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<== Date ==> <== Thread ==>

Subject: Re. installation of EPICS for beam position measurement using Raspberrypi
From: vivek singh <[email protected]>
To: [email protected]
Date: Wed, 10 Feb 2016 05:47:33 +0000
Hello,

I want to use EPICS in my raspberry pi for beam position measurement.  I will be using 4 16-bit ADC's for digitizing the output of the pickup electrodes. The ADC's support serial and parallel interfaces.  Since the Pi does not have that many GPIOs, I will be using Serial Interface to get the data.  I have a few questions regarding that.

1. The ADC (AD7622) supports 2MSPS.  I wrote a python code to toggle a GPIO pin on a loop after some calculations and the maximum switching frequency I could observe in the
    Oscilloscope was 500kHz.  Is that the maximum speed I can achieve using PI ?

2. The Pi has a dedicated SPI interface, so what is the maximum speed that can be achieved using it ?

Another query I had, was regarding multicore processing capability of the Pi.  

3. Is it possible to control individual cores, so that they can each perform one task that I assign to them, at their maximum capacity ?


Any other suggestions you have regarding this setup would be very helpful.


Thank You,



Replies:
Re: Re. installation of EPICS for beam position measurement using Raspberrypi Eric Norum
Re: Re. installation of EPICS for beam position measurement using Raspberrypi Eric Norum
Re: Re. installation of EPICS for beam position measurement using Raspberrypi Henrique Almeida

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