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#include "defines.h"
#include "STEPPER.h"
#include "OLED_SSD1306.h"

static STEPPER_MICROSTEP currStep = STEP_1_1;
static STEPPER_SPEED currSpeed = DELAY_1000MS;
static uint8_t autoOn = 0;

void STEPPER_Set_Microstep(STEPPER_MICROSTEP step) {
#ifdef DVR8825
    if (step == STEP_1_1) {
        M0_LAT = 0;
        M1_LAT = 0;
        M2_LAT = 0;
    } else if (step == STEP_1_2) {
        M0_LAT = 1;
        M1_LAT = 0;
        M2_LAT = 0;
    } else if (step == STEP_1_4) {
        M0_LAT = 0;
        M1_LAT = 1;
        M2_LAT = 0;
    } else if (step == STEP_1_8) {
        M0_LAT = 1;
        M1_LAT = 1;
        M2_LAT = 0;
    } else if (step == STEP_1_16) {
        M0_LAT = 0;
        M1_LAT = 0;
        M2_LAT = 1;
    } else if (step == STEP_1_32) {
        M0_LAT = 1;
        M1_LAT = 0;
        M2_LAT = 1;
    }
#endif
}

void STEPPER_Set_Next_Step() {
    switch (currStep) {
        case STEP_1_1:
            currStep = STEP_1_2;
            break;
        case STEP_1_2:
            currStep = STEP_1_4;
            break;
        case STEP_1_4:
            currStep = STEP_1_8;
            break;
        case STEP_1_8:
            currStep = STEP_1_16;
            break;
        case STEP_1_16:
            currStep = STEP_1_32;
            break;
        case STEP_1_32:
        default:
            currStep = STEP_1_1;
            break;
    }
    STEPPER_Set_Microstep(currStep);
}

STEPPER_MICROSTEP STEPPER_Get_Cur_Step(void) {
    return currStep;
}

void STEPPER_Set_Next_Delay() {
    switch (currSpeed) {
        default:
        case DELAY_1000MS:
            currSpeed = DELAY_500MS;
            break;
        case DELAY_500MS:
            currSpeed = DELAY_333MS;
            break;
        case DELAY_333MS:
            currSpeed = DELAY_250MS;
            break;
        case DELAY_250MS:
            currSpeed = DELAY_100MS;
            break;
        case DELAY_100MS:
            currSpeed = DELAY_50MS;
            break;
        case DELAY_50MS:
            currSpeed = DELAY_25MS;
            break;
        case DELAY_25MS:
            currSpeed = DELAY_10MS;
            break;
        case DELAY_10MS:
            currSpeed = DELAY_5MS;
            break;
        case DELAY_5MS:
            currSpeed = DELAY_1MS;
            break;
        case DELAY_1MS:
            currSpeed = DELAY_1000MS;
            break;
    }
}

STEPPER_SPEED STEPPER_Get_Cur_Speed(void) {
    return currSpeed;
}

void STEPPER_Toggle_Auto() {
    if (autoOn == 0) {
        autoOn = 1;
    } else {
        autoOn = 0;
    }
}

STEPPER_SPEED STEPPER_Get_Auto() {
    if (autoOn == 0) {
        return DELAY_STOPPED;
    } else {
        return currSpeed;
    }
}

void STEPPER_Step() {
    STEP_LAT = 1;
    __delay_us(2);
    STEP_LAT = 0;
}