root / lab4 / mouse.c @ 62
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1 | 59 | up20180642 | #include <lcom/lcf.h> |
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2 | |||
3 | #include "mouse.h" |
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4 | |||
5 | #include "errors.h" |
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6 | #include "kbc_macros.h" |
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7 | #include "mouse_macros.h" |
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8 | #include "kbc.h" |
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9 | |||
10 | int (subscribe_mouse_interrupt)(uint8_t interrupt_bit, int *interrupt_id) { |
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11 | if (interrupt_id == NULL) return NULL_PTR; |
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12 | *interrupt_id = interrupt_bit; |
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13 | if (sys_irqsetpolicy(MOUSE_IRQ, IRQ_REENABLE | IRQ_EXCLUSIVE, interrupt_id)) return SBCR_ERROR; |
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14 | return SUCCESS;
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15 | } |
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16 | |||
17 | int got_error_mouse_ih = 0; |
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18 | uint8_t packet[3];
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19 | int counter = 0; |
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20 | |||
21 | void (mouse_ih)(void) { |
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22 | uint8_t status = 0;
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23 | got_error_mouse_ih = 0;
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24 | if(counter >= 3) counter = 0; |
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25 | |||
26 | if (util_sys_inb(STATUS_REG, &status)) {
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27 | got_error_mouse_ih = 1;
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28 | return;
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29 | } |
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30 | |||
31 | if (status & (TIME_OUT_REC | PARITY_ERROR)) {
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32 | got_error_mouse_ih = 1;
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33 | return;
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34 | } |
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35 | |||
36 | uint8_t byte = 0;
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37 | |||
38 | if (util_sys_inb(OUTPUT_BUF, &byte)) {
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39 | got_error_mouse_ih = 1;
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40 | return;
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41 | } |
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42 | |||
43 | /// This does not run if: I was expecting the first one but what I get is definitely not the first byte
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44 | if((byte & FIRST_BYTE_ID) || counter){
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45 | packet[counter] = byte; |
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46 | counter++; |
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47 | } |
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48 | } |
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49 | |||
50 | struct packet (mouse_parse_packet)(const uint8_t *packet_bytes){ |
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51 | struct packet pp;
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52 | pp.bytes[0] = packet_bytes[0]; |
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53 | pp.bytes[1] = packet_bytes[1]; |
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54 | pp.bytes[2] = packet_bytes[2]; |
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55 | pp.rb = pp.bytes[0] & RIGHT_BUTTON;
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56 | pp.mb = pp.bytes[0] & MIDDLE_BUTTON;
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57 | pp.lb = pp.bytes[0] & LEFT_BUTTON;
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58 | pp.delta_x = pp.bytes[1];
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59 | pp.delta_y = pp.bytes[2];
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60 | pp.x_ov = pp.bytes[0] & X_OVERFLOW;
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61 | pp.y_ov = pp.bytes[0] & Y_OVERFLOW;
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62 | return pp;
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63 | } |
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64 | |||
65 | int (mouse_set_data_report)(int on){ |
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66 | int ret = 0; |
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67 | if((ret = kbc_issue_cmd(MOUSE_WRITE_B))) return ret; |
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68 | if(sys_outb(KBC_CMD_ARG, DIS_DATA_REP)) return WRITE_ERROR; |
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69 | return SUCCESS;
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70 | } |