DDS AD9958 AD9959原理图STM32程序 -

#include "stm32f10x.h"
#include "stdint.h"
#include "Delay.h"
#include "Timer.h"
#include "InternalFlash.h"
#include "AD9958.h"
/* 晶振频率 */
#define AD9958_CRYSTAL_OSCILLATOR 25000000
AD9958TypeDef Extern_ad9958_data;
int32_t Extern_channel0_frequency_rising_delta = 0; /* 扫频模式下上升时每次改变的频率量 */
int32_t Extern_channel0_frequency_falling_delta = 0; /* 扫频模式下下降时每次改变的频率量 */
int32_t Extern_channel0_frequency_start = 0; /* 扫频模式下起始频率 */
int32_t Extern_channel0_frequency_stop = 0; /* 扫频模式下上升终止频率 */
int32_t Extern_channel0_frequency_now = 0; /* 扫频模式下上升实时频率 */
int32_t Extern_channel1_frequency_rising_delta = 0; /* 扫频模式下上升时每次改变的频率量 */
int32_t Extern_channel1_frequency_falling_delta = 0; /* 扫频模式下下降时每次改变的频率量 */
int32_t Extern_channel1_frequency_start = 0; /* 扫频模式下起始频率 */
int32_t Extern_channel1_frequency_stop = 0; /* 扫频模式下上升终止频率 */
int32_t Extern_channel1_frequency_now = 0; /* 扫频模式下上升实时频率 */
/*
* Return: void
* Parameters: void
* Description: AD9958初始化
*/
void ad9958Init(void)
{
uint32_t data[20] = {0};
Union32_t temp;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
/* 关闭PB3 JTAG功能 */
GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
GPIO_InitStructure.GPIO_Pin = AD9958_SDIO_0 | AD9958_SDIO_1 | AD9958_SDIO_2 | AD9958_SDIO_3 \
| AD9958_DIN_P0 | AD9958_DIN_P1 | AD9958_DIN_P2 | AD9958_DIN_P3 \
| AD9958_MASTER_RESET | AD9958_SCLK | AD9958_CS | AD9958_IO_UPDATA | AD9958_CLK_SEL ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
AD9958_IO_UPDATA_0();
AD9958_CS_1();
AD9958_SCLK_1();
AD9958_MASTER_RESET_0();
AD9958_CLK_SEL_1();
AD9958_SDIO_0_1();
AD9958_SDIO_1_1();
AD9958_SDIO_2_1();
AD9958_SDIO_3_1();
AD9958_DINP_0_1();
AD9958_DINP_1_1();
AD9958_DINP_2_1();
AD9958_DINP_3_1();
internalFlashRead(0, data, 20);
if(data[19] != 0x12345678)
{
temp.Float_number = Extern_ad9958_data.channel[0].frequency = 7.0f;
data[0] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].phase = 0.0f;
data[1] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].amplitude = 1.0f;
data[2] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].frequency_falling_blanking_time = 10.0f;
data[3] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].frequency_rising_blanking_time = 10.0f;
data[4] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].frequency_falling_delta = 1.0f;
data[5] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].frequency_rising_delta = 20.0f;
data[6] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].frequency_start = 0.0f;
data[7] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[0].frequency_stop = 1000000.0f;
data[8] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency = 1.0f;
data[10] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].phase = 90.0f;
data[11] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].amplitude = 1.0f;
data[12] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency_falling_blanking_time = 1000.0f;
data[13] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency_rising_blanking_time = 1000.0f;
data[14] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency_falling_delta = 10.0f;
data[15] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency_rising_delta = 10.0f;
data[16] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency_start = 50.0f;
data[17] = temp.Uint32_number;
temp.Float_number = Extern_ad9958_data.channel[1].frequency_stop = 1000.0f;
data[18] = temp.Uint32_number;
data[19] = 0x12345678;
internalFlashWrite(0, data, 20);
}
else
{
temp.Uint32_number = data[0];
Extern_ad9958_data.channel[0].frequency = temp.Float_number;
temp.Uint32_number = data[1];
Extern_ad9958_data.channel[0].phase = temp.Float_number;
temp.Uint32_number = data[2];
Extern_ad9958_data.channel[0].amplitude = temp.Float_number;
temp.Uint32_number = data[3];
Extern_ad9958_data.channel[0].frequency_falling_blanking_time = temp.Float_number;
temp.Uint32_number = data[4];
Extern_ad9958_data.channel[0].frequency_rising_blanking_time = temp.Float_number;
temp.Uint32_number = data[5];
Extern_ad9958_data.channel[0].frequency_falling_delta = temp.Float_number;
temp.Uint32_number = data[6];
Extern_ad9958_data.channel[0].frequency_rising_delta = temp.Float_number;
temp.Uint32_number = data[7];
Extern_ad9958_data.channel[0].frequency_start = temp.Float_number;
temp.Uint32_number = data[8];
Extern_ad9958_data.channel[0].frequency_stop = temp.Float_number;
temp.Uint32_number = data[10];
Extern_ad9958_data.channel[1].frequency = temp.Float_number;
temp.Uint32_number = data[11];
Extern_ad9958_data.channel[1].phase = temp.Float_number;
temp.Uint32_number = data[12];
Extern_ad9958_data.channel[1].amplitude = temp.Float_number;
temp.Uint32_number = data[13];
Extern_ad9958_data.channel[1].frequency_falling_blanking_time = temp.Float_number;
temp.Uint32_number = data[14];
Extern_ad9958_data.channel[1].frequency_rising_blanking_time = temp.Float_number;
temp.Uint32_number = data[15];
Extern_ad9958_data.channel[1].frequency_falling_delta = temp.Float_number;
temp.Uint32_number = data[16];
Extern_ad9958_data.channel[1].frequency_rising_delta = temp.Float_number;
temp.Uint32_number = data[17];
Extern_ad9958_data.channel[1].frequency_start = temp.Float_number;
temp.Uint32_number = data[18];
Extern_ad9958_data.channel[1].frequency_stop = temp.Float_number;
}
/* 开机后必须对AD9958进行复位 */
AD9958_RESET();
/* 设置20倍频 */
ad9958SetPLLDividerRatio(20);
/* 选择通道0 */
ad9958ChoiceChannel(AD9958_CHANNEL_0);
/* 设置频率1000 Hz */
ad9958SetFrequency(Extern_ad9958_data.channel[0].frequency);
/* 设置相位90度 */
ad9958SetPhase(Extern_ad9958_data.channel[0].phase);
/* 设置衰减系数1.0 */
ad9958SetAmplitude(Extern_ad9958_data.channel[0].amplitude);
/* 选择通道1 */
ad9958ChoiceChannel(AD9958_CHANNEL_1);
/* 设置频率1000 Hz */
ad9958SetFrequency(Extern_ad9958_data.channel[1].frequency);
/* 设置相位90度 */
ad9958SetPhase(Extern_ad9958_data.channel[1].phase);
/* 设置衰减系数1.0 */
ad9958SetAmplitude(Extern_ad9958_data.channel[1].amplitude);
}
/*
* Return: void
* Parameters: Data: 要写入的字节
* Description: 向AD9958写入一个字节
*/
void ad9958WriteByte(uint8_t Data)
{
uint8_t mask;
for(mask=0x80; mask; mask>>=1)
{
AD9958_SCLK_0();
if(Data & mask)
AD9958_SDIO_0_1();
else
AD9958_SDIO_0_0();
AD9958_SCLK_1();
}
AD9958_SDIO_0_1();
}
/*
* Return: 当前读取到的一个字节
* Parameters: void
* Description: 从AD9958读取一个字节
*/
uint8_t ad9958ReadByte(void)
{
uint8_t mask, data = 0;
AD9958_SDIO_0_1();
for(mask=0x80; mask; mask>>=1)
{
AD9958_SCLK_0();
if(AD9958_SDIO_0_VALUE())
data |= mask;
AD9958_SCLK_1();
}
return data;
}
/*
* Return: 0: 成功; 1: 失败
* Parameters: Reg: 寄存器地址; Data: 缓存指针; Length: 长度
* Description: 向AD9958写入一组数据
*/
uint8_t ad9958WriteDatas(uint8_t Reg, uint8_t * Data, uint16_t Length)
{
uint16_t i = 0;
AD9958_SDIO_3_0();
AD9958_CS_0();
ad9958WriteByte(Reg);
for(i=0; i<Length; ++i)
{
ad9958WriteByte(Data[i]);
}
AD9958_CS_1();
AD9958_SDIO_3_1();
/* 控制AD9958数据更新 */
AD9958_UPDATA();
return 0;
}
/*
* Return: 0: 成功; 1: 失败
* Parameters: Reg: 寄存器地址; Data: 缓存指针; Length: 长度
* Description: 向AD9958读取一组数据
*/
uint8_t ad9958ReadDatas(uint8_t Reg, uint8_t * Data, uint16_t Length)
{
uint16_t i = 0;
AD9958_SDIO_3_0();
AD9958_CS_0();
ad9958WriteByte(Reg | 0x80);
for(i=0; i<Length; ++i)
{
Data[i] = ad9958ReadByte();
}
AD9958_CS_1();
AD9958_SDIO_3_1();
return 0;
}
/*
* Return: void
* Parameters: Channel: 通道序号; Mode: 扫频模式（0：关闭扫频、 1：MCU模拟扫频、 2：AD9958硬件扫频）
* Description: 设置AD9958扫频模式
*/
void ad9958FrequencyLinearSweepOpen(AD9958ChannelOrder_TypeDef Channel, uint8_t Mode)
{
float time = 0.0f;
if(Mode == 1)
{
/* 设置上升扫描频率步进 */
Extern_channel0_frequency_rising_delta = Extern_ad9958_data.channel[0].frequency_rising_delta;
/* 设置下降扫描频率步进 */
Extern_channel0_frequency_falling_delta = Extern_ad9958_data.channel[0].frequency_falling_delta;
/* 设置扫描开始频率 */
Extern_channel0_frequency_start = Extern_ad9958_data.channel[0].frequency_start;
/* 设置扫描开始频率 */
Extern_channel0_frequency_now = Extern_ad9958_data.channel[0].frequency_start;
/* 设置扫描最大终止频率 */
Extern_channel0_frequency_stop = Extern_ad9958_data.channel[0].frequency_stop;
/* 设置上升扫描频率步进 */
Extern_channel1_frequency_rising_delta = Extern_ad9958_data.channel[1].frequency_rising_delta;
/* 设置下降扫描频率步进 */
Extern_channel1_frequency_falling_delta = Extern_ad9958_data.channel[1].frequency_falling_delta;
/* 设置扫描开始频率 */
Extern_channel1_frequency_start = Extern_ad9958_data.channel[1].frequency_start;
/* 设置扫描开始频率 */
Extern_channel1_frequency_now = Extern_ad9958_data.channel[1].frequency_start;
/* 设置扫描最大终止频率 */
Extern_channel1_frequency_stop = Extern_ad9958_data.channel[1].frequency_stop;
/* 关闭AD9958硬件扫频 */
TIM2->DIER &= (uint16_t)~TIM_IT_Update;
/* 开启MCU模拟扫频 */
if(Channel & AD9958_CHANNEL_0)
{
timerSetTime(TIM3, Extern_ad9958_data.channel[0].frequency_rising_blanking_time);
TIM3->DIER |= TIM_IT_Update;
}
if(Channel & AD9958_CHANNEL_1)
{
timerSetTime(TIM4, Extern_ad9958_data.channel[1].frequency_rising_blanking_time);
TIM4->DIER |= TIM_IT_Update;
}
}
else if(Mode == 2)
{
ad9958ChoiceChannel(Channel);
/* 设置上升与下降扫频时间间隔 */
ad9958SetBlankingTimeNs(Extern_ad9958_data.channel[0].frequency_rising_blanking_time, Extern_ad9958_data.channel[0].frequency_falling_blanking_time);
/* 设置上升扫频频率步进 */
ad9958SetFrequencyRisingLSR(Extern_ad9958_data.channel[0].frequency_rising_delta);
/* 设置下降扫频频率步进 */
ad9958SetFrequencyFallingLSR(Extern_ad9958_data.channel[0].frequency_falling_delta);
/* 设置扫频开始频率 */
ad9958SetFrequency(Extern_ad9958_data.channel[0].frequency_start);
/* 设置扫频最大终止频率 */
ad9958SetChannelWord(Extern_ad9958_data.channel[0].frequency_stop, AD9958_FREQUENCY, 1);
/* 设置数字调制阶数 */
ad9958ModulationLevelSelection(TWO_LEVEL_MODULATION);
/* 设置硬件扫频模式与设置扫描位 */
ad9958ModulationTypeConfiguration(AD9958_FREQUENCY, LINEAR_OPEN);
time = Extern_ad9958_data.channel[0].frequency_stop * Extern_ad9958_data.channel[0].frequency_rising_blanking_time / Extern_ad9958_data.channel[0].frequency_rising_delta * 0.001;
time += Extern_ad9958_data.channel[0].frequency_stop * Extern_ad9958_data.channel[0].frequency_falling_blanking_time / Extern_ad9958_data.channel[0].frequency_falling_delta * 0.001;
/* 设置扫频上升与下降的切换时间 */
timerSetTime(TIM2, time);
/* 关闭MCU模拟扫频 */
if(Channel & AD9958_CHANNEL_0)
TIM3->DIER &= (uint16_t)~TIM_IT_Update;
if(Channel & AD9958_CHANNEL_1)
TIM4->DIER &= (uint16_t)~TIM_IT_Update;
/* 开启AD9958硬件扫频 */
TIM2->DIER |= TIM_IT_Update;
}
else
{
/* 关闭AD9958硬件扫频 */
TIM2->DIER &= (uint16_t)~TIM_IT_Update;
/* 关闭MCU模拟扫频 */
TIM3->DIER &= (uint16_t)~TIM_IT_Update;
TIM4->DIER &= (uint16_t)~TIM_IT_Update;
}
}
/*
* Return: void
* Parameters: Channel: 通道序号(AD9958_CHANNEL_0、 AD9958_CHANNEL_1、 AD9958_CHANNEL_0_AND_1)
* Description: 选择当前要操作的通道
*/
void ad9958ChoiceChannel(AD9958ChannelOrder_TypeDef Channel)
{
uint8_t data[1] = {0};
data[0] = Channel & 0xF0;
ad9958WriteDatas(0x00, data, 1);
}
/*
* Return: void
* Parameters: Data: 倍频系数(0 ~~~ 63)
* Description: 设置主频的倍频系数
*/
void ad9958SetPLLDividerRatio(uint8_t Data)
{
uint8_t data[3] = {0, 0, 0};
Data %= 64;
/* 设置主频倍频系数 */
Extern_ad9958_data.pll_divider_ratio = Data;
/* 计算系统频率 */
Extern_ad9958_data.system_clock = Extern_ad9958_data.pll_divider_ratio * AD9958_CRYSTAL_OSCILLATOR;
/* 计算主频因子 */
Extern_ad9958_data._2_32_divide_system_clock_and_pll_divider_ratio = 4294967296.0 / Extern_ad9958_data.system_clock;
data[0] = ((uint8_t)Extern_ad9958_data.pll_divider_ratio << 2) | 0x80;
data[1] = 0x51;
ad9958WriteDatas(0x01, data, 3);
}
/*
* Return: void
* Parameters: Frequency: 频率值(0.116416 ~~~ 200000000.0)
* Description: 设置要输出的频率
*/
void ad9958SetFrequency(float Frequency)
{
uint32_t frequency_tuning_word;
uint8_t data[4] = {0, 0, 0, 0};
/* frequency_tuning_word = Frequency * 2^32 / (SystemClock * PLLDividerRatio) */
frequency_tuning_word = Frequency * Extern_ad9958_data._2_32_divide_system_clock_and_pll_divider_ratio;
data[0] = frequency_tuning_word >> 24;
data[1] = frequency_tuning_word >> 16;
data[2] = frequency_tuning_word >> 8;
data[3] = frequency_tuning_word >> 0;
ad9958WriteDatas(0x04, data, 4);
}
/*
* Return: void
* Parameters: Phase: 相位值(0.0 ~~~ 360.0)
* Description: 设置要输出的相位
*/
void ad9958SetPhase(float Phase)
{
uint16_t phase_offset_word;
uint8_t data[2] = {0, 0};
/* phase_offset_word = Phase * 2^14 / 360 */
phase_offset_word = Phase / 360.0f * 16384.0f;
phase_offset_word &= 0x3FFF;
data[0] = phase_offset_word >> 8;
data[1] = phase_offset_word >> 0;
ad9958WriteDatas(0x05, data, 2);
}
/*
* Return: void
* Parameters: Amplitude: 幅度衰减系数(0.0 ~~~ 1.0)
* Description: 设置幅度衰减系数
*/
void ad9958SetAmplitude(float Amplitude)
{
uint16_t amplitude_scale_factor;
uint8_t data[3] = {0, 0, 0};
/* amplitude_scale_factor = Amplitude * 2^10 */
amplitude_scale_factor = Amplitude * 1023.0f;
amplitude_scale_factor &= 0x0003FF;
data[1] = (amplitude_scale_factor >> 8) | 0x10;
data[2] = amplitude_scale_factor >> 0;
ad9958WriteDatas(0x06, data, 3);
}
/*
* Return: void
* Parameters: Level: 进制选择（0 ~ 3）
* Description: 设置调制进制(2, 4, 8, 16)
*/
void ad9958ModulationLevelSelection(ModulationLevel_TypeDef Level)
{
uint8_t data[3] = {0, 0, 0};
Level &= 0x03;
data[0] = ((uint8_t)Extern_ad9958_data.pll_divider_ratio << 2) | 0x80;
data[1] = 0x50 | Level;
ad9958WriteDatas(0x01, data, 3);
}
/*
* Return: void
* Parameters: Mode: 调制模式（AD9958_AMPLITUDE， AD9958_FREQUENCY， AD9958_PHASE）
* Description: 设置调制模式
*/
void ad9958ModulationTypeConfiguration(ModulationConfiguration_TypeDef Mode, AD9958LinearSweepState_TypeDef NewState)
{
uint8_t data[4] = {0, 0, 0};
NewState &= 0x01;
data[0] = Mode << 6;
data[1] = 0x03 | (NewState << 6);
data[2] = 0x00;
ad9958WriteDatas(0x03, data, 3);
}
/*
* Return: void
* Parameters: Rising: 上升时间隔时间（纳秒）; Falling: 下降时间隔时间（纳秒）
* Description: 设置扫描间隔时间
*/
void ad9958SetBlankingTimeNs(float Rising, float Falling)
{
uint8_t data[2] = {0, 0};
Falling *= (Extern_ad9958_data.system_clock / 4000000000.0f);
Rising *= (Extern_ad9958_data.system_clock / 4000000000.0f);
if(Falling < 1)
Falling = 1;
else if(Falling > 255)
Falling = 255;
if(Rising < 1)
Rising = 1;
else if(Rising > 255)
Rising = 255;
data[0] = Falling;
data[1] = Rising;
ad9958WriteDatas(0x07, data, 2);
}
/*
* Return: void
* Parameters: Frequency: 频率值(0.116416 ~~~ 200000000.0)
* Description: 设置上升扫描每次增加的频率
*/
void ad9958SetFrequencyRisingLSR(float Frequency)
{
uint32_t frequency_tuning_word;
uint8_t data[4] = {0, 0, 0, 0};
/* frequency_tuning_word = Frequency * 2^32 / (SystemClock * PLLDividerRatio) */
frequency_tuning_word = Frequency * Extern_ad9958_data._2_32_divide_system_clock_and_pll_divider_ratio;
data[0] = frequency_tuning_word >> 24;
data[1] = frequency_tuning_word >> 16;
data[2] = frequency_tuning_word >> 8;
data[3] = frequency_tuning_word >> 0;
ad9958WriteDatas(0x08, data, 4);
}
/*
* Return: void
* Parameters: Frequency: 频率值(0.116416 ~~~ 200000000.0)
* Description: 设置下降扫描每次减少的频率
*/
void ad9958SetFrequencyFallingLSR(float Frequency)
{
uint32_t frequency_tuning_word;
uint8_t data[4] = {0, 0, 0, 0};
/* frequency_tuning_word = Frequency * 2^32 / (SystemClock * PLLDividerRatio) */
frequency_tuning_word = Frequency * Extern_ad9958_data._2_32_divide_system_clock_and_pll_divider_ratio;
data[0] = frequency_tuning_word >> 24;
data[1] = frequency_tuning_word >> 16;
data[2] = frequency_tuning_word >> 8;
data[3] = frequency_tuning_word >> 0;
ad9958WriteDatas(0x09, data, 4);
}
/*
* Return: void
* Parameters: Data: 数据; Mode: 调制模式; Channel: 备用通寄存器
* Description: 设置扫描终止频率
*/
void ad9958SetChannelWord(float Data, ModulationConfiguration_TypeDef Mode, uint8_t CW_number)
{
uint32_t word = 0;
uint8_t data[4] = {0, 0, 0, 0};
switch(Mode)
{
/* amplitude_scale_factor = Amplitude * 2^10 */
case AD9958_AMPLITUDE: word = (uint32_t)(Data * 1023.0f) << 22; break;
/* frequency_tuning_word = Frequency * 2^32 / (SystemClock * PLLDividerRatio) */
case AD9958_FREQUENCY: word = Data * Extern_ad9958_data._2_32_divide_system_clock_and_pll_divider_ratio; break;
/* phase_offset_word = Phase * 2^14 / 360 */
case AD9958_PHASE: word = (uint32_t)(Data / 360.0f * 16384.0f) << 18; break;
default: break;
}
data[0] = word >> 24;
data[1] = word >> 16;
data[2] = word >> 8;
data[3] = word >> 0;
ad9958WriteDatas(0x09 + CW_number, data, 4);
}

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