root / lab3 / lab3.c @ 30
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| 1 | 30 | up20180655 | #include <lcom/lcf.h> |
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| 2 | |||
| 3 | #include <lcom/lab3.h> |
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| 4 | |||
| 5 | #include <stdbool.h> |
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| 6 | #include <stdint.h> |
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| 7 | |||
| 8 | #include "kbc.h" |
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| 9 | #include "kbc_func.h" |
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| 10 | |||
| 11 | int main(int argc, char *argv[]) { |
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| 12 | // sets the language of LCF messages (can be either EN-US or PT-PT)
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| 13 | lcf_set_language("EN-US");
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| 14 | |||
| 15 | // enables to log function invocations that are being "wrapped" by LCF
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| 16 | // [comment this out if you don't want/need it]
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| 17 | lcf_trace_calls("/home/lcom/labs/lab3/trace.txt");
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| 18 | |||
| 19 | // enables to save the output of printf function calls on a file
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| 20 | // [comment this out if you don't want/need it]
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| 21 | lcf_log_output("/home/lcom/labs/lab3/output.txt");
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| 22 | |||
| 23 | // handles control over to LCF
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| 24 | // [LCF handles command line arguments and invokes the right function]
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| 25 | if (lcf_start(argc, argv))
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| 26 | return 1; |
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| 27 | |||
| 28 | // LCF clean up tasks
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| 29 | // [must be the last statement before return]
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| 30 | lcf_cleanup(); |
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| 31 | |||
| 32 | return 0; |
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| 33 | } |
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| 34 | |||
| 35 | extern uint8_t scancode[2]; |
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| 36 | extern int two_byte_scancode; |
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| 37 | |||
| 38 | int(kbd_test_scan)() {
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| 39 | |||
| 40 | int ipc_status, r;
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| 41 | message msg; |
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| 42 | |||
| 43 | uint8_t kbc_irq_bit = BIT(1);
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| 44 | int kbc_id = 0; |
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| 45 | |||
| 46 | int got_esc_breakcode = 0; |
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| 47 | |||
| 48 | if (subscribe_kbc_interrupt(kbc_irq_bit, &kbc_id)) return 1; |
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| 49 | |||
| 50 | while (!got_esc_breakcode) {
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| 51 | /* Get a request message. */
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| 52 | if ((r = driver_receive(ANY, &msg, &ipc_status)) != 0) { |
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| 53 | printf("driver_receive failed with %d", r);
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| 54 | continue;
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| 55 | } |
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| 56 | if (is_ipc_notify(ipc_status)) { /* received notification */ |
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| 57 | switch (_ENDPOINT_P(msg.m_source)) {
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| 58 | case HARDWARE: /* hardware interrupt notification */ |
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| 59 | if (msg.m_notify.interrupts & kbc_irq_bit) { /* subscribed interrupt */ |
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| 60 | |||
| 61 | kbc_ih(); |
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| 62 | |||
| 63 | if (!two_byte_scancode) { /* finished processing a scancode */ |
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| 64 | if (scancode[0] == TWO_BYTE_CODE) |
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| 65 | kbd_print_scancode(!(scancode[1] & BREAK_CODE_BIT), 2, scancode); |
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| 66 | else
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| 67 | kbd_print_scancode(!(scancode[0] & BREAK_CODE_BIT), 1, scancode); |
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| 68 | } |
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| 69 | |||
| 70 | if (scancode[0] == ESC_BREAK_CODE) |
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| 71 | got_esc_breakcode = 1;
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| 72 | |||
| 73 | } |
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| 74 | break;
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| 75 | default:
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| 76 | break; /* no other notifications expected: do nothing */ |
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| 77 | } |
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| 78 | } else { /* received standart message, not a notification */ |
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| 79 | /* no standart message expected: do nothing */
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| 80 | } |
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| 81 | } |
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| 82 | |||
| 83 | if (unsubscribe_kbc_interrupt(&kbc_id)) return 1; |
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| 84 | |||
| 85 | if (kbd_print_no_sysinb(sys_inb_counter(GET))) return 1; |
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| 86 | |||
| 87 | return 0; |
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| 88 | } |
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| 89 | |||
| 90 | int(kbd_test_poll)() {
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| 91 | /* To be completed by the students */
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| 92 | printf("%s is not yet implemented!\n", __func__);
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| 93 | |||
| 94 | return 1; |
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| 95 | } |
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| 96 | |||
| 97 | int(kbd_test_timed_scan)(uint8_t n) {
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| 98 | /* To be completed by the students */
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| 99 | printf("%s is not yet implemented!\n", __func__);
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| 100 | |||
| 101 | return 1; |
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| 102 | } |