写在前面
觉得52单片机比较低端的,可以尝试本文的MSP430,两种测量方案均通过测试仿真,个人还是推荐C52,proteus对其他单片机仿真的速度好像提不了太快,承接上文,本次主要设计就是用的是MSP430F249的主控,文末附上下载链接
完成效果
注意事项
三个时钟都要进行设置,确保时钟为8M方可正常使用
我就不多说了直接贴代码吧
测频串口发送机
oled.c
// // ---------------------------------------------------------------- // GND 电源地 // VCC 接3.3v电源 // D0 P54(时钟) // D1 P53(数据) // RES 接P52 // DC 接P51 // CS 接P50 // ---------------------------------------------------------------- //******************************************************************************/ #include "oled.h" #include "oledfont.h" //OLED的显存 //存放格式如下. //[0]0 1 2 3 ... 127 //[1]0 1 2 3 ... 127 //[2]0 1 2 3 ... 127 //[3]0 1 2 3 ... 127 //[4]0 1 2 3 ... 127 //[5]0 1 2 3 ... 127 //[6]0 1 2 3 ... 127 //[7]0 1 2 3 ... 127 void delay_ms(unsigned int ms) { unsigned int a; while(ms) { a=1800; while(a--); ms--; } return; } //向SSD1306写入一个字节。 //dat:要写入的数据/命令 //cmd:数据/命令标志 0,表示命令;1,表示数据; void OLED_WR_Byte(u8 dat,u8 cmd) { u8 i; if(cmd) OLED_DC_Set(); else OLED_DC_Clr(); OLED_CS_Clr(); for(i=0;i<8;i++) { OLED_SCLK_Clr(); if(dat&0x80) { OLED_SDIN_Set(); } else OLED_SDIN_Clr(); OLED_SCLK_Set(); dat<<=1; } OLED_CS_Set(); OLED_DC_Set(); } void OLED_Set_Pos(unsigned char x, unsigned char y) { OLED_WR_Byte(0xb0+y,OLED_CMD); OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD); OLED_WR_Byte((x&0x0f)|0x01,OLED_CMD); } //开启OLED显示 void OLED_Display_On(void) { OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令 OLED_WR_Byte(0X14,OLED_CMD); //DCDC ON OLED_WR_Byte(0XAF,OLED_CMD); //DISPLAY ON } //关闭OLED显示 void OLED_Display_Off(void) { OLED_WR_Byte(0X8D,OLED_CMD); //SET DCDC命令 OLED_WR_Byte(0X10,OLED_CMD); //DCDC OFF OLED_WR_Byte(0XAE,OLED_CMD); //DISPLAY OFF } //清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!! void OLED_Clear(void) { u8 i,n; for(i=0;i<8;i++) { OLED_WR_Byte (0xb0+i,OLED_CMD); //设置页地址(0~7) OLED_WR_Byte (0x00,OLED_CMD); //设置显示位置—列低地址 OLED_WR_Byte (0x10,OLED_CMD); //设置显示位置—列高地址 for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA); } //更新显示 } //在指定位置显示一个字符,包括部分字符 //x:0~127 //y:0~63 //mode:0,反白显示;1,正常显示 //size:选择字体 16/12 void OLED_ShowChar(u8 x,u8 y,u8 chr) { unsigned char c=0,i=0; c=chr-' ';//得到偏移后的值 if(x>Max_Column-1){x=0;y=y+2;} if(SIZE ==16) { OLED_Set_Pos(x,y); for(i=0;i<8;i++) OLED_WR_Byte(F8X16[c*16+i],OLED_DATA); OLED_Set_Pos(x,y+1); for(i=0;i<8;i++) OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA); } else { OLED_Set_Pos(x,y+1); for(i=0;i<6;i++) OLED_WR_Byte(F6x8[c][i],OLED_DATA); } } //m^n函数 u32 oled_pow(u8 m,u8 n) { u32 result=1; while(n--)result*=m; return result; } //显示2个数字 //x,y :起点坐标 //len :数字的位数 //size:字体大小 //mode:模式 0,填充模式;1,叠加模式 //num:数值(0~4294967295); void OLED_ShowNum(u8 x,u8 y,u32 num,u8 len,u8 size2) { u8 t,temp; u8 enshow=0; for(t=0;t<len;t++) { temp=(num/oled_pow(10,len-t-1))%10; if(enshow==0&&t<(len-1)) { if(temp==0) { OLED_ShowChar(x+(size2/2)*t,y,' '); continue; }else enshow=1; } OLED_ShowChar(x+(size2/2)*t,y,temp+'0'); } } //显示一个字符号串 void OLED_ShowString(u8 x,u8 y,u8 *chr) { unsigned char j=0; while (chr[j]!='\0') { OLED_ShowChar(x,y,chr[j]); x+=8; if(x>120){x=0;y+=2;} j++; } } //显示汉字 void OLED_ShowCHinese(u8 x,u8 y,u8 no) { u8 t,adder=0; OLED_Set_Pos(x,y); for(t=0;t<16;t++) { OLED_WR_Byte(Hzk[2*no][t],OLED_DATA); adder+=1; } OLED_Set_Pos(x,y+1); for(t=0;t<16;t++) { OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA); adder+=1; } } /***********功能描述:显示显示BMP图片128×64起始点坐标(x,y),x的范围0~127,y为页的范围0~7*****************/ void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]) { unsigned int j=0; unsigned char x,y; if(y1%8==0) y=y1/8; else y=y1/8+1; for(y=y0;y<y1;y++) { OLED_Set_Pos(x0,y); for(x=x0;x<x1;x++) { OLED_WR_Byte(BMP[j++],OLED_DATA); } } } //初始化SSD1306 void OLED_Init(void) { OLED_SSD1306_SCLK_IO_INIT; OLED_SSD1306_SDIN_IO_INIT; OLED_SSD1306_DC_IO_INIT; OLED_SSD1306_CE_IO_INIT; OLED_SSD1306_RST_IO_INIT; LED_IO_INIT;//用来点开发板上的led灯用的; OLED_RST_Set(); delay_ms(100); OLED_RST_Clr(); delay_ms(100); OLED_RST_Set(); /* OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel OLED_WR_Byte(0x00,OLED_CMD);//---set low column address OLED_WR_Byte(0x10,OLED_CMD);//---set high column address OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F) OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register OLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current Brightness OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常 OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常 OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64) OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F) OLED_WR_Byte(0x00,OLED_CMD);//-not offset OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration OLED_WR_Byte(0x12,OLED_CMD); OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02) OLED_WR_Byte(0x02,OLED_CMD);// OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5) OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7) OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel */ OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel OLED_WR_Byte(0x00,OLED_CMD);//---set low column address OLED_WR_Byte(0x10,OLED_CMD);//---set high column address OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F) OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register OLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current Brightness OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常 OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常 OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64) OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset Shift Mapping RAM Counter (0x00~0x3F) OLED_WR_Byte(0x00,OLED_CMD);//-not offset OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration OLED_WR_Byte(0x12,OLED_CMD); OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02) OLED_WR_Byte(0x02,OLED_CMD);// OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5) OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7) OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel OLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/ OLED_Clear(); OLED_Set_Pos(0,0); }
uart.c
#include"uart.h" void init_uart0()//UCSWRST(默认置位)置位时才能调整控制寄存器参数 { P3SEL = 0x30; // P3.4,5 = USCI_A0 TXD/RXD UCA0CTL1 |= UCSSEL_2; // SMCLK UCA0BR0 = 65; // 1MHz 9600; (104)decimal = 0x068h UCA0BR1 = 3; // 1MHz 9600 UCA0MCTL = UCBRS0; // Modulation UCBRSx = 1 UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine** IE2 |= UCA0RXIE; // Enable USCI_A0 RX interrupt } void send_data(uchar Data) { UCA0TXBUF = Data; // TX -> RXed character while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready? } void send_string(char *p) { uchar len; len=strlen(p); while(len) { send_data(*p); p++; len--; } } #pragma vector=USCIAB0RX_VECTOR __interrupt void usart0_rx (void) { uchar c; UCA0TXBUF = UCA0RXBUF; c= UCA0RXBUF; }
timer.c
#include<io430f249.h> #include"DataType.h" uint n=0,m=1; ulint F=0,f=0; /**************************************************************************** 初始定时器A ******************************************************************************/ void Int_TimerA(void) { P1SEL|=BIT0; P1DIR&=~BIT0; TACTL|=TASSEL_0+ID_0+MC_2; TACCTL0|=CCIE; } /**************************************************************************** 初始定时器B ******************************************************************************/ void Int_TimerB(void) { TBCTL|=TBSSEL_2+ID_0+MC_1; TBCCTL0|=CCIE; TBCCR0=62499; } /**************************************************************************** 中断定时器A ******************************************************************************/ #pragma vector=TIMERA0_VECTOR __interrupt void Timer_A (void) { TAR=TBR=0; if(m>1) m=m/2; n=0; } /**************************************************************************** 中断定时器B ******************************************************************************/ #pragma vector=TIMERB0_VECTOR __interrupt void Timer_B (void) { n++; if(m==n) { f=TAR; switch(m) { case 1:f=128*f;m=2*m;break; case 2:f=64*f;m=2*m;break; case 4:f=32*f;m=2*m;break; case 8:f=16*f;m=2*m;break; case 16:f=8*f;m=2*m;break; case 32:f=4*f;m=2*m;break; case 64:f=2*f;m=2*m;break; } TAR=TBR=0; n=0; } }
main.c
#include <io430f249.h> #include "oled.h" #include "stdio.h" #include "stdint.h" #include "DataType.h" #include "Clock.h" #include "Delay.h" #include "Timer.h" #include "uart.h" ulint F1=0; int i=0; uchar tmp2[5]={'0','0','0','0','\0'}; void jisuan() { tmp2[0]='0'+F1/1000; tmp2[1]='0'+F1/100%10; tmp2[2]='0'+F1/10%10; tmp2[3]='0'+F1%10; } int main( void ) { WDTCTL = WDTPW + WDTHOLD; //Int_Clk(); init_uart0(); OLED_Init(); OLED_Clear(); OLED_ShowCHinese(8,0,2); OLED_ShowCHinese(24,0,3); OLED_ShowChar(40,0,':'); OLED_ShowCHinese(0,6,4); OLED_ShowCHinese(16,6,5); OLED_ShowCHinese(32,6,6); OLED_ShowCHinese(48,6,7); Int_TimerA(); Int_TimerB(); _EINT(); DelaymS(100); //send_string("123456785678990-\r\n"); 测试 while(1) { F1=f; OLED_ShowNum(48,0,F1,7,16); OLED_ShowString(104,0,"hz"); jisuan(); //sprintf((char *)tmp2,"%4d",F1); send_data(tmp2[0]); DelaymS(10); send_data(tmp2[1]); DelaymS(10); send_data(tmp2[2]); DelaymS(10); send_data(tmp2[3]); DelaymS(10); } }
delay.c
#include<io430f249.h> #include"DataType.h" /**************************************************************************** 延时250uS ******************************************************************************/ void Delay250uS(uint X) { uint i,j; for(i=0;i<X;i++) for(j=0;j<2000;j++); } /**************************************************************************** 延时1mS ******************************************************************************/ void DelaymS(uint X) { uint i,j; for(i=0;i<X;i++) for(j=0;j<8000;j++); } /**************************************************************************** 延时1S ******************************************************************************/ void DelayS(uint X) { uint i; ulint j; for(i=0;i<X;i++) for(j=0;j<8000000;j++); }
DataType.h
#ifndef __DATATYPE_H #define __DATATYPE_H #define uint unsigned int #define uchar unsigned char #define ushort unsigned short #define ulint unsigned long int #define ldouble long double #endif
clock.c
这个时钟可以选择打开或者注释掉也行,因为在这里时钟咱们都配置好了,具体我也不清楚proteus下面的是怎么对这个解释,我的理解就是,系统时钟都通过手动进行配置完成,使用内部资源的时候,只需要对不同的时钟进行选择,所以这里时钟配置与否都不影响工作。
#include<io430f249.h> #include<in430.h> #include"DataType.h" /**************************************************************************** 初始化时钟 ******************************************************************************/ void Int_Clk(void) { uchar i; BCSCTL1&=~XT2OFF; //开启XT2振荡器 BCSCTL2|=SELM_2+SELS; //选择MCLK时钟源为XT2CLK;选择SMCLK时钟源为XT2CLK do { IFG1&=~OFIFG; for(i=0;i<100;i++) _NOP(); } while((IFG1&OFIFG)!=0); IFG1&=~OFIFG; }
串口接收机
这里主要对main函数中的操作进行了调整,其他的可以选择性的注释,接收机只用到了这些文件
- main.c
- uart.c
- delay.c
- oled.c
oled.c
同上,
delay.c
同上,
uart.c
同上,其实上面发送的时候中断那里可以注释掉。这里加以说明
#include"uart.h" void init_uart0()//UCSWRST(默认置位)置位时才能调整控制寄存器参数 { P3SEL = 0x30; // P3.4,5 = USCI_A0 TXD/RXD UCA0CTL1 |= UCSSEL_2; // SMCLK UCA0BR0 = 65; // 1MHz 9600; (104)decimal = 0x068h UCA0BR1 = 3; // 1MHz 9600 UCA0MCTL = UCBRS0; // Modulation UCBRSx = 1 UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine** IE2 |= UCA0RXIE; // Enable USCI_A0 RX interrupt } void send_data(uchar Data) { UCA0TXBUF = Data; // TX -> RXed character while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready? } void send_string(char *p) { uchar len; len=strlen(p); while(len) { send_data(*p); p++; len--; } }
main.c
#include <io430f249.h> #include "oled.h" #include "stdio.h" #include "stdint.h" #include "DataType.h" #include "Clock.h" #include "Delay.h" #include "Timer.h" #include "uart.h" ulint F1=0; int i=0; uint cnt=0; uchar tmp2[5]; int main( void ) { WDTCTL = WDTPW + WDTHOLD; //Int_Clk(); init_uart0(); OLED_Init(); OLED_Clear(); OLED_ShowCHinese(8,0,2); OLED_ShowCHinese(24,0,3); OLED_ShowChar(40,0,':'); OLED_ShowCHinese(0,6,4); OLED_ShowCHinese(16,6,5); OLED_ShowCHinese(32,6,8); OLED_ShowCHinese(48,6,9); //Int_TimerA(); //Int_TimerB(); _EINT(); //DelaymS(100); //send_string("123456785678990-\r\n"); //测试 while(1) { //F1=f; OLED_ShowString(104,0,"hz"); //jisuan(); //sprintf((char *)tmp2,"%4d",F1); if(cnt==4){ cnt=0; send_string(tmp2); OLED_ShowChar(48,0,tmp2[0]); OLED_ShowChar(56,0,tmp2[1]); OLED_ShowChar(64,0,tmp2[2]); OLED_ShowChar(72,0,tmp2[3]); //OLED_ShowString(48,0,tmp2); } //Delay250uS(200); } } #pragma vector=USCIAB0RX_VECTOR __interrupt void usart0_rx (void) { uchar c; //RxFlag if(UCA0RXIFG==1) { UCA0TXBUF = UCA0RXBUF; //UCA0RXIFG =0; c= UCA0RXBUF; if( cnt < 5 && c != '\0') //判断接收结束 { if(cnt == 0) for(i = 0; i < 5;i ++) //清空接收缓存 tmp2[i] = '0'; if(c-'0'==0) tmp2[cnt] = '0'; else tmp2[cnt] = c; //将数据存入存储 cnt++; } else { cnt = 0; } } /**/ }