集美大学 单片机考试复习资料 (基于飞思卡尔AW60).doc

集美大学机电专业单片机考试复习资料飞思卡尔AW60单片机复习1. 串口程序#include /* for EnableInterrupts macro */#include derivative.h /* include peripheral declarations */void MCUInit(void) SOPT = 0b01100000; /$70 System Options Register(write once) ICGC2 = 0b00110000; /$30 internal clock generation 2 ICGC1 = 0b01111000; /$78 internal clock generation while(!ICGS1_LOCK); /等待FLL稳定 PTBDD=0xff ; PTBD=0xff ;void SCIInit() unsigned int ubgs,baud=9600; unsigned char sysclk=20; /1.计算波特率并设置:ubgs = fsys/(波特率*16)(其中fsys=sysclk*1000000) ubgs = sysclk*(10000/(baud/100)/16; /理解参考上一行，此处便于CPU运算 SCI1BDH= (unsigned char)(ubgs & 0xFF00) 8); SCI1BDL= (unsigned char)(ubgs & 0x00FF); SCI1C1= 0; /无校验,正常模式(开始信号 + 8位数据(先发最低位) + 停止信号) SCI1C2= (0| SCI1C2_TE_MASK | SCI1C2_RE_MASK );/允许发送,允许接收,查询方式收发void SCISend1(unsigned char ch) while(!(SCI1S1 & SCI1S1_TDRE_MASK);/判断发送缓冲区是否为空 SCI1D = ch;void SCISendN(unsigned char n, unsigned char ch) unsigned i; for (i = 0; i n; i+) SCISend1(chi);unsigned char SCIRe1(unsigned char *p) unsigned int k; unsigned char i; for (k = 0; k = 0x0b) /接收失败 i = 0xff; *p = 0x01; return i;unsigned char SCIReN(unsigned n,unsigned char ch) unsigned char m; unsigned char fp; /接收标志 m = 0; while (m n) chm = SCIRe1(&fp); if (fp = 1) return 1; /接收失败 m+; return 0; /接收成功 void main(void) unsigned char SerialBuff=Hello! World!; /初始化存放接收数据的数组DisableInterrupts; /禁止总中断 MCUInit(); SCIInit(); EnableInterrupts; /开放总中断 SCISendN(13,SerialBuff); /串口发送Hello World! for(;) if(SCI1S1&SCI1S1_RDRF_MASK)!=0) PTBD=SCI1D ; if(SCI1S1&SCI1S1_TDRE_MASK)!=0) SCI1D=PTBD; else PTBD=0x00; 2.按键程序#include /* for EnableInterrupts macro */#include derivative.h /* include peripheral declarations */ #define uchar unsigned char#define uint unsigned intunsigned char table=I love mcu!;unsigned char table1= very much!;#define rsout PTCDD |= (14)#define rsset PTCD |= (14)#define rsclr PTCD &=(14)#define rwout PTCDD |= (16)#define rwset PTCD |= (16)#define rwclr PTCD &=(16)#define enout PTFDD |= (16)#define enset PTFD |= (16)#define enclr PTFD &=(16)void mcu_init(void) PTADD = 0XFF; rsout; rwout; enout;void MCUInit(void) SOPT = 0b01110000; ICGC2 = 0b00110000; ICGC1 = 0b01111000; while(!ICGS1_LOCK); void Delayms(uint MS) uint i,j; for( i=0;iMS;i+) for(j=0;j1141;j+);void Delay(uint count)uint i,j;for(j=0; jcount; j+) for(i=0;i1000; i+); void write_com(uchar com)rsclr;rwclr;enclr;PTAD=com;Delayms(5);enset;Delayms(5);enclr;void write_data(uchar date)rsset;rwclr;PTAD=date;Delayms(5);enset;Delayms(5);enclr;void initlcd(void)write_com(0x38);Delayms(5); write_com(0x01);Delayms(5);write_com(0x06);Delayms(5); write_com(0x0c);Delayms(5);void writedate(uint adress,uint date) write_com(adress); write_data(date);void KBInit(void) PTDD &= 0b01110011; /键盘口复位 PTGD &= 0b11100000; PTDDD &= 0b01110011; /定义列线(7-4位)为输入 PTGDD &= 0b11101111; PTDPE |= 0b10001100; /输入引脚(列线)有内部上拉电阻 PTGPE |= 0b00010000; PTGDD |= 0b00001111; /行线(3-0位)为输出 KBI1SC &=(11); /屏蔽键盘中断(KBIE = 0) KBI1PE = (0 |KBI1PE_KBIPE7_MASK |KBI1PE_KBIPE6_MASK |KBI1PE_KBIPE5_MASK |KBI1PE_KBIPE4_MASK); /允许输入引脚(列线)的中断可进入 KBI1SC = (0 |KBI1SC_KBACK_MASK); /清除键盘中断请求(KBACK = 1) const uint KBtable = 0xEE,9,0xDE,A,0xBE,B,0x7E,C, 0xED,6,0xDD,7,0xBD,8,0x7D,D, 0xEB,3,0xDB,4,0xBB,5,0x7B,E, 0xE7,0,0xD7,1,0xB7,2,0x77,F, 0x00; uint KBDef(uint valve) uint KeyPress; uint i; i = 0; KeyPress = 0xff; while (KBtablei != 0x00) /在键盘定义表中搜索欲转换的键值,直至表尾 if(KBtablei = valve) /在表中找到相应的键值 KeyPress = KBtablei+1;/取出对应的键定义值 break; i += 2; /指向下一个键值,继续判断 return KeyPress; uint KBScan1(void) uint line,i,tmp,tmp1,tmp2; line=0b11111110; /使第一根行线为0(低电平) for (i = 1; i = 4; i+) /最多将扫描4根行线 PTGD = line; /输出开始扫描 asm(NOP); asm(NOP); tmp1 = PTDD; tmp2 = PTGD; /整合扫描结果，即键盘输入引脚的4位 tmp = (tmp1 & 0x80); /输入扫描结果 取7位数 tmp1 &= 0x0C;/去23两位的数 tmp1 = (tmp13);/移到高位 tmp |= tmp1; tmp |= (tmp2 & 0x1f);/整合所有数值 /通过观察4根列线中是否出现低电平来判断当前行有无按键 if (tmp & 0xF0) != 0xF0) /当前行有键按下 break; /退出循环不再扫描 else /当前行无按键,准备扫描下一行 line = (line 1) | 0x01; if (i = 5) /无按键,以后将返回0xFF tmp = 0xFF; return (tmp); uint KBScanN(uint KB_count) uint i,KB_value_last,KB_value_now; if (0 = KB_count | 1 = KB_count) /先扫描一次得到的键值,便于下面比较 return KBScan1(); KB_value_now = KB_value_last = KBScan1(); for (i=0; iKB_count-1; i+)/以下多次扫描消除误差 Delay(15); KB_value_now = KBScan1(); if (KB_value_now = KB_value_last) return KB_value_now; /返回扫描的键值 else KB_value_last = KB_value_now; return 0xFF; /返回出错标志 void main(void) uint num=0; DisableInterrupts; MCUInit();mcu_init();Delayms(30);initlcd();write_com(0x80+0x40);for(num=0;num11;num+)write_data(tablenum);Delayms(20); KBInit(); / 键盘初始化 KBI1SC |=(11); / 开键盘中断 EnableInterrupts; / 开总中断for(;) ;interrupt 22 void isrKeyBoard(void) uint value; uint i; static int j=0; for(i=0; i50000; i+); DisableInterrupts; /关总中断 KBI1SC &=(11); /屏蔽键盘中断 KBI1SC|= KBISC_KBACK_MASK;/清中断标志位 value = KBScanN(10); /扫描键值,存于value中 if(value!=0xff) writedate(0x80+j,KBDef(value);/键值转化为定义值并发送 j+; PTDD&=0b01110011; PTGD&=0b11100000; /键盘初始化键盘中断 KBI1SC |=(11); /开放键盘中断 EnableInterrupts ; /开总中断 3. 数码管程序#include /* for EnableInterrupts macro */#include derivative.h /* include peripheral declarations */typedef unsigned char uint8;typedef unsigned short int uint16;const uint8 Dtable10 =/ 0 1 2 3 4 5 6 7 8 9 0x3F,0x06,0x5B,0x4F,0x66, 0x6D,0x7D,0x07,0x7F,0x6F;const uint8 CStable4 =/ 0 1 2 3 0xDF,0xEF,0xFD,0xFE; void Delay(uint16 count) uint8 i; uint16 j; for(j=0; jcount; j+) for(i=0; i200; i+); void MCUInit(void) SOPT = 0b01110000; ICGC2 = 0b00110000; ICGC1 = 0b01111000; while(!ICGS1_LOCK); void LEDinit(void) PTBDD = 0xFF; /数据口为输出 PTDDD |= 0x33; /位选口为输出void LEDshow1(uint8 i, uint8 c) PTDD = CStablei; PTBD = Dtablec; void LEDshow(uint8 *Buf) uint8 i,c; for (i = 0;i = 3;i+) c = Bufi-0; LEDshow1(i,c); Delay(100); void main(void) uint8 LEDBUF4; LEDBUF0=2; LEDBUF1=0; LEDBUF2=1; LEDBUF3=2; DisableInterrupts; MCUInit(); LEDinit(); EnableInterrupts; for(;) LEDshow(LEDBUF); 4. 电子钟程序#include /* for EnableInterrupts macro */#include derivative.h /* include peripheral declarations */#define uchar unsigned char#define uint unsigned intunsigned char table= 2012-5-3;unsigned char table1= 00:00:00;#define rsout PTCDD |= (14)#define rsset PTCD |= (14)#define rsclr PTCD &=(14) #define rwout PTCDD |= (16)#define rwset PTCD |= (16)#define rwclr PTCD &=(16)#define enout PTFDD |= (16)#define enset PTFD |= (16)#define enclr PTFD &=(16)uchar shi=0,fen=0,miao=0;uint Count_200ms=0;void mcu_init(void);void MCUInit(void) SOPT = 0b01110000; ICGC2 = 0b00110000; ICGC1 = 0b01111000; while(!ICGS1_LOCK); void Delayms(uint MS) uint i,j; for( i=0;iMS;i+) for(j=0;j1141;j+);void TPM1Init(void) TPM1SC=(0|TPM1SC_TOIE_MASK|TPM1SC_CLKSA_MASK |TPM1SC_PS2_MASK|TPM1SC_PS1_MASK); /TPM1时钟源选择系统时钟(20MHZ), 分频因子64 TPM1MODH=0xF4; TPM1MODL=0x24; /根据时钟源及分频因子,将TPM1的定时时间设定为200ms TPM1CNTH=0x00; TPM1CNTL=0x00;void write_com(uchar com)rsclr;rwclr;enclr;PTAD=com;Delayms(5);enset;Delayms(5);enclr;void write_data(uchar date)rsset;rwclr;PTAD=date;Delayms(5);enset;Delayms(5);enclr;void initlcd(void)write_com(0x38);Delayms(5); write_com(0x01);Delayms(5);write_com(0x06);Delayms(5); write_com(0x0c);Delayms(5);void write_sfm(uchar add,uchar date)uchar si,ge;si=date/10;ge=date%10;write_com(0x80+0x40+add);write_data(0x30+si);write_data(0x30+ge);void main(void) uint num=0; DisableInterrupts; MCUInit();mcu_init();Delayms(30);initlcd();TPM1Init();PTBDD=0XFF; PTBD=0XFF; EnableInterrupts;write_com(0x80);for(num=0;num12;num+)write_data(tablenum);Delayms(20);write_com(0x80+0x40);for(num=0;num12;num+)write_data(table1num);Delayms(20);for(;) void mcu_init(void) PTADD = 0XFF; rsout; rwout; enout;interrupt 11 void TPM1_200msover(void) uint temp; DisableInterrupts; Count_200ms+; while(Count_200ms=5) PTBD=PTBD; miao+; if(miao=60) miao=0; fen+; if(fen=60) fen=0; shi+; if(shi=24) shi=0; write_sfm(4,shi); write_sfm(7,fen); write_sfm(10,miao); Count_200ms=0; temp=TPM1SC; TPM1SC&=TPM1SC_TOF_MASK; EnableInterrupts;5. AD转换程序#include /* for EnableInterrupts macro */#include derivative.h /* include peripheral declarations */typedef unsigned char uint8; / 8 位无符号数typedef unsigned short int uint16; / 16 位无符号数typedef unsigned long int uint32; / 32 位无符号数typedef char int8; / 8 位有符号数typedef short int int16; / 16 位有符号数 typedef int int32; / 32 位有符号数 uint8 LEDBUF4;const uint8 Dtable10 =/ 0 1 2 3 4 5 6 7 8 9 0x3F,0x06,0x5B,0x4F,0x66, 0x6D,0x7D,0x07,0x7F,0x6F;/片选表 (电平为低片选)const uint8 CStable4 =/ 0 1 2 3 0xDF,0xEF,0xFD,0xFE; void Delay(uint16 count) uint8 i; uint16 j; for(j=0; jcount; j+) for(i=0; i j) ? j : i; tmp = (tmp k) ? tmp : k; return tmp;uint8 ADCAve(uint8 channel, uint8 n) /均值滤波 uint16 i; uint32 j; j = 0; for (i = 0; i n; i+) j += ADCMid(channel); j = j/n; return (uint8)j;/将AD转换得到的数值量还原为实际的电压值，将电压值的BCD码存储显示缓冲区void ADCV_Vol(uint8 ADC_V,uint8 *p) uint8 V,V1; V=(uint8)(ADC_V/51); V1=ADC_V%51; *p=V; V=(uint8)(V1*10)/51; V1=(V1*10)%51; *(p+1)=V; V=(uint8)(V1*10)/51; V1=(V1*10)%51; *(p+2)=V; V=(uint8)(V1*10)/51; *(p+3)=V;void LEDinit(void) PTBDD = 0xFF; /数据口为输出 PTBPE=0xff; /为B口输出配置上拉电阻 PTBDS=0xff; PTDDD |= 0x33; /位选口为输出void LEDshow1(uint8 i, uint8 c) PTDD = CStablei; PTBD = Dtablec;void LEDshow(uint8 *Buf) uint8 i,c; for (i = 0;i = 3;i+) c = Bufi; LEDshow1(3-i,c); Delay(10); void main(void) uint8 V1Value; LEDBUF0=0; LEDBUF1=0; LEDBUF2=0; LEDBUF3=0; DisableInterrupts; MCUInit(); /MCU初始化 ADCInit(); /AD模块初始化 LEDinit(); /LED数码块接口初始化 EnableInterrupts; for(;) V1Value=ADCAve(15,50); /取得中值滤波法得到的AD转换数值 ADCV_Vol(V1Value,LEDBUF); /将AD转换数值转化为对应的电压值的 LEDshow(LEDBUF) ; /LED数码块显示 6. PWM程序#include /* for EnableInterrupts macro */#include derivative.h /* include peripheral declarations */typedef unsigned char uint8; / 8 位无符号数typedef unsigned short int uint16; / 16 位无符号数typedef unsigned long int uint32; / 32 位无符号数typedef char int8; / 8 位有符号数typedef short int int16; / 16 位有符号数 typedef int int32; / 32 位有符号数 uint16 T1_Mod=0;void delay(