 36 | |||
| 37 | int(timer_test_read_config)(uint8_t timer, enum timer_status_field field) { |
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| 38 | /* To be implemented by the students */
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| 39 | uint8_t st; |
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| 40 | if(timer_get_conf(timer,&st)==1) return 1; |
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| 41 | if(timer_display_conf(timer,st,field)==1) return 1; |
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| 42 | |||
| 43 | return 0; |
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| 44 | // printf("%s is not yet implemented!\n", __func__);
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| 45 | |||
| 46 | } |
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| 47 | |||
| 48 | int(timer_test_time_base)(uint8_t timer, uint32_t freq) {
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| 49 | /* To be implemented by the students */
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| 50 | if(freq<MIN_FREQ || freq>TIMER_FREQ)
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| 51 | {
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| 52 | printf("OUT OF RANGE FREQUENCY\n");
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| 53 | return 1; |
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| 54 | } |
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| 55 | return(timer_set_frequency(timer,freq));
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| 56 | //printf("%s is not yet implemented!\n", __func__);
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| 57 | |||
| 58 | } |
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| 59 | |||
| 60 | int(timer_test_int)(uint8_t time) {
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| 61 | /* To be implemented by the students */
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| 62 | |||
| 63 | if(time<0) |
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| 64 | {
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| 65 | printf("INVALID TIME!");
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| 66 | return 1; |
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| 67 | } |
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| 68 | |||
| 69 | int ipc_status;
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| 70 | message msg; |
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| 71 | uint8_t r; |
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| 72 | uint8_t bit_no = 0;
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| 73 | timer_subscribe_int(&bit_no); |
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| 74 | while( (cont/DEFAULT_FREQ)<time )
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| 75 | { /* You may want to use a different condition */
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| 76 | /* Get a request message. */
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| 77 | // printf("1\n");
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| 78 | //printf("cont:%d, time:%d\n\n",cont/60,time);
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| 79 | if ( (r = driver_receive(ANY, &msg, &ipc_status)) != 0 ) |
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| 80 | {
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| 81 | printf("driver_receive failed with: %d", r);
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| 82 | continue;
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| 83 | } |
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| 84 | if (is_ipc_notify(ipc_status)) { /* received notification */ |
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| 85 | switch (_ENDPOINT_P(msg.m_source)) {
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| 86 | case HARDWARE: /* hardware interrupt notification */ |
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| 87 | if (msg.m_notify.interrupts & BIT(0)) { /* subscribed interrupt */ |
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| 88 | timer_int_handler(); |
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| 89 | if(cont%DEFAULT_FREQ==0) |
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| 90 | timer_print_elapsed_time(); |
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| 91 | //printf("cont:%d\n",cont);
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| 92 | } |
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| 93 | //printf("msg:%x\n",msg.m_notify.interrupts);
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| 94 | break;
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| 95 | default:
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| 96 | //printf("2\n");
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| 97 | break; /* no other notifications expected: do nothing */ |
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| 98 | } |
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| 99 | } else {
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| 100 | // printf("3\n"); /* received a standard message, not a notification */
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| 101 | /* no standard messages expected: do nothing */
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| 102 | } |
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| 103 | } |
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| 104 | if(timer_unsubscribe_int()!=0) return 1; |
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| 105 | |||
| 106 | |||
| 107 | //printf("%s is not yet implemented!\n", __func__);
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| 108 | |||
| 109 | return 0; |
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| 110 | } |
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| 111 | //dois primeiros bits sao 1, (TIMER_RB_CNTRL|BIT(5))
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| 112 | //SYS_OUTB para controlo->0x43, Config timer 0, dizer que queremos escrever para o controlo, e depois ler a parte corresponder
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| 113 | //g9 |