Re: How to Read Multiple Values using StreamDevice with array_in

[Yasemin Barutçu <barutcu.y@gmail.com>]

Hello Dirk,

I've done what you suggested. But I can't read passive records 2 values.

epics> 2013/10/21 11:16:51.892 192.168.1.198:9001 write 7
MEASC\r\n
2013/10/21 11:16:51.906 192.168.1.198:9001 read 8
025 026
2013/10/21 11:16:51.914 192.168.1.198:9001 read 8
027 025
2013/10/21 11:16:51.925 192.168.1.198:9001 read 7
025 026
2013/10/21 11:16:52.025445 thermoIPConn M:TEMP1: Timeout after reading 23 bytes "... 026 027 025 025 026"


[root@105 ipThermo]# caput M:TEMP1 1
Old : M:TEMP1                        0
New : M:TEMP1                        1
[root@105 ipThermo]# caget M:TEMP1
M:TEMP1                        26
[root@105 ipThermo]# caget M:TEMP2
M:TEMP2                        0
[root@105 ipThermo]# caget M:TEMP3
M:TEMP3                        0
[root@105 ipThermo]# caget M:TEMP4
M:TEMP4                        0
[root@105 ipThermo]# caget M:TEMP5
M:TEMP5                        0
[root@105 ipThermo]# caget M:TEMP6
M:TEMP6                        0

I defined DTYP as "Raw Soft Channel".

Yasemin

Hello Yasemin

On 07.10.2013 10:03, Yasemin Barutçu wrote:

Hello,

I have a self-produced thermocouple and I connect to this device by RS 232.
I want to read 6 different integers when I send "MEASC" command to the
device.

in thermo.proto file, if I define %s, I can read all data by stringin.

MEASC{
     out "MEASC";
     in "%s";
}

Example:
2013/10/07 10:59:53.633 192.168.1.198:9001 <http://192.168.1.198:9001>
write 6
MEASC\n
2013/10/07 10:59:53.647 192.168.1.198:9001 <http://192.168.1.198:9001>
read 8
029 030 029 028 028 028


But I want to take all 6 datas in integer format. I search the
streamdevice documentation and I found the following line.

There several possibilities to do this.

MEASC{
     out "MEASC";
     array_in {separator=" "; in "%d";}
}

But it doesn't work. I got the following error.

No that does not work. What you wanted to do is:
MEASC{
    separator=" ";
    out "MEASC";
    in "%d";
}

But then you get an array of 6 values. Maybe you want to have the 6 values in separate records. You can do this using redirected input:

MEASC{
    out "MEASC";

in "%d %(\1:TEMP2)d %(\1:TEMP3)d %(\1:TEMP4)d %(\1:TEMP5)d %(\1:TEMP6)d";

}

Called from a record like this:
record (ai, "$(P):TEMP1") {
    field (DTYP, "stream)
    field (INP,  "@thermo.proto MEASC($(P)) $(PORT)")
}

And 5 passive records like this:
record (ai, "$(P):TEMP2") {
}
record (ai, "$(P):TEMP3") {
}
record (ai, "$(P):TEMP4") {
}
record (ai, "$(P):TEMP5") {
}
record (ai, "$(P):TEMP5") {
}

Note that the 5 passive records have no "stream" support (in fact they use "Soft Channel" or if you wish you can use "Raw Soft Channel").

Dirk