---

#include "MDR32Fx.h"
#include "MDR32F9Qx_port.h"
#include "MDR32F9Qx_rst_clk.h"

static PORT_InitTypeDef PortInit;
volatile uint32_t ms_tick = 0;

void SysTick_Handler() {
    ms_tick++;
}

void delay_mss(uint32_t ms) {
    uint32_t start = ms_tick;
    while ((ms_tick - start) < ms);
}

// ??????? ???????? (0x00 - ???????? ??? ?????????? ?? PORTA)
void Blink(int count) {
    for (int i = 0; i < count; i++) {
        PORT_Write(MDR_PORTA, 0x00); // ???????? (????????)
        delay_mss(400);
        PORT_Write(MDR_PORTA, 0xFF); // ?????????
        delay_mss(400);
    }
}

int main () {
    // 1. ???????? ???????????? (??????? PORTB!)
    RST_CLK_PCLKcmd(RST_CLK_PCLK_PORTA | RST_CLK_PCLK_PORTB | RST_CLK_PCLK_PORTC, ENABLE);
    
    // 2. ????????? ??????????? (PORTA - ?????)
    PortInit.PORT_OE = PORT_OE_OUT;
    PortInit.PORT_FUNC = PORT_FUNC_PORT;
    PortInit.PORT_MODE = PORT_MODE_DIGITAL;
    PortInit.PORT_SPEED = PORT_SPEED_SLOW;
    PortInit.PORT_Pin = PORT_Pin_All;
    PORT_Init(MDR_PORTA, &PortInit); 
    
    // 3. ????????? ?????? (PORTB ? PORTC - ????)
    PortInit.PORT_OE = PORT_OE_IN;
    PortInit.PORT_Pin = PORT_Pin_All; 
    PORT_Init(MDR_PORTB, &PortInit); // ?????????? X ? Y ?????
    PORT_Init(MDR_PORTC, &PortInit); // SELECT ?????
    
    // 4. ????????? SysTick
    SysTick->LOAD = (8000000/1000) - 1;
    SysTick->VAL = 0;
    SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk | SysTick_CTRL_ENABLE_Msk;
    
    PORT_Write(MDR_PORTA, 0xFF); // ???????? ???

    float x = 0, y = 0;

    while (1) {
        // ?????????? X (KEY1-KEY4 ?? PORTB ???? 0-3)
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_0) == 0) x = -4.0f;
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_1) == 0) x = -2.0f;
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_2) == 0) x = 2.0f;
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_3) == 0) x = 4.0f;

        // ?????????? Y (KEY5-KEY8 ?? PORTB ???? 4-7)
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_4) == 0) y = -3.0f;
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_5) == 0) y = -1.0f;
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_6) == 0) y = 1.0f;
        if (PORT_ReadInputDataBit(MDR_PORTB, PORT_Pin_7) == 0) y = 3.0f;

        // ??????? SELECT (PORTC ??? 0)
        if (PORT_ReadInputDataBit(MDR_PORTC, PORT_Pin_0) == 0) {
            
            // ???????? ???????? ?8:
            // ??? ????? R=2 ? (2-? ??? 4-? ????????)
            if ( ((x*x + y*y) >= 4.0f) && (x * y <= 0) ) 
            {
                Blink(1); // ?????
            } 
            else 
            {
                Blink(2); // ?? ?????
            }

            // ???? ?????????? ?????? SELECT
            while(PORT_ReadInputDataBit(MDR_PORTC, PORT_Pin_0) == 0);
        }
    }
} // ??? ??? ?????? ????????? main!