root / lab2 / timer.c @ 8
History | View | Annotate | Download (2.07 KB)
| 1 | 4 | up20180655 | #include <lcom/lcf.h> |
|---|---|---|---|
| 2 | #include <lcom/timer.h> |
||
| 3 | |||
| 4 | #include <stdint.h> |
||
| 5 | |||
| 6 | #include "i8254.h" |
||
| 7 | |||
| 8 | int (timer_set_frequency)(uint8_t timer, uint32_t freq) {
|
||
| 9 | 5 | up20180642 | /* To be implemented by the students */
|
| 10 | printf("%s is not yet implemented!\n", __func__);
|
||
| 11 | 4 | up20180655 | |
| 12 | 5 | up20180642 | return 1; |
| 13 | 4 | up20180655 | } |
| 14 | |||
| 15 | int (timer_subscribe_int)(uint8_t *bit_no) {
|
||
| 16 | /* To be implemented by the students */
|
||
| 17 | 5 | up20180642 | printf("%s is not yet implemented!\n", __func__);
|
| 18 | 4 | up20180655 | |
| 19 | 5 | up20180642 | return 1; |
| 20 | 4 | up20180655 | } |
| 21 | |||
| 22 | int (timer_unsubscribe_int)() {
|
||
| 23 | 5 | up20180642 | /* To be implemented by the students */
|
| 24 | printf("%s is not yet implemented!\n", __func__);
|
||
| 25 | 4 | up20180655 | |
| 26 | 5 | up20180642 | return 1; |
| 27 | 4 | up20180655 | } |
| 28 | |||
| 29 | void (timer_int_handler)() {
|
||
| 30 | 5 | up20180642 | /* To be implemented by the students */
|
| 31 | printf("%s is not yet implemented!\n", __func__);
|
||
| 32 | 4 | up20180655 | } |
| 33 | |||
| 34 | int (timer_get_conf)(uint8_t timer, uint8_t *st) {
|
||
| 35 | 5 | up20180642 | int write_port = TIMER_CTRL;
|
| 36 | u32_t cmd = TIMER_RB_CMD | TIMER_RB_COUNT_ | TIMER_RB_SEL(timer); |
||
| 37 | if(sys_outb(write_port, cmd)) return 1; |
||
| 38 | 4 | up20180655 | |
| 39 | 5 | up20180642 | int read_port;
|
| 40 | 7 | up20180655 | switch(timer) {
|
| 41 | 5 | up20180642 | case 0: read_port = TIMER_0; break; |
| 42 | case 1: read_port = TIMER_1; break; |
||
| 43 | case 2: read_port = TIMER_2; break; |
||
| 44 | 6 | up20180642 | default: return 1; break; |
| 45 | 5 | up20180642 | } |
| 46 | if(util_sys_inb(read_port, st)) return 1; |
||
| 47 | return 0; |
||
| 48 | 4 | up20180655 | } |
| 49 | |||
| 50 | 6 | up20180642 | int (timer_display_conf)(uint8_t timer, uint8_t st, enum timer_status_field field) { |
| 51 | union timer_status_field_val conf;
|
||
| 52 | uint8_t in_mode; |
||
| 53 | if(field == tsf_all || field == tsf_initial){
|
||
| 54 | in_mode = (st & TIMER_INMODE_MASK) >> TIMER_INMODE_POS; |
||
| 55 | switch(in_mode){
|
||
| 56 | case 0: conf.in_mode = INVAL_val ; break; |
||
| 57 | case 1: conf.in_mode = LSB_only ; break; |
||
| 58 | case 2: conf.in_mode = MSB_only ; break; |
||
| 59 | case 3: conf.in_mode = MSB_after_LSB; break; |
||
| 60 | default: return 1; break; |
||
| 61 | } |
||
| 62 | if(timer_print_config(timer, field, conf)) return 1; |
||
| 63 | 5 | up20180642 | } |
| 64 | 8 | up20180642 | if(field == tsf_mode){
|
| 65 | 6 | up20180642 | conf.count_mode = (st & TIMER_MODE_MASK)>>TIMER_MODE_POS; |
| 66 | if(timer_print_config(timer, field, conf)) return 1; |
||
| 67 | } |
||
| 68 | 8 | up20180642 | if(field == tsf_base){
|
| 69 | 6 | up20180642 | conf.bcd = st & TIMER_BCD; |
| 70 | if(timer_print_config(timer, field, conf)) return 1; |
||
| 71 | } |
||
| 72 | return 0; |
||
| 73 | } |