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How do I know what frecuency should I select to conenct eMMC / SD
for instance, am playing with a SD Adapter and a microSD Card.
I can connect
I have also connected some phones via ISP...
OK
Am having problems with teh SD Card trying to read or write anything.
This SD card is for testing and is correctly working.
When trying to read USer partition I always get error.
I dont get this error when I work via ISP directly in phones, maybe something is wrong in my SD Adapter.
but I have followed the instructions posted in the forum.
any suggestion ?
PD: I have tried other SD Cards... am specially interested on removing Write Protection from those microsdcards which magicallly become write protected, and fix otehr which reports wrong size and corruptions.
Dont know if this will be possible.
You tell me
for instance, am playing with a SD Adapter and a microSD Card.
I can connect
Code:
Connecting to the SD/eMMC Card...OK Set I/O Voltage reads as 3.31V, SD_CLK Frequency is 453 KHz Memory Type .......................... SDHC Manufacturer ID ...................... 0x00 OEM/Application ID ................... " " Product Name ......................... "00000" Package .............................. Removable User Area Partition Size ............. 0x0001DC400000 Bytes (7.44 GB) OCR Register ......................... 0xC0FF8000 (High Voltage, High Capacity) Write Protection Bits ................ NONE Chip Revision ........................ 1.0 Serial Number ........................ 0x00006691 Memory Manufacturing Date ............ August, 2014
OK
Am having problems with teh SD Card trying to read or write anything.
This SD card is for testing and is correctly working.
When trying to read USer partition I always get error.
Code:
Open serial port...OK Connecting to the RIFF Box...OK Firmware Version: 1.40 (RIFFBOX1), JTAG Manager Version: 1.62 Connecting to the SD/eMMC Card...OK Set I/O Voltage reads as 3.31V, SD_CLK Frequency is 453 KHz Detected SDHC Chip, ID: 0x00/" " (00000), User Area Partition = 0x0001DC400000 Bytes (7.44 GB) Reading "User Area Partition" address space from 0x000000000000 to 0x0001DC3FFFFF Failed to receive answer to READ command.
but I have followed the instructions posted in the forum.
any suggestion ?
PD: I have tried other SD Cards... am specially interested on removing Write Protection from those microsdcards which magicallly become write protected, and fix otehr which reports wrong size and corruptions.
Dont know if this will be possible.
You tell me
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