ADC, Sitara, Touch screen. This page has been accessed 36, times. These four analogue inputs are compatible within the Colibri family and are dedicated ADC inputs. On BeagleBone platform, P9 expansion header can be used. Platform driver mapping The ADC drivers are located at:

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An analog-to-digital converter abbreviated ADC is a device that uses sampling to convert a continuous quantity to a discrete time representation in digital form. Application takes buffer length to use in this example and the number of iterations you want to run 3 in this example. For BSP versions 2.

The inputs are 0 indexed, so the usable inputs are When the user wants to continuously take samples, continuous mode needs to be enabled. Enable the channels indexes that you want to enable by using the adc-ch-list property for i.

Linux source code: drivers/iio/adc/vf_adc.c (v) – Bootlin

About us Contact us Support. The ADC function of these pins are not compatible with other Colibri modules. For technical support please post your questions at http: We created a test program to show how the driver can umx used, see adc-test. Both ADC controllers are bit resolution, right justified, unsigned format. Ix should be noted, that the noise level on these pins might be higher than on the dedicated ADC input signals, as these are routed as digital signals on the module.


By just enabling the buffer ADC switches to continuous mode. Retrieved from ” http: Open topic with navigation.

To determine which entry corresponds to which driver read the name descriptor with:. Currently only AD0 and AD1 are supported.

Analog-to-Digital Converter (ADC)

The generic buffer code present in Linux kernel source tree can be used to test the continuous sampling functionality. It captures the signal at the end of sampling period and starts conversion. Views Read View source View history. Please note that the ADC output is positive binary weighted data.

You can find the source code for ADC here. The device tree must contain entries for: For further information of J8 connector layout please refer to EVM schematics here.

IMX.6UL ADC example program

You will only need to specify the IIO driver. Kernel configuration You can manage the i. The ADC samples the analog signal when “start of conversion” signal is high and continues sampling 1 clock cycle after the falling edge.


Please note as of Wednesday, August 15th, this wiki has been set to read only. The ADC peripherals also include an internal temperature sensor.

Analog-to-Digital Converter (ADC)

To determine which entry corresponds to which driver read the name descriptor with: These options are enabled as built-in on the default ConnectCore 6UL kernel configuration file.

This page has been accessed 36, times.

If you are a TI Employee and require Edit ability please contact x from the company directory. To learn the syntax of the application run: A new conversion cycle can be initiated after the previous data is read.

The STMPE supports up to 8 analogue inputs, however, input are used for the resistive touchscreen interface. Digi Embedded Yocto version 2.