esint8 if_initInterface(hwInterface* file, eint8* opts)
{
euint32 sc;
//初始化硬件SPI 并且唤醒SD卡
if_spiInit(file); /* init at low speed */
//初始化SD卡并判断是1.X还是2.X打上标记。
if (sd_Init(file) < 0)
{
DBG((TXT("Card failed to init, breaking up...\n")));
return(-1);
}
//判断SD卡状态无实际意义
if (sd_State(file) < 0)
{
DBG((TXT("Card didn't return the ready state, breaking up...\n")));
return(-2);
}
sd_getDriveSize(file, &sc);//取得SD卡的扇区总字节数，
file->sectorCount = sc / 512; //计算扇区总数，只要把字节总数除以512就好
if ( (sc % 512) != 0)
{
file->sectorCount--; //对不非整数个的扇区处理舍去一个凑够整数
}
DBG((TXT("Drive Size is %lu Bytes (%lu Sectors)\n"), sc, file->sectorCount));
DBG((TXT("Init done...\n")));
return(0);
}
esint8
if_initInterface(hwInterface* file, eint8* opts)
{
euint32 sc;
if_spiInit(file);
if(sd_Init(file)<0) {
DBG((TXT("Card failed to init, breaking up...\n")));
return(-1);
}
if(sd_State(file)<0){
DBG((TXT("Card didn't return the ready state, breaking up...\n")
));
return(-2);
}
sd_getDriveSize(file, &sc);
file->sectorCount = sc/512;
DBG((TXT("Card Capacity is %lu Bytes (%lu Sectors)\n"), sc, file->sectorCount));
return(0);
}
esint8 if_initInterface(hwInterface* file, eint8* opts)
{
euint32 sc;
if_spiInit(file);
if_spiSelectDevice(file);
if(sd_Init(file)<0) {
DBG((TXT("Card failed to init, breaking up...\n")));
if_spiUnselectDevice(file);
return(-1);
}
if(sd_State(file)<0){
DBG((TXT("Card didn't return the ready state, breaking up...\n")));
if_spiUnselectDevice(file);
return(-2);
}
if_spiUnselectDevice(file);
/* get file->sectorCount (do not use hardcoded = 4 ) */
if_getDriveSize(file, &sc);
file->sectorCount = sc/512;
if( (sc%512) != 0) {
file->sectorCount--;
}
DBG((TXT("Card Capacity is %lu Bytes (%lu Sectors)\n"), sc, file->sectorCount));
DBG((TXT("Init done...\n")));
return(0);
}
esint8 if_initInterface(hwInterface* file, eint8* opts)
{
euint32 sc;
if_spiInit(file); /* init at low speed */
if(sd_Init(file)<0) {
DBG((TXT("Card failed to init, breaking up...\n")));
return(-1);
}
if(sd_State(file)<0){
DBG((TXT("Card didn't return the ready state, breaking up...\n")));
return(-2);
}
// file->sectorCount=4; /* FIXME ASAP!! */
sd_getDriveSize(file, &sc);
file->sectorCount = sc/512;
if( (sc%512) != 0) {
file->sectorCount--;
}
DBG((TXT("Drive Size is %lu Bytes (%lu Sectors)\n"), sc, file->sectorCount));
/* increase speed after init */
#if ( HW_ENDPOINT_LPC2000_SPINUM == 1 )
SSPCR0 = ((8-1)<<0) | (0<<CPOL);
#endif
if_spiSetSpeed(SPI_PRESCALE_MIN);
// if_spiSetSpeed(100); /* debug - slower */
DBG((TXT("Init done...\n")));
return(0);
}
int8_t init_interface()
{
uint32_t sc;
if_spiInit(file); /* init at low speed */
if(sd_Init(file)<0) {
printf("Card failed to init, breaking up...\n\r");
return(-1);
}
if(sd_State(file)<0){
printf("Card didn't return the ready state, breaking up...\n\r");
return(-2);
}
// file->sectorCount=4; /* FIXME ASAP!! */
sd_getDriveSize(file, &sc);
file->sectorCount = sc/512;
if( (sc%512) != 0) {
file->sectorCount--;
}
printf("Drive Size is %d Bytes (%d sectors)\n\r ", sc, file->sectorCount);
if_spiSetSpeed(SPI_PRESCALE_MIN);
// if_spiSetSpeed(100); /* debug - slower */
printf("Init done...\n\r");
return 0;
}
esint8 if_initInterface(hwInterface* file, eint8* opts)
{
if_spiInit(file);
if(sd_Init(file)<0) {
DBG((TXT("Card failed to init, breaking up...\n")));
return(-1);
}
if(sd_State(file)<0){
DBG((TXT("Card didn't return the ready state, breaking up...\n")));
return(-2);
}
file->sectorCount=4; /* FIXME ASAP!! */
DBG((TXT("Init done...\n")));
return(0);
}
esint8 if_initInterface(hwInterface* file, eint8* opts)
{
euint32 size;
if_spiInit(file);
if(sd_Init(file)<0) {
DBG((TXT("Card failed to init, breaking up...\n")));
return(-1);
}
if(sd_State(file)<0){
DBG((TXT("Card didn't return the ready state, breaking up...\n")));
return(-2);
}
sd_getDriveSize(file,&size);
file->sectorCount=size>>9; /* FIXME ASAP!! */
DBG(TXT(("Card size:%d\n",size)));
DBG((TXT("Init done...\n")));
return(0);
}
esint8 if_initInterface(hwInterface* file, eint8* opts)
{
euint32 sc;
if_spiInit(file);
if(sd_Init(file)<0) {
return(-1);
}
if(sd_State(file)<0){
return(-2);
}
sd_getDriveSize(file, &sc);
file->sectorCount = sc/512;
if( (sc%512) != 0) {
file->sectorCount--;
}
return(0);
}
short if_initInterface(hwInterface* file, char* opts)
{
file->sectorCount=0;
return(if_spiInit(file));
}