Adding SD card to WRT54GL - Revision history

Ivc at 17:59, 9 June 2008

2008-06-09T17:59:10Z

← Older revision		Revision as of 17:59, 9 June 2008
Line 276:		Line 276:
	* [http://wiki.openwrt.org/OpenWrtDocs/KamikazeConfiguration/PackagesOnExternalMediaHowTo OpenWrt PackagesOnExternalMediaHowto]		* [http://wiki.openwrt.org/OpenWrtDocs/KamikazeConfiguration/PackagesOnExternalMediaHowTo OpenWrt PackagesOnExternalMediaHowto]
	* [http://wiki.openwrt.org/OpenWrtDocs/Hardware/Linksys/WRT54GL OpenWrt WRT54GL]		* [http://wiki.openwrt.org/OpenWrtDocs/Hardware/Linksys/WRT54GL OpenWrt WRT54GL]
			* [http://www.hardwarebook.info/MicroSD HwB microSD info]
			* [http://www.hardwarebook.info/Secure_Digital HwB Secure Digital info]

Ivc: /* Pin layout */

2008-06-09T01:21:43Z

Pin layout

← Older revision		Revision as of 01:21, 9 June 2008
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	\|style="background:#fff"\|3. '''VSS''' - Ground is a good thing		\|style="background:#fff"\|3. '''VSS''' - Ground is a good thing
	\|-		\|-
	\|style="background:#fff"\|4. '''VDD''' - Power - 3.3V will do		\|style="background:#fff"\|4. '''VDD''' - Power - 2.8 to 3.6V will do
	\|-		\|-
	\|style="background:#fff"\|5. '''CLK''' - The clock we generate for the SD card		\|style="background:#fff"\|5. '''CLK''' - The clock we generate for the SD card

Ivc: /* Pin layout */

2008-06-09T01:21:09Z

Pin layout

← Older revision		Revision as of 01:21, 9 June 2008
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	!style="background:#fff"\|Secure Digital - SD card		!style="background:#fff"\|Secure Digital - SD card
	\|-		\|-
	\|style="background:#fff"\|1. CS - Chip Select for the SD card		\|style="background:#fff"\|1. '''CS''' - Chip Select for the SD card
	\|-		\|-
	\|style="background:#fff"\|2. DI - Data in on the SD card		\|style="background:#fff"\|2. '''DI''' - Data in on the SD card
	\|-		\|-
	\|style="background:#fff"\|3. VSS - Ground is a good thing		\|style="background:#fff"\|3. '''VSS''' - Ground is a good thing
	\|-		\|-
	\|style="background:#fff"\|4. VDD - Power - 3.3V will do		\|style="background:#fff"\|4. '''VDD''' - Power - 3.3V will do
	\|-		\|-
	\|style="background:#fff"\|5. CLK - The clock we generate for the SD card		\|style="background:#fff"\|5. '''CLK''' - The clock we generate for the SD card
	\|-		\|-
	\|style="background:#fff"\|6. VSS2 - Another ground is also a good thing		\|style="background:#fff"\|6. '''VSS2''' - Another ground is also a good thing
	\|-		\|-
	\|style="background:#fff"\|7. DO - Data out from the SD card		\|style="background:#fff"\|7. '''DO''' - Data out from the SD card
	\|}		\|}

Line 82:		Line 82:
	!style="background:#fff"\|Secure Digital - miniSD card		!style="background:#fff"\|Secure Digital - miniSD card
	\|-		\|-
	\|style="background:#fff"\|1. CS - Chip Select		\|style="background:#fff"\|1. '''CS''' - Chip Select
	\|-		\|-
	\|style="background:#fff"\|2. DI - Data in		\|style="background:#fff"\|2. '''DI''' - Data in
	\|-		\|-
	\|style="background:#fff"\|3. VSS - Ground		\|style="background:#fff"\|3. '''VSS''' - Ground
	\|-		\|-
	\|style="background:#fff"\|4. VDD - 3.3V		\|style="background:#fff"\|4. '''VDD''' - 3.3V
	\|-		\|-
	\|style="background:#fff"\|5. CLK - Clock		\|style="background:#fff"\|5. '''CLK''' - Clock
	\|-		\|-
	\|style="background:#fff"\|6. VSS2 - Ground		\|style="background:#fff"\|6. '''VSS2''' - Ground
	\|-		\|-
	\|style="background:#fff"\|7. DO - Data out		\|style="background:#fff"\|7. '''DO''' - Data out
	\|-		\|-
	\|style="background:#fff"\|8-11. DO/RSV - Not used		\|style="background:#fff"\|8-11. DO/RSV - Not used
Line 106:		Line 106:
	\|style="background:#fff"\|1. RSV - Not used		\|style="background:#fff"\|1. RSV - Not used
	\|-		\|-
	\|style="background:#fff"\|2. CS - Chip Select		\|style="background:#fff"\|2. '''CS''' - Chip Select
	\|-		\|-
	\|style="background:#fff"\|3. DI - Data in		\|style="background:#fff"\|3. '''DI''' - Data in
	\|-		\|-
	\|style="background:#fff"\|4. VDD - 3.3V		\|style="background:#fff"\|4. '''VDD''' - 3.3V
	\|-		\|-
	\|style="background:#fff"\|5. CLK - Clock		\|style="background:#fff"\|5. '''CLK''' - Clock
	\|-		\|-
	\|style="background:#fff"\|6. VSS - Ground		\|style="background:#fff"\|6. '''VSS''' - Ground
	\|-		\|-
	\|style="background:#fff"\|7. DO - Data out		\|style="background:#fff"\|7. '''DO''' - Data out
	\|-		\|-
	\|style="background:#fff"\|8. RSV - Not used		\|style="background:#fff"\|8. RSV - Not used

Ivc: /* Move filesystem */

2008-06-09T01:18:18Z

Move filesystem

← Older revision		Revision as of 01:18, 9 June 2008
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	}		}
	exec /bin/busybox init		exec /bin/busybox init

			To install the new init script, do the following:

	# Save the script above as <tt>/tmp/init</tt>		# Save the script above as <tt>/tmp/init</tt>

Ivc: /* Soldering SD card */

2008-06-09T01:16:31Z

Soldering SD card

← Older revision		Revision as of 01:16, 9 June 2008
Line 140:		Line 140:

	A microSD-to-SD adapter is also normally included to make it easier to read in a standard card reader, same goes for the miniSD card.		A microSD-to-SD adapter is also normally included to make it easier to read in a standard card reader, same goes for the miniSD card.

			For power and ground I used the closes to the GPIO points I could find. But there are easier spots to solder, like the serial port; 3.3V is on pin 1 and pin2 and ground on pin 9 and pin 10.

	[[Image: Wrt54gl sdcard points.jpg\|400px]] [[Image: Wrt54gl sdcard points side.jpg\|400px]]		[[Image: Wrt54gl sdcard points.jpg\|400px]] [[Image: Wrt54gl sdcard points side.jpg\|400px]]

Ivc: /* Soldering SD card */

2008-06-09T01:13:17Z

Soldering SD card

← Older revision		Revision as of 01:13, 9 June 2008
Line 137:		Line 137:
	== Soldering SD card ==		== Soldering SD card ==

	I decided to test a Apacer AP1GMCSD-R 88x 1 GB microSD card instead of a full blown regular SD card. The microSD interface is identical to its parent with the lack of the second VSS2 ground point (design for sleep function). A microSD-to-SD adapter is normally included to make it easier to read ~~via~~ a standard card reader, same goes for the miniSD card.		I decided to test a Apacer AP1GMCSD-R 88x 1 GB microSD card instead of a full blown regular SD card. The microSD interface is identical to its parent with the lack of the second VSS2 ground point (design for sleep function).

			A microSD-to-SD adapter is also normally included to make it easier to read in a standard card reader, same goes for the miniSD card.

	[[Image: Wrt54gl sdcard points.jpg\|400px]] [[Image: Wrt54gl sdcard points side.jpg\|400px]]		[[Image: Wrt54gl sdcard points.jpg\|400px]] [[Image: Wrt54gl sdcard points side.jpg\|400px]]

Ivc at 01:10, 9 June 2008

2008-06-09T01:10:12Z

← Older revision		Revision as of 01:10, 9 June 2008
Line 263:		Line 263:

	* Read&write: 3min 37sec, averaging '''117 KB/s'''		* Read&write: 3min 37sec, averaging '''117 KB/s'''

			[[Image: Wrt54gl sdcard overview.jpg\|400px]]

	== References ==		== References ==

Ivc: /* Pin layout */

2008-06-09T01:03:07Z

Pin layout

← Older revision		Revision as of 01:03, 9 June 2008
Line 77:		Line 77:
	\|}		\|}

	{\| border="0" cellpadding="2" cellspacing="1" style="background:#ccc; float:left; margin:10px"		{\| border="0" cellpadding="2" cellspacing="1" width="300" style="background:#ccc; float:left; margin:10px"
	\|-		\|-
	\|style="background:#fff" rowspan="9"\|[[Image: miniSD secure digital card pinout.gif]]		\|style="background:#fff" rowspan="9"\|[[Image: miniSD secure digital card pinout.gif]]
Line 99:		Line 99:
	\|}		\|}

	{\| border="0" cellpadding="2" cellspacing="1" style="background:#ccc; float:left; margin:10px"		{\| border="0" cellpadding="2" cellspacing="1" width="300" style="background:#ccc; float:left; margin:10px"
	\|-		\|-
	\|style="background:#fff" rowspan="9"\|[[Image: microSD secure digital card pinout.gif]]		\|style="background:#fff" rowspan="9"\|[[Image: microSD secure digital card pinout.gif]]

Ivc: /* Pin layout */

2008-06-09T01:02:30Z

Pin layout

@@ Line 6: / Line 6: @@
 MMC/SD cards has a SPI interface making it easy to connect to the router through the GPIO lines. There are 4 connections; CS, DI, DO and CLK. In addition to 3.3V and Ground.
 {| border="0" cellpadding="2" cellspacing="1" style="background:#ccc; float:left; margin:10px"
@@ Line 69: / Line 119: @@
 |-
 |style="background:#fff"|8. RSV - Not used
 |}

Ivc: /* Pin layout */

2008-06-09T01:02:01Z

Pin layout

@@ Line 6: / Line 6: @@
 MMC/SD cards has a SPI interface making it easy to connect to the router through the GPIO lines. There are 4 connections; CS, DI, DO and CLK. In addition to 3.3V and Ground.
 {| border="0" cellpadding="2" cellspacing="1" style="background:#ccc; float:left; margin:10px"
@@ Line 117: / Line 69: @@
 |-
 |style="background:#fff"|8. RSV - Not used
 |}