电赛总结（二）——AD芯片总结之音频处理芯片ADC8009

2022-10-09 21:32:03

一、特性参数

1、专门用来用音频处理的AD芯片

2、内部固定好8K的采样速率

3、8位AD芯片

二、内部结构图

三、芯片管脚图

四、管脚功能说明

管脚名称	功能
IN0~IN7	数据输入端
ABC	数据输入端口选择
ST	ST 为转换启动信号。当ST 上跳沿时，所有内部寄存器清零；下跳沿时，开始进行A/D 转换；在转换期间，ST 应保持低电平。
EOC	EOC 为转换结束信号。当EOC 为高电平时，表明转换结束；否则，表明正在进行A/D 转换
OE	OE为输出允许信号，用于控制三条输出锁存器向单片机输出转换得到的数据。OE＝1，输出转换得到的数据；OE＝0，输出数据线呈高阻状态。D7－D0 为数字量输出线。
D7－D0	数字量输出线
CLK	时钟输入信号线。因ADC0809的内部没有时钟电路，所需时钟信号必须由外界提供，通常使用频率为500KHZ
VREF（＋）	参考电压输入正极
VREF（－）	参考电压输入负极

五、STM32F103ZE驱动程序

#include "stm32f10x.h"

#define CLK GPIO_Pin_0

//#define B     GPIO_Pin_1

//#define C        GPIO_Pin_2

#define ALE GPIO_Pin_4

//#define IN0 GPIO_Pin_4

#define ST    GPIO_Pin_5

#define OE    GPIO_Pin_6

//#define A     GPIO_Pin_7

#define D0     GPIO_Pin_0

#define D1     GPIO_Pin_1

#define D2     GPIO_Pin_2

#define D3     GPIO_Pin_3

#define D4    GPIO_Pin_4

#define D5     GPIO_Pin_5

#define D6     GPIO_Pin_6

#define D7     GPIO_Pin_7

#define EOC GPIO_Pin_8

double val=0;

void delay(u32 kk)

{

  while(kk--);

}

/*

const unsigned short CLK= GPIO_Pin_0;

const unsigned short B=GPIO_Pin_1;

const unsigned short C=GPIO_Pin_2;

const unsigned short ALE=GPIO_Pin_3;

const unsigned short IN0=GPIO_Pin_4;

const unsigned short ST=GPIO_Pin_5;

const unsigned short OE=GPIO_Pin_6;

const unsigned short A=GPIO_Pin_7;

const unsigned short D0=GPIO_Pin_0;

const unsigned short D1=GPIO_Pin_1;

const unsigned short D2=GPIO_Pin_2;

const unsigned short D3=GPIO_Pin_3;

const unsigned short D4=GPIO_Pin_4;

const unsigned short D5=GPIO_Pin_5;

const unsigned short D6=GPIO_Pin_6;

const unsigned short D7=GPIO_Pin_7;

const unsigned short EOC=GPIO_Pin_8;

*/

void ad_init()

{

    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8;

    GPIO_InitStructure.GPIO_Mode =  GPIO_Mode_Out_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

     GPIO_Init(GPIOA, &GPIO_InitStructure);

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init(GPIOB, &GPIO_InitStructure);

    GPIO_ResetBits(GPIOA, ALE);

//    GPIO_ResetBits(GPIOA, A);

//    GPIO_ResetBits(GPIOA, B);

//    GPIO_ResetBits(GPIOA, C);

     //delay(10);

    GPIO_SetBits(GPIOA, ALE);

    //CLK

}

void adc0809_input()

{

    //ST²úÉúÉÏÉýÑØºÍÏÂ½µÑØ

    GPIO_ResetBits(GPIOA, ST);

    delay(10);

    GPIO_SetBits(GPIOA,ST);

    delay(10);

    GPIO_ResetBits(GPIOA, ST);

    delay(10);

    while(GPIO_ReadInputDataBit(GPIOB, EOC)==0);

    GPIO_SetBits(GPIOA,OE);

    val=GPIO_ReadInputDataBit(GPIOB, D0)*0x0001+

         GPIO_ReadInputDataBit(GPIOB, D1)*0x0002+

       GPIO_ReadInputDataBit(GPIOB, D2)*0x0004+

       GPIO_ReadInputDataBit(GPIOB, D3)*0x0008+

       GPIO_ReadInputDataBit(GPIOB, D4)*0x0010+

       GPIO_ReadInputDataBit(GPIOB, D5)*0x0020+

       GPIO_ReadInputDataBit(GPIOB, D6)*0x0040+

       GPIO_ReadInputDataBit(GPIOB, D7)*0x0080;

    GPIO_ResetBits(GPIOA,OE);

    //val=val*2*0.98;

}

void timer_init()         //¶¨Ê±Æ÷ÖÐ¶ÏÅäÖÃ

{

    NVIC_InitTypeDef NVIC_InitStructure;      //ÅäÖÃÖÐ¶Ï½á¹¹

    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);                     //ÅäÖÃÄÚ²¿Ê±ÖÓ

    NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn;

    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;

    NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;

    NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;

    NVIC_Init(&NVIC_InitStructure);//¶¨Ê±Æ÷3µÄÖÐ¶Ï³õÊ¼»¯

      TIM_TimeBaseStructure.TIM_Period=100;      //ÓëÏÂÒ»ÐÐÓï¾äÅäºÏ£¬µ¥Æ¬»úÊ±ÖÓÐÅºÅÄ¬ÈÏÇé¿öÏÂÊÇ72MHz£¬¸Ä10000Õâ¸öÊý¿ÉÒÔÉèÖÃÖÐ¶ÏÊ±¼ä

    TIM_TimeBaseStructure.TIM_Prescaler=72;    //ÕâÐÐÒ²¿ÉÒÔ¸Ä£¬µ«ÊÇÎªÁËÊý¾Ý·ÖÅäÇå³þ£¬»¹ÊÇÉÏÒ»ÐÐÕû°ÙÕû°ÙµØ¸Ä±È½ÏºÃ

    TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;

    TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;

    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

    TIM_ITConfig(TIM3,TIM_IT_Update|TIM_IT_Trigger,ENABLE);

    TIM_Cmd(TIM3, ENABLE);

}

int i=1;

void TIM3_IRQHandler()

{

  if(TIM_GetITStatus(TIM3,TIM_IT_Update)!=RESET) //È·¶¨½øÈëÁËÕâ¸öÖÐ¶Ï

  {

    TIM_ClearITPendingBit(TIM3, TIM_IT_Update);            //    Çå³ý±êÖ¾£¬±£ÏÕÆð¼ûÒª¼Ó

    adc0809_input();

        if(i==1)

        {

            GPIO_SetBits(GPIOA, GPIO_Pin_8);

        i=0;

        }

        else

        {

            i=1;

        GPIO_ResetBits(GPIOA, GPIO_Pin_8);

        }

  }

}

void ADC0809_Clock()

{

   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

   TIM_OCInitTypeDef TIM_OCInitStructure;

     GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;

    GPIO_InitStructure.GPIO_Mode =  GPIO_Mode_AF_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

     GPIO_Init(GPIOA, &GPIO_InitStructure);

      //PWM--->100Hz

  TIM_TimeBaseStructure.TIM_Period=10;

  TIM_TimeBaseStructure.TIM_Prescaler=12;

  TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;

  TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;

  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

//  //PA6--->50%                                             //?????

  TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;

  TIM_OCInitStructure.TIM_Pulse=5;                    //pulse????period??????

    TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

  TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;

  TIM_OC1Init(TIM2, &TIM_OCInitStructure);

    //  //PA7--->40%

//  TIM_OCInitStructure.TIM_Pulse=40;

//  TIM_OC2Init(TIM3, &TIM_OCInitStructure);

//  //PB0--->60%

//  TIM_OCInitStructure.TIM_Pulse=60;

//  TIM_OC3Init(TIM3, &TIM_OCInitStructure);

//  //PB1--->80%

//  TIM_OCInitStructure.TIM_Pulse=80;

//  TIM_OC4Init(TIM3, &TIM_OCInitStructure);

     TIM_Cmd(TIM2, ENABLE);

}

int main()

{      

      ad_init();

      GPIO_SetBits(GPIOA, GPIO_Pin_3);

    ADC0809_Clock();

      timer_init();   

    while(1)

        {

        }

}

码农公寓

一、特性参数

二、内部结构图

三、芯片管脚图

四、管脚功能说明

五、STM32F103ZE驱动程序

相关文章