LCOM1920-T5G03

SRCS= proj.c graphics.c kbc.c keyboard.c mouse.c utils.c timer.c

#include <lcom/lcf.h>

#include "mouse.h"

#include "errors.h"

#include "kbc_macros.h"

#include "mouse_macros.h"

#include "kbc.h"

int (subscribe_mouse_interrupt)(uint8_t interrupt_bit, int *interrupt_id) {

    if (interrupt_id == NULL) return NULL_PTR;

    *interrupt_id = interrupt_bit;

    if (sys_irqsetpolicy(MOUSE_IRQ, IRQ_REENABLE | IRQ_EXCLUSIVE, interrupt_id)) return SBCR_ERROR;

    return SUCCESS;

}

int got_error_mouse_ih = 0;

int counter_mouse_ih = 0;

void (mouse_ih)(void) {

    uint8_t status = 0;

    got_error_mouse_ih = 0;

    if(counter_mouse_ih >= 3) counter_mouse_ih = 0;

    if ((got_error_mouse_ih = util_sys_inb(STATUS_REG, &status))) return;

    if (status & (TIME_OUT_REC | PARITY_ERROR)) {

        got_error_mouse_ih = OTHER_ERROR;

        return;

    }

    if (((status & AUX_MOUSE) == 0) || ((status & OUT_BUF_FUL) == 0)) {

        got_error_mouse_ih = READ_ERROR;

        return;

    }

    uint8_t byte = 0;

    if ((got_error_mouse_ih = util_sys_inb(OUTPUT_BUF, &byte))) return;

    /// This does not run if: I was expecting the first one but what I get is definitely not the first byte

    if((byte & FIRST_BYTE_ID)  || counter_mouse_ih){

        packet_mouse_ih[counter_mouse_ih++] = byte;

    }

}

struct packet (mouse_parse_packet)(const uint8_t *packet_bytes){

    struct packet pp;

    pp.bytes[0] = packet_bytes[0];

    pp.bytes[1] = packet_bytes[1];

    pp.bytes[2] = packet_bytes[2];

    pp.rb       = pp.bytes[0] & RIGHT_BUTTON;

    pp.mb       = pp.bytes[0] & MIDDLE_BUTTON;

    pp.lb       = pp.bytes[0] & LEFT_BUTTON;

    pp.delta_x  = sign_extend_byte((packet_bytes[0] & MSB_X_DELTA) != 0, pp.bytes[1]);

    pp.delta_y  = sign_extend_byte((packet_bytes[0] & MSB_Y_DELTA) != 0, pp.bytes[2]);

    pp.x_ov     = pp.bytes[0] & X_OVERFLOW;

    pp.y_ov     = pp.bytes[0] & Y_OVERFLOW;

    return pp;

}

int mouse_poll(struct packet *pp, uint16_t period){

    int ret = 0;

    uint8_t packet[3];

    uint8_t byte;

    if ((ret = mouse_issue_cmd(READ_DATA))) return ret;

    for(unsigned i = 0; i < 3; ++i){

        if((ret = mouse_poll_byte(&byte, period))) return ret;

        packet[i] = byte;

    }

    *pp = mouse_parse_packet(packet);

    return SUCCESS;

}

int (mouse_set_data_report)(int on){

    if(on) return mouse_issue_cmd(ENABLE_DATA_REP);

    else   return mouse_issue_cmd(   DIS_DATA_REP);

}

int (mouse_read_data)(uint8_t *data, uint16_t period) {

    int ret;

    if ((ret = mouse_issue_cmd(READ_DATA))) return ret;

    if ((ret = mouse_poll_byte(data, period))) return ret;

    return SUCCESS;

}

int (mouse_issue_cmd)(uint32_t cmd) {

    int ret;

    uint8_t ack = 0;

    for (unsigned int i = 0; i < KBC_NUM_TRIES; i++) {

        if ((ret = kbc_issue_cmd(MOUSE_WRITE_B))) return ret;

        if ((ret = kbc_issue_arg(cmd))) return ret;

        if ((ret = mouse_read_byte(&ack))) return ret;

        if (ack == ACK_OK) return SUCCESS;

        if (ack == ACK_ERROR) return INVALID_COMMAND;

        tickdelay(micros_to_ticks(DELAY));

    }

    return TIMEOUT_ERROR;

}

int (mouse_read_byte)(uint8_t *byte) {

    int ret = 0;

    uint8_t stat;

    for(int i = 0; i < KBC_NUM_TRIES; ++i){

        if((ret = util_sys_inb(STATUS_REG, &stat))) return ret;

        if((stat&OUT_BUF_FUL) && (stat&AUX_MOUSE)) {

            if(stat & (PARITY_ERROR | TIME_OUT_REC)) return OTHER_ERROR;

            if((ret = util_sys_inb(OUTPUT_BUF, byte))) return ret;

            else return SUCCESS;

        }

        tickdelay(micros_to_ticks(DELAY));

    }

    return TIMEOUT_ERROR;

}

int (mouse_poll_byte)(uint8_t *byte, uint16_t period) {

    int ret = 0;

    uint8_t stat;

    while(true){

        if((ret = util_sys_inb(STATUS_REG, &stat))) return ret;

        if((stat&OUT_BUF_FUL) && (stat&AUX_MOUSE)) {

            if(stat & (PARITY_ERROR | TIME_OUT_REC)) return OTHER_ERROR;

            if((ret = util_sys_inb(OUTPUT_BUF, byte))) return ret;

            else return SUCCESS;

        }

        tickdelay(micros_to_ticks(DELAY));

    }

}

int16_t (sign_extend_byte)(uint8_t sign_bit, uint8_t byte) {

    return (int16_t)(((0xFF * sign_bit)<<8) | byte);

}

#ifndef MOUSE_H_INCLUDED

#define MOUSE_H_INCLUDED

#include <stdint.h>

/**

 * @brief Subscribes Mouse Interrupts and disables Minix Default IH

 * @param interrupt_bit Bit of Interrupt Vector that will be set when Mouse Interrupt is pending

 * @param interrupt_id Mouse Interrupt ID to specify the Mouse Interrupt in other calls

 * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 * @see {_ERRORS_H_::errors}

 */

int (subscribe_mouse_interrupt)(uint8_t interrupt_bit, int *interrupt_id);

//These have to do with mouse_ih

int got_error_mouse_ih;

uint8_t packet_mouse_ih[3];

int counter_mouse_ih;

/**

 * @brief   Parse 3 bytes and returns it as a parsed, struct packet.

 * @param   packet_bytes    array of bytes to parse

 * @return  parsed struct packet

 */

struct packet (mouse_parse_packet)(const uint8_t *packet_bytes);

/**

 * @brief Polls mouse for data. Blocks execution until a valid mouse packet is obtained.

 * @param   pp      pointer to packet struct in which the result will be stored

 * @param   period  time (in milliseconds) the poller should wait between pollings of bytes

 * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 */

int mouse_poll(struct packet *pp, uint16_t period);

/**

 * @brief Sets data report mode for mouse

 * @param   on  zero to disable data report, any other value to enable data report

 * @return  ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 */

int (mouse_set_data_report)(int on);

/**

 * @brief Reads data byte from mouse

 * <summary>

 * Polls the mouse till data is available for reading

 * </summary>

 * @param data Pointer to variable where byte read from mouse will be stored

 * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 * @see {_ERRORS_H_::errors}

 */

int (mouse_read_data)(uint8_t *data, uint16_t period);

/**

 * @brief Issues command to mouse

 * <summary>

 * Issues command to mouse, returns error after two consecutive errors reported by the acknowledgment byte

 * </summary>

 * @param cmd Command to be issued

 * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 * @see {_ERRORS_H_::errors}

 */

int (mouse_issue_cmd)(uint32_t cmd);

/**

 * @brief Reads byte from mouse

 * <summary>

 * Reads byte from mouse, giving error if exceeds number of tries to read

 * </summary>

 * @param byte Pointer to variable where byte read from mouse will be stored

 * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 * @see {_ERRORS_H_::errors}

 */

int (mouse_read_byte)(uint8_t *byte);

/**

 * @brief Polls OUT_BUF for byte coming from mouse.

 * @param   byte    pointer to byte read from OUT_BUF

 * @param   period  time (in milliseconds) the poller should wait between pollings of bytes

 * @return ERROR_CODE code representing the result of the operation, SUCCESS code is returned if everything is OK

 */

int (mouse_poll_byte)(uint8_t *byte, uint16_t period);

/**

 * @brief Converts 9-bit number to 16-bit with sign extension

 * @param sign_bit  Sign bit identifiying the signal of the number

 * @param byte      Least significant byte that will be extended

 * @return Extended 9-bit number

 */

int16_t (sign_extend_byte)(uint8_t sign_bit, uint8_t byte);

#endif //MOUSE_H_INCLUDED

#ifndef MOUSE_MACROS_H_INCLUDED

#define MOUSE_MACROS_H_INCLUDED

/* Mouse Data Packet */

// Byte 0 - Button States

#define LEFT_BUTTON     BIT(0) /* @brief Left button click event*/

#define RIGHT_BUTTON    BIT(1) /* @brief Right button click event */

#define MIDDLE_BUTTON   BIT(2) /* @brief Middle button click event */

#define FIRST_BYTE_ID   BIT(3) /* @brief Identifier of first byte of packet CAREFUL: Not 100% accurate */

#define MSB_X_DELTA     BIT(4) /* @brief Most significant bit of X delta */

#define MSB_Y_DELTA     BIT(5) /* @brief Most significant bit of Y delta */

#define X_OVERFLOW      BIT(6) /* @brief X delta overflowed */

#define Y_OVERFLOW      BIT(7) /* @brief Y delta overflowed */

// Byte 1 - X delta

// Byte 2 - Y delta

/* Mouse Commands */

#define RESET           0xFF /* @brief Reset mouse */

#define RESEND          0xFE /* @brief Resend command */

#define DEFAULT         0xF6 /* @brief Set default values */

#define DIS_DATA_REP    0xF5 /* @brief Disable Data Reporting */

#define ENABLE_DATA_REP 0xF4 /* @brief Enable Data Reporting */

#define SET_SAMPLE_RT   0xF3 /* @brief Sets state sampling rate */

#define SET_REMOTE_MD   0xF0 /* @brief Sets Mouse on Remote Mode, data on request */

#define READ_DATA       0xEB /* @brief Sends data packet request */

#define SET_STREAM_MD   0xEA /* @brief Sets mouse on Stream Mode, data on events */

#define STATUS_REQUEST  0xE9 /* @brief Get mouse configuration */

#define SET_RESOLUTION  0xE8 /* @brief Sets resolution for mouse movement */

#define SCALING_ACC_MD  0xE7 /* @brief Sets scaling on acceleration mode */

#define SCALING_LIN_MD  0xE6 /* @brief Sets scaling on linear mode */

/* Mouse Controller Responses */

#define ACK_OK      0xFA /* @brief Operation sucessful */

#define ACK_INVALID 0xFE /* @brief Invalid Byte, first occurence */

#define ACK_ERROR   0xFC /* @brief Invalid Byte on resend */

#endif // MOUSE_MACROS_H_INCLUDED

#include "mouse_macros.h"

#include "mouse.h"

    /// Mouse interrupt handling

    uint8_t mouse_irq_bit = MOUSE_IRQ;

    int mouse_id = 0;

    int mouse_irq = BIT(mouse_irq_bit);

    if (subscribe_mouse_interrupt(mouse_irq_bit, &mouse_id)) return 1; // subscribes mouse interrupts in exclusive mode

    if (sys_irqdisable(&mouse_id)) return 1; // temporarily disables our interrupts notifications

    if (mouse_set_data_report(true)) return 1; // enables mouse data reporting

    if (sys_irqenable(&mouse_id)) return 1; // re-enables our interrupts notifications

                    if (msg.m_notify.interrupts & mouse_irq) { /* subscribed interrupt */

                        mouse_ih();

                    }

    // Unsubscribe Mouse Interrupts

    if (sys_irqdisable(&mouse_id)) return 1; // temporarily disables our interrupts notifications

    if (mouse_set_data_report(false)) return 1; // enables mouse data reporting

    if (sys_irqenable(&mouse_id)) return 1; // re-enables our interrupts notifications

    if (unsubscribe_interrupt(&mouse_id)) return 1; // unsubscribes interrupts