初始化vivado 的 HDMI Transmittrt Subsystem 系统 的SDK代码

下面是使用 Vivado 的 HDMI Transmitter Subsystem IP 在 SDK 中进行初始化的示例代码：

#include "xparameters.h"
#include "xil_printf.h"
#include "xvtc.h"
#include "xvidc.h"
#include "xaxivdma.h"
#include "xhdmi.h"

// HDMI Transmitter Subsystem IP 实例的设备 ID
#define HDMI_DEVICE_ID          XPAR_AXI_HDMI_TX_0_DEVICE_ID
#define VDMA_DEVICE_ID          XPAR_AXIVDMA_0_DEVICE_ID
#define VTC_DEVICE_ID           XPAR_V_TC_0_DEVICE_ID
#define HDMI_IIC_SCLK_RATE      100000

// 视频分辨率定义
#define VIDEO_RESOLUTION_XGA    XVIDC_VM_XGA_60Hz
#define VIDEO_RESOLUTION_HD     XVIDC_VM_1080P_60Hz

// 视频输入和输出缓存的大小
#define HDMI_OUT_BUFFER_SIZE    1920*1080*4
#define HDMI_IN_BUFFER_SIZE     1920*1080*4

// HDMI Transmitter Subsystem IP 实例的指针
static XHdmi Hdmi;
// AXI VDMA 实例的指针
static XAxiVdma AxiVdma;
// VTC 实例的指针
static XVtc Vtc;

// 视频输入和输出缓存的地址
static u32 HdmiOutBuffer[HDMI_OUT_BUFFER_SIZE/4];
static u32 HdmiInBuffer[HDMI_IN_BUFFER_SIZE/4];

// 初始化 HDMI Transmitter Subsystem IP 的函数
int InitHdmiTxSubsystem(XHdmi *HdmiPtr, XAxiVdma *AxiVdmaPtr, XVtc *VtcPtr)
{
    int Status;

    // 初始化 HDMI Transmitter Subsystem IP
    XHdmi_Config *HdmiConfig = XHdmi_LookupConfig(HDMI_DEVICE_ID);
    if (!HdmiConfig)
    {
        xil_printf("Error: Failed to lookup HDMI Transmitter Subsystem IP config.\n\r");
        return XST_FAILURE;
    }
    Status = XHdmi_CfgInitialize(HdmiPtr, HdmiConfig);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to initialize HDMI Transmitter Subsystem IP.\n\r");
        return XST_FAILURE;
    }

    // 初始化 AXI VDMA
    XAxiVdma_Config *AxiVdmaConfig = XAxiVdma_LookupConfig(VDMA_DEVICE_ID);
    if (!AxiVdmaConfig)
    {
        xil_printf("Error: Failed to lookup AXI VDMA config.\n\r");
        return XST_FAILURE;
    }
    Status = XAxiVdma_CfgInitialize(AxiVdmaPtr, AxiVdmaConfig, AxiVdmaConfig->BaseAddress);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to initialize AXI VDMA.\n\r");
        return XST_FAILURE;
    }

    // 初始化 VTC
    XVtc_Config *VtcConfig = XVtc_LookupConfig(VTC_DEVICE_ID);
    if (!VtcConfig)
    {
        xil_printf("Error: Failed to lookup VTC config.\n\r");
        return XST_FAILURE;
    }
    Status = XVtc_CfgInitialize(VtcPtr, VtcConfig, VtcConfig->BaseAddress);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to initialize VTC.\n\r");
        return XST_FAILURE;
    }

    // 配置 HDMI Transmitter Subsystem IP
    Status = XHdmi_CfgInitialize(HdmiPtr, HdmiConfig);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to configure HDMI Transmitter Subsystem IP.\n\r");
        return XST_FAILURE;
    }

    // 配置 AXI VDMA
    Status = XAxiVdma_DmaConfig(AxiVdmaPtr, XAXIVDMA_WRITE, (u32)HdmiOutBuffer, HDMI_OUT_BUFFER_SIZE, 0);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to configure AXI VDMA for write.\n\r");
        return XST_FAILURE;
    }
    Status = XAxiVdma_DmaConfig(AxiVdmaPtr, XAXIVDMA_READ, (u32)HdmiInBuffer, HDMI_IN_BUFFER_SIZE, 0);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to configure AXI VDMA for read.\n\r");
        return XST_FAILURE;
    }

    // 配置 VTC
    Status = XVtc_EnableGenerator(VtcPtr);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to enable VTC generator.\n\r");
        return XST_FAILURE;
    }
    XVtc_SourceSelect(VtcPtr, XVTC_SOURCE_SEL_RGB, XVTC_CHROMA_SRC_EXT);
    XVtc_SetGeneratorTiming(VtcPtr, VIDEO_RESOLUTION_HD);

    return XST_SUCCESS;
}

int main()
{
    int Status;

    // 初始化 HDMI Transmitter Subsystem IP
    Status = InitHdmiTxSubsystem(&Hdmi, &AxiVdma, &Vtc);
    if (Status != XST_SUCCESS)
    {
        xil_printf("Error: Failed to initialize HDMI Transmitter Subsystem IP.\n\r");
        return XST_FAILURE;
    }

    // 进行其他操作，例如启动视频传输等

    return XST_SUCCESS;
}

此代码示例可以帮助您初始化 HDMI Transmitter Subsystem IP，并将其连接到 AXI VDMA 和 VTC。您可以根据需要进行修改和扩展，以满足您的具体需求。