2440 wince5 camera驱动问题

malaga 2009-2-17 17:58 楼主

//以下就是修改过的地方，和出现的问题，主要目的是想先调试camera的Preview模式，使用三星的应用测试程序CamTest.exe, 点击Play播放，再点击停止。

//函数执行到memcpy就出现如下提示：Data Abort: Thread=83c7c794 Proc=81f9d340 'device.exe'
            //                               AKY=00000005 PC=03fc36d0(coredll.dll+0x000536d0)  RA=02e13448(camera.dll+0x00003448) BVA=3010c600 FSR=00000005

//Virtual_Alloc函数中添加的代码主要是为了得到连续的Preview DMA和Codec DMA的Frame Buffer
//串口调试得到 g_PhysPreviewAddr = 0x32ec3000
//          g_PhysCodecAddr = 0x32ef5000
void Virtual_Alloc()
{
PBYTE pVirtPreviewAddr = NULL;
PBYTE pVirtCodecAddr = NULL;

DMA_ADAPTER_OBJECT Adapter1, Adapter2;

memset(&Adapter1, 0, sizeof(DMA_ADAPTER_OBJECT));
Adapter1.InterfaceType = Internal;
Adapter1.ObjectSize = sizeof(DMA_ADAPTER_OBJECT);

memset(&Adapter2, 0, sizeof(DMA_ADAPTER_OBJECT));
Adapter2.InterfaceType = Internal;
Adapter2.ObjectSize = sizeof(DMA_ADAPTER_OBJECT);

pVirtPreviewAddr = (PBYTE)HalAllocateCommonBuffer(&Adapter1, Preview_Mem_Size, &g_PhysPreviewAddr, FALSE);
RETAILMSG(TRUE, (TEXT("Camera:Virtual_Alloc() g_PhysPreviewAddr = 0x%x\r\n"), g_PhysPreviewAddr.LowPart));
if (pVirtPreviewAddr == NULL)
{
      RETAILMSG(TRUE, (TEXT("Camera:Virtual_Alloc() - Failed to allocate DMA buffer for Preview.\r\n")));
}

pVirtCodecAddr = (PBYTE)HalAllocateCommonBuffer(&Adapter2, Codec_Mem_Size, &g_PhysCodecAddr, FALSE);
RETAILMSG(TRUE, (TEXT("Camera:Virtual_Alloc() g_PhysCodecAddr = 0x%x\r\n"), g_PhysCodecAddr.LowPart));
if (pVirtCodecAddr == NULL)
{
      RETAILMSG(TRUE, (TEXT("Camera:Virtual_Alloc() - Failed to allocate DMA buffer for Codec.\r\n")));
}
...................
.........................下面代码省略没有贴出，就是原来的代码，上面的是我添加的。

}

//g_PhysPreviewAddr = 0x32ec3000
//  g_PhysCodecAddr = 0x32ef5000 这部分串口监控过，主要是传了g_PhysCodecAddr.LowPart和
//g_PhysCodecAddr 两个参数，其它没有修改。
CamInit(320, 240, 320, 240, 0, 0, (U32)(g_PhysCodecAddr.LowPart), (U32)(g_PhysPreviewAddr.LowPart));

//以下部分做了部分修改，主要就是修改了Frame Buffer地址和
void Display_Cam_Image(U32 pos_x, U32 pos_y, U32 size_x, U32 size_y, U8 port)
{
U8 *buffer_rgb;
U32 y;
int temp

{
temp= (s2440CAM->rCIPRSTATUS>>26)&3;

switch (temp)
{
case 0:
buffer_rgb = (U8 *)s2440CAM->rCIPRCLRSA1;
break;
case 1:
buffer_rgb = (U8 *)s2440CAM->rCIPRCLRSA2;
break;
case 2:
buffer_rgb = (U8 *)s2440CAM->rCIPRCLRSA3;
break;
case 3:
buffer_rgb = (U8 *)s2440CAM->rCIPRCLRSA4;
break;
default :
buffer_rgb = (U8 *)s2440CAM->rCIPRCLRSA1;
break;
}
}


   buffer_rgb += VIRTUAL_UA_ADDRESS_OFFSET;       //此时buffer_rgb = 0xa2ec3000 =  buffer_rgb + 0x70000000 = 0x32ec3000 + 0x70000000
                                                //把VIRTUAL_CA_FRAMEBUF_BASE = 0xa0100000或者0x80100000都设置过
   for (y=0; y {
            //函数执行到memcpy就出现如下提示：Data Abort: Thread=83c7c794 Proc=81f9d340 'device.exe'
            //                               AKY=00000005 PC=03fc36d0(coredll.dll+0x000536d0)RA=02e13448(camera.dll+0x00003448) BVA=3010c600 FSR=00000005

memcpy((void *)(VIRTUAL_CA_FRAMEBUF_BASE+ (QCIF_XSIZE*2*pos_y + pos_x) +    y*QCIF_XSIZE*2), (void *)buffer_rgb,  (QCIF_XSIZE)*2);
RETAILMSG(1, (TEXT("Display_Cam_Image 22222222\r\n"))); //该打印语句，没有输出，也就是没有执行到这步
buffer_rgb += (QCIF_XSIZE*2);
}

}