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原子的SD_LCD例程，纯寄存器点亮

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minichao9901 edited this page May 12, 2024 · 1 revision

用ILA抓寄存器序列

  • 注意使用capture control功能
  • 一共44个寄存器。注意要设置这个Trigger起始位置要<44，否则Trigger不到 image
  • 输出结果导出为csv表，注意其中有的Wdata的数据是0x1e0，这种导入到csv后，被识别成浮点的1E0，也就是1，导致我们的寄存器配置错误。需要手动把它改过来。这个错误很隐蔽，不容易发现。 image

c代码如下，结果正确

// --------------------------------------------------------------------
// Copyright (c) 2019 by MicroPhase Technologies Inc.
// --------------------------------------------------------------------
//
// Permission:
//
//   MicroPhase grants permission to use and modify this code for use
//   in synthesis for all MicroPhase Development Boards.
//   Other use of this code, including the selling
//   ,duplication, or modification of any portion is strictly prohibited.
//
// Disclaimer:
//
//   This VHDL/Verilog or C/C++ source code is intended as a design reference
//   which illustrates how these types of functions can be implemented.
//   It is the user's responsibility to verify their design for
//   consistency and functionality through the use of formal
//   verification methods.  MicroPhase provides no warranty regarding the use
//   or functionality of this code.
//
// --------------------------------------------------------------------
//
//                     MicroPhase Technologies Inc
//                     Shanghai, China
//
//                     web: http://www.microphase.cn/
//                     email: support@microphase.cn
//
// --------------------------------------------------------------------
// --------------------------------------------------------------------
//
// Major Functions:
//
// --------------------------------------------------------------------
// --------------------------------------------------------------------
//
//  Revision History:
//  Date          By            Revision    Change	 Description
//---------------------------------------------------------------------
//2020-02-22      Wang			1.0          		Original
//2020-                         1.1
// --------------------------------------------------------------------
// --------------------------------------------------------------------

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "xil_types.h"
#include "xil_cache.h"
#include "xparameters.h"
#include "xaxivdma.h"
#include "xaxivdma_i.h"
#include "display_ctrl/display_ctrl.h"
#include "vdma_api/vdma_api.h"
#include "ff.h"
#include "sleep.h"

//宏定义
#define BYTES_PIXEL        3                          //像素字节数，RGB888占3个字节
#define DYNCLK_BASEADDR    XPAR_AXI_DYNCLK_0_BASEADDR //动态时钟基地址
#define VDMA_ID            XPAR_AXIVDMA_0_DEVICE_ID   //VDMA器件ID
#define DISP_VTC_ID        XPAR_VTC_0_DEVICE_ID       //VTC器件ID

//函数声明
void load_sd_bmp(u8 *frame);

//全局变量
XAxiVdma     vdma;
DisplayCtrl  dispCtrl;
VideoMode    vd_mode;
//frame buffer的起始地址
unsigned int const frame_buffer_addr = (XPAR_PS7_DDR_0_S_AXI_BASEADDR + 0x1000000);

void init()
{
	Xil_Out32(0x43000000,0x4);
	Xil_Out32(0x43000000,0x0001000a);
	Xil_Out32(0x43000054,0x960);
	Xil_Out32(0x43000058,0x960);
	Xil_Out32(0x4300005c,0x1100000);
	Xil_Out32(0x43000000,0x0001400a);
	Xil_Out32(0x43000000,0x0001400b);
	Xil_Out32(0x43000050,0x1e0);
	//usleep(1000);

	Xil_Out32(0x43c10008,0x800083);
	Xil_Out32(0x43c1000c,0x800411);
	Xil_Out32(0x43c10010,0x0);
	Xil_Out32(0x43c10014,0x82);
	Xil_Out32(0x43c10018,0xd2cfa401);
	Xil_Out32(0x43c1001c,0x006300ff);
	Xil_Out32(0x43c10000,0x1);
	//usleep(1000);

	Xil_Out32(0x43c10008,0x800083);
	Xil_Out32(0x43c1000c,0x800411);
	Xil_Out32(0x43c10010,0x0);
	Xil_Out32(0x43c10014,0x82);
	Xil_Out32(0x43c10018,0xd2cfa401);
	Xil_Out32(0x43c1001c,0x006300ff);
	Xil_Out32(0x43c10000,0x0);
	Xil_Out32(0x43c10000,0x1);
	usleep(1000);   /*这个delay是必须要有的，否则时钟配不成功(因为有个PLL要锁定)*/

	Xil_Out32(0x43c00000,0x2);
	Xil_Out32(0x43c0006c,0x70);
	Xil_Out32(0x43c00070,0x421);
	Xil_Out32(0x43c00074,0x020e020e);
	Xil_Out32(0x43c00060,0x01e00320);
	Xil_Out32(0x43c00094,0x1e0);
	Xil_Out32(0x43c00078,0x03c80348);
	Xil_Out32(0x43c00080,0x01eb01e9);
	Xil_Out32(0x43c0008c,0x01eb01e9);
	Xil_Out32(0x43c00068,0x2);
	Xil_Out32(0x43c0007c,0x3200320);
	Xil_Out32(0x43c00084,0x3480348);
	Xil_Out32(0x43c00088,0x3200320);
	Xil_Out32(0x43c00090,0x3480348);
	Xil_Out32(0x43c0007c,0x3200320);
	Xil_Out32(0x43c00084,0x3480348);
	Xil_Out32(0x43c00088,0x3200320);
	Xil_Out32(0x43c00090,0x3480348);
	Xil_Out32(0x43c00000,0x03f7ef02);
	Xil_Out32(0x43c00000,0x03f7ef06);
	//usleep(1000);
}


int main(void)
{
	if(0){
		//设置分辨率
		vd_mode = VMODE_800x480;
		//配置VDMA
		run_vdma_frame_buffer(&vdma, VDMA_ID, vd_mode.width, vd_mode.height,
								frame_buffer_addr,0, 0,ONLY_READ);

		//初始化Display controller
		DisplayInitialize(&dispCtrl, DISP_VTC_ID, DYNCLK_BASEADDR);
		//设置VideoMode
		DisplaySetMode(&dispCtrl, &vd_mode);
		DisplayStart(&dispCtrl);
	}

	if(1){
		init();
	}

	//读取SD卡图片并显示
	load_sd_bmp((u8*)frame_buffer_addr);

    return 0;
}

//从SD卡中读取BMP图片
void load_sd_bmp(u8 *frame)
{
	static 	FATFS fatfs;
	FIL 	fil;
	u8		bmp_head[54];
	UINT 	*bmp_width,*bmp_height,*bmp_size;
	UINT 	br;
	int 	i;

	f_mount(&fatfs,"",1);//挂载文件系统

	f_open(&fil,"shatan_800x480.bmp",FA_READ);	//打开文件
	xil_printf("open bmp\n\r");
	f_lseek(&fil,0);//移动文件读写指针到文件开头

	f_read(&fil,bmp_head,54,&br);//读取BMP文件头

	//BMP图片的分辨率和大小
	bmp_width  = (UINT *)(bmp_head + 0x12);
	bmp_height = (UINT *)(bmp_head + 0x16);
	bmp_size   = (UINT *)(bmp_head + 0x22);
	xil_printf("bmp information:\n\r");
	xil_printf(" width  = %d,\n\r height = %d,\n\r size   = %d bytes \n\r",
			*bmp_width,*bmp_height,*bmp_size);

	//读出图片，写入DDR
	for(i=*bmp_height-1;i>=0;i--){
		f_read(&fil,frame+i*(*bmp_width)*3,(*bmp_width)*3,&br);
	}
	//关闭文件
	f_close(&fil);

	Xil_DCacheFlush();     //刷新Cache，将数据更新至DDR3中
	xil_printf("display bmp\n\r");

}
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