95 lines
1.8 KiB
C
95 lines
1.8 KiB
C
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#include <stdio.h>
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#include <comedilib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <getopt.h>
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#include <ctype.h>
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#include <math.h>
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#include <sys/time.h>
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#include <string.h>
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int comedi_get_cmd_src_mask(comedi_t *it,unsigned int s,comedi_cmd *cmd)
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{
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memset(cmd,0,sizeof(*cmd));
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cmd->subdev = s;
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cmd->flags = 0;
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cmd->start_src = TRIG_ANY;
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cmd->scan_begin_src = TRIG_ANY;
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cmd->convert_src = TRIG_ANY;
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cmd->scan_end_src = TRIG_ANY;
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cmd->stop_src = TRIG_ANY;
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return comedi_command_test(it,cmd);
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}
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int comedi_get_cmd_generic_timed(comedi_t *it,unsigned int s,comedi_cmd *cmd)
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{
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int ret;
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ret = comedi_get_cmd_src_mask(it,s,cmd);
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if(ret<0)return ret;
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if(cmd->start_src&TRIG_NOW){
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cmd->start_src=TRIG_NOW;
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cmd->start_arg=0;
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}else if(cmd->start_src&TRIG_FOLLOW){
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cmd->start_src=TRIG_FOLLOW;
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cmd->start_arg=0;
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}else{
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/* hmmm... don't know what to do */
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return -1;
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}
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if(cmd->convert_src&TRIG_TIMER){
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if(cmd->scan_begin_src&TRIG_FOLLOW){
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cmd->convert_src = TRIG_TIMER;
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cmd->scan_begin_src = TRIG_FOLLOW;
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}else{
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cmd->convert_src = TRIG_TIMER;
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cmd->scan_begin_src = TRIG_TIMER;
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}
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}else if(cmd->convert_src & TRIG_NOW &&
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cmd->scan_begin_src & TRIG_TIMER)
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{
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cmd->convert_src = TRIG_NOW;
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cmd->scan_begin_src = TRIG_TIMER;
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}else{
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//printf("can't do timed?!?\n");
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return -1;
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}
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cmd->scan_end_src = TRIG_COUNT;
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cmd->scan_end_arg = 1;
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if(cmd->stop_src&TRIG_COUNT){
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cmd->stop_src=TRIG_COUNT;
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cmd->stop_arg=2;
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}else if(cmd->stop_src&TRIG_NONE){
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cmd->stop_src=TRIG_NONE;
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cmd->stop_arg=0;
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}else{
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printf("can't find a good stop_src\n");
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return -1;
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}
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cmd->chanlist_len = 1;
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ret=comedi_command_test(it,cmd);
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if(ret==3){
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/* good */
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ret=comedi_command_test(it,cmd);
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}
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if(ret==4 || ret==0){
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return 0;
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}
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return -1;
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}
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