led.c

LED code tells you how to code

/*************************************************************************************
*	Copyright (c) 2005 by National ASIC System Engineering Research Center.
*	PROPRIETARY RIGHTS of ASIC are involved in the subject matter of this 
*	material.  All manufacturing, reproduction, use, and sales rights 
*	pertaining to this subject matter are governed by the license agreement.
*	The recipient of this software implicitly accepts the terms of the license.
*
*	File Name: led.c
*
*	File Description:
*			The file consists of the function used to config uart
*
*	Function Description:
*			STATUS	ModuleLed(void);
*			void LedDisPlay(U8 data[]);
*			void GPIO_Init(void);
*			void Hex2Seg (U8 data[], U8 * p);
*			void LedOut(U8 data[], U32 times);
*			void LedUpdate(void);
*			void delay(int cycle);
*
*
*	Created by Wuer xiao
**************************************************************************************/

#include "garfield.h"
#include <string.h>

U8 SEGMENT[16] = {	(U8)(sect2 + sect3 + sect4 + sect5 + sect6 + sect7),			//0
					(U8)(sect5 + sect6),											//1	
					(U8)(sect1 + sect3 + sect4 + sect6 + sect7),					//2	
					(U8)(sect1 + sect4 + sect5 + sect6 + sect7),					//3	
					(U8)(sect1 + sect2 + sect5 + sect6),							//4
					(U8)(sect1 + sect2 + sect4 + sect5 + sect7),					//5	
					(U8)(sect1 + sect2 + sect3 + sect4 + sect5 + sect7),			//6				
					(U8)(sect5 + sect6 + sect7),									//7
					(U8)(sect1 + sect2 + sect3 + sect4 + sect5 + sect6 + sect7),	//8	
					(U8)(sect2 + sect3 + sect4 + sect5 + sect6 + sect7),			//9
					(U8)(sect1 + sect2 + sect3 + sect5 + sect6 + sect7),			//a	
					(U8)(sect1 + sect2 + sect3 + sect4 + sect5),					//b
					(U8)(sect2 + sect3 + sect4 + sect7),							//c
					(U8)(sect1 + sect3 + sect4 + sect5 + sect6),					//d
					(U8)(sect1 + sect2 + sect3 + sect4 + sect7),					//e
					(U8)(sect1 + sect2 + sect3 + sect7)								//f
		   		};
U8 prochip[8] = { 0xce, 0x60, 0x6e, 0x9c, 0xfc, 0xee, 0xce };		// prochip LOGO
U8 display[8] = {0x0f,0x01,0x02,0x03,0x04,0x05,0x06,0x07};			// 实验中显示的数据（0－0xf）	

#define ROLL;														// 是否以滚屏方式显示： no define: 不滚屏
																	//                         define: 滚屏方式					
int main(void)
{
	char *s1,*s2,*s3;
	s1="There is no LED on GE00\n";
	s2="Error in Led lab!!!\n";
	s3="Succeeded in Led lab!!!\n";
	#ifdef GE00
	    DBG_Printf(s1);
	    return;
	#else 
	if(E_OK != ModuleLed())
		  DBG_Printf("Error in Led lab!!!\n");
		//PRINT(s2);
	else	//PRINT(s3);
	     DBG_Printf("Succeeded in Led lab!!!\n"); 	
	#endif
	
	while(1);

	return E_OK;
}


STATUS	ModuleLed(void)
{
	/* system initialized */
	system_init();										// 系统初始化

	/* GPIO initialized */
	GPIO_Init();
	
	
	/* led lab body */
	LedOut(prochip,5);									// 在LED上显示“PROCHIP〉的logo
	
	
	LedDisPlay(display);								// 显示用户设定的内容
	
	
	return E_OK;
	
}


void LedDisPlay(U8 data[])
{
	U8* SegData;
	
	Hex2Seg(data, SegData);								// 十六进制数字翻译成7段译码值
	LedOut(SegData, 10);								// 在led上显示
}	


void GPIO_Init()
{
	*(RP)PORTD_SEL = 0x7;								// 设定GPIO口 PD0/1/2 为通用口
	*(RP)PORTD_DIR = 0x0;								// 设定GPIO口 PD0/1/2 为数据输出

}


void Hex2Seg (U8 hexdata[], U8 * p)
{
	int i;
		
	for (i=0;i<8;i++)
	{
		*p++ = SEGMENT[hexdata[i]];						 // 将要显示的数值，通过查找7段译码表翻译成码值
	}


}

void LedOut(U8 data[], U32 times)
{
	int Segment_i,Bit_i,i;
	U8 Segment_Data;
	U8 tempData;

	for(i = 0; i < times; i++)
	{
		for (Bit_i = 0; Bit_i < 8 ;Bit_i++)						// 依次串行导入八个led的显示内容
		{	
			Segment_Data=*(data + Bit_i);						// 获得一个led显示的码值
		
			for (Segment_i = 0; Segment_i < 8; Segment_i++)		// 将7段译码值依次串行输入到GPIO口中
			{	
				tempData=(Segment_Data>>Segment_i) & 0x1;		// 得到一段发光管的译码值
				*(RP)PORTD_DATA = tempData;						// 写入74HC595的输入端，同时拉低PD3		
				
				tempData |= 0x04; 
				*(RP)PORTD_DATA = tempData;						// 拉高PD3，触发74HC595，移位寄存
				
			
			}
		#ifdef ROLL
			delay(0x100000);									// 决定滚屏时间长短的等待时间
			LedUpdate();										// 显示到LED上
		#endif			
		}
		
		#ifndef ROLL
			LedUpdate();										// 显示到LED上
		#endif
		
	}
	
}

 
void LedUpdate(void)											// 74HC595锁存锁存输出，即led显示使能
{	
	*(RP)PORTD_DATA |= 0x2;
}


void delay(int cycle)
{
	int j = 0;
	
	for(j = 0; j < cycle; j++);	
	return;

}