Revision 44
implemented 3rd function. something is wrong
| lab3/Makefile | ||
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| 2 | 2 |
PROG=lab3 |
| 3 | 3 |
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# source code files to be compiled |
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SRCS = lab3.c kbc.c utils.c |
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SRCS = lab3.c kbc_func.c timer_func.c utils.c
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| 6 | 6 |
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# additional compilation flags |
| 8 | 8 |
# "-Wall -Wextra -Werror -I . -std=c11 -Wno-unused-parameter" are already set |
| lab3/kbc_func.h | ||
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| 15 | 15 |
int (subscribe_kbc_interrupt)(uint8_t interrupt_bit, int *interrupt_id); |
| 16 | 16 |
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/** |
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* @brief Unsubcribes KBC Interrupts
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* @param interrupt_id KBC Interrupt ID, value via arguments on subscription of the interrupt_id
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* @see subscribe_kbc_interrupt |
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* @brief Unsubcribes Interrupts |
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* @param interrupt_id Interrupt ID, value via arguments on subscription of the interrupt_id |
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* @see subscribe_kbc_interrupt, subscribe_timer_interrupt
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* @return Whether operation was sucessful or not |
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*/ |
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int (unsubscribe_kbc_interrupt)(int *interrupt_id);
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int (unsubscribe_interrupt)(int *interrupt_id); |
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/** |
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* @brief KBC Interrupt Handler |
| lab3/lab3.c | ||
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| 6 | 6 |
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#include "kbc.h" |
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#include "kbc_func.h" |
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#include "timer_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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extern uint32_t sys_inb_counter; |
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int(kbd_test_scan)() {
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/// loop stuff |
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int ipc_status, r; |
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message msg; |
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/// Keyboard interrupt handling |
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uint8_t kbc_irq_bit = 1; |
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int kbc_id = 0; |
| 46 | 47 |
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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/// cycle |
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int good = 1; |
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while (good) {
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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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| ... | ... | |
| 59 | 58 |
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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if (scancode[0] == TWO_BYTE_CODE) kbd_print_scancode(!(scancode[1] & BREAK_CODE_BIT), 2, scancode); |
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else kbd_print_scancode(!(scancode[0] & BREAK_CODE_BIT), 1, scancode); |
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} else { break; }
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if (scancode[0] == ESC_BREAK_CODE) good = 0; |
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} |
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break; |
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default: |
| ... | ... | |
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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 (unsubscribe_interrupt(&kbc_id)) return 1; |
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if (kbd_print_no_sysinb(sys_inb_counter)) return 1; |
| 90 | 80 |
|
| ... | ... | |
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return 0; |
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} |
| 107 | 97 |
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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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extern int no_interrupts; |
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return 1; |
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int(kbd_test_timed_scan)(uint8_t idle) {
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/// loop stuff |
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int ipc_status, r; |
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message msg; |
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/// Timer interrupt handling |
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const uint32_t frequency = 60; // Frequency asummed at 60Hz |
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uint8_t timer_irq_bit = 0; |
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int timer_id = 0; |
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int timer_irq = BIT(timer_irq_bit); |
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if(subscribe_timer_interrupt(timer_irq_bit, &timer_id)) return 1; |
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no_interrupts = 0; |
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int time = 0; |
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/// Keyboard interrupt handling |
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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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if(subscribe_kbc_interrupt(kbc_irq_bit, &kbc_id)) return 1; |
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/// cycle |
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int good = 1; |
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while (good) {
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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 & timer_irq) { /* subscribed interrupt */
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timer_int_handler(); |
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//printf("no_interrupts: %d\n", no_interrupts);
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if (no_interrupts%frequency == 0) time++; |
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if(time >= idle) good = 0; |
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} |
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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) kbd_print_scancode(!(scancode[1] & BREAK_CODE_BIT), 2, scancode); |
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else kbd_print_scancode(!(scancode[0] & BREAK_CODE_BIT), 1, scancode); |
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time = 0; |
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if (scancode[0] == ESC_BREAK_CODE) good = 0; |
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} |
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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_interrupt(&kbc_id)) return 1; |
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if (unsubscribe_interrupt(&timer_id)) return 1; |
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return 0; |
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| 113 | 157 |
} |
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