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Dynamic allocation for SDCARD_SORT_ALPHA

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This commit is contained in:
Scott Lahteine 2017-02-09 07:05:34 -06:00
parent a561bd5e3a
commit 47f9883b0f
20 changed files with 124 additions and 18 deletions
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2
Marlin/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

6
Marlin/SanityCheck.h
View file

@ -213,9 +213,13 @@
#error "SDSORT_LIMIT must be 256 or smaller."
#elif SDSORT_LIMIT < 10
#error "SDSORT_LIMIT should be greater than 9 to be useful."
#elif DISABLED(SDSORT_USES_RAM) && ENABLED(SDSORT_CACHE_NAMES)
#elif DISABLED(SDSORT_USES_RAM)
#if ENABLED(SDSORT_DYNAMIC_RAM)
#error "SDSORT_DYNAMIC_RAM requires SDSORT_USES_RAM (which reads the directory into RAM)."
#elif ENABLED(SDSORT_CACHE_NAMES)
#error "SDSORT_CACHE_NAMES requires SDSORT_USES_RAM (which reads the directory into RAM)."
#endif
#endif
#endif
/**

59
Marlin/cardreader.cpp
View file

@ -676,16 +676,30 @@ void CardReader::updir() {
// If you use folders to organize, 20 may be enough
if (fileCnt > SDSORT_LIMIT) fileCnt = SDSORT_LIMIT;
// Sort order is always needed. May be static or dynamic.
#if ENABLED(SDSORT_DYNAMIC_RAM)
sort_order = new uint8_t[fileCnt];
#endif
// Use RAM to store the entire directory during pre-sort.
// SDSORT_LIMIT should be set to prevent over-allocation.
#if ENABLED(SDSORT_USES_RAM)
#if ENABLED(SDSORT_USES_STACK)
#if DISABLED(SDSORT_CACHE_NAMES)
// If using dynamic ram for names, allocate on the heap.
#if ENABLED(SDSORT_CACHE_NAMES)
#if ENABLED(SDSORT_DYNAMIC_RAM)
sortshort = new char*[fileCnt];
sortnames = new char*[fileCnt];
#endif
#elif ENABLED(SDSORT_USES_STACK)
char sortnames[fileCnt][LONG_FILENAME_LENGTH];
#endif
// Folder sorting needs 1 bit per entry for flags.
#if HAS_FOLDER_SORTING
#if ENABLED(SDSORT_DYNAMIC_RAM)
isDir = new uint8_t[(fileCnt + 7) >> 3];
#elif ENABLED(SDSORT_USES_STACK)
uint8_t isDir[(fileCnt + 7) >> 3];
#endif
#endif
@ -707,10 +721,21 @@ void CardReader::updir() {
// If using RAM then read all filenames now.
#if ENABLED(SDSORT_USES_RAM)
getfilename(i);
#if ENABLED(SDSORT_DYNAMIC_RAM)
// Use dynamic method to copy long filename
sortnames[i] = strdup(LONGEST_FILENAME);
#if ENABLED(SDSORT_CACHE_NAMES)
// When caching also store the short name, since
// we're replacing the getfilename() behavior.
sortshort[i] = strdup(filename);
#endif
#else
// Copy filenames into the static array
strcpy(sortnames[i], LONGEST_FILENAME);
#if ENABLED(SDSORT_CACHE_NAMES)
strcpy(sortshort[i], filename);
#endif
#endif
// char out[30];
// sprintf_P(out, PSTR("---- %i %s %s"), i, filenameIsDir ? "D" : " ", sortnames[i]);
// SERIAL_ECHOLN(out);
@ -780,13 +805,30 @@ void CardReader::updir() {
}
if (!didSwap) break;
}
// Using RAM but not keeping names around
#if ENABLED(SDSORT_USES_RAM) && DISABLED(SDSORT_CACHE_NAMES)
#if ENABLED(SDSORT_DYNAMIC_RAM)
for (uint16_t i = 0; i < fileCnt; ++i) free(sortnames[i]);
#if HAS_FOLDER_SORTING
free(isDir);
#endif
#endif
#endif
}
else {
sort_order[0] = 0;
#if ENABLED(SDSORT_USES_RAM) && ENABLED(SDSORT_CACHE_NAMES)
getfilename(0);
#if ENABLED(SDSORT_DYNAMIC_RAM)
sortnames = new char*[1];
sortnames[0] = strdup(LONGEST_FILENAME); // malloc
sortshort = new char*[1];
sortshort[0] = strdup(filename); // malloc
isDir = new uint8_t[1];
#else
strcpy(sortnames[0], LONGEST_FILENAME);
strcpy(sortshort[0], filename);
#endif
isDir[0] = filenameIsDir ? 0x01 : 0x00;
#endif
}
@ -796,8 +838,21 @@ void CardReader::updir() {
}
void CardReader::flush_presort() {
if (sort_count > 0) {
#if ENABLED(SDSORT_DYNAMIC_RAM)
delete sort_order;
#if ENABLED(SDSORT_CACHE_NAMES)
for (uint8_t i = 0; i < sort_count; ++i) {
free(sortshort[i]); // strdup
free(sortnames[i]); // strdup
}
delete sortshort;
delete sortnames;
#endif
#endif
sort_count = 0;
}
}
#endif // SDCARD_SORT_ALPHA

15
Marlin/cardreader.h
View file

@ -104,23 +104,36 @@ private:
//bool sort_reverse; // Flag to enable / disable reverse sorting
#endif
// By default the sort index is static
#if ENABLED(SDSORT_DYNAMIC_RAM)
uint8_t *sort_order;
#else
uint8_t sort_order[SDSORT_LIMIT];
#endif
// Cache filenames to speed up SD menus.
#if ENABLED(SDSORT_USES_RAM)
// If using dynamic ram for names, allocate on the heap.
#if ENABLED(SDSORT_CACHE_NAMES)
#if ENABLED(SDSORT_DYNAMIC_RAM)
char **sortshort, **sortnames;
#else
char sortshort[SDSORT_LIMIT][FILENAME_LENGTH];
char sortnames[SDSORT_LIMIT][FILENAME_LENGTH];
#endif
#elif DISABLED(SDSORT_USES_STACK)
char sortnames[SDSORT_LIMIT][FILENAME_LENGTH];
#endif
// Folder sorting uses an isDir array when caching items.
#if HAS_FOLDER_SORTING && (ENABLED(SDSORT_CACHE_NAMES) || DISABLED(SDSORT_USES_STACK))
#if HAS_FOLDER_SORTING
#if ENABLED(SDSORT_DYNAMIC_RAM)
uint8_t *isDir;
#elif ENABLED(SDSORT_CACHE_NAMES) || DISABLED(SDSORT_USES_STACK)
uint8_t isDir[(SDSORT_LIMIT+7)>>3];
#endif
#endif
#endif // SDSORT_USES_RAM

2
Marlin/example_configurations/Cartesio/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/Felix/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/Hephestos/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/Hephestos_2/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/K8200/Configuration_adv.h
View file

@ -476,6 +476,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -487,6 +488,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/K8400/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/RigidBot/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/SCARA/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/TAZ4/Configuration_adv.h
View file

@ -471,6 +471,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -482,6 +483,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/WITBOX/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/delta/generic/Configuration_adv.h
View file

@ -465,6 +465,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -476,6 +477,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
View file

@ -465,6 +465,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -476,6 +477,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
View file

@ -470,6 +470,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -481,6 +482,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
View file

@ -465,6 +465,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -476,6 +477,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/makibox/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing

2
Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
View file

@ -463,6 +463,7 @@
* - SDSORT_USES_RAM provides faster sorting via a static directory buffer.
* - SDSORT_USES_STACK does the same, but uses a local stack-based buffer.
* - SDSORT_CACHE_NAMES will retain the sorted file listing in RAM. (Expensive!)
* - SDSORT_DYNAMIC_RAM only uses RAM when the SD menu is visible. (Use with caution!)
*/
//#define SDCARD_SORT_ALPHA
@ -474,6 +475,7 @@
#define SDSORT_USES_RAM false // Pre-allocate a static array for faster pre-sorting.
#define SDSORT_USES_STACK false // Prefer the stack for pre-sorting to give back some SRAM. (Negated by next 2 options.)
#define SDSORT_CACHE_NAMES false // Keep sorted items in RAM longer for speedy performance. Most expensive option.
#define SDSORT_DYNAMIC_RAM false // Use dynamic allocation (within SD menus). Least expensive option. Set SDSORT_LIMIT before use!
#endif
// Show a progress bar on HD44780 LCDs for SD printing