📄 cardmng.c
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if(r1 != 0x00){
DisableCard(); //SET CS = 'H'
if(CardInitial() == CARD_ERR_NO){
goto reSend_w;
}
return CARD_ERR_CMDILLEGAL; // command is illegal
}
for(i = 0; i < MIN_NWR; i++){ //wait NWR(min)
SendBytes(DUMMY, 1);
}
SendBytes(DATA_TOKEN, 1); // send data token
SendBytes(buf, len); // send data
SendBytes(DUMMY, 1); // 2 bytes CRC
SendBytes(DUMMY, 1);
//check the data response
for(i = 0; i < 8; i++){ //should be at once
ReceiveBytes(&r1, 1);
r1 &= 0x1f;
if(r1 == 0x05){
break; // data accepted
}
if(r1 == 0x0b || r1 == 0x0d){
DisableCard(); //SET CS = 'H'
return CARD_ERR_WRITE; // data rejected due to CRC error or Write error
}
}
if(i == 8){
DisableCard(); //SET CS = 'H'
return CARD_ERR_TIMEOUT; // time out
}
// waiting for ready
while(1){
ReceiveBytes(&r1, 1);
if(r1 == 0xff){
break;
}
}
DisableCard(); //SET CS = 'H'
return CARD_ERR_NO;
}
/****************************************************************************/
/* FUNCTION： CardPowerOff */
/* DESCRIPTION：turn of card */
/* INPUTS： */
/* OUTPUTS： */
/****************************************************************************/
/* NAME DATE REMARKS */
/* ========== ============ ===========================*/
/* Victor 2004-07-30 create */
/****************************************************************************/
void CardPowerOff(void)
{
MMC_CS_ENABLE
*((volatile UINT8 *)0x3003ad) &= ~0xfc;
*((volatile UINT8 *)0x30038d) |= 0xe0;
*((volatile UINT8 *)0x30038c) &= ~0xe0;
MMC_PWR_DISABLE
}
void CardPowerOn(void)
{
UINT i;
CardPowerOff(); //wsl----121的是打开的
// MMC power down for 100ms [note.]must be conformed by WAI
for(i = 0; i < 0xcccc; i++){
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
for(i = 0; i < 0xcccc; i++){
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
// p16 is cs of the MMC in SPI model. set p16 high for dis-select MMC
MMC_CS_DISABLE
MMC_PWR_ENABLE
// MMC power up for 100ms [note.]must be conformed by WAI
for(i = 0; i < 0xcccc; i++){
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
for(i = 0; i < 0xcccc; i++){
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
// EFP31[1:0]=EFP32[1:0]=EFP33[1:0]=01(D[7:2]), set p31 to SDO. p32 to SPICLK, p33 to SDI
*((volatile UINT8 *)0x3003ad) &= ~0xfc;
*((volatile UINT8 *)0x3003ad) |= 0x54;
}
/****************************************************************************/
/* FUNCTION： CardInitial */
/* DESCRIPTION：Initialize card */
/* INPUTS */
/* OUTPUTS： CARD_ERR_NO Initial OK */
/* CARD_ERR_INEXISTENT card is not existent */
/* CARD_ERR_FORMAT file format is not supported */
/* output from ResetCard */
/* output from ConfigCard */
/* output from ReadBlock */
/****************************************************************************/
/* NAME DATE REMARKS */
/* ========== ============ ==========================*/
/* Victor 2004-07-30 create */
/****************************************************************************/
const UINT8 password[8] = {'v','i','c','t','o','r','l','i'};
BOOL IsCardPasswordIn(void)
{
UINT16 statusReg;
// unlock card
if(GetStatusReg(&statusReg) == CARD_ERR_NO){
if((statusReg & 0x0100) == 0x0000){ // unlocked
if(SetBlockLen(8+2) == CARD_ERR_NO){
if(LockOperate((UINT8 *)password, 8, LOCK_LOCK_PASSWORD) == CARD_ERR_NO){
if(GetStatusReg(&statusReg) == CARD_ERR_NO){
if((statusReg & 0x0100) == 0x0100){ // locked
LockOperate((UINT8 *)password, 8, LOCK_UNLOCK_PASSWORD);
SetBlockLen(512);
return TRUE;
}else{
SetBlockLen(512);
return FALSE;
}
}else{
SetBlockLen(512);
return FALSE;
}
}else{
SetBlockLen(512);
return FALSE;
}
}else{
return FALSE;
}
}else{
return TRUE;
}
}else{
return FALSE;
}
}
void UnlockCard(void)
{
UINT16 statusReg;
// unlock card
if(GetStatusReg(&statusReg) == CARD_ERR_NO){
if((statusReg & 0x0100) == 0x0100){ // locked
if(SetBlockLen(8+2) == CARD_ERR_NO){
LockOperate((UINT8 *)password, 8, LOCK_UNLOCK_PASSWORD);
SetBlockLen(512);
}
}
}
}
void LockCard(void)
{
UINT16 statusReg;
// unlock card
if(GetStatusReg(&statusReg) == CARD_ERR_NO){
if((statusReg & 0x0100) == 0x0000){ // unlocked
if(SetBlockLen(8+2) == CARD_ERR_NO){
LockOperate((UINT8 *)password, 8, LOCK_LOCK_PASSWORD);
SetBlockLen(512);
}
}
}
}
INT CardInitial(void)
{
UINT i, j;
UINT16 statusReg;
volatile INT retVal;
Delay10US(3000*2);
for(i = 0; i < 8; i++){
CardPowerOn();
SetDefaultTransferCondition();
/* Dummy clock 80 [clk] */
for(j = 0; j < 10; j++){
SendBytes(DUMMY, 1);
}
if((retVal = ResetCard()) == CARD_ERR_NO){
if((retVal = ConfigCard()) == CARD_ERR_NO){
UnlockCard();
/*
// set password
if(SetBlockLen(8+2) != CARD_ERR_NO){
asm("nop");
}
if(LockOperate((UINT8 *)password, 8, LOCK_SET_PASSWORD) != CARD_ERR_NO){
asm("nop");
}
if(GetStatusReg(&statusReg) != CARD_ERR_NO){
asm("nop");
}
if((statusReg & 0xff00) != 0){
asm("nop");
}
*/
// get card file system partition information
if((retVal = ReadBlock(0x0, 512, block)) == CARD_ERR_NO){
if((block[0x1fe] != 0x55) || (block[0x1ff] != 0xaa)){
retVal = CARD_ERR_FORMAT; // not fat format
}else{
if((block[0x36] == 'F') && (block[0x37] == 'A') && (block[0x38] == 'T') && (block[0x39] == '1') && (block[0x3a] == '6')){
cardPartition.firstSector = 0;
cardPartition.totalSector = *((UINT32 *)(&block[0x20]));
return CARD_ERR_NO;
}else{
cardPartition.state = block[0x1be];
cardPartition.beginHead = block[0x1bf];
cardPartition.beginSector = block[0x1c0] & 0x3f;
cardPartition.beginCylinder = (UINT16)block[0x1c1] + (((UINT16)(block[0x1c0] & 0xc0)) << 2);
cardPartition.type = block[0x1c2]; // must be 4 or 6 means FAT16
cardPartition.endHead = block[0x1c3];
cardPartition.endSector = block[0x1c4] & 0x3f;
cardPartition.endCylinder = (UINT16)block[0x1c5] + (((UINT16)(block[0x1c4] & 0xc0)) << 2);;
cardPartition.firstSector = (UINT32)block[0x1c6] + ((UINT32)block[0x1c7] << 8) + ((UINT32)block[0x1c8] << 16) + ((UINT32)block[0x1c9] << 24);
cardPartition.totalSector = (UINT32)block[0x1ca] + ((UINT32)block[0x1cb] << 8) + ((UINT32)block[0x1cc] << 16) + ((UINT32)block[0x1cd] << 24);
if((cardPartition.type != 0x04) && (cardPartition.type != 0x06)){
retVal = CARD_ERR_FORMAT; // not fat-16 format
}else{
return CARD_ERR_NO;
}
}
}
}
}
}
}
return retVal;
}
/****************************************************************************/
/* FUNCTION： CardIoCtrl */
/* DESCRIPTION：do nothing */
/* INPUTS： */
/* OUTPUTS： */
/* RETURN： */
/****************************************************************************/
/* NAME DATE REMARKS */
/* ========== ============ =======================*/
/* Victor 2004-07-30 create */
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