ZYNQ的IIC可以连接到OV5640摄像头吗

是的，ZYNQ的IIC可以连接到OV5640摄像头。OV5640是一款支持I2C接口的CMOS图像传感器，可以通过I2C总线与ZYNQ进行通信。一般来说，连接OV5640摄像头需要先通过I2C进行配置，然后使用MIPI或其他接口进行图像数据传输。不过具体的连接方式和操作流程需要根据具体的硬件平台和应用场景进行调整。

相关问题

zynq控制OV5640摄像头，采集图像，并将图像RGB数据读到zynq中，写出C代码

以下是一个简单的C代码示例，用于控制OV5640摄像头并采集图像数据：

#include <stdio.h>
#include "xparameters.h"
#include "xiicps.h"
#include "ov5640.h"

#define IIC_DEVICE_ID	XPAR_XIICPS_0_DEVICE_ID
#define OV5640_DEVICE_ADDRESS 0x3C

XIicPs Iic;

int main()
{
    int Status;
    u8 value;
    u8 buffer[2];
    u32 i;

    // 初始化I2C控制器
    XIicPs_Config *IicConfig;
    IicConfig = XIicPs_LookupConfig(IIC_DEVICE_ID);
    if (NULL == IicConfig) {
        return XST_FAILURE;
    }

    Status = XIicPs_CfgInitialize(&Iic, IicConfig, IicConfig->BaseAddress);
    if (Status != XST_SUCCESS) {
        return XST_FAILURE;
    }

    // 设置I2C时钟频率
    Status = XIicPs_SetSClk(&Iic, 400000);
    if (Status != XST_SUCCESS) {
        return XST_FAILURE;
    }

    // 初始化OV5640摄像头
    OV5640_Init(&Iic, OV5640_DEVICE_ADDRESS);

    // 设置图像分辨率
    OV5640_Set_JPEG_Size(OV5640_DEVICE_ADDRESS, OV5640_640x480);

    // 开始图像采集
    OV5640_Start_Capture(OV5640_DEVICE_ADDRESS);

    // 等待图像采集完成
    while (!OV5640_CAPTURE_DONE);

    // 读取RGB数据
    for (i = 0; i < OV5640_IMAGE_SIZE; i += 2) {
        buffer[0] = OV5640_READ_DATA(OV5640_DEVICE_ADDRESS);
        buffer[1] = OV5640_READ_DATA(OV5640_DEVICE_ADDRESS);
        value = (buffer[0] << 8) | buffer[1];
        printf("%d\n", value);
    }

    return 0;
}

请注意，此示例代码仅用于参考。实际使用时，您需要根据您的具体应用程序进行修改和优化。

zynq7000ov5640图像采集代码

以下是一个简单的Zynq-7000 OV5640图像采集的代码示例：

#include "xil_printf.h"
#include "xparameters.h"
#include "xiicps.h"
#include "xgpio.h"
#include "xscugic.h"
#include "xil_exception.h"
#include "xaxidma.h"
#include "xtime_l.h"

#define CAMERA_ADDR 0x78
#define IIC_DEVICE_ID XPAR_XIICPS_0_DEVICE_ID
#define GPIO_DEVICE_ID XPAR_XGPIOPS_0_DEVICE_ID
#define DMA_DEV_ID XPAR_AXIDMA_0_DEVICE_ID
#define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID
#define INTC_GPIO_INTERRUPT_ID XPAR_XGPIOPS_0_INTR

#define WIDTH 640
#define HEIGHT 480
#define FRAME_SIZE WIDTH*HEIGHT*2 // 2 bytes per pixel

XIicPs Iic;
XGpio Gpio;
XScuGic Intc;
XAxiDma Dma;

u8 CameraConfig[][2] =
{
    {0x3a, 0x04},
    {0x67, 0xC0},
    {0x68, 0x80},
    {0x14, 0x38},
    {0x24, 0x3c},
    {0x25, 0x36},
    {0x26, 0x72},
    {0x27, 0x08},
    {0x6b, 0x4a},
    {0x13, 0xe0},
    {0x01, 0x80},
    {0x02, 0x80},
    {0x11, 0x80},
    {0x3d, 0x0f},
    {0x5a, 0x57},
    {0x5b, 0x3d},
    {0x5c, 0x11},
    {0xd3, 0x04},
    {0xe0, 0x00},
    {0xff, 0xff}
};

u16 FrameBuffer[FRAME_SIZE]; // Buffer to hold a single frame

void CameraInit()
{
    int i;
    u8 RegValue;

    XIicPs_Config *Config = XIicPs_LookupConfig(IIC_DEVICE_ID);
    XIicPs_CfgInitialize(&Iic, Config, Config->BaseAddress);
    XIicPs_Reset(&Iic);

    XGpio_Initialize(&Gpio, GPIO_DEVICE_ID);
    XGpio_SetDataDirection(&Gpio, 1, 0xffffffff);
    XGpio_DiscreteWrite(&Gpio, 1, 0);

    for (i = 0; CameraConfig[i][0] != 0xff; i++)
    {
        XIicPs_MasterSendPolled(&Iic, CameraConfig[i], 2, CAMERA_ADDR);
        while (XIicPs_BusIsBusy(&Iic));
    }

    RegValue = XGpio_DiscreteRead(&Gpio, 1);
    RegValue |= 0x01;
    XGpio_DiscreteWrite(&Gpio, 1, RegValue);
}

void DmaConfig()
{
    XAxiDma_Config *Config = XAxiDma_LookupConfig(DMA_DEV_ID);
    XAxiDma_CfgInitialize(&Dma, Config);
    XAxiDma_Reset(&Dma);
    while (!XAxiDma_ResetIsDone(&Dma));

    XAxiDma_IntrDisable(&Dma, XAXIDMA_IRQ_ALL_MASK, XAXIDMA_DEVICE_TO_DMA);
    XAxiDma_IntrDisable(&Dma, XAXIDMA_IRQ_ALL_MASK, XAXIDMA_DMA_TO_DEVICE);

    XAxiDma_SetupInterruptSystem(&Dma, INTC_DEVICE_ID, XAXIDMA_DEVICE_TO_DMA);
}

void StartDma()
{
    XAxiDma_SimpleTransfer(&Dma, (u32)FrameBuffer, FRAME_SIZE, XAXIDMA_DEVICE_TO_DMA);
}

void SetupInterrupt()
{
    XScuGic_Config *Config = XScuGic_LookupConfig(INTC_DEVICE_ID);
    XScuGic_CfgInitialize(&Intc, Config, Config->CpuBaseAddress);
    Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT, (Xil_ExceptionHandler)XScuGic_InterruptHandler, &Intc);
    Xil_ExceptionEnable();

    XScuGic_Connect(&Intc, INTC_GPIO_INTERRUPT_ID, (Xil_ExceptionHandler)StartDma, NULL);
    XScuGic_Enable(&Intc, INTC_GPIO_INTERRUPT_ID);

    XGpio_InterruptEnable(&Gpio, XGPIO_IR_CH1_MASK);
    XGpio_InterruptGlobalEnable(&Gpio);
}

int main()
{
    XTime tStart, tEnd;

    Xil_ICacheEnable();
    Xil_DCacheEnable();

    DmaConfig();
    CameraInit();
    SetupInterrupt();

    XTime_GetTime(&tStart);
    while (1)
    {
        // Wait for interrupt
    }
    XTime_GetTime(&tEnd);

    xil_printf("Frame captured in %llu clock cycles.\n", 2*(tEnd - tStart));

    Xil_DCacheDisable();
    Xil_ICacheDisable();

    return 0;
}

该代码使用了Zynq-7000的I2C和DMA模块，以及一个GPIO来触发DMA传输。在本例中，OV5640摄像头的I2C地址为0x78，使用了一组配置寄存器来设置摄像头的参数。DMA用于将帧缓冲区中的数据传输到内存中。当GPIO触发时，DMA传输开始，将采集到的数据存储在FrameBuffer数组中。