Beginners guide to SPI on Raspberry Pi - Revision history

Cartridge1987: /* Troubleshooting */

2015-11-05T16:20:20Z

Troubleshooting

2015-09-16T14:42:23Z

Next steps

2015-09-16T14:39:47Z

Troubleshooting

2015-09-16T14:36:46Z

Troubleshooting

2014-07-21T12:09:16Z

Next steps

2014-07-16T15:48:07Z

Next steps

2014-07-14T15:49:40Z

Next steps

2014-07-14T15:49:07Z

Installing the program

2014-07-07T15:22:39Z

2012-08-24T10:23:18Z

← Older revision		Revision as of 16:20, 5 November 2015
Line 109:		Line 109:
	= Troubleshooting =		= Troubleshooting =

	If you have any problems, please let us know, and we will do our best to help you resolve them. You can [http://www.bitwizard.nl/contact.php contact] us, or post your problem in our [http://forum.bitwizard.nl/ forum.] We will respond as soon as we can.		If you have any problems, please let us know, and we will do our best to help you resolve them. You can [http://www.bitwizard.nl/contact.php contact us], or post your problem in our [http://forum.bitwizard.nl/ forum.] We will respond as soon as we can.

@@ Line 99: / Line 99: @@
  sudo bw_tool -a <address of the board> -r <register> -v <value>
 Let's try this with a SPI_LCD, by clearing the screen. The display is at address 82, the register is 0x10, and the value doesn't matter. Caveat: The address should be given in hex, but the register and value in decimal.
- sudo bw_tool -a 82 -w 16:0
+ sudo bw_tool -a 82 -w 10:0
 Now your display should be cleared. <br>
 See also the [[bw_tool| bw_tool  wiki page ]].

← Older revision		Revision as of 14:39, 16 September 2015
Line 109:		Line 109:
	= Troubleshooting =		= Troubleshooting =

	If you have any problems, please let us know, and we will do our best to help you resolve them. You can [http://www.bitwizard.nl/contact.php contact] us, or post your problem in our forum. We will respond as soon as we can.		If you have any problems, please let us know, and we will do our best to help you resolve them. You can [http://www.bitwizard.nl/contact.php contact] us, or post your problem in our [http://forum.bitwizard.nl/ forum.] We will respond as soon as we can.

← Older revision		Revision as of 14:36, 16 September 2015
Line 109:		Line 109:
	= Troubleshooting =		= Troubleshooting =

	If you have any problems, please let us know, and we will do our best to help you resolve them. You can ~~email~~ us, or post your problem in our forum. We will respond as soon as we can.		If you have any problems, please let us know, and we will do our best to help you resolve them. You can [http://www.bitwizard.nl/contact.php contact] us, or post your problem in our forum. We will respond as soon as we can.

@@ Line 99: / Line 99: @@
  sudo bw_tool -a <address of the board> -r <register> -v <value>
 Let's try this with a SPI_LCD, by clearing the screen. The display is at address 82, the register is 0x10, and the value doesn't matter. Caveat: The address should be given in hex, but the register and value in decimal.
- sudo bw_tool -a 82 -r 16 -v 0
+ sudo bw_tool -a 82 -w 16:0
 Now your display should be cleared. <br>
 See also the [[bw_tool| bw_tool  wiki page ]].

@@ Line 96: / Line 96: @@
 = Next steps =
-The bw_lcd program can also be used to control all of our other SPI boards, using the -a, -r, and -v switches.
+The bw_tool program can also be used to control all of our other SPI boards, using the -a, -r, and -v switches.
  sudo bw_tool -a <address of the board> -r <register> -v <value>
 Let's try this with a SPI_LCD, by clearing the screen. The display is at address 82, the register is 0x10, and the value doesn't matter. Caveat: The address should be given in hex, but the register and value in decimal.

@@ Line 89: / Line 89: @@
  sudo bw_tool -a 94  -t 'Hello World!'
 In case of I2C (check display when unsure):
- sudo bw_tool -a 94 -I  -t 'Hello World!'
+ sudo bw_tool -a 94 -I -D /dev/i2c-1 -t 'Hello World!'
 If you did everything right, you now have "Hello world!" displayed on your LCD. Have a look at the [[Bw tool| the wiki page of bw_tool]], or the  [https://github.com/rewolff/bw_rpi_tools/blob/master/bw_tool/bw_tool.c source of bw_tool].
+(For users of the "rev 1" model B, you need i2c-0 instead of i2c-1. )
 = Next steps =

@@ Line 1: / Line 1: @@
 = Introduction =
-In this guide, I will show you how to get SPI up and running on a Raspberry Pi, and how to control a SPI_LCD module. We will start from scratch, with a blank SD card.
+In this guide, I will show you how to get SPI up and running on a Raspberry Pi, and how to control a SPI_LCD module. We will start from scratch, with a blank SD card. The instructions are written for a Linux system, but most instructions also apply for Windows systems.
 = Things we will be using =