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Preset caching on chips with PSRAM

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- credit @akaricchi
This commit is contained in:
Blaz Kristan 2024-02-13 11:12:04 +01:00
parent e7dc2048ad
commit aa24e5d284
2 changed files with 53 additions and 1 deletions
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52
wled00/file.cpp
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@ -394,6 +394,47 @@ static String getContentType(AsyncWebServerRequest* request, String filename){
return "text/plain";
}
#if defined(BOARD_HAS_PSRAM) && defined(WLED_USE_PSRAM)
// caching presets in PSRAM may prevent occasional flashes seen when HomeAssitant polls WLED
// original idea by @akaricchi (https://github.com/Akaricchi)
// returns a pointer to the PSRAM buffer updates size parameter
static const uint8_t *getPresetCache(size_t &size) {
static unsigned long presetsCachedTime;
static uint8_t *presetsCached;
static size_t presetsCachedSize;
if (!psramFound()) {
size = 0;
return nullptr;
}
if (presetsModifiedTime != presetsCachedTime) {
if (presetsCached) {
free(presetsCached);
presetsCached = nullptr;
}
}
if (!presetsCached) {
File file = WLED_FS.open("/presets.json", "r");
if (file) {
presetsCachedTime = presetsModifiedTime;
presetsCachedSize = 0;
presetsCached = (uint8_t*)ps_malloc(file.size() + 1);
if (presetsCached) {
presetsCachedSize = file.size();
file.read(presetsCached, presetsCachedSize);
presetsCached[presetsCachedSize] = 0;
file.close();
}
}
}
size = presetsCachedSize;
return presetsCached;
}
#endif
bool handleFileRead(AsyncWebServerRequest* request, String path){
DEBUG_PRINT(F("WS FileRead: ")); DEBUG_PRINTLN(path);
if(path.endsWith("/")) path += "index.htm";
@ -404,6 +445,17 @@ bool handleFileRead(AsyncWebServerRequest* request, String path){
request->send(WLED_FS, pathWithGz, contentType);
return true;
}*/
#if defined(BOARD_HAS_PSRAM) && defined(WLED_USE_PSRAM)
if (path.endsWith("/presets.json")) {
size_t psize;
const uint8_t *presets = getPresetCache(psize);
if (presets) {
AsyncWebServerResponse *response = request->beginResponse_P(200, contentType, presets, psize);
request->send(response);
return true;
}
}
#endif
if(WLED_FS.exists(path)) {
request->send(WLED_FS, path, contentType);
return true;

2
wled00/wled.cpp
View File

@ -386,7 +386,7 @@ void WLED::setup()
pinManager.allocateMultiplePins(pins, sizeof(pins)/sizeof(managed_pin_type), PinOwner::SPI_RAM);
#endif
*/
#if defined(WLED_USE_PSRAM)
#if defined(BOARD_HAS_PSRAM) && defined(WLED_USE_PSRAM)
pDoc = new PSRAMDynamicJsonDocument(2*JSON_BUFFER_SIZE);
if (!pDoc) pDoc = new PSRAMDynamicJsonDocument(JSON_BUFFER_SIZE); // falback if double sized buffer could not be allocated
// if the above still fails requestJsonBufferLock() will always return false preventing crashes