Revision 11
Added function 5.2, must check for errors
| lab3.c | ||
|---|---|---|
| 45 | 45 |
return 1; |
| 46 | 46 |
} |
| 47 | 47 |
|
| 48 |
while(scan_code!=ESC_BREAK){ //looping until scann_code is the breakcode of ESC key
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| 48 |
while(scan_code!=ESC_BREAK){ //looping until scan_code is the breakcode of ESC key
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| 49 | 49 |
if ((r = driver_receive(ANY, &msg, &ipc_status))==1){
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| 50 | 50 |
printf("driver_receive failed with: %d",r);
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| 51 | 51 |
continue; |
| 52 | 52 |
} |
| 53 | 53 |
if (is_ipc_notify(ipc_status)){ //received notification
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| 54 | 54 |
switch (_ENDPOINT_P(msg.m_source)){
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case HARDWARE: //hardware interrupt notification
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case HARDWARE: //hardware interrupt notification |
|
| 56 | 56 |
if (msg.m_notify.interrupts &keyboard_irq){ // subscribed interrupt
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| 57 | 57 |
|
| 58 | 58 |
kbc_ih(); |
| ... | ... | |
| 72 | 72 |
else {
|
| 73 | 73 |
make = true; //make code |
| 74 | 74 |
} |
| 75 |
kbd_print_scancode(make, size, bytes); //prints the code |
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if(kbd_print_scancode(make, size, bytes)!=0){ //prints the code
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printf("Error printing scan code\n");
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return 1; |
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} |
|
| 76 | 80 |
} |
| 77 | 81 |
break; |
| 78 | 82 |
default: |
| ... | ... | |
| 89 | 93 |
return 1; |
| 90 | 94 |
} |
| 91 | 95 |
|
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kbd_print_no_sysinb(cnt); |
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if(kbd_print_no_sysinb(cnt)!=0){
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printf("Error printing number of sys used\n");
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return 1; |
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} |
|
| 93 | 100 |
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cnt=0; |
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scan_code=0; |
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| 94 | 104 |
return 0; |
| 95 | 105 |
} |
| 96 | 106 |
|
| 97 | 107 |
int(kbd_test_poll)() {
|
| 98 |
/* To be completed by the students */
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printf("%s is not yet implemented!\n", __func__);
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uint8_t status, size, bytes[2]; //size of scancode can be 2 byte long
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bool make=false; //to check if code is make or break
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| 100 | 110 |
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return 1; |
|
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while(scan_code!=ESC_BREAK){ //looping until scan_code is the breakcode of ESC key, can't do interruptions
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if(util_sys_inb(STATUS_REG, &status)!=0){ //checks the status register
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printf("Error reading status register\n");
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return 1; |
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} |
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if ((status & STAT_REG_OBF) && !(status & STAT_REG_AUX) && !(status & STAT_REG_PAR || status & STAT_REG_TIMEOUT)) { //checks if there is no parity ot timeout error, if the output buffer is full and if there is mouse data
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if(util_sys_inb(OUTPUT_BUF, &scan_code)!=0){
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printf("Error reading output buffer\n");
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return 1; |
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} |
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|
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bytes[0]=scan_code; |
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bytes[1]=scan_code; |
|
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if(bytes[0]==TWO_BYTE_SCANCODE){
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size=2; |
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} |
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else{
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size=1; |
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} |
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|
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if (scan_code & MAKE_CODE){ //checks if code is make or break
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make = false; //break code |
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} |
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else {
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make = true; //make code |
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} |
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if(kbd_print_scancode(make, size, bytes)!=0){ //prints the code
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printf("Error printing scan code\n");
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return 1; |
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} |
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} |
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else { //if the output buffer is not full wait
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tickdelay(micros_to_ticks(DELAY_US)); //makes keyboard respond to a command in 20 ms |
|
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} |
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} |
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|
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if(kbd_print_no_sysinb(cnt)!=0){
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printf("Error printing number of sys used\n");
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return 1; |
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} |
|
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if(enable_interrupt()!=0){
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printf("Coulnd re-enable the interruptions\n");
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return 1; |
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} |
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cnt=0; |
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scan_code=0; |
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return 0; |
|
| 102 | 166 |
} |
| 103 | 167 |
|
| 104 | 168 |
int(kbd_test_timed_scan)(uint8_t n) {
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