//================AD9834.h======================//
/*-----------------------------------------------------
AD9834驱动程序
STM32固件函数库V2.0
2011.3.29
-------------------------------------------------------*/
#ifndef __AD9834_H
#define __AD9834_H
#include \"stm32f10x_lib.h\"
#define Triangle_Wave 0x2002
#define Sine_Wave 0x2028
/* AD9834晶振频率 */
#define AD9834_SYSTEM_COLCK 50000000UL
/* AD9834 控制引脚 */
#define AD9834_Control_Port GPIOC
#define AD9834_FSYNC GPIO_Pin_6
#define AD9834_SCLK GPIO_Pin_7
#define AD9834_SDATA GPIO_Pin_8
#define AD9834_RESET GPIO_Pin_9
#define
AD9834_FSYNC_SET GPIO_SetBits(AD9834_Control_Port ,AD9834_FSYNC)
#define
AD9834_FSYNC_CLR GPIO_ResetBits(AD9834_Control_Port ,AD9834_FSYNC)
#define
AD9834_SCLK_SET GPIO_SetBits(AD9834_Control_Port ,AD9834_SCLK)
#define
AD9834_SCLK_CLR GPIO_ResetBits(AD9834_Control_Port ,AD9834_SCLK)
#define
AD9834_SDATA_SET GPIO_SetBits(AD9834_Control_Port ,AD9834_SDATA)
#define
AD9834_SDATA_CLR GPIO_ResetBits(AD9834_Control_Port ,AD9834_SDATA)
#define
AD9834_RESET_SET GPIO_SetBits(AD9834_Control_Port ,AD9834_RESET)
#define
AD9834_RESET_CLR #define FREQ_0 #define FREQ_1 #define DB15 #define DB14 #define DB13 #define DB12 #define DB11 #define DB10 #define DB9 GPIO_ResetBits(AD9834_Control_Port ,AD9834_RESET)
0
1
0
0
B28
HLB
FSEL
PSEL
PIN_SW
#define DB8 RESET
#define DB7 SLEEP1
#define DB6 SLEEP12
#define DB5 OPBITEN
#define DB4 SIGN_PIB
#define DB3 DIV2
#define DB2 0
#define DB1 MODE
#define DB0 0
#define
CONTROL_REGISTER (DB15<<15)|(DB14<<14)|(DB13<<13)|(DB12<<12)|(DB11<<11)|(DB10<<10)\\
|(DB9<<9)|(DB8<<8)|(DB7<<7)|(DB6<<6)|(DB5<<5)|(DB4<<4)|(DB3<<3)|(DB2<<2)|(DB1<<1)|(DB0<<0)
/* AD9834函数声明 */
extern void AD9834_Write_16Bits(unsigned int data) ; //写一个字到AD9834
extern void AD9834_Select_Wave(unsigned int initdata) ; //选择输出波形
extern void Init_AD9834() ;//初始化配置
extern void AD9834_Set_Freq(unsigned char freq_number, unsigned long freq) ;//选择输出寄存器和输出频率值
#endif /* AD9834_H */
//================================================================//
//====================AD9834.c====================================//
#include \"stm32f10x_lib.h\"
#include \"AD9834.h\"
/****************************************************************
函数名称: AD9834_Write_16Bits
功 能: 向AD9834写入16为数据
参 数: data -- 要写入的16位数据
返回值 : 无
*****************************************************************/
void AD9834_Write_16Bits(unsigned int data)
{
unsigned char i = 0 ;
AD9834_SCLK_SET ;
AD9834_FSYNC_CLR ;
for(i=0 ;i<16 ;i++)
{
if(data & 0x8000)
AD9834_SDATA_SET ;
else
AD9834_SDATA_CLR ;
AD9834_SCLK_CLR ;
data <<= 1 ;
AD9834_SCLK_SET ;
}
AD9834_FSYNC_SET ;
}
/***********************************************************************************
函数名称：AD9834_Select_Wave
功 能：软件为控制，
--------------------------------------------------
IOUT正弦波 ，SIGNBITOUT方波 ，写FREQREG0 ，写PHASE0
ad9834_write_16bit(0x2028) 一次性写FREQREG0
ad9834_write_16bit(0x0038) 单独改写FREQREG0的LSB
ad9834_write_16bit(0x1038) 单独改写FREQREG0的MSB
--------------------------------------------------
IOUT三角波 ，写PHASE0
ad9834_write_16bit(0x2002) 一次性写FREQREG0
ad9834_write_16bit(0x0002) 单独改写FREQREG0的LSB
ad9834_write_16bit(0x1008) 单独改写FREQREG0的MSB
参 数：initdata -- 要输入的命令
返回值 ：无
************************************************************************************/
void AD9834_Select_Wave(unsigned int initdata)
{
AD9834_FSYNC_SET;
AD9834_SCLK_SET;
AD9834_RESET_SET;
AD9834_RESET_SET;
AD9834_RESET_CLR;
AD9834_Write_16Bits(initdata);
}
/****************************************************************
函数名称: Init_AD9834
功 能: 初始化AD9834控制引脚
参 数: 无
返回值 : 无
*****************************************************************/
void Init_AD9834()
{
GPIO_InitTypeDef GPIO_InitStructure ;
GPIO_InitStructure.GPIO_Pin = AD9834_FSYNC | AD9834_SCLK AD9834_SDATA | AD9834_RESET ;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP ;
GPIO_Init(AD9834_Control_Port ,&GPIO_InitStructure) ;
}
/****************************************************************
函数名称: AD9834_Set_Freq
功 能: 设置频率值
参 数: freq_number -- 要写入的平率寄存器(FREQ_0或FREQ_1)
|
freq -- 频率值 (Freq_value(value)=Freq_data(data)*FCLK/2^28)
返回值 : 无
*****************************************************************/
void AD9834_Set_Freq(unsigned char freq_number, unsigned long freq)
{
unsigned long FREQREG = (unsigned
long)(268435456.0/AD9834_SYSTEM_COLCK*freq);
unsigned int FREQREG_LSB_14BIT = (unsigned int)FREQREG;
unsigned int FREQREG_MSB_14BIT = (unsigned int)(FREQREG>>14);
if(freq_number == FREQ_0)
{
FREQREG_LSB_14BIT &= ~(1U<<15);
FREQREG_LSB_14BIT |= 1<<14;
FREQREG_MSB_14BIT &= ~(1U<<15);
FREQREG_MSB_14BIT |= 1<<14;
}
else
{
FREQREG_LSB_14BIT &= ~(1<<14);
FREQREG_LSB_14BIT |= 1U<<15;
FREQREG_MSB_14BIT &= ~(1<<14);
FREQREG_MSB_14BIT |= 1U<<15;
}
AD9834_Write_16Bits(FREQREG_LSB_14BIT);
AD9834_Write_16Bits(FREQREG_MSB_14BIT);
}
//============================================================//
/* 注：使用时先调用初始化函数初始化IO配置，然后调用AD9834_Select_Wave()选择波形，最后选择频率值即可输出。 */
写得不是很好，拿出来分享一下，希望大家能够提点建议！
