8 gig sd card

Directory public static File Getdownloadcachedirectory () Ordinary Get the downloaded cache directory public static File getExternalStorageDirectory () Ordinary Get the Extended storage directory public static String Getexternalstoragestate () Ordinary Get the status of an extended storage device public static File Getrootdirectory () Ordinary Get root directory public static Boolean is

-terminated shell command string,This line of command will be uploaded to Bin/sh and using the-C flag,Then the shell will execute this command to read from this string."R"); Standard output of a file pointer connected to a shell command if (NULL = fp){Break} while (NULL!= fgets (castdoutline, sizeof ( Castdoutline), fp) { //If you find the SD card mount path you want, if (judgment condition

for Android2.3 of systems,environment.getexternalstoragedirectory () Get the directory is built-in SD card or external SD card is not guaranteed, and the handset manufacturer's modification, Can only be judged by environment.isexternalstorageremovable ().,If True is external, because external can be uninstalled. (But I

This section provides sample code for the msp430f5438a SPI Read and write SD card, using the official library msp430_driverlib_2_60_00_02, using IAR for msp430 6.3 by compiling. This section of the code does not differentiate the SD card, so only the SDHC card is operated, a

specific command set. Class10-11: Reserved. 3.3.sd card Workflow First, let's take a look at how the operating system runs on the ARM processor.Read and Write the current SD card. The process can be divided into three major steps: initializing the SD

);//this thing is disgusting. In the SD card and the parameters of the MMC card is not the same as the parameters of the MMC card is set to an RCA value, but the SD card is read by the value of RCA, the above

, Msc_cmdat_bus_width_4bit | msc_cmdat_response_r1| Msc_cmdat_busy, MSC_CMDAT_RESPONSE_R1);//Response type R1b//while (! INREG16 (A_msc_stat (0)) (1 Mmc_init_gpio (); __msc_reset (); Mmc_irq_mask (); OUTREG32 (A_MSC_CLKRT (0), 7),//extclk/128//outreg32 (A_MSC_LPM (0), 0x01); sd2_0 = 0; Default to standard SD card resp = mmc_cmd (0, 0, 0);//First 80 clocks RESP = mmc_cmd (

, Msc_cmdat_bus_width_4bit | msc_cmdat_response_r1| Msc_cmdat_busy, MSC_CMDAT_RESPONSE_R1);//Response type R1b//while (! INREG16 (A_msc_stat (0)) (1 Mmc_init_gpio (); __msc_reset (); Mmc_irq_mask (); OUTREG32 (A_MSC_CLKRT (0), 7),//extclk/128//outreg32 (A_MSC_LPM (0), 0x01); sd2_0 = 0; Default to standard SD card resp = mmc_cmd (0, 0, 0);//First 80 clocks RESP = mmc_cmd (

eMMCThe Sdio:secure Digital Input and Output CARD,SD standard defines a peripheral interface, which is used by many device modules. such as Wifi,gps,bluetooth1.2 SD card FeaturesThe following are some of the features of the SD card