RS232/GPIO Shield for Raspberry Pi - Revision history

Qian.zhang at 01:10, 6 January 2015

2015-01-06T01:10:52Z

2014-11-20T03:33:30Z

2014-04-16T02:34:47Z

2014-02-20T09:36:49Z

2013-11-08T02:46:51Z

2013-07-11T12:29:43Z

‎Tutorial

2013-07-11T12:29:03Z

2013-07-11T12:26:02Z

2013-07-11T12:24:01Z

2013-07-11T12:15:09Z

Created page with " File:RPI UART.png"

New page

[[File:RPI UART.png]]

@@ Line 1: / Line 1: @@
-==Introduction==
+== Introduction ==
 This is a shield to add a RS232 level shift to the UART of Raspberry Pi. Moreover, it also breakout the rest headers for easy access.
@@ Line 5: / Line 5: @@
 [[File:RS323 for Rpi.jpg]]
-==Tutorial==
+== Schematics ==
+== Usage ==
 The UART on Raspberry Pi is on P1 and shown below:
 [[File:RPI UART.png]]
 The UART is /dev/ttyAMAO,  it defaults to output system log.  But if user wants to use this UART to connect to other modules through UART, for example, GPS module, we need to change the configuration.
@@ Line 45: / Line 42: @@
 Save the changes, and reboot. We will get an UART with baud rate of 115200.
-== Schematics ==
+== Resources ==
-*[https://s3.amazonaws.com/linksprite/Shields/RS232_RPI/RS232_GPIO_shield.pdf Schematics ]
-==How to buy==
+== How to buy ==
 Here to buy RS232/GPIO Shield for Raspberry Pi [http://store.linksprite.com/rs232-gpio-shield-for-raspberry-pi/ store]

@@ Line 3: / Line 3: @@
 This is a shield to add a RS232 level shift to the UART of Raspberry Pi. Moreover, it also breakout the rest headers for easy access.
- [[File:RS323 for Rpi.jpg]]
+[[File:RS323 for Rpi.jpg]]
 ==Tutorial==

@@ Line 1: / Line 1: @@
-[[File:RPI RS232 1.jpg | 400px]]
+==Introduction==
 This is a shield to add a RS232 level shift to the UART of Raspberry Pi. Moreover, it also breakout the rest headers for easy access.
+  [[File:RS323 for Rpi.jpg]]
 ==Tutorial==

← Older revision		Revision as of 09:36, 20 February 2014
Line 49:		Line 49:
	== Schematics ==		== Schematics ==
	*[https://s3.amazonaws.com/linksprite/Shields/RS232_RPI/RS232_GPIO_shield.pdf Schematics ]		*[https://s3.amazonaws.com/linksprite/Shields/RS232_RPI/RS232_GPIO_shield.pdf Schematics ]
		+
		+	==How to buy==
		+	Here to buy RS232/GPIO Shield for Raspberry Pi [http://store.linksprite.com/rs232-gpio-shield-for-raspberry-pi/ store]

← Older revision		Revision as of 02:46, 8 November 2013
Line 46:		Line 46:

	Save the changes, and reboot. We will get an UART with baud rate of 115200.		Save the changes, and reboot. We will get an UART with baud rate of 115200.
		+
		+	== Schematics ==
		+	*[https://s3.amazonaws.com/linksprite/Shields/RS232_RPI/RS232_GPIO_shield.pdf Schematics ]

← Older revision		Revision as of 12:29, 11 July 2013
Line 17:		Line 17:

	[[File:RPI UART.png]]		[[File:RPI UART.png]]
		+
		+
		+	The UART is /dev/ttyAMAO, it defaults to output system log. But if user wants to use this UART to connect to other modules through UART, for example, GPS module, we need to change the configuration.
		+
		+	The detailed steps are as following:
		+
		+	We need to modify two files: /boot/cmdline.txt and /etc/inittab.
		+
		+	Modify /boot/cmdline.txt:
		+
		+	Replace the original content:
		+
		+	dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
		+
		+	With:
		+
		+	dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
		+
		+
		+	Modify /etc/inittab:
		+
		+	Comment out the last line of /etc/inittab. To comment out, it simply addess a '#'.
		+
		+
		+
		+	$ sudo vi /etc/inittab
		+	#T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100
		+
		+	Save the changes, and reboot. We will get an UART with baud rate of 115200.

← Older revision		Revision as of 12:29, 11 July 2013
Line 1:		Line 1:
	[[File:RPI RS232 1.jpg \| 400px]]		[[File:RPI RS232 1.jpg \| 400px]]
		+
		+	==Description==
		+
		+	This is a shield to add a RS232 level shift to the UART of Raspberry Pi. Moreover, it also breakout the rest headers for easy access.
		+
		+
		+
		+	==Tutorial==
		+
		+
		+
		+	The UART on Raspberry Pi is on P1 and shown below:
		+
		+
		+

	[[File:RPI UART.png]]		[[File:RPI UART.png]]