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#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "lcd.h"
#include "usart.h"
#include "adc.h"
#include "stm32_dsp.h"
#include <math.h>
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define DOUBLE_COLOR 1 //是否為雙色屏，若為雙色屏則改為1
#define NPT 64 //FFT采樣點(diǎn)數(shù)
#define GREEN_STOP_TIME 15 //綠色點(diǎn)頂端停頓時(shí)間，值越大時(shí)間越長(zhǎng)
#define GREEN_SUB_SPEED 100 //綠色點(diǎn)下移速度，值越大速度越慢
#define RED_SUB_SPEED 50 //紅色頻柱向下縮短速度，值越大速度越慢
uint32_t ADC_DataNum=0; //ADC采樣點(diǎn)數(shù)
uint32_t RedTime=0; //紅色點(diǎn)下移時(shí)間變量
#if DOUBLE_COLOR
uint32_t GreenTime=0; //綠色點(diǎn)下移時(shí)間變量
uint32_t GreenStopTime[32]={0}; //綠色點(diǎn)頂端停頓時(shí)間數(shù)據(jù)
#endif
volatile uint8_t ADC_TimeOutFlag=1; //ADC定時(shí)采樣時(shí)間到標(biāo)志
extern __IO uint16_t ADCConvertedValue; //ADC采樣值
extern int LCD_COLOR;
long lBUFMAG[NPT+NPT/2]; //存儲(chǔ)求模后的數(shù)據(jù)
long lBUFOUT[NPT];//FFT輸出序列
long lBUFIN[NPT];//FFT輸入系列
uint8_t fftHightRedBuf[NPT/2]={0}; //紅色頻柱高度數(shù)組
uint8_t DisplayRedDataBuf[32*8]={0}; //紅色顯示緩沖區(qū)
#if DOUBLE_COLOR
uint8_t fftHightGreenBuf[NPT/2]={0}; //綠色頻點(diǎn)高度數(shù)組
uint8_t DisplayGreenDataBuf[32*8]={0}; //綠色顯示緩沖區(qū)
#endif
u16 color_tab[16]={DARKBLUE,BLUE,LIGHTBLUE,GREEN,LIGHTGREEN,RED,BRED,BRRED,BLACK,YELLOW,CYAN,MAGENTA,GRAYBLUE,LGRAYBLUE,BROWN,LGRAY};
void music_fft_main(uint8_t *RedNewHeight,uint8_t *GreenNewHeight)
{
int BarWidth = 8;
int i=0;
int j=0;
static uint8_t RedOldHeight[32] = {0};
static uint8_t GreenOldHeight[32] = {0};
for(i=0;i<32;i++)
{
//清除之前的綠色方塊
//LCD_COLOR = LCD_COLOR_BLACK;
LCD_Fill(GreenOldHeight[i],(BarWidth+2)*i,GreenOldHeight[i]+3,(BarWidth+2)*i+BarWidth,WHITE);
//顯示當(dāng)前的綠色方塊
LCD_Fill(GreenNewHeight[i],(BarWidth+2)*i,GreenNewHeight[i]+3,(BarWidth+2)*i+BarWidth,color_tab[16-j]);
//顯示紅色柱
if(RedNewHeight[i]>RedOldHeight[i]){//如果當(dāng)前的綠色柱子高度比之前的大則補(bǔ)齊綠色柱子
LCD_Fill(RedOldHeight[i],(BarWidth+2)*i,RedNewHeight[i],(BarWidth+2)*i+BarWidth,color_tab[j]);
}else{//如果當(dāng)前顯示的綠色柱子高度小于之前的柱子則需要將多余的綠色柱子用背景色填充
LCD_Fill(RedNewHeight[i],(BarWidth+2)*i,RedOldHeight[i],(BarWidth+2)*i+BarWidth,WHITE);
}
//將新數(shù)據(jù)保存
RedOldHeight[i] = RedNewHeight[i];
GreenOldHeight[i] = GreenNewHeight[i];
if(j>=15)
j=0;
j++;
}
}
void powerMag(long nfill)
{ int32_t lX,lY;
uint32_t i;
for (i=0; i < nfill; i++)
{
lX= (lBUFOUT[i]<<16)>>16; /* sine_cosine --> cos */
lY= (lBUFOUT[i] >> 16); /* sine_cosine --> sin */
{
float X= 64*((float)lX)/32768;
float Y = 64*((float)lY)/32768;
float Mag = sqrt(X*X+ Y*Y)/nfill; // 先平方和,再開方
lBUFMAG[i] = (long)(Mag*65536);
}
}
}
int main(void)
{uint32_t i=0;
delay_init(); //延時(shí)函數(shù)初始化
NVIC_Configuration(); //設(shè)置NVIC中斷分組2:2位搶占優(yōu)先級(jí)，2位響應(yīng)優(yōu)先級(jí)
uart_init(9600); //串口初始化為9600
LED_Init(); //LED端口初始化
TIM2_Configuration();
TIM2_NVIC_Configuration();
FFT_RCC_Configuration();
FFT_GPIO_Configuration();
FFT_DMA_Init();
FFT_ADC_Init();
LCD_Init();
// BACK_COLOR=BLACK;
TIM_Cmd(TIM2, ENABLE);
ADC_SoftwareStartConvCmd(ADC1, DISABLE);
while(1)
{
if(ADC_TimeOutFlag){
#if DOUBLE_COLOR
GreenTime++;
#endif
RedTime++;
ADC_TimeOutFlag=0;
if(ADC_DataNum<NPT){//采樣點(diǎn)沒有達(dá)到所要求的點(diǎn)
// ADC1->CR2 |= 0x00500000;//
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!DMA_GetFlagStatus(DMA1_FLAG_TC1));
/* Clear channel1 transfer complete flag */
DMA_ClearFlag(DMA1_FLAG_TC1);
// ADC1->CR2 &= 0xFFAFFFFF;//
ADC_SoftwareStartConvCmd(ADC1, DISABLE);
lBUFIN[ADC_DataNum]=ADCConvertedValue<<16;
ADC_DataNum++;
}else{
TIM_Cmd(TIM2, DISABLE);
ADC_DataNum=0;
cr4_fft_64_stm32(lBUFOUT,lBUFIN,NPT);//調(diào)用STM32的DSP庫作FFT變換
powerMag(NPT);//計(jì)算頻點(diǎn)幅值
//更新紅色點(diǎn)的高度
for(i=0;i<NPT/2;i++){
if((uint8_t)(lBUFMAG[i])>fftHightRedBuf[i]){
fftHightRedBuf[i]=(lBUFMAG[i]);
}
#if DOUBLE_COLOR
//刷新綠色點(diǎn)高度
if(fftHightRedBuf[i]>=fftHightGreenBuf[i]){
fftHightGreenBuf[i]=fftHightRedBuf[i];
GreenStopTime[i]=GREEN_STOP_TIME;//綠點(diǎn)停頓時(shí)間
if(fftHightRedBuf[i]>=235){
fftHightGreenBuf[i]=235;
fftHightRedBuf[i]=235;
}
}
#else
if(fftHightRedBuf[i]>=239){
fftHightRedBuf[i]=239;
}
#endif
}
//顯示紅色柱子
music_fft_main(fftHightRedBuf,fftHightGreenBuf);
//顯示綠色點(diǎn)
#if DOUBLE_COLOR
//綠色點(diǎn)下移
if((GreenTime>GREEN_SUB_SPEED)){ //綠色點(diǎn)下降間隔時(shí)間
GreenTime=0;
for(i=0;i<NPT/2;i++){
if((fftHightGreenBuf[i]!=0)&&(GreenStopTime[i]==0)){
fftHightGreenBuf[i]--;
}
}
}
#endif
//紅色下移
if(RedTime>RED_SUB_SPEED){
RedTime=0;
for(i=0;i<NPT/2;i++){
if((fftHightRedBuf[i]!=0)){
fftHightRedBuf[i]--;
}
}
}
//綠色點(diǎn)停頓時(shí)間減一
#if DOUBLE_COLOR
for(i=0;i<NPT/2;i++){
if(GreenStopTime[i]!=0){
GreenStopTime[i]--;
}
}
#endif
TIM_Cmd(TIM2, ENABLE);
}
}
}
}
void TIM2_IRQHandler(void)
{
if(TIM_GetITStatus(TIM2,TIM_IT_Update)==SET){
// TIM2->SR = (uint16_t)~TIM_FLAG_Update;
TIM_ClearITPendingBit(TIM2,TIM_FLAG_Update); //清中斷
ADC_TimeOutFlag=1;
}
}

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