Electric Game Summary (ii)--AD chip summary of the audio processing chip ADC8009

First, the characteristic parameter

1, dedicated to audio processing of the ad chip

2, internal fixed 8K sample rate

3, 8-bit AD chip

Second, the internal structure diagram

Three, Chip pin diagram

Four, the PIN function description

Pin Name	Function
In0~in7	Data-Entry
Abc	Data input port Selection
St	ST is the conversion start signal. When the St jumps along, all internal registers clear 0, the lower jump edge, the start of A/D conversion, during the conversion, ST should remain low level.
EOC	The EOC signals the end of the conversion. When the EOC is high, it indicates that the conversion is over; otherwise, a A/D conversion is in progress
Oe	The OE outputs allow signals to control the data obtained from the three output latches to the microcontroller output. oe=1, output conversion data, oe=0, output data line is high-impedance state. The d7-d0 is a digital output line.
D7-d0	Digital output Line
Dl	Clock input signal line. Because there is no clock circuit inside the ADC0809, the required clock signal must be supplied by the outside world, usually using a frequency of 500KHZ
VREF (+)	Reference voltage Input Positive
VREF (-)	Reference voltage Input Negative

V. Stm32f103ze Driver

#include"stm32f10x.h"#defineCLK gpio_pin_0//#define B gpio_pin_1//#define C gpio_pin_2#defineALE Gpio_pin_4//#define IN0 Gpio_pin_4#defineST Gpio_pin_5#defineOE Gpio_pin_6//#define A gpio_pin_7#defineD0 gpio_pin_0#defineD1 gpio_pin_1#defineD2 gpio_pin_2#defineD3 Gpio_pin_3#defineD4 Gpio_pin_4#defineD5 Gpio_pin_5#defineD6 Gpio_pin_6#defineD7 gpio_pin_7#defineEOC Gpio_pin_8DoubleVal=0;voiddelay (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 unsign Ed Short ale=gpio_pin_3;const unsigned short in0=gpio_pin_4;const unsigned short st=gpio_pin_5;const unsigned short oe=gp Io_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 D 5=gpio_pin_5;const unsigned short d6=gpio_pin_6;const unsigned short d7=gpio_pin_7;const unsigned short eoc=gpio_pin_8; */voidAd_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 (ten);gpio_setbits (Gpioa, ALE); //CLK}voidAdc0809_input () {//st2úéúé?éy?? Oí??? μ??gpio_resetbits (Gpioa, ST); Delay (Ten);    Gpio_setbits (GPIOA,ST); Delay (Ten);    Gpio_resetbits (Gpioa, ST); Delay (Ten);  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;}voidTimer_init ()//? ¨ê±?÷? D??????{nvic_inittypedef nvic_initstructure; //????? D??? Á11Tim_timebaseinittypedef tim_timebasestructure;    Rcc_apb2periphclockcmd (Rcc_apb2periph_gpioa, ENABLE);                 Rcc_apb1periphclockcmd (RCC_APB1PERIPH_TIM3, ENABLE);                     Nvic_prioritygroupconfig (NVIC_PRIORITYGROUP_0); //????? Ú2?ê±?óNvic_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±?÷3μ?? D?? 3?ê?? ˉtTim_timebasestructure.tim_period= -;//Ó??? Ò? Ddó????? O?￡?μ￥??? Úê±?ód?o??? È?? E???? Ê?72mhz￡??? 10000?a?? Êy?éò?éè??? D?? ʱ??Tim_timebasestructure.tim_prescaler= the;//? Addò2?éò??? ￡?μ?ê?? Aá?êy? Y????? 3t￡?? 1ê?é?ò? Dd?? °ù?? °ùμ??? ±è?? O?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); }intI=1;voidTim3_irqhandler () {if(Tim_getitstatus (tim3,tim_it_update)!=reset)//è? ¨?? È?á?? A??? D??{tim_clearitpendingbit (TIM3, tim_it_update); //    ?? 3y±ê?? ￡?±￡??? E?? Òa?óAdc0809_input (); if(i==1) {gpio_setbits (Gpioa, gpio_pin_8); I=0; }                Else{i=1;        Gpio_resetbits (Gpioa, gpio_pin_8); }  }}voidAdc0809_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--->100hzTim_timebasestructure.tim_period=Ten; Tim_timebasestructure.tim_prescaler= A; 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);}intMain () {ad_init ();     Gpio_setbits (Gpioa, gpio_pin_3);       Adc0809_clock ();                   Timer_init ();  while(1)        {                }}

Electric Game Summary (ii)--AD chip summary of the audio processing chip ADC8009