root / lab3 / lab3.c @ 43
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#include <lcom/lcf.h> |
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#include <lcom/lab3.h> |
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#include <stdbool.h> |
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#include <stdint.h> |
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#include "kbc.h" |
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#include "kbc_func.h" |
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int main(int argc, char *argv[]) { |
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// sets the language of LCF messages (can be either EN-US or PT-PT)
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lcf_set_language("EN-US");
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// enables to log function invocations that are being "wrapped" by LCF
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// [comment this out if you don't want/need it]
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lcf_trace_calls("/home/lcom/labs/lab3/trace.txt");
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// enables to save the output of printf function calls on a file
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// [comment this out if you don't want/need it]
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lcf_log_output("/home/lcom/labs/lab3/output.txt");
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// handles control over to LCF
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// [LCF handles command line arguments and invokes the right function]
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if (lcf_start(argc, argv))
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return 1; |
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// LCF clean up tasks
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// [must be the last statement before return]
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lcf_cleanup(); |
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return 0; |
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} |
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extern uint8_t scancode[2]; |
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extern int two_byte_scancode; |
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extern int got_error; |
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extern uint32_t sys_inb_counter;
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int(kbd_test_scan)() {
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int ipc_status, r;
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message msg; |
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uint8_t kbc_irq_bit = 1;
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int kbc_id = 0; |
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int kbc_irq = BIT(kbc_irq_bit);
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int got_esc_breakcode = 0; |
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if (subscribe_kbc_interrupt(kbc_irq_bit, &kbc_id)) return 1; |
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while (!got_esc_breakcode) {
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/* Get a request message. */
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if ((r = driver_receive(ANY, &msg, &ipc_status)) != 0) { |
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printf("driver_receive failed with %d", r);
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continue;
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} |
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if (is_ipc_notify(ipc_status)) { /* received notification */ |
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switch (_ENDPOINT_P(msg.m_source)) {
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case HARDWARE: /* hardware interrupt notification */ |
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if (msg.m_notify.interrupts & kbc_irq) { /* subscribed interrupt */ |
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kbc_ih(); |
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if (!(two_byte_scancode || got_error)) { /* finished processing a scancode */ |
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if (scancode[0] == TWO_BYTE_CODE) |
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kbd_print_scancode(!(scancode[1] & BREAK_CODE_BIT), 2, scancode); |
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else
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kbd_print_scancode(!(scancode[0] & BREAK_CODE_BIT), 1, scancode); |
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} else {
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break;
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} |
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if (scancode[0] == ESC_BREAK_CODE) |
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got_esc_breakcode = 1;
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} |
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break;
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default:
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break; /* no other notifications expected: do nothing */ |
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} |
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} else { /* received standart message, not a notification */ |
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/* no standart message expected: do nothing */
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} |
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} |
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if (unsubscribe_kbc_interrupt(&kbc_id)) return 1; |
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if (kbd_print_no_sysinb(sys_inb_counter)) return 1; |
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return 0; |
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} |
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int(kbd_test_poll)() {
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uint8_t c[2]; uint8_t size;
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do{
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if(kbd_poll(c, &size)) return 1; |
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if(kbd_print_scancode((~c[0])&BREAK_CODE_BIT, size, c)) return 1; |
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}while(!(size == 1 && c[0] == ESC_BREAK_CODE)); |
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if(kbc_restore_kbd()) return 1; |
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if(kbd_print_no_sysinb(sys_inb_counter)) return 1; |
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return 0; |
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} |
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int(kbd_test_timed_scan)(uint8_t n) {
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/* To be completed by the students */
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printf("%s is not yet implemented!\n", __func__);
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return 1; |
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} |