#include "stm32f10x.h"
#include "fsmc_sram.h"
#include "grlib/grlib.h"
#include "touchstreen.h"

#include "usart.h"
#include "misc.h"
#include "stdarg.h"
#include "lcdhal.h"

void USART_Config(USART_TypeDef* USARTx)
{
	USART_InitTypeDef USART_InitStructure;
  USART_InitStructure.USART_BaudRate = 115200;						//速率115200bps
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;		//數據位8位
  USART_InitStructure.USART_StopBits = USART_StopBits_1;			//停止位1位
  USART_InitStructure.USART_Parity = USART_Parity_No;				//無校驗位
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;   //無硬件流控
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;					//收發模式

  /* Configure USART1 */
  USART_Init(USARTx, &USART_InitStructure);							//配置串口參數函數
 
  
  /* Enable USART1 Receive and Transmit interrupts */
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);                    //使能接收中斷
  USART_ITConfig(USART1, USART_IT_TXE, ENABLE);						//使能發送緩沖空中斷   

  /* Enable the USART1 */
  USART_Cmd(USART1, ENABLE);	
}
/****************************************************************************
* 名    稱：void USART_OUT(USART_TypeDef* USARTx, uint8_t *Data,...)
* 功    能：格式化串口輸出函數
* 入口參數：USARTx:  指定串口
			Data：   發送數組
			...:     不定參數
* 出口參數：無
* 說    明：格式化串口輸出函數
        	"\r"	回車符	   USART_OUT(USART1, "abcdefg\r")   
			"\n"	換行符	   USART_OUT(USART1, "abcdefg\r\n")
			"%s"	字符串	   USART_OUT(USART1, "字符串是：%s","abcdefg")
			"%d"	十進制	   USART_OUT(USART1, "a=%d",10)
* 調用方法：無 
****************************************************************************/
void USART_OUT(USART_TypeDef* USARTx, uint8_t *Data,...)
{ 
	const char *s;
    int d;
    char buf[16];
    va_list ap;
    va_start(ap, Data);

	while(*Data!=0){				                          //判斷是否到達字符串結束符
		if(*Data==0x5c){									  //'\'
			switch (*++Data){
				case 'r':							          //回車符
					USART_SendData(USARTx, 0x0d);	   

					Data++;
					break;
				case 'n':							          //換行符
					USART_SendData(USARTx, 0x0a);	
					Data++;
					break;
				
				default:
					Data++;
				    break;
			}
			
			 
		}
		else if(*Data=='%'){									  //
			switch (*++Data){				
				case 's':										  //字符串
                	s = va_arg(ap, const char *);
                	for ( ; *s; s++) {
                    	USART_SendData(USARTx,*s);
						while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET);
                	}
					Data++;
                	break;
            	case 'd':										  //十進制
                	d = va_arg(ap, int);
                	itoa(d, buf, 10);
                	for (s = buf; *s; s++) {
                    	USART_SendData(USARTx,*s);
						while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET);
                	}
					Data++;
                	break;
				default:
					Data++;
				    break;
			}		 
		}
		else USART_SendData(USARTx, *Data++);
		while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET);
	}
}

/******************************************************
		整形數據轉字符串函數
        char *itoa(int value, char *string, int radix)
		radix=10 標示是10進制	非十進制，轉換結果為0;  

	    例：d=-379;
		執行	itoa(d, buf, 10); 后
		
		buf="-379"							   			  
**********************************************************/
char *itoa(int value, char *string, int radix)
{
    int     i, d;
    int     flag = 0;
    char    *ptr = string;

    /* This implementation only works for decimal numbers. */
    if (radix != 10)
    {
        *ptr = 0;
        return string;
    }

    if (!value)
    {
        *ptr++ = 0x30;
        *ptr = 0;
        return string;
    }

    /* if this is a negative value insert the minus sign. */
    if (value < 0)
    {
        *ptr++ = '-';

        /* Make the value positive. */
        value *= -1;
    }

    for (i = 10000; i > 0; i /= 10)
    {
        d = value / i;

        if (d || flag)
        {
            *ptr++ = (char)(d + 0x30);
            value -= (d * i);
            flag = 1;
        }
    }

    /* Null terminate the string. */
    *ptr = 0;

    return string;

} /* NCL_Itoa */


void USART1_IO_Configuration(void)
{

	GPIO_InitTypeDef GPIO_InitStructure;					
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;	         		 //USART1 TX
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    		 //復用推挽輸出
  GPIO_Init(GPIOA, &GPIO_InitStructure);		    		 //A端口 

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;	         	 //USART1 RX
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;   	 //復用開漏輸入
  GPIO_Init(GPIOA, &GPIO_InitStructure);		         	 //A端口 
}

/****************************************************************************
* 名    稱：void NVIC_Configuration(void)
* 功    能：中斷源配置
* 入口參數：無
* 出口參數：無
* 說    明：
* 調用方法：無 
****************************************************************************/
void USART1_NVIC_Configuration(void)
{
  /*  結構聲明*/
  NVIC_InitTypeDef NVIC_InitStructure;

  /* Configure the NVIC Preemption Priority Bits */  
  /* Configure one bit for preemption priority */
  /* 優先級組 說明了搶占優先級所用的位數，和子優先級所用的位數   在這里是1， 7 */    
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);	  
  

  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;			     	//設置串口1中斷
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;	     	//搶占優先級 0
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;				//子優先級為0
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;					//使能
  NVIC_Init(&NVIC_InitStructure);
}