#include "device_driver.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>

void Uart1_Init(int baud)
{
	double div;
	unsigned int mant;
	unsigned int frac;

	Macro_Set_Bit(RCC->APB2ENR, 2);
	Macro_Set_Bit(RCC->APB2ENR, 14);
	Macro_Write_Block(GPIOA->CRH, 0xff, 0x8a, 4);
	Macro_Set_Bit(GPIOA->ODR, 10);

	div = PCLK2/(16. * baud);
	mant = (int)div;
	frac = (int)((div - mant) * 16. + 0.5);
	mant += frac >> 4;
	frac &= 0xf;

	USART1->BRR = (mant<<4)+(frac<<0);
	USART1->CR1 = (1<<13)|(0<<12)|(0<<10)|(1<<3)|(1<<2);
	USART1->CR2 = 0<<12;
	USART1->CR3 = 0;
}

void Uart1_Send_Byte(char data)
{
	if(data=='\n')
	{
		while(Macro_Check_Bit_Clear(USART1->SR, 7));
		USART1->DR = 0x0d;
	}

	while(Macro_Check_Bit_Clear(USART1->SR, 7));
	USART1->DR = data;
}

void Uart1_Send_String(char *pt)
{
	while(*pt!=0)
	{
		Uart1_Send_Byte(*pt++);
	}
}

void Uart1_Printf(char *fmt,...)
{
	va_list ap;
	char string[256];

	va_start(ap,fmt);
	vsprintf(string,fmt,ap);
	Uart1_Send_String(string);
	va_end(ap);
}

char Uart1_Get_Pressed(void)
{
	// 글자가 입력이 되었으면 입력된 글자를 리턴

	// 글자 입력이 없으면 0 리턴

}

char Uart1_Get_Char(void)
{
	// 글자 입력이 없으면 무한 대기, 글자가 들어오면 받은 글자 리턴


}

#include "device_driver.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>

void Uart1_Init(int baud)
{
	double div;
	unsigned int mant;
	unsigned int frac;

	Macro_Set_Bit(RCC->APB2ENR, 2);
	Macro_Set_Bit(RCC->APB2ENR, 14);
	Macro_Write_Block(GPIOA->CRH, 0xff, 0x8a, 4);
	Macro_Set_Bit(GPIOA->ODR, 10);

	div = PCLK2/(16. * baud);
	mant = (int)div;
	frac = (int)((div - mant) * 16. + 0.5);
	mant += frac >> 4;
	frac &= 0xf;

	USART1->BRR = (mant<<4)+(frac<<0);
	USART1->CR1 = (1<<13)|(0<<12)|(0<<10)|(1<<3)|(1<<2);
	USART1->CR2 = 0<<12;
	USART1->CR3 = 0;
}

void Uart1_Send_Byte(char data)
{
	if(data=='\n')
	{
		while(Macro_Check_Bit_Clear(USART1->SR, 7));
		USART1->DR = 0x0d;
	}

	while(Macro_Check_Bit_Clear(USART1->SR, 7));
	USART1->DR = data;
}

void Uart1_Send_String(char *pt)
{
	while(*pt!=0)
	{
		Uart1_Send_Byte(*pt++);
	}
}

void Uart1_Printf(char *fmt,...)
{
	va_list ap;
	char string[256];

	va_start(ap,fmt);
	vsprintf(string,fmt,ap);
	Uart1_Send_String(string);
	va_end(ap);
}

char Uart1_Get_Pressed(void)
{
	if(Macro_Check_Bit_Set(USART1->SR, 5))
	{
		return (char)USART1->DR;
	}

	else
	{
		return (char)0;
	}
}

char Uart1_Get_Char(void)
{
	char rx;

	while((rx = Uart1_Get_Pressed()) == 0);

	return rx;
}