TI中文支持网SD卡是1G的FAT32格式的
我是调用CSL库函数进行操作的，在例程中加入MMC_read函数程序貌似就卡住了，查看了下网上的资料感觉像是阻塞，具体现象如下：
正常现象：
MMC Controller setup test…
SD card found
Asking SD card for its RCA…
RCA sent is 0xb368
Initialized card successfully
TEST PASSED
加了MMC_read函数的现象
MMC Controller setup test…
SD card found
Asking SD card for its RCA…
RCA sent is 0x
程序代码：
void main()
{
Uint16 mybuf[256],i,mybuf1[256];
CSL_init();
PLL_config(&myConfig);
printf ("MMC Controller setup test…\n");
mmc0 = MMC_open(MMC_DEV1);
MMC_setupNative(mmc0,&Init); //initialize the MMC controller
// MMC_getConfig(mmc0,&test);
MMC_sendGoIdle(mmc0); //Sends a broadcast GO_IDLE command
for (count=0;count<4016;count++)
asm(" NOP");
cardtype = MMC_sendOpCond(mmc0,0x00100000); //Sets the operating voltage window while in Native mode
if (cardtype == 0xFFFF){
printf ("Card not recognized\n");
exit(0);
}
//MMC_setCardType(card, cardtype);
if (cardtype == MMC_CARD){
printf ("Setting 10 as RCA value\n");
cid = &cardid;
/* Instruct all cards to send their Card Identification Data */
MMC_sendAllCID(mmc0,cid); // get the CID structure for all cards.
card = &cardalloc;
//retVal = MMC_setRca(mmc0,card,0x8DAB);
retVal = MMC_setRca(mmc0,card,2);
/* The host can request for the CSD in the standby state. This *
* structure contains the data outlined below */
printf ("Reading CSD structure for MMC card\n");
csd = &cardcsd;
retVal=MMC_sendCSD(mmc0);
MMC_getCardCsd(mmc0, csd);
} else {
printf ("SD card found\n");
cid = &cardid;
/* Instruct all cards to send their Card Identification Data */
SD_sendAllCID(mmc0,cid);
// printf ("The values in the CID of the SD card are:\n");
printf ("Asking SD card for its RCA…\n");
card = &cardalloc;
rca = SD_sendRca(mmc0,card);
printf ("RCA sent is 0x%x\n", rca);
/* The host can request for the CSD in the standby state. This *
* structure contains the data outlined below */
retVal = MMC_sendCSD(mmc0);
// sdcsd = &sdcardcsd;
// SD_getCardCsd(mmc0, sdcsd);
}
retVal = MMC_selectCard(mmc0,card);
MMC_read(mmc0,0x238200,mybuf,256);
for(i=0;i<6000;i++);
printf ("Initialized card successfully\n");
printf ("TEST PASSED\n");
while(1);
}
Shine：
C5509A CSL不支持SDHC FAT32格式。
user4731232：
回复 Shine:
那请问下我在格式化SD卡时，需要格式化成什么格式？我是win10系统，可选的格式化的文件格式是1、NTFS 2、FAT(默认) 3、FAT32 4、exFAT
我看了下我的SD卡，是1GB的，应该不是SDHC吧
Shine：
回复 user4731232:
对，你的卡1GB不是SDHC，选择2. FAT(默认) 。
user4731232：
回复 Shine:
将SD卡格式化为FAT(默认)，分配单元大小选为16KB和默认配置大小分别尝试了下，还是之前的现象
MMC Controller setup test…SD card foundAsking SD card for its RCA…RCA sent is 0x
请问下该怎么办？
Shine：
回复 user4731232:
csl里的read_write例程可以运行吗？
你是加了MMC_read函数程序才会出错？
user4731232：
回复 Shine:
是的，加了
MMC_read(mmc0,0x421600,mybuf,512); for(i=0;i<6000;i++);
这两句话就出现不能正常printf了，注释掉就好了
请问下csl的read_read例程在哪？我用的是CCS6.1
user4731232：
回复 Shine:
我的例程是开发板提供的，我也看了下网上的资料，也是这样操作的。加断点跑，直接跑不到这句话就停下了
加大heap size, stack size果然好了，非常感谢您
