WLED/wled00/presets.cpp
Blaz Kristan 8386b9a0b4 Removed dynamic JSON buffer entirely.
Temporary presets in RAM (ESP32)
Async loading of presets (stability).
Other minor fixes.
Bumped version to 0.13.1-bl6
2022-01-01 12:52:50 +01:00

127 lines
3.8 KiB
C++

#include "wled.h"
/*
* Methods to handle saving and loading presets to/from the filesystem
*/
#ifdef ARDUINO_ARCH_ESP32
static char *tmpRAMbuffer = nullptr;
#endif
static volatile byte presetToApply = 0;
static volatile byte callModeToApply = 0;
bool applyPreset(byte index, byte callMode)
{
presetToApply = index;
callModeToApply = callMode;
return true;
}
void handlePresets()
{
if (presetToApply == 0 || fileDoc) return; //JSON buffer allocated (apply preset in next cycle) or no preset waiting
JsonObject fdo;
const char *filename = presetToApply < 255 ? "/presets.json" : "/tmp.json";
// allocate buffer
DEBUG_PRINTLN(F("Apply preset JSON buffer requested."));
if (!requestJSONBufferLock(9)) return; // will also assign fileDoc
#ifdef ARDUINO_ARCH_ESP32
if (presetToApply==255 && tmpRAMbuffer!=nullptr) {
deserializeJson(*fileDoc,tmpRAMbuffer);
errorFlag = ERR_NONE;
} else
#endif
{
errorFlag = readObjectFromFileUsingId(filename, presetToApply, fileDoc) ? ERR_NONE : ERR_FS_PLOAD;
}
fdo = fileDoc->as<JsonObject>();
fdo.remove("ps"); //remove load request for presets to prevent recursive crash
deserializeState(fdo, callModeToApply, presetToApply);
#if defined(ARDUINO_ARCH_ESP32)
//Aircoookie recommended not to delete buffer
if (presetToApply==255 && tmpRAMbuffer!=nullptr) {
free(tmpRAMbuffer);
tmpRAMbuffer = nullptr;
}
#endif
releaseJSONBufferLock(); // will also clear fileDoc
if (!errorFlag && presetToApply < 255) currentPreset = presetToApply;
if (callModeToApply == CALL_MODE_BUTTON_PRESET) errorFlag = ERR_NONE; //ignore error on button press
presetToApply = 0; //clear request for preset
callModeToApply = 0;
}
//called from handleSet(PS=) [network callback (fileDoc==nullptr), IR (irrational), deserializeState, UDP] and deserializeState() [network callback (filedoc!=nullptr)]
void savePreset(byte index, bool persist, const char* pname, JsonObject saveobj)
{
if (index == 0 || (index > 250 && persist) || (index<255 && !persist)) return;
JsonObject sObj = saveobj;
bool bufferAllocated = false;
const char *filename = persist ? "/presets.json" : "/tmp.json";
if (!fileDoc) {
// called from handleSet() HTTP API
DEBUG_PRINTLN(F("Save preset JSON buffer requested."));
if (!requestJSONBufferLock(10)) return;
sObj = fileDoc->to<JsonObject>();
bufferAllocated = true;
}
if (pname) sObj["n"] = pname;
sObj.remove(F("psave"));
sObj.remove(F("v"));
if (!sObj["o"]) {
DEBUGFS_PRINTLN(F("Serialize current state"));
if (sObj["ib"].isNull() && sObj["sb"].isNull()) serializeState(sObj, true);
else serializeState(sObj, true, sObj["ib"], sObj["sb"]);
if (persist) currentPreset = index;
}
sObj.remove("o");
sObj.remove("ib");
sObj.remove("sb");
sObj.remove(F("error"));
sObj.remove(F("time"));
#if defined(ARDUINO_ARCH_ESP32)
if (index==255) {
if (tmpRAMbuffer!=nullptr) free(tmpRAMbuffer);
size_t len = measureJson(*fileDoc) + 1;
DEBUG_PRINTLN(len);
// if possible use SPI RAM on ESP32
#ifdef WLED_USE_PSRAM
if (psramFound())
tmpRAMbuffer = (char*) ps_malloc(len);
else
#endif
tmpRAMbuffer = (char*) malloc(len);
if (tmpRAMbuffer!=nullptr) {
serializeJson(*fileDoc, tmpRAMbuffer, len);
} else {
writeObjectToFileUsingId(filename, index, fileDoc);
}
} else
#endif
writeObjectToFileUsingId(filename, index, fileDoc);
if (persist) presetsModifiedTime = toki.second(); //unix time
if (bufferAllocated) releaseJSONBufferLock();
updateFSInfo();
}
void deletePreset(byte index) {
StaticJsonDocument<24> empty;
writeObjectToFileUsingId("/presets.json", index, &empty);
presetsModifiedTime = toki.second(); //unix time
updateFSInfo();
}