對于stm32與ov7670上位機交互程序

ID:1052992 · 發表于 2022-11-22 10:27

使用正點原子的stm32 Mini板實現 ov7670與電腦上位機進行通訊。
從而實現電腦上位機上看到ov7670的傳輸圖片，然后進行其他的算法處理。

單片機源程序如下:

#include "sys.h"
#include "usart.h"
#include "delay.h"
#include "led.h"
#include "lcd.h"
#include "usmart.h"
#include "ov7670.h"
#include "exti.h"
#include "timer.h"
int freq_mul = 15;
extern u8 ov_sta;
extern u32 ov_frame;
u8 CanSend = 0;
void pixels()
{
u16 count = 0;
u16 color;
__asm
{
mov r6, #320
mov r7, #240
mul r7, r6
mov r3, 0
mov r5, 1
mov r1, #0x0c00
movt r1, #0x4001
mov r2, #0x0184
movt r2, #0x4221
mov r8, #0x1010
movt r8, #0x4001
mov r9, #0x88888888
mov r10, #0x33333333
mov r11, #0x100
mov r12, #0x200
mov r0, #0x280
mov r6, 0
again:
str r9, [r1] //GPIOB->CRL=0X88888888;
str r3, [r2] // OV7670->RCK = 0;
ldrb r4, [r1, 0x8] // r4 = GPIOB->IDR;
str r5, [r2] // OV7670->RCK = 1;
str r3, [r2] // OV7670->RCK = 0;
ldrb r6, [r1, 0x8] // r6 = GPIOB->IDR;
str r5, [r2] // OV7670->RCK = 1;
str r10, [r1] //GPIOB->CRL=0X33333333;
add r6, r4, LSL #8 // r6+=(r4<<8)
mov color,r6
}
USART1->DR = color>>8;
while((USART1->SR&0X40)==0);
USART1->DR = (color&0x00ff);
while((USART1->SR&0X40)==0); //發送數據
// if(count < 320) count++;
// else
// {
// count = 0;
// printf("\r\n");
// }
__asm
{
mov r6,color
str r11, [r8] // LCD_RS_SET
str r12, [r8, 4] // LCD_CS_CLR
str r6, [r1, 0xc] // GPIOB->ODR = data
mov r4, #0x080
str r4, [r8, 4] // LCD_WR_CLR
str r0, [r8] // LCD_WR_SET, LCD_CS_SET
sub r7, r7, 1 // count down
cmp r7, r3
bne again;
}
}
void camera_refresh(void)
{
if(ov_sta >= 0)
{
LCD_Scan_Dir(U2D_L2R); //從上到下,從左到右
LCD_SetCursor(0x00,0x0000); //設置光標位置
LCD_WriteRAM_Prepare(); //開始寫入GRAM
OV7670_CS=0;
OV7670_RRST=0; //開始復位讀指針
OV7670_RCK=0;
OV7670_RCK=1;
OV7670_RCK=0;
OV7670_RRST=1; //復位讀指針結束
OV7670_RCK=1;
pixels();
OV7670_CS=1;
OV7670_RCK=0;
OV7670_RCK=1;
EXTI->PR=1<<15; //清除LINE8上的中斷標志位
ov_sta=0; //開始下一次采集
ov_frame++;
LCD_Scan_Dir(DFT_SCAN_DIR); //恢復默認掃描方向
}
}
int main(void)
{
u8 i;
Stm32_Clock_Init(freq_mul); //系統時鐘設置
uart_init(72,345600 * 9 / freq_mul);//串口初始化為9600
delay_init(72); //延時初始化
LED_Init(); //初始化與LED連接的硬件接口
LCD_Init(); //初始化LCD
POINT_COLOR=RED; //設置字體為紅色
LCD_ShowString(0,0,200,200,16,"OV7670 Init...");
while(OV7670_Init()) //初始化OV7670
{
LCD_ShowString(0,0,200,200,16,"OV7670 Error!!");
delay_ms(200);
LCD_Fill(60,150,239,166,WHITE);
delay_ms(200);
}
LCD_ShowString(0,0,200,200,16,"OV7670 Init OK");
delay_ms(1500);
TIM3_Int_Init(10000,7199); //TIM3,10Khz計數頻率,1秒鐘中斷
EXTI15_Init(); //使能定時器捕獲
OV7670_Window_Set(10,174,240,320); //設置窗口
OV7670_CS=0;
while(1)
{
while(!CanSend)
{
delay_ms(100);
LCD_ShowString(0,0,200,200,16,"Pleas send 0x00 to me");
}
// printf("new pic\r\n");
camera_refresh(); //更新顯示
// printf("end pic\r\n");
CanSend = 0;
if(i!=ov_frame) //DS0閃爍.
{
i=ov_frame;
LED0=!LED0;
}
}
}

復制代碼

下載(此代碼年代久遠,采用的老版本的庫和老版本Keil編寫的)：

(2017.09.16)串口圖像上位機.7z (178.9 KB, 下載次數: 17)

帳號		自動登錄	找回密碼
密碼			立即注冊

久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

對于stm32與ov7670上位機交互程序