root / lab2 / lab2.c @ 7
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| 1 | 3 | up20180645 | #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 | 4 | up20180645 | extern unsigned int count; |
| 8 | 3 | up20180645 | |
| 9 | int main(int argc, char *argv[]) { |
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| 10 | // sets the language of LCF messages (can be either EN-US or PT-PT)
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| 11 | lcf_set_language("EN-US");
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| 12 | |||
| 13 | // enables to log function invocations that are being "wrapped" by LCF
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| 14 | // [comment this out if you don't want/need it]
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| 15 | lcf_trace_calls("/home/lcom/labs/lab2/trace.txt");
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| 16 | |||
| 17 | // enables to save the output of printf function calls on a file
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| 18 | // [comment this out if you don't want/need it]
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| 19 | lcf_log_output("/home/lcom/labs/lab2/output.txt");
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| 20 | |||
| 21 | // handles control over to LCF
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| 22 | // [LCF handles command line arguments and invokes the right function]
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| 23 | if (lcf_start(argc, argv))
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| 24 | return 1; |
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| 25 | |||
| 26 | // LCF clean up tasks
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| 27 | // [must be the last statement before return]
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| 28 | lcf_cleanup(); |
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| 29 | |||
| 30 | return 0; |
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| 31 | } |
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| 32 | |||
| 33 | 4 | up20180645 | |
| 34 | 3 | up20180645 | int(timer_test_read_config)(uint8_t timer, enum timer_status_field field) { |
| 35 | |||
| 36 | 4 | up20180645 | uint8_t st; |
| 37 | |||
| 38 | if(timer<0|timer>2){ //tests for error in timer selection |
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| 39 | printf("Error selecting timer\n");
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| 40 | return 1; |
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| 41 | } |
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| 42 | else if(timer_get_conf(timer, &st)==1){ |
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| 43 | printf("Error getting configuration\n");
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| 44 | return 1; |
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| 45 | } |
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| 46 | else if(timer_display_conf(timer, st, field)==1){ |
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| 47 | printf("Error getting display configuration\n");
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| 48 | return 1; |
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| 49 | } |
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| 50 | return 0; |
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| 51 | 3 | up20180645 | } |
| 52 | |||
| 53 | int(timer_test_time_base)(uint8_t timer, uint32_t freq) {
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| 54 | |||
| 55 | 5 | up20180645 | if(timer<0|timer>2){ //tests for error in timer selection |
| 56 | printf("Error selecting timer\n");
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| 57 | return 1; |
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| 58 | } |
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| 59 | if(timer_set_frequency(timer, freq)==1){ //tests for error |
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| 60 | 4 | up20180645 | printf("Error testing time base\n");
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| 61 | return 1; |
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| 62 | } |
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| 63 | return 0; |
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| 64 | 3 | up20180645 | } |
| 65 | |||
| 66 | int(timer_test_int)(uint8_t time) {
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| 67 | 4 | up20180645 | int r, ipc_status;
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| 68 | uint8_t irq_set; |
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| 69 | message msg; |
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| 70 | 3 | up20180645 | |
| 71 | 5 | up20180645 | if(timer_set_frequency(0, 60)==1){ //tests for error |
| 72 | printf("Error setting frequency\n");
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| 73 | return 1; |
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| 74 | } |
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| 75 | |||
| 76 | 4 | up20180645 | if(timer_subscribe_int(&irq_set)==1){ |
| 77 | printf("Error subscribing int\n");
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| 78 | return 1; |
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| 79 | } |
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| 80 | |||
| 81 | 5 | up20180645 | while(count/sys_hz()<time){ //looping until counter reaches the same value as time |
| 82 | if ((r = driver_receive(ANY, &msg, &ipc_status))==1){ |
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| 83 | 4 | up20180645 | printf("driver_receive failed with: %d",r);
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| 84 | continue;
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| 85 | } |
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| 86 | if (is_ipc_notify(ipc_status)){ //received notification |
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| 87 | switch (_ENDPOINT_P(msg.m_source)){
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| 88 | case HARDWARE: //hardware interrupt notification |
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| 89 | if (msg.m_notify.interrupts &irq_set){ // subscribed interrupt |
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| 90 | |||
| 91 | timer_int_handler(); |
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| 92 | |||
| 93 | 5 | up20180645 | if((count%sys_hz())==0){ |
| 94 | 4 | up20180645 | timer_print_elapsed_time(); //prints message each second;
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| 95 | } |
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| 96 | } |
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| 97 | break;
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| 98 | default:
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| 99 | break; //no other notifications expected: do nothing |
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| 100 | } |
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| 101 | } |
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| 102 | else { //received a standard message, not a notification |
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| 103 | 5 | up20180645 | //no standard messages expected: do nothing
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| 104 | 4 | up20180645 | } |
| 105 | } |
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| 106 | |||
| 107 | if(timer_unsubscribe_int()==1){ |
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| 108 | printf("Error unsubscribing int\n");
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| 109 | return 1; |
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| 110 | } |
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| 111 | return 0; |
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| 112 | 3 | up20180645 | } |