bissen21/Marlin_Firmware
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Sub-file calls.

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by overloading M32 it is now possible to execute gcode files from other gcode files, with a fixed recursion level.
This can be used e.g. for having a real start.g and end.g somewhere on the sd card, which are then called from the normal print file.
Another usecase would be to have macro-files for nozzle-change and layerchange.
I have not tested the speedwise performance. The testing was done with pronterface.

syntax:
normal call from sd card will open the new file and continue executing there.
M32 !/path/filename#
this however will call the new file and return to the caller file.
M32 P !/path/filename#
with the optional "S<position>" the  file starting position can be set.
this is for continuing prints from a previous location.
This commit is contained in:
bkubicek
2013-10-22 10:02:18 +02:00
parent b2cc27e5ea
commit ab965376ff
3 changed files with 121 additions and 20 deletions
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43
Marlin/Marlin_main.cpp
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@ -90,7 +90,10 @@
// M29 - Stop SD write
// M30 - Delete file from SD (M30 filename.g)
// M31 - Output time since last M109 or SD card start to serial
// M32 - Select file and start SD print (Can be used when printing from SD card)
// M32 - Select file and start SD print (Can be used _while_ printing from SD card files):
// syntax "M32 /path/filename#", or "M32 S<startpos bytes> !filename#"
// Call gcode file : "M32 P !filename#" and return to caller file after finishing (simiarl to #include).
// The '#' is necessary when calling from within sd files, as it stops buffer prereading
// M42 - Change pin status via gcode Use M42 Px Sy to set pin x to value y, when omitting Px the onboard led will be used.
// M80 - Turn on Power Supply
// M81 - Turn off Power Supply
@ -1467,19 +1470,41 @@ void process_commands()
card.removeFile(strchr_pointer + 4);
}
break;
case 32: //M32 - Select file and start SD print
case 32: //M32 - Select file and start SD print
{
if(card.sdprinting) {
st_synchronize();
card.closefile();
card.sdprinting = false;
}
starpos = (strchr(strchr_pointer + 4,'*'));
starpos = (strchr(strchr_pointer + 4,'*'));
char* namestartpos = (strchr(strchr_pointer + 4,'!')); //find ! to indicate filename string start.
if(namestartpos==NULL)
{
namestartpos=strchr_pointer + 4; //default name position, 4 letters after the M
}
else
namestartpos++; //to skip the '!'
if(starpos!=NULL)
*(starpos-1)='\0';
card.openFile(strchr_pointer + 4,true);
card.startFileprint();
starttime=millis();
break;
bool call_procedure=(code_seen('P'));
if(strchr_pointer>namestartpos)
call_procedure=false; //false alert, 'P' found within filename
if( card.cardOK )
{
card.openFile(namestartpos,true,!call_procedure);
if(code_seen('S'))
if(strchr_pointer<namestartpos) //only if "S" is occuring _before_ the filename
card.setIndex(code_value_long());
card.startFileprint();
if(!call_procedure)
starttime=millis(); //procedure calls count as normal print time.
}
} break;
case 928: //M928 - Start SD write
starpos = (strchr(strchr_pointer + 5,'*'));
if(starpos != NULL){