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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9
Marlin/cardreader.h
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@ -18,7 +18,7 @@ public:
//this is to delay autostart and hence the initialisaiton of the sd card to some seconds after the normal init, so the device is available quick after a reset
void checkautostart(bool x);
void openFile(char* name,bool read);
void openFile(char* name,bool read,bool replace_current=true);
void openLogFile(char* name);
void removeFile(char* name);
void closefile();
@ -31,6 +31,8 @@ public:
void getfilename(const uint8_t nr);
uint16_t getnrfilenames();
void getAbsFilename(char *t);
void ls();
void chdir(const char * relpath);
@ -60,6 +62,11 @@ private:
Sd2Card card;
SdVolume volume;
SdFile file;
#define SD_PROCEDURE_DEPTH 1
#define MAXPATHNAMELENGTH (13*MAX_DIR_DEPTH+MAX_DIR_DEPTH+1)
uint8_t file_subcall_ctr;
uint32_t filespos[SD_PROCEDURE_DEPTH];
char filenames[SD_PROCEDURE_DEPTH][MAXPATHNAMELENGTH];
uint32_t filesize;
//int16_t n;
unsigned long autostart_atmillis;