Re: UCHAR to BitArray conversion

[ishita bhatia <ishita3006@gmail.com>]

Hello,

I wan't the output i have recieved through waveform record i.e.  waf 4 50 66 64 51  in BINARY FORM( 1's and 0's) and this binary output should be in form of array.

Kindly suggest how to get such output. 

On Thu, Jun 25, 2015 at 5:13 PM, Mark Rivers <rivers@cars.uchicago.edu> wrote:

I am not sure what you mean by a "bitArray"?  In some sense your asyn record data is already a "bitArray": it is a series of sequential bits in memory.  By bitArray do you mean an array of CHAR, UCHAR, or INT32 in which each element of that array only holds a single bit?  If so what data type do you want the array values to be?

Taking a step back: what is your end-goal, why do you want the data in a bitArray?

Mark

________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of ishita bhatia [ishita3006@gmail.com]
Sent: Thursday, June 25, 2015 6:17 AM
To: Ralph Lange
Cc: EPICS Tech-Talk
Subject: Re: UCHAR to BitArray conversion

Hello,

How can i get output of mbbiDirect record in form of bitArray ? Is there any record available in VDCT to get such output.

To get understanding of mbbiDirect record i tried following:

I have taken a decimal value (for eg.4 ) in ai record. This value is given as input in mbbiDirect record (for eg. bits). Now when i run ioc, i give command

caget bits.B0
 I get output as 1 i.e. just one bit of 100(binary of 4). then when I run caget bits.B1, i get output 0...same caget bits.B1 gives 0.
but as this mbbiDirect gives bit by bit output, i wan't to get output in form of bitArray.

My main requirement is i am getting output from waveform record as waf 4 50 66 64 51(this is the output which i have got from VME using asyn record )which i wan't to convert in binary or bitArray form. So kindly suggest me how to do it without code or even if I create a device support how will i fetch this data (waf 4 50 66 64 5)from VDCT to device support to create the logic.