Can I use a C shell script for my PLC stuff?

I appear to be stuck again.I have no problem preprocessing my code to a .c file.When I attemp to run comp --install I get the following:


jr1050@jr1050-desktop:/usr/realtime-2.6.32-122-rtai/modules/emc2$ sudo comp --install buttonlogic.c
make -C /usr/src/linux-headers-2.6.32-122-rtai SUBDIRS=`pwd` CC=gcc V=0 -o /Module.symvers modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.32-122-rtai'
CC [M] /tmp/tmp9VDHL7/buttonlogic.o
buttonlogic.comp: In function ‘_’:
buttonlogic.comp:101: error: invalid storage class for function ‘get_data_size’
buttonlogic.comp:101: warning: ISO C90 forbids mixed declarations and code
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
buttonlogic.comp:101: error: expected declaration or statement at end of input
make[2]: *** [/tmp/tmp9VDHL7/buttonlogic.o] Error 1
make[1]: *** [_module_/tmp/tmp9VDHL7] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-122-rtai'
make: *** [modules] Error 2

Thisi appears to be a an error in the .c file that the pre processor ran.I attahced the .c file any suggestions?Thanks....its late.

Hi

Your curly brackets are all over the place, most of them are not needed and some are before conditional if() statements which is wrong

If you use the indenting style in the attached amended version, it is much easier to match them up correctly.
It now compiles fine on my system with comp --compile buttonlogic.c

comp processes the .comp file and outputs a C file, but it does not test it at all, so you don't get C errors until you run it through gcc.

regards

Thank for your help!!!As I said,this is my first go at full blown C programming.Might as well jump in with both feet,no pain no gain!!With all of that being said,I have a few questions concerning the passing of values through the pins and the names that can be used in a comp file.

This is a piece of my hal file.It works.The button changes state when pushed.

net PB_CYL_START hm2_5i20.0.gpio.049.in_not

I have also assigned the modes of operation to the following names

net AUTO_MODE halui.mode.is-auto
net MDI_MODE halui.mode.is-mdi
net MAN_MODE halui.mode.is-manual
net PROG_RUN_OK halui.program.run
net PROG_RESUME halui.program.resume
net FEED_HOLD halui.program.pause


In the declaretion section of my first comp file(which at this time is named buttonlogic.comp)which is the logic for that pushbutton,I have this..

pin in bit PB_CYL_START;

And in the same file I am attempting to use the bit like so

if(((PB_CYL_START)==1)&&((AUTO_MODE)==1||(MDI_MODE)==1))
RUN_PROGRAM=1;

I have seen some example comp files that attached an extra name at the end of the pin in a fashion like this.

net PB_CYL_START hm2_5i20.0.gpio.049.in_not=pbclystart.buttonlogic

Can I use the original name that is in my hal file ,that is actually attached to the physical pins as I already have or must I follow the convention above and add a second name for the comp file.I plan on elimenateing all the uppercase and underscores.Would I be correct in guessing if the second name is needed it must be followed by .name of the comp file?Thanks again.

Thank you again for your help and quick response.I didnt mean to confuse you(or anyone else for that matter).There are no C statements in my hal file,and no net commands in my comp file.Im learning the syntax of C as I go from a couple of books and various web sites,trial by fire.There are missing pieces(or just plain hard to find) in the manual.
Id say the manual needs a section that says "pin in bit blah_blah" will create a signal(name?) in your .comp file called "0.blah_blah' and to make this name actually do something it has to be tied to a real pin(name,signal?) like so ,net but_blah mycompfileblah.0.blah_blah=hm2_5i20.gpio.049.in_not in your .hal file.

Again,a huge thanks for your help,hopefully I understand this correctly,Im sure Ill have a few more before its all over...

After a couple days of playing with comp.I can get my files to install/compile,but I get this

jr1050@jr1050-desktop:/usr/realtime-2.6.32-122-rtai/modules/emc2$ sudo comp --install coolant.comp
[sudo] password for jr1050:
make -C /usr/src/linux-headers-2.6.32-122-rtai SUBDIRS=`pwd` CC=gcc V=0 -o /Module.symvers modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.32-122-rtai'
CC [M] /tmp/tmp0lP5aI/coolant.o
Building modules, stage 2.
MODPOST 1 modules
WARNING: "hal_init" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "rtapi_print_msg" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "hal_exit" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "hal_export_funct" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "hal_malloc" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "hal_pin_bit_newf" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "rtapi_snprintf" [/tmp/tmp0lP5aI/coolant.ko] undefined!
WARNING: "hal_ready" [/tmp/tmp0lP5aI/coolant.ko] undefined!
CC /tmp/tmp0lP5aI/coolant.mod.o
LD [M] /tmp/tmp0lP5aI/coolant.ko
make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-122-rtai'
cp coolant.ko /usr/realtime-2.6.32-122-rtai/modules/emc2/


I do have a coolant .ko file and the pins show in hal show.My inputs show change of state(when the coolant button is pushed,coolant.0.pb_cool_on go high),but I have no change to my output bit,so consequently, have actual output to the machine.

Below is the small file i am trying to run
component coolant;


pin in bit pb_cool_on;


pin out bit cl_idod_clnt;


variable bool run_program;
variable bool cs_coolant_on;
variable bool cs_coolant_off;
variable bool collet_clsd;
variable bool collet_opn;

function _ nofp;
license "gpl";
;;



FUNCTION(_)
{


//coolant on button///

if((pb_cool_on)==1)
{
cl_idod_clnt=1;
cs_coolant_on=1;
}
}

Here is my hal file.



are the errors that are showing up at install time causing my output not to function or am I missing something else?Thanks as always...