In this way the max sample resolution we obtain is about 3. Every bit is a boolean to use or not the corresponding channel. Setup Get the Linux kernel The driver has been included in the Linux kernel 3. Of course, if you set it to false here, all the triggers relying on this pin won’t be available to the driver. You can have a look at this documentation inline: With device tree, name of the device may change to some form like “fc
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So using the setup above, we have the following trace: How to set it up Basically, what you should do for launching the hardware triggers is: In either case, the conversion is started on rising edges. Read a single value from channel n Note: Atnel the Linux kernel image: On Sama5d3 Xplained board, I get timeout when I try to convert the channels.
Using ADC on AT91SAM9G20 based products |
We not provide any direct support for the Open Source software which can running on our board but, through these pages and forum posts, we provide all of the information required to obtain the sources, install, use and update the Open Source software available on Internet.
A description of configuring and compiling the linux kernel can be found in our linux guide. Please note that the setup of the timer counters in themselves is not achieved by this driver, so you will have to do it yourself. Reading this file should return you a weird looking string. Below is an example of how to use this tool: Connect to LinksToCommunities page.
For the G20, you have two types of hardware triggers, either timer counters are the trigger for the conversion, either an external pin is used to provide such an input.
Of course, if you set it to false here, all the triggers relying on this pin won’t wdc available to the driver.
To produce a kernel image suitable for U-Boot: Acme Systems srl provided this documentation “as is” without warranty or guarantees of any kind. In case of sharing please indicate the origin: You can have a look at this documentation inline: A stream of four channels at eight bit would look like:.
Are there additional software packages available for the ipCore basic firmware?
Please note that conversions are done one channel at a time. The behaviour of aec differs a bit when read back.
Linux Kernel Driver DataBase: CONFIG_AT91_ADC: Atmel AT91 ADC
If you need to read a higher signal use a schematic like this:. Data streaming Besides reading single values through the sysfs interface, the driver provides a data streaming mode what was the main intention of this work.
Insert this definition to enable the driver and the pin to use Acqua pinout:. Important folders in the xt91 Documentation for this Linux subsystem is available in the kernel source code directory: You can also specify the buffer length to use 2 in this example.
ADC Touch screen is disabled. The attached sample program test.