Микропроцессорные средства и системы / lab4 / GccApplication1 / GccApplication1 / main

/*
 * GccApplication1.cpp
 *
 * Created: 12/27/2021 5:13:37 PM
 * Author : SEIDALIEV
 */ 

#define F_CPU 1000000UL
#include <avr/io.h>
#include <avr/eeprom.h>
#include <util/delay.h>
#include <avr/pgmspace.h>
#define PIN_SCE   PD7
#define PIN_RESET PD6
#define PIN_DC    PD5
#define PIN_SDIN  PD4
#define PIN_SCLK  PD3
#define LCD_C     0x00
#define LCD_D     0x01
#define LCD_X     84
#define LCD_Y     48
#define PORT_PCD8544 PORTD
#define DDR_PCD8544  DDRD


void pcd8544_init(void);
void pcd8544_send(uint8_t dc, uint8_t data);
void pcd8544_clear(void);
void pcd8544_set_cursor(uint8_t x, uint8_t y);
void drawRhomb(uint8_t x, uint8_t y, uint8_t height);

#define FB_LEN  504
static uint8_t fb[FB_LEN];
uint16_t pos;

void pcd8544_display_fb() {
	int i;
	for(i=0;i<FB_LEN; i++)
	pcd8544_send(LCD_D,fb[i]);
}

void pcd8544_clear_fb(void)
{
	for(pos=0;pos<FB_LEN; pos++)
	fb[pos]=0;
	pos=0;
}


void pcd8544_set_point(uint8_t x, uint8_t y) {
	if (x < LCD_X && y < LCD_Y)
	{
		uint16_t index = ((y>>3)*LCD_X)+x;
		fb[index]|=(1<<(y&0x07));
	}
}



int main(void)
{
	pcd8544_init();
	pcd8544_clear();
	
	int xStart = 25, yStart = 25, sizeW =15;
	
	eeprom_write_byte(1, xStart);
	eeprom_write_byte(10, yStart);
	eeprom_write_byte(15, sizeW);
	
	int x = eeprom_read_byte(1);
	int y = eeprom_read_byte(10);
	int size = eeprom_read_byte(20);
	

	drawRhomb(x, y, size);
	pcd8544_display_fb();

}

void pcd8544_init(void)
{
	// GPIO Setup
	DDR_PCD8544 |= (1<<PIN_SCE) | (1<<PIN_RESET) | (1<<PIN_DC) | (1<<PIN_SDIN) | (1<<PIN_SCLK);
	PORT_PCD8544&=~(1<<PIN_RESET);
	PORT_PCD8544|=(1<<PIN_RESET);
	pcd8544_send(LCD_C, 0x21 );  // LCD Extended Commands.
	pcd8544_send(LCD_C, 0xBA );  // Set LCD Vop (Contrast).
	pcd8544_send(LCD_C, 0x04 );  // Set Temp coefficent. //0x04
	pcd8544_send(LCD_C, 0x14 );  // LCD bias mode 1:48. //0x13
	pcd8544_send(LCD_C, 0x20 );  // LCD Basic Commands
	pcd8544_send(LCD_C, 0x0C );  // LCD in normal mode.
}

void pcd8544_send(uint8_t dc, uint8_t data)
{
	uint8_t i;
	if (dc == LCD_D)
	PORT_PCD8544 |= (1<<PIN_DC);
	else
	PORT_PCD8544 &= ~(1<<PIN_DC);

	PORT_PCD8544&=~(1<<PIN_SCE);
	for (i=0; i<8; i++)
	{
		PORT_PCD8544=(data & 0x80) ? PORT_PCD8544 | (1<<PIN_SDIN) : PORT_PCD8544 & ~(1<<PIN_SDIN);

		data=(data<<1);

		PORT_PCD8544|=(1<<PIN_SCLK);
		PORT_PCD8544&=~(1<<PIN_SCLK);
	}
	PORT_PCD8544|=(1<<PIN_SCE);
}

void pcd8544_print_string(char *str)
{
	while (*str)
	{
		pcd8544_send (char(*str++));
	}
}

void pcd8544_clear(void)
{
	int i;
	for (i=0; i < LCD_X * LCD_Y / 8; i++)
	{
		pcd8544_send(LCD_D, 0x00);
	}
}

void pcd8544_set_cursor(uint8_t x, uint8_t y) {
	x=x%12; y=y%6;
	pcd8544_send(LCD_C, 0x40+y);
	pcd8544_send(LCD_C, 0x80+x*7);
}


void drawRhomb(uint8_t x, uint8_t y, uint8_t height) {

	
	for (int i = 0; i < height; i++) {
		pcd8544_set_point(x + i, y + i);
	}
	
	for (int i = 0; i < height; i++) {
		pcd8544_set_point(x + i, y - i);
	}
	
	x += (height * 2) - 1;
	
	for (int i = 0; i < height; i++) {
		pcd8544_set_point(x - i, y - i);
	}
	
	for (int i = 0; i < height; i++) {
		pcd8544_set_point(x - i, y + i);
	}
	
}