mini_system.c

凌阳SPCE3200 系统开发板随机自带源程序。共安排了32个子目录

#include "Mini_System.h"
#include "MIU_Control.h"
#define _WritePort(Port,Value) {*((UV32*)(Port)) = (UV32)(Value);}

void InitSPCE3200(U32 miu_mp4_clock_ratio)
{
	unsigned int *port;
	unsigned int i;
	
	_WritePort(0x88210038, 0x00000002);				// cpu clk / 3
	
	// MP4
	_WritePort(0x88210140, 0x00000003);				// P_CKG_CFG_BUFCTRL Enable
	_WritePort(0x882100f0, miu_mp4_clock_ratio-1);	//0:1:1;(1:MIU_CLK 2:MP4_CLK 1)
	_WritePort(0x882100ec, 0x00000007);

	_WritePort(0x88210024, 0x00000000);				// PPU Clock = 81MHz
	_WritePort(0x88210020, 0x00000003);				// PPU Clock Enable
	_WritePort(0x882100C8, 0x00000003);				// BUF Control Enable
	_WritePort(0x8809004c, 0x00000001);				// BUF Control Interrupt Mask
	
	_WritePort(0x882100FC, 0x00000003);				// SFTCFG Clock Enable
	
	// mp4
 /* 	if(miu_mp4_clock_ratio==1)	
 		_WritePort(0x882000c0, 0x00000006); */
/* 	else if(miu_mp4_clock_ratio==2)	 */
		_WritePort(0x882000c0, 0x0000000a);//SFTCFG
/* 	else if(miu_mp4_clock_ratio==3)	 */
/* 		_WritePort(0x882000c0, 0x0000000f);//SFTCFG */
 	
 	_WritePort(0x88210034, 0x00000003);// en lcd clk
 	_WritePort(0x88200000, 0x00000002);// LCD pin mux			
 	
 	_WritePort(0x88200004, 0x00000001);// SFTCFG Select I2C
 	port = (unsigned int *)0x88200000;	*port |= 0x00000300;// SFTCFG Select CCIR656
 	_WritePort(0x88210018, 0x00000003);// CSI Clock Enable
 	_WritePort(0x8821001C, 0x00000008);// Pixel Clock Enable
 	_WritePort(0x88210094, 0x00000003);// I2C Clock Enable
 	_WritePort(0x88210050, 0x00000003);// BLNDMA Clock Enable	
	
	//port = 0x880A0010;  *port = 0x001AC68F; //rex: switch priority of SPU and Timer
	//port = 0x880A0004;  *port = 0x00000002;//
	_WritePort(0x882100CC, 0x00000003);// LDMDMA Clock Enable
	_WritePort(0x880a0020, 0x00000000);// IRQ Mask Enable
	_WritePort(0x880a0024, 0x00000000);// IRQ Mask Enable		
	
	_WritePort(0x88210030, 0x00000003);// TVE Clock Enable
	_WritePort(0x88030050, 0x00000000);// Video DAC Enable		
	
	_WritePort(0x882100A4, 0x00000003);// SDCard Clock Enable
	_WritePort(0x88210098, 0x00000003);// SPI Clock Enable
	_WritePort(0x88210058, 0x00000003);// APBDMA Clock Enable
	
	_WritePort(0x8821005C, 0x00000003);// UART Clock Enable	
	
	_WritePort(0x88200030, 0xf819f819);// P_NFLASH_GPIO_PUPD for SDCard Setting	
	
	_WritePort(0x882000A4, 0x00010100);// SFTCFG SDCard Enable && SPI
	
	_WritePort(0x8821003C, 0x00000003);// SPU Clock Enable
	
	_WritePort(0x882100AC, 0x00000003);// ADC Clock Enable
		
	
	_WritePort(0x88051474, 0xFFFFFFFE);// DAC output Enable	
	for(i=0;i<200000;i++)	// Delay between enabling CEN and OEN, at least 30ms
	{}
	
	_WritePort(0x88051474, 0xFFFFFFFC);// DAC output Enable
	for(i=0;i<200000;i++)		// Delay for DAC stablization
	{}	
}

/**
 * InitSystem - initialize all basic function
 */
void InitSystem(void)
{
	//initialize MIU1 & MIU2
	MIU1_Init();

}