IoTGateway/BSP/Android/Gettingstarted/How to use SD/MMC Card - Revision history

Billy.soong at 06:28, 26 January 2017

2017-01-26T06:28:57Z

2017-01-26T06:28:13Z

2017-01-26T06:26:26Z

2017-01-26T06:25:46Z

2017-01-26T06:24:03Z

2017-01-26T06:14:26Z

2017-01-26T06:08:01Z

2017-01-26T05:54:28Z

2017-01-26T05:52:47Z

2017-01-25T08:55:03Z

@@ Line 26: / Line 26: @@
 <pre>/devices/soc0/soc/2100000.aips-bus/219c000.usdhc/mmc_host* auto auto defaults voldmanaged=sdcard:auto,encryptable=userdata
 </pre>
 == Check sysfs node ==

@@ Line 26: / Line 26: @@
 <pre>/devices/soc0/soc/2100000.aips-bus/219c000.usdhc/mmc_host* auto auto defaults voldmanaged=sdcard:auto,encryptable=userdata
 </pre>
 ==  ==

← Older revision		Revision as of 06:25, 26 January 2017
Line 39:		Line 39:

	== SD/MMC Card insertion ==		== SD/MMC Card insertion ==
−
−	~~== ==~~

	The kernel starts scanning once the SD card is inserted and create devices for each partition.		The kernel starts scanning once the SD card is inserted and create devices for each partition.

@@ Line 1: / Line 1: @@
 == Adoptable Storage ==
 Starting in Android 6.0, Android supports&nbsp;[https://source.android.com/devices/storage/adoptable.html ''adoptable''&nbsp;storage], which enables a user to set up the SD card as internal storage and store applications, their data, and media on an "adopted" SD card.&nbsp;Please&nbsp;refer to "Storage" section on the Android website&nbsp;[https://source.android.com/devices/storage/index.html https://source.android.com/devices/storage/index.html]
@@ Line 5: / Line 7: @@
 == Browse the SD ==
-Android 6 Marshmallow includes a&nbsp;built-in file manager feature to browse the SD card.
+Android 6 Marshmallow also includes a&nbsp;built-in file manager feature to browse the SD card.
 *Launch the&nbsp;'''Settings'''&nbsp;app.

@@ Line 30: / Line 30: @@
 <pre># cat /sys/block/mmcblk0/device/type
 MMC
-# cat /sys/block/mmcblk1/device/type
+# cat /sys/block/mmcblk2/device/type
 SD
 </pre>
@@ Line 42: / Line 42: @@
 The kernel starts scanning once the SD card is inserted and&nbsp;create devices for each partition.&nbsp;
-[[File:Sd04.JPG]]
+[[File:Sd04.JPG|RTENOTITLE]]
 == Write to SD ==
@@ Line 48: / Line 48: @@
 </pre>
-== Read and Verify ==
+== Read from SD ==
 <pre># dd if=/dev/block/mmcblk2 of=data1 bs=1 count=1024 skip=4096
 </pre>

@@ Line 1: / Line 1: @@
 == Adoptable Storage ==
 Starting in Android 6.0, Android supports&nbsp;[https://source.android.com/devices/storage/adoptable.html ''adoptable''&nbsp;storage], which enables a user to set up the SD card as internal storage and store applications, their data, and media on an "adopted" SD card.&nbsp;Please&nbsp;refer to "Storage" section on the Android website&nbsp;[https://source.android.com/devices/storage/index.html https://source.android.com/devices/storage/index.html]
@@ Line 29: / Line 25: @@
 </pre>
-==== Check sysfs node ====
+====  ====
 <pre># cat /sys/block/mmcblk0/device/type
 MMC
@@ Line 36: / Line 34: @@
 </pre>
-Back up
+== SD/MMC Card insertion ==
-<pre># dd if=/dev/mmcblk1 of=backup bs=1 count=1024 skip=4096
-</pre>
+==  ==
 == Write to SD ==
-<pre># dd if=data of=/dev/mmcblk1 bs=1 seek=4096
+<pre># dd if=data of=/dev/block/mmcblk2 bs=1 seek=4096
 </pre>
 == Read and Verify ==
-<pre># dd if=/dev/mmcblk1 of=data1 bs=1 count=1024 skip=4096
+<pre># dd if=/dev/block/mmcblk2 of=data1 bs=1 count=1024 skip=4096
 # diff data data1
 </pre>
@@ Line 58: / Line 56: @@
 <pre>Binary files data1 and data differ
 </pre>

← Older revision		Revision as of 05:54, 26 January 2017
Line 1:		Line 1:
−	Starting in Android 6.0, Android supports [https://source.android.com/devices/storage/adoptable.html ''adoptable'' storage], which enables a user to set up the SD card as internal storage and store applications, their data, and media on an "adopted" SD card. Please refer to "Storage~~" section on the Android website [https://source.android.com/devices/storage/index.html https://source.android.com/devices/storage/index.html]~~	+	== Adoptable Storage ==
		+




		+	Starting in Android 6.0, Android supports [https://source.android.com/devices/storage/adoptable.html ''adoptable'' storage], which enables a user to set up the SD card as internal storage and store applications, their data, and media on an "adopted" SD card. Please refer to "Storage" section on the Android website [https://source.android.com/devices/storage/index.html https://source.android.com/devices/storage/index.html]

	== Browse the SD ==		== Browse the SD ==