2440lib.c

来自「ucosii 的三星arm9 s3c2440 源码」· C语言 代码 · 共 84 行

/*
*********************************************************************************************************
*                                                uC/OS-II
*                                          The Real-Time Kernel
*                                   	  
*											  S3C2440 Library
*
*                          			     (c) Copyright 2005, king
*                                           All Rights Reserved
*
* File    : 2440lib.c
* Des	  : S3C2440侩 扁鸥 扼捞宏矾府
* By      : KInG([e-mail])
* History : 2005.07.30 -> draft
*********************************************************************************************************
*/

#include "includes.h"


static void StartTimeTick(void);


void InitSystem(void)
{   
	Uart_Init(PCLK, 115200);
	TL_Init(LCD_XSIZE, LCD_YSIZE, SCR_XSIZE, SCR_YSIZE);

	TL_FillFrame(BLUE);
	
	pISR_UART0 	= (unsigned int)ISR_Uart0RxD;
	rINTSUBMSK  &= ~BIT_SUB_RXD0;
	rINTMSK		&= ~BIT_UART0;
	
	StartTimeTick();
}


void Led_Display(int data)
{
	unsigned int Reg;
	
	Reg  	 = rGPCDAT;
	Reg 	|= 0x000000C0;
	rGPCDAT  = Reg;				//-- ALL OFF
}


void TFT_DrawLine(int xs, int xe, int yy, int color)
{
	int i;
	
 	for(i=xs;i<=xe;i++)	
 	 	TL_PutPixel(i, yy, color);
}


// 鸥烙平 惯积 窃荐 PWM狼 Timer4甫 荤侩窃(Timer4啊 PWM牢啊?)
static void StartTimeTick(void)
{
	INT32U ticf;				// Timer input clock Freauency
	
	rTCFG0 &= ~(0xff<<8);		// Prescaler1[15: 8]=0x00  (prescaler value=0)
	rTCFG1 &= ~(0xf<<16);		//       MUX4[19:16]=0000b (divider   value=2)

	// Timer input clock Freauency = PCLK / (prescaler value+1) / divider value
	ticf = PCLK / (0+1) / 2;		
	
	rTCNTB4 = ticf / OS_TICKS_PER_SEC;
	
	rTCON |=  (1<<22) | (1<<21);
	rTCON &= ~(1<<21);
	
	rTCON |=  (1<<20);			// Start for Timer4

	// TimeTick 牢磐反飘 氦磐 汲摹 & 牢磐反飘 付胶欧 秦力
	pISR_TIMER4  = (unsigned)OSTickISR;		
	rINTMSK     &= ~(BIT_TIMER4);
}