c8683340ab
## Summary * **What is the goal of this PR?** (e.g., Implements the new feature for file uploading.) - Allows back button to be held to escape boot loops when reader activity crashes and device attempts to boot to previous state - Reduces the need of removing SD card and access to another device to delete the `/.crosspoint/state.bin` * **What changes are included?** - Back button can be held while booting to boot to home screen - Update of User Guide section to include this feature ## Additional Context * Add any other information that might be helpful for the reviewer (e.g., performance implications, potential risks, specific areas to focus on). --- ### AI Usage While CrossPoint doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it helps set the right context for reviewers. Did you use AI tools to help write this code? _**NO**_ --------- Co-authored-by: Arthur Tazhitdinov <lisnake@gmail.com>
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
#include "CrossPointState.h"
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#include <HardwareSerial.h>
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#include <SDCardManager.h>
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#include <Serialization.h>
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namespace {
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constexpr uint8_t STATE_FILE_VERSION = 3;
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constexpr char STATE_FILE[] = "/.crosspoint/state.bin";
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} // namespace
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CrossPointState CrossPointState::instance;
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bool CrossPointState::saveToFile() const {
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FsFile outputFile;
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if (!SdMan.openFileForWrite("CPS", STATE_FILE, outputFile)) {
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return false;
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}
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serialization::writePod(outputFile, STATE_FILE_VERSION);
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serialization::writeString(outputFile, openEpubPath);
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serialization::writePod(outputFile, lastSleepImage);
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serialization::writePod(outputFile, readerActivityLoadCount);
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outputFile.close();
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return true;
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}
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bool CrossPointState::loadFromFile() {
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FsFile inputFile;
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if (!SdMan.openFileForRead("CPS", STATE_FILE, inputFile)) {
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return false;
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}
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uint8_t version;
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serialization::readPod(inputFile, version);
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if (version > STATE_FILE_VERSION) {
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Serial.printf("[%lu] [CPS] Deserialization failed: Unknown version %u\n", millis(), version);
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inputFile.close();
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return false;
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}
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serialization::readString(inputFile, openEpubPath);
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if (version >= 2) {
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serialization::readPod(inputFile, lastSleepImage);
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} else {
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lastSleepImage = 0;
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}
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if (version >= 3) {
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serialization::readPod(inputFile, readerActivityLoadCount);
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}
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inputFile.close();
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return true;
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}
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