ov7670，带fifo，一直显示白屏，ov7670初始化成功，串口有数据，什么原因

说是不是放屁了 · 发表于 2020-3-9 12:35:39

代码如下，#include "stc15w4k56s4.h"#include "TFT18.h"
#include "delay.h"
#include "uart.h"
#include "ov7670.h"

#define uint unsigned int
#define uchar unsigned char

//uchar code pic[];
//unsigned char cur_status=0;
//uchar xdata Camera_Data[256]={0};
uchar Vsync_Flag=0;

//sbit TFT_BL=P0^7;//½óÄ￡¿éBLòy½Å￡¬±31a2éóÃIO¿ØÖÆ»òÕ&#223

WM¿ØÖÆ￡¬ò2¿éòÔÖ±½ó½óμ½¸ßμçÆ½3￡áá
sbit TFT_SCL=P0^6;//½óÄ￡¿éCLKòy½Å
sbit TFT_SDA=P0^5;//½óÄ￡¿éDIN/MOSIòy½Å
sbit TFT_RS=P0^4;//½óÄ￡¿éD/Còy½Å￡¬1￡odata￡¬0￡ocmmand
sbit TFT_RST=P0^3;//½óÄ￡¿éRSTòy½Å
sbit TFT_CS=P0^2;//½óÄ￡¿éCEòy½Å￡¬0￡oóDD§

//FIFO control lines
sbit FIFO_RCK=P2^2;//FIFO¶áêy¾Yê±Öó
sbit FIFO_WR=P2^3;//FIFOD′ê1Äü
sbit FIFO_OE=P2^4;//FIFO1Ø¶Ï¿ØÖÆ
sbit FIFO_WRST=P2^5;//D′Ö¸Õë¸′Î»
sbit FIFO_RRST=P2^6;//¶áÖ¸Õë¸′Î»

sbit Key1=P2^0;
sbit Key2=P2^1;
//sbit Key3=P2^2;
//sbit Key4=P2^3;
sbit red=P5^0;
sbit yellow=P5^1;
sbit blue=P5^2;

void Port_Init(void);
void Ext_Interrupt_Init(void);

void Port_Init(void) //éè¶¨Ö÷»úéÏËùóD¶Ë¿úÎa×¼Ë«Ïò¿ú￡¬2Î¿¼￡¨P1016￡©
{
P0M0 = 0x01;
P0M1 = 0x00;//p0.0ÎaíÆíñêä3ö
//P1M0 = 0x80;
//P1M1 = 0x00;//p1.7ÎaíÆíñêä3ö

翼行园子 · 发表于 2020-3-9 15:08:33

读写FIFO 出问题了吧有7670的代码可以参考的论坛上可以下载去看看http://www.openedv.com/forum.php ... 0%2B%2B%D7%CA%C1%CF

说是不是放屁了 · 发表于 2020-3-9 15:53:05

翼行园子发表于 2020-3-9 15:08
读写FIFO 出问题了吧有7670的代码可以参考的论坛上可以下载去看看http://www.openedv.com/forum.php?mod ...

我没发现读fifo有什么问题呀，帮忙看一下呀

#include "stc15w4k56s4.h"
#include "TFT18.h"
#include "delay.h"
#include "uart.h"
#include "ov7670.h"

#define uint unsigned int
#define uchar unsigned char

uchar code pic[];
//unsigned char cur_status=0;
//uchar xdata Camera_Data[256]={0};
uchar Vsync_Flag=0;

//sbit TFT_BL=P0^7;//½óÄ￡¿éBLòy½Å￡¬±31a2éóÃIO¿ØÖÆ»òÕ&#223

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sbit TFT_SCL=P0^6;//½óÄ￡¿éCLKòy½Å
sbit TFT_SDA=P0^5;//½óÄ￡¿éDIN/MOSIòy½Å
sbit TFT_RS=P0^4;//½óÄ￡¿éD/Còy½Å￡¬1￡odata￡¬0￡ocmmand
sbit TFT_RST=P0^3;//½óÄ￡¿éRSTòy½Å
sbit TFT_CS=P0^2;//½óÄ￡¿éCEòy½Å￡¬0￡oóDD§

//FIFO control lines
sbit FIFO_RCK=P2^2;//FIFO¶áêy¾Yê±Öó
sbit FIFO_WR=P2^3;//FIFOD′ê1Äü
sbit FIFO_OE=P2^4;//FIFO1Ø¶Ï¿ØÖÆ
sbit FIFO_WRST=P2^5;//D′Ö¸Õë¸′Î»
sbit FIFO_RRST=P2^6;//¶áÖ¸Õë¸′Î»

sbit Key1=P2^0;
sbit Key2=P2^1;
//sbit Key3=P2^2;
//sbit Key4=P2^3;
sbit red=P5^0;
sbit yellow=P5^1;
sbit blue=P5^2;

void Port_Init(void);
void Ext_Interrupt_Init(void);

void Port_Init(void) //éè¶¨Ö÷»úéÏËùóD¶Ë¿úÎa×¼Ë«Ïò¿ú￡¬2Î¿¼￡¨P1016￡©
{
  P0M0 = 0x01;
  P0M1 = 0x00;//p0.0ÎaíÆíñêä3ö
//P1M0 = 0x80;
//P1M1 = 0x00;//p1.7ÎaíÆíñêä3ö
P1M0 = 0x00;
P1M1 = 0xFF;//p1¶Ë¿úÎa¸ß×èêäèë
  P2M0 = 0x78;
  P2M1 = 0x00;//p2.3￡¬p2.4￡¬p2.5￡¬p2.6ÎaíÆíñêä3ö
  P3M0 = 0x00;
  P3M1 = 0x04;//P3.2Îa¸ß×èêäè￡¬ë
  P4M0 = 0x00;
  P4M1 = 0x00;
  P5M0 = 0x00;
  P5M1 = 0x00;
}
void Ext_Interrupt_Init(void)
{
IT0=1;//0:éÏéyÑØoíÏÂ½μÑØ′￥·￠,1:ÏÂ½μÑØ′￥·￠
EX0=1;//¿aÆôía2¿ÖD¶Ï0
EA=1;//¿aÆô×üÖD¶Ï￡¬ía2¿ÖD¶ÏÔ′p3.2

}
void main(void)
{
// unsigned char i;
unsigned long j;
// unsigned int x,y;
// unsigned int k;
unsigned char PicH,PicL;
// unsigned char interrupt_count;

Port_Init();
Ext_Interrupt_Init();
TFT_Init();
delay_ms(10);
TFT_Write_Command(0x2C);
DSP_Single_Colour(LGRAY_H,LGRAY_L);
Display_Start();
Uart1_Init();
delay_ms(100);
  FIFO_OE=0;    //ê1ÄüéãÏñí·Ä￡¿é
TFT_Write_Command(0x2C);
DSP_Single_Colour(LGRAY_H,LGRAY_L);
Display_ASCII8X16(1,8,"OV is starting",BLUE_H,BLUE_L);
  while(Ov7670_Init())    //3õê¼»ˉ ov7670
{
Display_ASCII8X16(1,96,"Init error",RED_H,RED_L);
}
Display_ASCII8X16(1,96,"Init success",BLUE_H,BLUE_L);
delay_ms(100);
OV7670_Window_Set(10,176,160,128); //éèÖÃ′°¿ú,heignt*weight

TFT_Write_Command(0x2C);
DSP_Single_Colour(LGRAY_H,LGRAY_L);
// interrupt_count=0;
while(1)
{
/* k=0;
for(x=0;x<160;x++)
for(y=0;y<128;y++)
{
PicH=pic[k];
k++;
PicL=pic[k];
k++;
TFT_DataWrite(PicH,PicL);
}
*/

if(Vsync_Flag==2)    //ÅD¶Ï»o′æÇøêÇ·ñ′æoÃéãÏñêy¾Y
{
FIFO_RRST=0;    //¿aê¼¸′Î»¶áÖ¸Õë
   FIFO_RCK=0;
   FIFO_RCK=1;
   FIFO_RCK=0;
   FIFO_RRST=1;    //¸′Î»¶áÖ¸Õë½áêø
FIFO_RCK=1;

   for(j=0;j<20480;j++) //·Ö±æÂêÎa128x160 Ã¿¸öÑÕé«μãòaá½¸ö×Ö½ú￡¬Ã¿′Î¶á2¸ö×Ö½ú￡¬12128*160  ′Î
{
FIFO_RCK=0;    //Ã¿ò»′Îê±Öóìø±ä ¶áò»′Îêy¾Y
PicH=P1;    //¶áêy¾Y    ¶áè¡ÑÕé«¸ß×Ö½úêy¾Y
FIFO_RCK=1;
Uart1_Send_Data(PicH);
FIFO_RCK=0;
PicL=P1;    //¶áêy¾Y    ¶áè¡ÑÕé«μí×Ö½úêy¾Y
FIFO_RCK=1;
Uart1_Send_Data(PicL);
TFT_Write_Command(0x2C);
TFT_DataWrite(PicH,PicL); //½2¶áè¡μÄÑÕé«ÖμÏÔê¾μ½TFTéÏ
delay_us(160);
}
Vsync_Flag=0;    //ÏÔê¾íêÕû¸öí¼Æ¬òÔoó ½«    cur_statusÖÃ0  ×¼±¸½óêÕÏÂò»Ö¡
blue=!blue;
}
}
}

void INT0_EX (void) interrupt 0 //ía2¿ÖD¶Ïp3.2
{
EA=0;
if(Vsync_Flag==0) //èç1û′Ëê±×′ì¬Îa0￡¬ÔòËμÃ÷êÇò»¸öí¼ÏñμÄ¿aê¼￡¬¿aê¼ÏòFIFO1Tèëêy¾Y
{
FIFO_WRST=0;
delay_us(5);
FIFO_WRST=1;
FIFO_WR=1;
Vsync_Flag=1; //±ê¼ÇÎa1
yellow=1;
}
else
if(Vsync_Flag==1) //ËμÃ÷′Ë′|Îaí¼ÏñμÄ½áêø￡¬òà¼′ÏÂò»í¼ÏñμÄ¿aê¼
   {
   FIFO_WR=0;
   FIFO_WRST=0;
   FIFO_WRST=1;
   Vsync_Flag=2;
   yellow=0;
   }
   EA=1;
}