ad9851输出的频率一直是30.12M，求做过的大神帮忙看一下，我是第一次搞这个。

醉酒的孩子

void Delay(vu32 us) { unsigned char uscnt; uscnt=us>>1; while(--uscnt); } void AD9851_GPIOC_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOC,&GPIO_InitStructure); } void AD9851_GPIOD_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOD,&GPIO_InitStructure); } //---------------------------------------------------// // ad9851复位并行 // //---------------------------------------------------// void AD9851_Reset(void) { AD9851_W_FLK_L; AD9851_FQ_UD_L; AD9851_RESET_L; AD9851_RESET_H; Delay(1); AD9851_RESET_L; Delay(1); } //***************************************************// // ad9851复位串行 // //---------------------------------------------------// void AD9851_Reset_Serial(void) { AD9851_W_FLK_L; AD9851_FQ_UD_L; AD9851_Write_Word(0X03); //rese AD9851_RESET_L; AD9851_RESET_H; Delay(1); AD9851_RESET_L; Delay(1); //w_clk AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; //fq_ud AD9851_FQ_UD_H; Delay(1); AD9851_FQ_UD_L; } void AD9851_Write_Word(unsigned char Word) { u16 Port_Data; Port_Data=Word; Port_Data=Port_Data<<8; GPIO_Write(GPIOD, Port_Data); Delay(1); AD9851_W_FLK_L; AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; } //***************************************************// // ad9851并行 写 // //---------------------------------------------------// void AD9851_WR_Parrel(unsigned char W0,double Frequence) { u8 Word; u32 Frequency_Hex; double Ratio; //Frequence=Frequence*180000000/4294967296; Ratio=4294967295/180 Frequence=Frequence/1000000; Frequence=Frequence*Ratio; Frequency_Hex=Frequence; Word=W0; AD9851_Write_Word(Word); Word=(Frequency_Hex>>24); AD9851_Write_Word(Word); Word=(Frequency_Hex>>16); AD9851_Write_Word(Word); Word=(Frequency_Hex>>8); AD9851_Write_Word(Word); Word=(Frequency_Hex>>0); AD9851_Write_Word(Word); AD9851_FQ_UD_L; AD9851_FQ_UD_H; Delay(1); AD9851_FQ_UD_L; } //***************************************************// // ad9851串行 写 // //---------------------------------------------------// void AD9851_WR_Serial(unsigned char W0,double Frequence) { u8 Word; u32 Frequency_Hex; //double Ratio; unsigned char i; Frequence=Frequence*180000000/4294967296; // Ratio=4294967295/180 // Frequence=Frequence/1000000; // Frequence=Frequence*Ratio; Frequency_Hex=Frequence; Word=(Frequency_Hex>>=0); for(i=0;i<8;i++) { if((Word>>i)&0x01) { AD9851_Bit_Set; } else { AD9851_Bit_Reset; } AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; } Word=(Frequency_Hex>>=8); for(i=0;i<8;i++) { if((Word>>i)&0x01) { AD9851_Bit_Set; } else { AD9851_Bit_Reset; } AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; } Word=(Frequency_Hex>>=16); for(i=0;i<8;i++) { if((Word>>i)&0x01) { AD9851_Bit_Set; } else { AD9851_Bit_Reset; } AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; } Word=(Frequency_Hex>>=24); for(i=0;i<8;i++) { if((Word>>i)&0x01) { AD9851_Bit_Set; } else { AD9851_Bit_Reset; } AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; } Word=W0; for(i=0;i<8;i++) { if((Word>>i)&0x01) { AD9851_Bit_Set; } else { AD9851_Bit_Reset; } AD9851_W_FLK_H; Delay(1); AD9851_W_FLK_L; } AD9851_FQ_UD_H; Delay(1); AD9851_FQ_UD_L; } void Sweep_Frequency(double Start_Frequency,double End_Frequency,unsigned int Sweep_Speed_10Ms) { double Frequency; unsigned int i; Frequency=Start_Frequency; do { AD9851_WR_Parrel(0x01,Frequency); for(i=Sweep_Speed_10Ms;i>0;i--) { Delay(10000); } Frequency=Frequency+20; } while(Frequency<=End_Frequency); } int main(void) { AD9851_GPIOD_Configuration(); AD9851_GPIOC_Configuration(); AD9851_Reset_Serial(); //AD9851_Reset(); GPIO_Write(GPIOC,0x0000); GPIO_Write(GPIOD,0x0000); // AD9851_WR_Parrel(0x02,1); AD9851_WR_Serial(0x01,1); //AD9851_WR_Parrel(0x11,100); while(1); } /******************AD9851.H**************/ #define AD9851_W_FLK_H GPIO_ResetBits(GPIOB,GPIO_Pin_6); #define AD9851_W_FLK_L GPIO_SetBits(GPIOB,GPIO_Pin_6); //?μ?ê?üD?????D?o?￡?é?éy??è·è?óDD§ #define AD9851_FQ_UD_L GPIO_SetBits(GPIOB,GPIO_Pin_7); #define AD9851_FQ_UD_H GPIO_ResetBits(GPIOB,GPIO_Pin_7); //?′????￡?0 #define AD9851_RESET_L GPIO_SetBits(GPIOB,GPIO_Pin_8); #define AD9851_RESET_H GPIO_ResetBits(GPIOB,GPIO_Pin_8); //′?DDê?è???￡?D7 #define AD9851_Bit_Set GPIO_SetBits(GPIOD,GPIO_Pin_14); #define AD9851_Bit_Reset GPIO_ResetBits(GPIOD,GPIO_Pin_14); void AD9851_Reset(void); void AD9851_Reset_Serial(void); void AD9851_Write_Word(unsigned char Word); void AD9851_WR_Parrel(unsigned char W0,double Frequence); void AD9851_WR_Serial(unsigned char W0,double Frequence); void Sweep_Frequency(double Start_Frequency,double End_Frequency,unsigned int Sweep_Speed_10Ms); void AD9851_GPIOC_Configuration(void); void AD9851_GPIOD_Configuration(void);

 

 

醉酒的孩子

自己来顶一下。。求大神们帮帮忙！

 

醉酒的孩子

我是小小菜鸟一个，望各位大神不吝赐教啊！

 

chunyang

建议你仔细阅读理解器件手册而不是贴一堆代码，阅读理解器件手册是电子工程师必须的职业基础。

 

youluo

9851网上程序较多。参照下别人的好不好。另外硬件检查下。