基于单片机的信号发生器的设计与实现

附录#include"delay.h"#include"sys.h"#include"usart.h"#include"AD9833.h"#include"lcd1602.h" unsignedchark_num=0; unsignedlongBujinData=1; unsignedlongFreqData=100; unsignedintAmpData=100; unsignedcharWaveModle=2; unsignedcharflag_key,flag_show,flag_k1,flag_k2,flag_k3,flag_k4;/*************************************************函数:voidRCC_Configuration(void)功能:复位和时钟控制配置参数:无返回:无**************************************************/voidRCC_Configuration(void){ErrorStatusHSEStartUpStatus;//定义外部高速晶体启动状态枚举变量RCC_DeInit();//复位RCC外部设备寄存器到默认值RCC_HSEConfig(RCC_HSE_ON);//打开外部高速晶振HSEStartUpStatus=RCC_WaitForHSEStartUp();//等待外部高速时钟准备好if(HSEStartUpStatus==SUCCESS)//外部高速时钟已经准别好{FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);//开启FLASH预读缓冲功能，加速FLASH的读取。所有程序中必须的用法.位置：RCC初始化子函数里面，时钟起振之后FLASH_SetLatency(FLASH_Latency_2);//flash操作的延时 RCC_HCLKConfig(RCC_SYSCLK_Div1);//配置AHB(HCLK)时钟等于==SYSCLKRCC_PCLK2Config(RCC_HCLK_Div1);//配置APB2(PCLK2)钟==AHB时钟RCC_PCLK1Config(RCC_HCLK_Div2);//配置APB1(PCLK1)钟==AHB1/2时钟RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9);//配置PLL时钟==外部高速晶体时钟*9=72MHzRCC_PLLCmd(ENABLE);//使能PLL时钟while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY)==RESET)//等待PLL时钟就绪{}RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);//配置系统时钟=PLL时钟while(RCC_GetSYSCLKSource()!=0x08)//检查PLL时钟是否作为系统时钟{}}RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO,ENABLE);//允许GPIOB、AFIO时钟}/*************************************************函数:voidGPIO_Configuration(void）功能:GPIO配置 PB11PB10PB0PA7PA6PA5PA4PA3参数:无返回:无**************************************************/voidGPIO_Configuration(void){GPIO_InitTypeDefGPIO_InitStructure;//定义GPIO初始化结构体 GPIO_InitStructure.GPIO_Pin=GPIO_Pin_11|GPIO_Pin_10|GPIO_Pin_1|GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPU; //GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_InitStructure); /*PC6*/}voidKey(){ if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_0)==Bit_RESET) { delay_ms(5); if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_0)==Bit_RESET&&flag_k1==0) { flag_key=1; flag_k1=1; } } else { flag_k1=0; } if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1)==Bit_RESET) { delay_ms(5); if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1)==Bit_RESET&&flag_k2==0) { flag_key=2; flag_k2=1; } } else { flag_k2=0; } if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_10)==Bit_RESET) { delay_ms(5); if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_10)==Bit_RESET&&flag_k3==0) { flag_key=3; flag_k3=1; } } else { flag_k3=0; } if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_11)==Bit_RESET) { delay_ms(5); if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_11)==Bit_RESET&&flag_k4==0) { flag_key=4; flag_k4=1; } } else { flag_k4=0; }}intmain(void){ unsignedchardat1[]="Setf"; unsignedchardat2[]="sin"; unsignedchardat3[]="HZ"; unsignedchardat4[]="AM="; unsignedchardat5[]="SetA"; unsignedchardat6[]="SetB"; unsignedchardat7[]="Tri"; unsignedchardat8[]="Squ"; unsignedchardat9[]="KHZ"; RCC_Configuration(); GPIO_Configuration();// uart_init(115200); //串口初始化为115200 delay_init(); delay_ms(500); LCD1602_Init(); delay_ms(50); DispStrAt(dat1,0,0); DispStrAt(dat8,6,0); DispDecSpaceAt(FreqData,0,1,7); DispStrAt(dat3,7,1); DispDecSpaceAt(BujinData,10,0,6); DispDecSpaceAt(AmpData/3.3,13,1,3); DispStrAt(dat4,10,1);AD9833_Init_GPIO();AD9833_WaveSeting(FreqData,0,WaveModle,0);//2KHz, 频率寄存器0，正弦波输出,初相位0AD9833_AmpSet(AmpData); //设置幅值，幅值最大255 while(1) { // DelayMs(100); //延时100ms Key(); if(flag_key==3) { flag_key=0; k_num++; if(k_num==3) k_num=0; if(k_num==0) DispStrAt(dat1,0,0); if(k_num==1) DispStrAt(dat5,0,0); if(k_num==2) DispStrAt(dat6,0,0); } elseif(flag_key==4) { flag_key=0; WaveModle=WaveModle+1; if(WaveModle==3)WaveModle=0; if(WaveModle==1){AD9833_WaveSeting(FreqData,0,SIN_WAVE,0);DispStrAt(dat2,6,0);} elseif(WaveModle==0){AD9833_WaveSeting(FreqData,0,TRI_WAVE,0);DispStrAt(dat7,6,0);} elseif(WaveModle==2){AD9833_WaveSeting(FreqData,0,SQU_WAVE,0);DispStrAt(dat8,6,0);} } if(k_num==0) { if(flag_key==1) { flag_key=0; if(FreqData<12000000) FreqData=FreqData+BujinData; AD9833_WaveSeting(FreqData,0,WaveModle,0); if(FreqData<10000000) { DispDecSpaceAt(FreqData,0,1,7);DispStrAt(dat3,7,1); } else{ DispDecSpaceAt(FreqData/1000,0,1,6);DispStrAt(dat9,6,1); }// while(key1==0); } elseif(flag_key==2) { flag_key=0; if(FreqData>1) FreqData=FreqData-BujinData; if(FreqData>12000000) FreqData=0; AD9833_WaveSeting(FreqData,0,WaveModle,0); if(FreqData<10000000) { DispDecSpaceAt(FreqData,0,1,7);DispStrAt(dat3,7,1); } else{ DispDecSpaceAt(FreqData/1000,0,1,6);DispStrAt(dat9,6,1); }// while(key2==0); } } elseif(k_num==1) { if(flag_key==1) { flag_key=0; if(AmpData<165) AmpData=AmpData+3.3; AD9833_AmpSet(AmpData); DispDecSpaceAt(AmpData/3.3,13,1,3);DispStrAt(dat4,10,1);// while(!key1); } if(flag_key==2) { flag_key=0; { if(AmpData>3.3) AmpData=AmpData-3.3; } AD9833_AmpSet(AmpData); DispDecSpaceAt(AmpData/3.3,13,1,3);DispStrAt(dat4,10,1);// while(!key2);