AS1531 - Revision history

JulienB at 18:13, 12 February 2013

2013-02-12T18:13:54Z

← Older revision		Revision as of 20:13, 12 February 2013
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	[[Category:Linux drivers]]		[[Category:Linux drivers]]
	[[Category:Analog to Digital Converter]]		[[Category:Analog to Digital Converter]]

			==Examples==
			* Script to read all values each 500ms and display them on console:
			<source lang="bash">
			#!/bin/sh

			modprobe as1531

			loop=1
			while [ "$loop" == 1 ]; do
			for i in 0 1 2 3 4 5 6 7; do
			value=`cat /sys/bus/spi/devices/spi0.0/in"$i"_input`
			echo -n "$value "
			done
			usleep 500000 # 500ms
			echo
			done
			</source>

2013-02-12T13:04:57Z

Read channels value

← Older revision		Revision as of 15:04, 12 February 2013
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	To read adc value just «cat» an input :		To read adc value just «cat» an input :
	<pre class="apf">		<pre class="apf">
	# cat in5_input		# cat in5_input
	887		887
	</pre>		</pre>

2013-02-12T13:03:45Z

Connecting chip on APF boards

← Older revision		Revision as of 15:03, 12 February 2013
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	== Connecting chip on APF boards ==		== Connecting chip on APF boards ==

	On the [[APF51Dev]], the AS1531 is connected to the SPI1 bus by default, so you can move to next chapter.		* On the [[APF51Dev]], the AS1531 is connected to the SPI1 bus by default, so you can move to [[AS1531#Use_it\|next chapter]].
			* On the [[APF27Dev]] board it can be soldered on SPI3 bus, which is available on connector J8.
	On the [[APF27Dev]] board it can be soldered on SPI3 bus, which is available on connector J8.

	{\| class="wikitable" style="text-align:center; width:50%;"		{\| class="wikitable" style="text-align:center; width:50%;"

2013-02-12T13:02:34Z

Driver

← Older revision		Revision as of 15:02, 12 February 2013
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	== Driver ==		== Driver ==
	Driver is by default included if you choose an [[APF51]] as target.		* Driver is by default included if you choose an [[APF51]] as target.
			* Otherwise, you can select it that way:
	Otherwise, you can select it that way:

	<pre class="host">		<pre class="host">
	~~[ ]~~ $ make ~~linux26~~-menuconfig		$ make linux-menuconfig
	</pre>		</pre>

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	</pre>		</pre>

	Then ~~compile~~ the ~~distribution~~ :		* Then rebuild the Linux and rootfs images:
	<pre class="host">		<pre class="host">
	~~[ ]~~ $ make ~~linux26~~ && make		$ make linux && make
	</pre>		</pre>

2013-02-12T13:01:31Z

Introduction

← Older revision		Revision as of 15:01, 12 February 2013
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	== Introduction ==		== Introduction ==

	AS1531 is a 12bits 8 channels Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. Its use a SPI bus to communicate with a master microprocessor. ~~The~~ driver is included in ~~ARMadeus distribution~~ and can be used ~~with~~ the APF51Dev board.		AS1531 is a 12bits 8 channels Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. Its use a SPI bus to communicate with a master microprocessor. A driver is included in the Armadeus BSP/SDK and can be used on the APF51Dev board.

	== Connecting chip on APF boards ==		== Connecting chip on APF boards ==

2011-10-07T14:23:14Z

← Older revision		Revision as of 16:23, 7 October 2011
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	== Introduction ==		== Introduction ==

	AS1531 is a 8 channels ~~12bits~~ Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. The driver is included in ARMadeus distribution and can be used with the APF51Dev board.		AS1531 is a 12bits 8 channels Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. Its use a SPI bus to communicate with a master microprocessor. The driver is included in ARMadeus distribution and can be used with the APF51Dev board.

	== Connecting chip on APF boards ==		== Connecting chip on APF boards ==

	AS1531 ~~chip use a SPI bus~~ to ~~communicate with~~ the ~~microprocessor~~, ~~then to use it on APFx board it must be connected~~ to ~~a SPI bus~~.		On the [[APF51Dev]], the AS1531 is connected to the SPI1 bus by default, so you can move to next chapter.

	On the ~~APF51Dev, the AS1531 is connected to the SPI1 bus by default, so you can move to next chapter.~~		On the [[APF27Dev]] board it can be soldered on SPI3 bus, which is available on connector J8.

	~~On the APF27-Dev~~ board it can be soldered on SPI3 bus, which is ~~availbale~~ on connector J8.

	{\| class="wikitable" style="text-align:center; width:50%;"		{\| class="wikitable" style="text-align:center; width:50%;"

2011-10-07T14:19:36Z

Soldering

← Older revision		Revision as of 16:19, 7 October 2011
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	AS1531 is a 8 channels 12bits Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. The driver is included in ARMadeus distribution and can be used with the APF51Dev board.		AS1531 is a 8 channels 12bits Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. The driver is included in ARMadeus distribution and can be used with the APF51Dev board.

	== ~~Soldering~~ ==		== Connecting chip on APF boards ==

	AS1531 chip use a SPI bus to communicate with the microprocessor, then to use it on APFx board it must be connected to a SPI bus.		AS1531 chip use a SPI bus to communicate with the microprocessor, then to use it on APFx board it must be connected to a SPI bus.

2011-10-07T14:17:56Z

read values

2011-10-07T14:16:59Z

modprobe

← Older revision		Revision as of 16:16, 7 October 2011
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	{{Warning\|AS1531 is used with internal reference voltage of 2,5V, so DO NOT TRY to acquire signals with greater voltage range.}}		{{Warning\|AS1531 is used with internal reference voltage of 2,5V, so DO NOT TRY to acquire signals with greater voltage range.}}

	=== ~~modprobe~~ ===		=== Load driver ===
	To use the ~~ADC~~, first load ~~hwmon and~~ as1531 ~~modules~~:		To use the AS1531, first load ''as1531'' module:

	<pre class="apf">		<pre class="apf">
	~~# modprobe hwmon~~
	# modprobe as1531		# modprobe as1531
	</pre>		</pre>

2011-10-07T14:14:33Z

Introduction

← Older revision		Revision as of 16:14, 7 October 2011
Line 1:		Line 1:
	== Introduction ==		== Introduction ==

	AS1531 is a 8 channels 12bits ~~analog do digital converter~~ made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. The driver is included in ARMadeus distribution and can be used with the APF51Dev board.		AS1531 is a 8 channels 12bits Analog to Digital Converter made by [http://www.austriamicrosystems.com/ Austriamicrosystem]. The driver is included in ARMadeus distribution and can be used with the APF51Dev board.

	== Soldering ==		== Soldering ==