智能车制作

标题: 求高手 [打印本页]

作者: yaohuan824 时间: 2013-4-20 14:18
标题: 求高手
最近在弄TFT屏幕和SD卡，已经用51刷屏，显示图片，读卡了，移植到430单片机上时，可刷屏，可显示图片，可是读卡没成功。估计是c语言问题，请问keil里面的这一句“unsigned char xdata DATA[512];”，怎么改成IAR里面的语句啊。
unsigned char SdReadBlock(  unsigned char  *Block, unsigned long address,int len)
{
unsigned int count;//Block size is 512 bytes exactly
               //First Lower SS
               //printf("MMC_read_block\n");

SD_CS_0;
                  //Then send write command
SdCommand(0x11,address,0xff);

if(SdResponse()==0x00)
{
               //command was a success - now send data
               //start with DATA TOKEN = 0xFE
while(SdRead()!=0xfe);

for(count=0;count<len;count++) *Block++=SdRead();

for(;count<512;count++) SdRead();
                     //data block sent - now send checksum
SdRead();
SdRead();
                  //Now read in the DATA RESPONSE token
SD_CS_1;
SdRead();
return 1;
}
                  //printf("Command 0x11 (Read) was not received by the MMC.\n");
return 0;
}

对应的这一段怎么改，DATA[]就是指针*Block对应的数组、、、

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