fix INTTRIG insn

diff --git a/demo/ao_waveform.c b/demo/ao_waveform.c
index 09a17fc49bd63550e92bacd15f18c4d93dc093b9..6fcb30bcf47e861a0e0f003a4dcd605a87bd685b 100644 (file)
--- a/demo/ao_waveform.c
+++ b/demo/ao_waveform.c
@@ -93,6 +93,7 @@ int main(int argc, char *argv[])
        int total=0;
        comedi_t *dev;
        unsigned int chanlist[16];
+       lsampl_t insn_data = 0;
 
        parse_options(argc,argv);
 
@@ -147,7 +148,15 @@ int main(int argc, char *argv[])
        memset(&insn, 0, sizeof(comedi_insn));
        insn.insn = INSN_INTTRIG;
        insn.subdev = subdevice;
-       comedi_do_insn(dev, &insn);
+       insn.n = 1;
+       insn.data = &insn_data;
+       insn.data[ 0 ] = 0;
+       err = comedi_do_insn(dev, &insn);
+       if( err < 0 )
+       {
+               perror("comedi_do_insn()");
+               abort();
+       }
 
        while(1){
                dds_output(data,BUF_LEN);