ov5640摄像头显示例程
时间: 2023-06-13 13:08:29 浏览: 95
以下是ov5640摄像头显示的简单例程:
```c
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/i2c-dev.h>
#include <linux/types.h>
#include <linux/spi/spidev.h>
#define OV5640_ADDR 0x78
int fd_i2c;
int ov5640_write_reg(unsigned short reg, unsigned char value)
{
unsigned char buf[2];
buf[0] = reg >> 8;
buf[1] = reg & 0xff;
if (write(fd_i2c, buf, 2) != 2) {
return -1;
}
buf[0] = value;
if (write(fd_i2c, buf, 1) != 1) {
return -1;
}
return 0;
}
int ov5640_init()
{
ov5640_write_reg(0x3008, 0x80);
usleep(10000);
ov5640_write_reg(0x3103, 0x93);
usleep(10000);
ov5640_write_reg(0x3008, 0x00);
usleep(10000);
ov5640_write_reg(0x3008, 0x20);
usleep(10000);
ov5640_write_reg(0x3008, 0xa0);
usleep(10000);
ov5640_write_reg(0x3103, 0x03);
usleep(10000);
ov5640_write_reg(0x3008, 0x00);
usleep(10000);
ov5640_write_reg(0x3103, 0x93);
usleep(10000);
return 0;
}
int ov5640_start()
{
ov5640_write_reg(0x3103, 0x03);
usleep(10000);
ov5640_write_reg(0x3008, 0x02);
usleep(10000);
ov5640_write_reg(0x3008, 0xa2);
usleep(10000);
return 0;
}
int main()
{
fd_i2c = open("/dev/i2c-0", O_RDWR);
if (fd_i2c < 0) {
printf("Cannot open i2c device\n");
return -1;
}
if (ioctl(fd_i2c, I2C_SLAVE, OV5640_ADDR) < 0) {
printf("Cannot set i2c slave address\n");
return -1;
}
if (ov5640_init() < 0) {
printf("Cannot init ov5640 camera\n");
return -1;
}
if (ov5640_start() < 0) {
printf("Cannot start ov5640 camera\n");
return -1;
}
printf("ov5640 camera started\n");
// Add your code to display the image captured by the ov5640 camera here
return 0;
}
```
这个例程通过 i2c 总线与 ov5640 摄像头通信,初始化 ov5640 摄像头并启动它。在 ov5640 摄像头启动后,你需要自己编写代码来显示 ov5640 摄像头捕获的图像。
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