ARM精讲演示代码

ARM精讲演示代码串口程序设计/************************************************* Function name: 这是基础实验的一个模版Parameter : 无Description : 做基础实验，直接调用该模板即可Return : 无Argument : 无Autor & date : Daniel**************************************************/ #define GLOBAL_CLK 1#include <stdlib.h>#include <string.h>#include "def.h"#include "option.h"#include "2440addr.h"#include "2440lib.h"#include "2440slib.h"#include "mmu.h"#include "profile.h"#include "memtest.h"static void cal_cpu_bus_clk(void);void Set_Clk(void);void beep_init(void);void beep_run(void);/************************************************* Function name: delayParameter : timesDescription : 延时函数Return : voidArgument : voidAutor & date : Daniel**************************************************/ void delay(int times){int i,j;for(i=0;i<times;i++)for(j=0;j<400;j++);}/*************************************************Function name: MainParameter : voidDescription : 主功能函数,实现了串口的收发功能首先想串口发送十次“hello world”，然后从键盘输入R，则蜂鸣器连续响5次。

Return : voidArgument : voidAutor & date : Daniel**************************************************/ void Main(void){int i;int Scom=0;Set_Clk();beep_init();/*设置波特率、数据位、停止位、校验位*/Uart_Init(0,115200);Uart_Select(Scom);for(i=0;i<10;i++)Uart_Printf("\nHello World!\n");}/************************************************* Function name: Set_Clk()Parameter : voidDescription : 设置CPU的时钟频率Return : voidArgument : voidAutor & date : Daniel**************************************************/ void Set_Clk(void){int i;U8 key;U32 mpll_val = 0 ;i = 2 ; //don't use 100M!//boot_params.cpu_clk.val = 3;switch ( i ) {case 0: //200key = 12;mpll_val = (92<<12)|(4<<4)|(1);break;case 1: //300key = 13;mpll_val = (67<<12)|(1<<4)|(1);break;case 2: //400key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;case 3: //440!!!key = 14;mpll_val = (102<<12)|(1<<4)|(1);break;default:key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;}//init FCLK=400M, so change MPLL firstChangeMPllValue((mpll_val>>12)&0xff, (mpll_val>>4)&0x3f, mpll_val&3); //set the register--rMPLLCONChangeClockDivider(key, 12); //the result of rCLKDIVN [0:1:0:1] 3-0 bitcal_cpu_bus_clk(); //HCLK=100M PCLK=50M}/*************************************************Function name: cal_cpu_bus_clkParameter : voidDescription : 设置PCLK\HCLK\FCLK的频率Return : voidArgument : voidAutor & date : Daniel**************************************************/static void cal_cpu_bus_clk(void){static U32 cpu_freq;static U32 UPLL;U32 val;U8 m, p, s;val = rMPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;//(m+8)*FIN*2 不要超出32位数!FCLK = ((m+8)*(FIN/100)*2)/((p+2)*(1<<s))*100; //FCLK=400M FIN=12000000val = rCLKDIVN;m = (val>>1)&3;p = val&1;val = rCAMDIVN;s = val>>8;switch (m) {case 0:HCLK = FCLK;break;case 1:HCLK = FCLK>>1;break;case 2:if(s&2)HCLK = FCLK>>3;elseHCLK = FCLK>>2;break;case 3:if(s&1)HCLK = FCLK/6;elseHCLK = FCLK/3;break;}if(p)PCLK = HCLK>>1;elsePCLK = HCLK;if(s&0x10)cpu_freq = HCLK;elsecpu_freq = FCLK;val = rUPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;UPLL = ((m+8)*FIN)/((p+2)*(1<<s));UCLK = (rCLKDIVN&8)?(UPLL>>1):UPLL;}/************************************************* Function name: beep_init()Parameter : voidDescription : 初始化蜂鸣器Return : voidArgument : voidAutor & date : Daniel**************************************************/ void beep_init(void){rGPBCON &= ~(0x3<<0);rGPBCON |= (0x1<<0);}/************************************************* Function name: beep_run()Parameter : voidDescription : 运行蜂鸣器Return : voidArgument : voidAutor & date : Daniel**************************************************/ void beep_run(void){rGPBDAT |= (0x1<<0);delay(5000);rGPBDAT &= (0x0<<0);delay(5000);}触摸屏程序设计#define GLOBAL_CLK 1#include <stdlib.h>#include <string.h>#include "def.h"#include "option.h"#include "2440addr.h"#include "2440lib.h"#include "2440slib.h"#include "mmu.h"#include "profile.h"#include "memtest.h"#define ADC_FREQ 2500000int count = 0;volatile U32 preScaler;int xdata,ydata;void Test_Touchpanel(void);static void __irq AdcTsAuto(void);static void cal_cpu_bus_clk(void); void Set_Clk(void);/*延时函数*/void delay(int times){int i,j;for(i=0;i<times;i++)for(j=0;j<400;j++);}/*主函数*/int Main(void){int Scom=0;Set_Clk();Uart_Init(0,115200);Uart_Select(Scom);Test_Touchpanel();while(1);return 0;}/*触摸屏初始化*/void Test_Touchpanel(void){rADCDLY=50000; //Normal conversion mode delay about (1/3.6864M)*50000=13.56ms/*设置AD转频率*/preScaler = ADC_FREQ;preScaler = 50000000/ADC_FREQ - 1; //PCLK=50MrADCCON = (1<<14)|(preScaler<<6); //ADCPRS En,PRSCVL/*设置触摸屏为等待中断模式，等待触摸笔被按下*/rADCTSC=0xd3; //Wfait,XP_PU,XP_Dis,XM_Dis,YP_Dis,YM_En/*clear irq*/rSRCPND = 0x80000000;rINTPND = 0x80000000;ClearSubPending(BIT_SUB_TC);pISR_ADC = (U32)AdcTsAuto;/*enable INT_TC irq*/rINTMSK = 0x7fffffff;EnableSubIrq(BIT_SUB_TC);}/*************************************************Function name: AdcTsAutoParameter : voidDescription : 中断服务程序Return : voidArgument : voidAutor & date : Daniel**************************************************/static void __irq AdcTsAuto(void){U32 saveAdcdly;/****************stylus down************************//*检测子中断源，判断是否是INT_TC中断，且触摸笔按下*/if(rSUBSRCPND & (BIT_SUB_TC))if( !(rADCDAT0&0x8000))Uart_Printf("\nStylus down\n");elseUart_Printf("\nStylus up\n");}/*pull-up disable,自动连续X,Y坐标转换*/rADCTSC = (1<<3)|(1<<2);saveAdcdly=rADCDLY;rADCDLY=40000; //Normal conversion mode delay about (1/50M)*40000=0.8ms/*开始AD转换*/rADCCON|=0x1; //start ADCwhile(rADCCON & 0x1); //check if Enable_start is lowwhile(!(rADCCON & 0x8000)); //check if EC(End of Conversion) flag is high, This line is necessary~!!while(!(rSRCPND & 0x80000000)); //check if ADC is finished with interrupt bit/*获取X,Y坐标*/xdata=(rADCDAT0&0x3ff);ydata=(rADCDAT1&0x3ff);ClearSubPending(BIT_SUB_TC);//ClearPending(BIT_ADC);rSRCPND = 0x80000000;rINTPND = 0x80000000;EnableSubIrq(BIT_SUB_TC);//EnableIrq(BIT_ADC);rINTMSK = 0x7fffffff;/****************stylus down************************//****************stylus up**************************//*设置触摸屏为等待中断模式，等待触摸笔抬起*/rADCTSC =0xd3; //Waiting for interruptrADCTSC=rADCTSC|(1<<8); // Detect stylus up interrupt signal.while(1) //to check Pen-up state{if(rSUBSRCPND & (BIT_SUB_TC)) //check if ADC is finished with interrupt bit{Uart_Printf("Stylus Up Interrupt~!\n");break; //if Stylus is up(1) state}}/****************stylus up**************************/Uart_Printf("count=%03d XP=%04d, YP=%04d\n", count++, xdata, ydata);rADCDLY=saveAdcdly;/*设置触摸屏为等待中断模式，等待下次触摸笔按下*/rADCTSC =0xd3; //Waiting for interruptClearSubPending(BIT_SUB_TC);//ClearPending(BIT_ADC);rSRCPND = 0x80000000;rINTPND = 0x80000000;EnableSubIrq(BIT_SUB_TC);//EnableIrq(BIT_ADC);rINTMSK = 0x7fffffff;}/*************************************************Function name: Set_Clk()Parameter : voidDescription : 设置CPU的时钟频率Return : voidArgument : voidAutor & date : Daniel**************************************************/void Set_Clk(void){int i;U8 key;U32 mpll_val = 0 ;i = 2 ; //don't use 100M!//boot_params.cpu_clk.val = 3;switch ( i ) {case 0: //200key = 12;mpll_val = (92<<12)|(4<<4)|(1);break;case 1: //300key = 13;mpll_val = (67<<12)|(1<<4)|(1);break;case 2: //400key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;case 3: //440!!!key = 14;mpll_val = (102<<12)|(1<<4)|(1);break;default:key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;}//init FCLK=400M, so change MPLL firstChangeMPllValue((mpll_val>>12)&0xff, (mpll_val>>4)&0x3f, mpll_val&3); //set the register--rMPLLCONChangeClockDivider(key, 12); //the result of rCLKDIVN [0:1:0:1] 3-0 bitcal_cpu_bus_clk(); //HCLK=100M PCLK=50M}/*************************************************Function name: cal_cpu_bus_clkParameter : voidDescription : 设置PCLK\HCLK\FCLK的频率Return : voidArgument : voidAutor & date : Daniel**************************************************/static void cal_cpu_bus_clk(void){static U32 cpu_freq;static U32 UPLL;U32 val;U8 m, p, s;val = rMPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;//(m+8)*FIN*2 不要超出32位数!FCLK = ((m+8)*(FIN/100)*2)/((p+2)*(1<<s))*100; //FCLK=400M FIN=12000000val = rCLKDIVN;m = (val>>1)&3;p = val&1;val = rCAMDIVN;s = val>>8;switch (m) {case 0:HCLK = FCLK;break;case 1:HCLK = FCLK>>1;break;case 2:if(s&2)HCLK = FCLK>>3;elseHCLK = FCLK>>2;break;case 3:if(s&1)HCLK = FCLK/6;elseHCLK = FCLK/3;break;}if(p)PCLK = HCLK>>1;elsePCLK = HCLK;if(s&0x10)cpu_freq = HCLK;elsecpu_freq = FCLK;val = rUPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;UPLL = ((m+8)*FIN)/((p+2)*(1<<s));UCLK = (rCLKDIVN&8)?(UPLL>>1):UPLL;}ADC驱动程序设计/************************************************* Function name: 这是基础实验的一个模版Parameter : 无Description : 做基础实验，直接调用该模板即可Return : 无Argument : 无Autor & date : Daniel**************************************************/ #define GLOBAL_CLK 1#include <stdlib.h>#include <string.h>#include "def.h"#include "option.h"#include "2440addr.h"#include "2440lib.h"#include "2440slib.h"#include "mmu.h"#include "profile.h"#include "memtest.h"#define ADC_FREQ 2500000volatile U32 preScaler;volatile U32 adc_value=0;void adc_init(void);int ReadAdc(int channel);static void cal_cpu_bus_clk(void);void Set_Clk(void);void beep_init(void);void beep_run(void);/************************************************* Function name: delayParameter : timesDescription : 延时函数Return : voidArgument : voidAutor & date : Daniel**************************************************/ void delay(int times){int i,j;for(i=0;i<times;i++)for(j=0;j<400;j++);}/************************************************* Function name: MainParameter : voidDescription : 主功能函数Return : voidArgument : voidAutor & date : Daniel**************************************************/ void Main(void){/*时钟初始化*/Set_Clk();/*adc初始化*/adc_init();while(1){/*读取转换值*/adc_value=ReadAdc(0);delay(1000) ;}}Function name: adc_init()Parameter : int channelDescription : adc初始化Return : voidArgument : voidAutor & date : Daniel**************************************************/void adc_init(void){//选择输入通道，AIN0，对应开发板上W1可调电阻int channel=0;/*设置分频时钟*/preScaler = ADC_FREQ;preScaler = 50000000/ADC_FREQ - 1; //PCLK=50M/*AD转换频率设置，最大频率为2.5MHz*/rADCCON = (1<<14)|(preScaler<<6)|(channel<<3); //setup channeldelay(1000);}/*************************************************Function name: ReadAdc(int channel)Parameter : int channelDescription : 获取AD 转换后的值Return : intArgument : voidAutor & date : Daniel**************************************************/int ReadAdc(int channel){/*开始AD转换*/rADCCON |= 0x01; //start ADCwhile(rADCCON & 0x1); //check if Enable_start is low/*检查转换是否结束*/while(!(rADCCON & 0x8000)); //check if EC(End of Conversion) flag is high return ( (int)rADCDAT0 & 0x3ff );}Function name: Set_Clk()Parameter : voidDescription : 设置CPU的时钟频率Return : voidArgument : voidAutor & date : Daniel**************************************************/void Set_Clk(void){int i;U8 key;U32 mpll_val = 0 ;i = 2 ; //don't use 100M!//boot_params.cpu_clk.val = 3;switch ( i ) {case 0: //200key = 12;mpll_val = (92<<12)|(4<<4)|(1);break;case 1: //300key = 13;mpll_val = (67<<12)|(1<<4)|(1);break;case 2: //400key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;case 3: //440!!!key = 14;mpll_val = (102<<12)|(1<<4)|(1);break;default:key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;}//init FCLK=400M, so change MPLL firstChangeMPllValue((mpll_val>>12)&0xff, (mpll_val>>4)&0x3f, mpll_val&3); //set the register--rMPLLCONChangeClockDivider(key, 12); //the result of rCLKDIVN [0:1:0:1] 3-0 bit cal_cpu_bus_clk(); //HCLK=100M PCLK=50M}Function name: cal_cpu_bus_clkParameter : voidDescription : 设置PCLK\HCLK\FCLK的频率Return : voidArgument : voidAutor & date : Daniel**************************************************/static void cal_cpu_bus_clk(void){static U32 cpu_freq;static U32 UPLL;U32 val;U8 m, p, s;val = rMPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;//(m+8)*FIN*2 不要超出32位数!FCLK = ((m+8)*(FIN/100)*2)/((p+2)*(1<<s))*100; //FCLK=400M FIN=12000000val = rCLKDIVN;m = (val>>1)&3;p = val&1;val = rCAMDIVN;s = val>>8;switch (m) {case 0:HCLK = FCLK;break;case 1:HCLK = FCLK>>1;break;case 2:if(s&2)HCLK = FCLK>>3;elseHCLK = FCLK>>2;break;case 3:if(s&1)HCLK = FCLK/6;elseHCLK = FCLK/3;break;}if(p)PCLK = HCLK>>1;elsePCLK = HCLK;if(s&0x10)cpu_freq = HCLK;elsecpu_freq = FCLK;val = rUPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;UPLL = ((m+8)*FIN)/((p+2)*(1<<s));UCLK = (rCLKDIVN&8)?(UPLL>>1):UPLL;}LCD驱动程序设计#define GLOBAL_CLK 1#include <stdlib.h>#include <string.h>#include "def.h"#include "option.h"#include "2440addr.h"#include "2440lib.h"#include "2440slib.h"#include "mmu.h"#include "profile.h"#include "memtest.h"#define LCD_N35 //NEC 256K色240*320/3.5英寸TFT真彩液晶屏,每一条水平线上包含240个像素点，共有320条这样的线#if defined(LCD_N35)#define LCD_WIDTH 240#define LCD_HEIGHT 320#define LCD_PIXCLOCK 4#define LCD_RIGHT_MARGIN 39#define LCD_LEFT_MARGIN 16#define LCD_HSYNC_LEN 5#define LCD_UPPER_MARGIN 1#define LCD_LOWER_MARGIN 5#define LCD_VSYNC_LEN 1#endifvoid TFT_LCD_Test(void);#define LCD_XSIZE LCD_WIDTH#define LCD_YSIZE LCD_HEIGHT#define SCR_XSIZE LCD_WIDTH#define SCR_YSIZE LCD_HEIGHTvolatile static unsigned short LCD_BUFFER[SCR_YSIZE][SCR_XSIZE]; //定义320行，240列的数组，用于存放显示数据extern unsigned char sunflower_240x320[];#define M5D(n) ((n)&0x1fffff)#define LCD_ADDR ((U32)LCD_BUFFER)#define ADC_FREQ 2500000volatile U32 preScaler;static void cal_cpu_bus_clk(void);void Set_Clk(void);/*演示函数*/void delay(int times){int i,j;for(i=0;i<times;i++)for(j=0;j<400;j++);}/*在屏幕上画图*/static void Pait_Bmp(int x0,int y0,int h,int l,const unsigned char *bmp) {int x,y;U32 c;int p = 0;for( y = 0 ; y < l ; y++ ){for( x = 0 ; x < h ; x++ ){c = bmp[p+1] | (bmp[p]<<8) ;if ( ( (x0+x) < SCR_XSIZE) && ( (y0+y) < SCR_YSIZE) ) LCD_BUFFER[y0+y][x0+x] = c ;p = p + 2 ;}}}/*填充全屏为某一颜色*/static void Lcd_ClearScr( U16 c){unsigned int x,y ;for( y = 0 ; y < SCR_YSIZE ; y++ ){for( x = 0 ; x < SCR_XSIZE ; x++ ){LCD_BUFFER[y][x] = c ;}}}/*LCD开关*/static void Lcd_EnvidOnOff(int onoff){if(onoff==1)rLCDCON1|=1; // ENVID=ONelserLCDCON1 =rLCDCON1 & 0x3fffe; // ENVID Off}/*端口初始化*/static void Lcd_Port_Init( void ){rGPCUP=0xffffffff; // Disable Pull-up registerrGPCCON=0xaaaa02a8; //Initialize VD[7:0],VM,VFRAME,VLINE,VCLKrGPDUP=0xffffffff; // Disable Pull-up registerrGPDCON=0xaaaaaaaa; //Initialize VD[15:8]}/*LCD初始化*/static void LCD_Init(void){Lcd_Port_Init();/*显示模式初始化*//*bit[17:8](4:CLKV AL);bit[6:5](11:TFT LCD panel);bit[4:1](1100:16 bpp for TFT)*/rLCDCON1 = (LCD_PIXCLOCK << 8) | (3 << 5) | (12 << 1);/*bit[31:24](1:VBPD);bit[23:14](320-1:行数);bit[13:6](5:VFPD);bit[5:0](1:VSPW)*/rLCDCON2 = (LCD_UPPER_MARGIN << 24) | ((LCD_HEIGHT - 1) << 14) | (LCD_LOWER_MARGIN << 6) | (LCD_VSYNC_LEN << 0);/*bit[25:19](36:HBPD);bit[18:8](240-1:列数);bit[7:0](19:HFPD)*/rLCDCON3 = (LCD_RIGHT_MARGIN << 19) | ((LCD_WIDTH - 1) << 8) | (LCD_LEFT_MARGIN << 0);/*bit[15:8](13:MV AL,只有当LCDCON1 bit[7]MMODE=1才有效);bit[7:0](5:HSPW)*/rLCDCON4 = (13 << 8) | (LCD_HSYNC_LEN << 0);/*bit[11](5:6:5 Format);bit[9](VLINE/HSYNC polarity inverted);bit[8](VFRAME/VSYNC inverted)bit[3](Enalbe PWERN signal),bit[1](half-word swap control bit)*/rLCDCON5 = (1<<11) | (1 << 9) | (1 << 8) | (1 << 3) | (1 << 0);/*帧缓冲地址初始化*//*LCDBANK: 视频帧缓冲区内存地址30-22位LCDBASEU: 视频帧缓冲区的开始地址21-1位LCDBASEL: 视频帧缓冲区的结束地址21-1位*//*bit[29:21]:LCDBANK,bit[20:0]:LCDBASEU*/rLCDSADDR1 = ((LCD_ADDR >> 22) << 21) | ((M5D(LCD_ADDR >> 1)) << 0);/*bit[20:0]:LCDBASEL*/rLCDSADDR2 = M5D((LCD_ADDR + LCD_WIDTH * LCD_HEIGHT * 2) >> 1);/*PAGEWIDTH:虚拟屏幕一行的字节数，如果不使用虚拟屏幕，设置为实际屏幕的行字节数OFFSIZE:虚拟屏幕左侧偏移的字节数，如果不使用虚拟屏幕，设置为0 *//*bit[21:11]:OFFSIZE; bit[10:0]:PAGEWIDTH*/rLCDSADDR3 = LCD_WIDTH;/*屏蔽中断*/rLCDINTMSK |= 3;rTCONSEL &= (~7);/*disable调色板*/rTPAL = 0x0;/*禁止LPC3600/LCC3600模式*/rTCONSEL &= ~((1<<4) | 1);/*打开LCD*/Lcd_EnvidOnOff(1);}void TFT_LCD_Show(void){/*红(255:0:0);绿(0:255:0);蓝(0:0:255);黑(0:0:0);白(255,255,255)*//*在屏幕上显示三基色*/Lcd_ClearScr( (0x00<<11) | (0x00<<5) | (0x00) ) ; //clear screen blackdelay(10000);Lcd_ClearScr((0x1f<<11) | (0x00<<5) | (0x00)); //reddelay(10000);Lcd_ClearScr((0x00<<11) | (0x3f<<5) | (0x00)); //greendelay(10000);Lcd_ClearScr((0x00<<11) | (0x00<<5) | (0x1f)); //bluedelay(10000);Lcd_ClearScr( (0x1f<<11) | (0x3f<<5) | (0x1f) ) ; //clear screen white delay(10000);/*显示一副图片在屏幕上*/Pait_Bmp(0, 0, 240, 320, sunflower_240x320);}/*************************************************Function name: Set_Clk()Parameter : voidDescription : 设置CPU的时钟频率Return : voidArgument : voidAutor & date : Daniel**************************************************/void Set_Clk(void){int i;U8 key;U32 mpll_val = 0 ;i = 2 ; //don't use 100M!//boot_params.cpu_clk.val = 3;switch ( i ) {case 0: //200key = 12;mpll_val = (92<<12)|(4<<4)|(1);break;case 1: //300key = 13;mpll_val = (67<<12)|(1<<4)|(1);break;case 2: //400key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;case 3: //440!!!key = 14;mpll_val = (102<<12)|(1<<4)|(1);break;default:key = 14;mpll_val = (92<<12)|(1<<4)|(1);break;}//init FCLK=400M, so change MPLL firstChangeMPllValue((mpll_val>>12)&0xff, (mpll_val>>4)&0x3f, mpll_val&3); //set the register--rMPLLCONChangeClockDivider(key, 12); //the result of rCLKDIVN [0:1:0:1] 3-0 bit cal_cpu_bus_clk(); //HCLK=100M PCLK=50M}/*************************************************Function name: cal_cpu_bus_clkParameter : voidDescription : 设置PCLK\HCLK\FCLK的频率Return : voidArgument : voidAutor & date : Daniel**************************************************/static void cal_cpu_bus_clk(void){static U32 cpu_freq;static U32 UPLL;U32 val;U8 m, p, s;val = rMPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;//(m+8)*FIN*2 不要超出32位数!FCLK = ((m+8)*(FIN/100)*2)/((p+2)*(1<<s))*100; //FCLK=400M FIN=12000000val = rCLKDIVN;m = (val>>1)&3;p = val&1;val = rCAMDIVN;s = val>>8;switch (m) {case 0:HCLK = FCLK;break;case 1:HCLK = FCLK>>1;break;case 2:if(s&2)HCLK = FCLK>>3;elseHCLK = FCLK>>2;break;case 3:if(s&1)HCLK = FCLK/6;elseHCLK = FCLK/3;break;}if(p)PCLK = HCLK>>1;elsePCLK = HCLK;if(s&0x10)cpu_freq = HCLK;elsecpu_freq = FCLK;val = rUPLLCON;m = (val>>12)&0xff;p = (val>>4)&0x3f;s = val&3;UPLL = ((m+8)*FIN)/((p+2)*(1<<s));UCLK = (rCLKDIVN&8)?(UPLL>>1):UPLL;Uart_Printf("\nFCLK:%dMHz,HCLK:%dMHz,PCLK=%dMHZ\n",FCLK/1000/1000,HCLK/1000/1000,PCLK/1000/1000); }/*主函数*/int Main(void){Set_Clk();LCD_Init();TFT_LCD_Show();return 0;}。