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feat: add SDCardManager rename method and EInkDisplay improvements

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- Add rename() method to SDCardManager for file/directory moves
- Improve EInkDisplay grayscale handling
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cottongin 2026-01-28 09:57:45 -05:00
parent bd4e670750
commit dede09001c
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GPG Key ID: 0ECC91FE4655C262
2 changed files with 15 additions and 6 deletions
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20
libs/display/EInkDisplay/src/EInkDisplay.cpp
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@ -399,11 +399,21 @@ void EInkDisplay::copyGrayscaleBuffers(const uint8_t* lsbBuffer, const uint8_t*
#ifdef EINK_DISPLAY_SINGLE_BUFFER_MODE
/**
* In single buffer mode, this should be called with the previously written BW buffer
* to reconstruct the RED buffer for proper differential fast refreshes following a
* grayscale display.
* to restore proper BW state after a grayscale display.
*
* The approach: Don't call grayscaleRevert() at all. Instead, just sync the RAMs with
* BW data and clear the grayscale mode flag. The physical pixels will stay in their
* current grayscale states, but subsequent refreshes will naturally transition them
* as the new BW content is displayed.
*/
void EInkDisplay::cleanupGrayscaleBuffers(const uint8_t* bwBuffer) {
// Clear grayscale mode - we don't want grayscaleRevert to be called later
// because the RAMs won't have valid grayscale data anymore
inGrayscaleMode = false;
// Sync both RAMs with BW content for proper fast refresh behavior
setRamArea(0, 0, DISPLAY_WIDTH, DISPLAY_HEIGHT);
writeRamBuffer(CMD_WRITE_RAM_BW, bwBuffer, BUFFER_SIZE);
writeRamBuffer(CMD_WRITE_RAM_RED, bwBuffer, BUFFER_SIZE);
}
#endif
@ -416,8 +426,7 @@ void EInkDisplay::displayBuffer(RefreshMode mode) {
// If currently in grayscale mode, revert first to black/white
if (inGrayscaleMode) {
inGrayscaleMode = false;
grayscaleRevert();
grayscaleRevert(); // grayscaleRevert() sets inGrayscaleMode = false internally
}
// Set up full screen RAM area
@ -477,8 +486,7 @@ void EInkDisplay::displayWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
// displayWindow is not supported while the rest of the screen has grayscale content, revert it
if (inGrayscaleMode) {
inGrayscaleMode = false;
grayscaleRevert();
grayscaleRevert(); // grayscaleRevert() sets inGrayscaleMode = false internally
}
// Calculate window buffer size

1
libs/hardware/SDCardManager/include/SDCardManager.h
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@ -29,6 +29,7 @@ class SDCardManager {
bool exists(const char* path) { return sd.exists(path); }
bool remove(const char* path) { return sd.remove(path); }
bool rmdir(const char* path) { return sd.rmdir(path); }
bool rename(const char* oldPath, const char* newPath) { return sd.rename(oldPath, newPath); }
bool openFileForRead(const char* moduleName, const char* path, FsFile& file);
bool openFileForRead(const char* moduleName, const std::string& path, FsFile& file);