uhal.c

基于ARM应用的源码

/* ARM board targetting source file.
   file name: uhal.c
   date: 2001. 2. 14
   made by cho dong-seok
   homepage: www.pusanssm.com/~cthr36/
*/
#include <stdarg.h>
#include <string.h>
#include "uHAL.h"
#include "44B.h"

//MCLK= 50000000
//50000000hz/256/32= 6103.51hz
#define	_TICK	1000				//  1/_TICK 秒 (为 1000 则表明为 1/1000 秒)
#define _CLOCK	(66000/(_TICK/10))
//#define _CLOCK	61035			// 1 sec

#define MAX_TBUF	10000

static char tbuf[MAX_TBUF]= {0, };
int delayLoopCount= 400;
int whichUart= 0;

//------------------------------------------------------------------------------------
//	通过串口输出数据进行调试
//------------------------------------------------------------------------------------
int uHALr_printf(const char *format, ...)
{
	va_list v_list;
	char *ptr;
	int i= 0;

	// 根据格式字符串和参数形成固定字符串
	va_start(v_list, format);
	vsprintf(tbuf, format, v_list ); 
	va_end(v_list);

	ptr= tbuf;
	while( (*ptr) && i<MAX_TBUF) 
	{
		Uart_SendByte(*ptr);
		ptr++;	i++;
	}

	return 1;
}

//------------------------------------------------------------------------------------
//	断点处理，用于调试
//------------------------------------------------------------------------------------
void BreakPoint(void)
{
	uHALr_printf("!!!Enter break point.");	

	while(1) 
	{
		Led_Display(0xf);
		Delay(1000);
		Led_Display(0x0);
		Delay(1000);
	}
}

//----------------------------------------------------------------------------------------------
// 复位内存管理单元 (由 ARMTargetInit 调用)
//----------------------------------------------------------------------------------------------
void uHALr_ResetMMU(void)
{
}

//Define pre & post-process routines for Interrupt.
void uHALir_DefineIRQ(void *is, void *iq, void *n)
{
}

//----------------------------------------------------------------------------------------------
// 初始化中断
//----------------------------------------------------------------------------------------------
void uHALr_InitInterrupts(void)
{
    rINTCON	= 0x0;				// 非向量，禁止 IRQ，禁止 FIQ
    rINTMOD	= 0x0;				// 所有中断源工作在 IRQ 模式
    rINTMSK	= BIT_GLOBAL;		// 禁止所有中断
}

//----------------------------------------------------------------------------------------------
//	初始化操作系统所需的定时器
//----------------------------------------------------------------------------------------------
void uHALr_InitTimers(void)
{
	rTCFG0	= 0x00000004;		// prescaler0 = 4
	rTCFG1	= 0x00000003;		// mux0 = 1/16

	rTCNTB0	= 1000;//_CLOCK;
	rTCMPB0	= 0x0;
	rTCON	= 0x2;		//update mode for TCNTB0 and TCMPB0.
	rTCON	= 0x9;		//timer0 = auto reload, start
}

int I_COUNT=0;

void DebugUNDEF(void)
{
	uHALr_printf("\r\n!!!Enter UNDEFINED. %d\r\n", I_COUNT);	

	while(1) {
		Led_Display(0xf);
		Delay(1000);
		Led_Display(0x0);
		Delay(1000);
	}
}

void DebugSWI(void)
{
	uHALr_printf("\r\n!!!Enter SWI. %d\r\n", I_COUNT);	

	while(1) 
	{
		Led_Display(0xf);
		Delay(1000);
		Led_Display(0x0);
		Delay(1000);
	}
}

void DebugABORT(void)
{
	uHALr_printf("\r\n!!!Enter ABORT %d\r\n", I_COUNT);	

	while(1) 
	{
		Led_Display(0xf);
		Delay(1000);
		Led_Display(0x0);
		Delay(1000);
	}
}

void DebugFIQ(void)
{
	uHALr_printf("\r\n!!!Enter FIQ. %d\r\n", I_COUNT);	

	while(1) 
	{
		Led_Display(0xf);
		Delay(1000);
		Led_Display(0x0);
		Delay(1000);
	}
}
 
extern void __Tick(void);

//----------------------------------------------------------------------------------------------
// 请求系统定时器(由 ARMTargetStart 调用)，成功返回 1，否则返回 0
//----------------------------------------------------------------------------------------------
int uHALr_RequestSystemTimer(void *tick, const unsigned char *str)
{
	pISR_TIMER0		= (unsigned)__Tick;				// 操作系统使用 Timer0 进行时间片调度

	pISR_UNDEF		= (unsigned) DebugUNDEF;
	pISR_SWI		= (unsigned) DebugSWI;
	pISR_PABORT		= (unsigned) DebugABORT;
	pISR_DABORT		= (unsigned) DebugABORT;
//	pISR_RESERVED
//	pISR_IRQ		= (unsigned) 0;
	pISR_FIQ		= (unsigned) DebugFIQ;

	pISR_RTC		= (unsigned) BreakPoint;
	pISR_SIO		= (unsigned) BreakPoint;
	pISR_IIC		= (unsigned) BreakPoint;
	pISR_EINT4567	= (unsigned) BreakPoint;
	pISR_WDT		= (unsigned) BreakPoint;
	pISR_UERR01		= (unsigned) BreakPoint;
	pISR_BDMA1		= (unsigned) BreakPoint;
	pISR_BDMA0		= (unsigned) BreakPoint;
	pISR_ZDMA1		= (unsigned) BreakPoint;
	pISR_ZDMA0		= (unsigned) BreakPoint;
	pISR_EINT3		= (unsigned) BreakPoint;
	pISR_EINT2		= (unsigned) BreakPoint;
	pISR_EINT1		= (unsigned) BreakPoint;
	pISR_EINT0		= (unsigned) BreakPoint;

	pISR_ADC		= (unsigned) BreakPoint;	// AD 转换成功中断
	pISR_URXD0		= (unsigned) BreakPoint;	// 串口 0 接收中断
	pISR_UTXD0		= (unsigned) BreakPoint;	// 串口 0 发送中断
	pISR_URXD1		= (unsigned) BreakPoint;	// 串口 1 接收中断
	pISR_UTXD1		= (unsigned) BreakPoint;	// 串口 1 发送中断

	pISR_TIMER1		= (unsigned) BreakPoint;	// 定时器 1 中断
	pISR_TIMER2		= (unsigned) BreakPoint;	// 定时器 2 中断
	pISR_TIMER3		= (unsigned) BreakPoint;	// 定时器 3 中断

	return 1;
}

//----------------------------------------------------------------------------------------------
// 开始系统定时器并允许中断
//----------------------------------------------------------------------------------------------
void uHALr_InstallSystemTimer(void)
{
    rINTCON	= 0x5;							// 非向量、允许IRQ，禁止FIQ

	// 允许 TIMER0 中断、(缺省值为 0x7FFFFFFF)
	rINTMSK	= ~(BIT_GLOBAL | BIT_TIMER0);	
}