Justin Mitchell
9b3885135f
## Summary Adds Xteink X3 hardware support to CrossPoint Reader. The X3 uses the same SSD1677 e-ink controller as the X4 but with a different panel (792x528 vs 800x480), different button layout, and an I2C fuel gauge (BQ27220) instead of ADC-based battery reading. All X3-specific behavior is gated by runtime device detection — X4 behavior is unchanged. Depends on community-sdk X3 support: open-x4-epaper/community-sdk#19 (merged). ## Changes ### HAL Layer **HalGPIO** (`lib/hal/HalGPIO.cpp/.h`) - I2C-based device fingerprinting at boot: probes for BQ27220 fuel gauge, DS3231 RTC, and QMI8658 IMU to distinguish X3 from X4 - Detection result cached in NVS for fast subsequent boots - Exposes `deviceIsX3()` / `deviceIsX4()` helpers used throughout the codebase - X3 button mapping (7 GPIOs vs X4's layout) - USB connection detection and wake classification for X3 **HalDisplay** (`lib/hal/HalDisplay.cpp/.h`) - Calls `einkDisplay.setDisplayX3()` before init when X3 is detected - Requests display resync after power button / flash wake events - Runtime display dimension accessors (`getDisplayWidth()`, `getDisplayHeight()`, `getBufferSize()`) - Exposed as global `display` instance for use by image converters **HalPowerManager** (`lib/hal/HalPowerManager.cpp/.h`) - X3 battery reading via I2C fuel gauge (BQ27220 at 0x55, SOC register) - X3 power button uses GPIO hold for deep sleep ### Display & Rendering **GfxRenderer** (`lib/GfxRenderer/GfxRenderer.cpp/.h`) - Buffer size and display dimensions are now runtime values (not compile-time constants) to support both panel sizes - X3 anti-aliasing tuning: only the darker grayscale level is applied to avoid washed-out text on the X3 panel. X4 retains both levels via `deviceIsX4()` gate **Image Converters** (`lib/JpegToBmpConverter`, `lib/PngToBmpConverter`) - Cover image prescale target uses runtime display dimensions from HAL instead of hardcoded 800x480 ### UI Themes **BaseTheme / LyraTheme** (`src/components/themes/`) - X3 button position mapping for the different physical layout - Adjusted UI element positioning for 792x528 viewport ### Boot & Init **main.cpp** - X3 hardware detection logging - Adjusted init sequence for X3 (no `HalSystem::begin()` dependency on X3 path) **HomeActivity** - Uses runtime `renderer.getBufferSize()` instead of static `GfxRenderer::getBufferSize()` FYI I did not add support for the gyro page turner. That can be it's own PR.
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
#pragma once
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#include <HalStorage.h>
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#include <memory>
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#include <string>
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class GfxRenderer;
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struct ImageDimensions {
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int16_t width;
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int16_t height;
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};
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struct RenderConfig {
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int x, y;
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int maxWidth, maxHeight;
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bool useGrayscale = true;
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bool useDithering = true;
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bool performanceMode = false;
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bool useExactDimensions = false; // If true, use maxWidth/maxHeight as exact output size (no recalculation)
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std::string cachePath; // If non-empty, decoder will write pixel cache to this path
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};
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class ImageToFramebufferDecoder {
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public:
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virtual ~ImageToFramebufferDecoder() = default;
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virtual bool decodeToFramebuffer(const std::string& imagePath, GfxRenderer& renderer, const RenderConfig& config) = 0;
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virtual bool getDimensions(const std::string& imagePath, ImageDimensions& dims) const = 0;
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virtual const char* getFormatName() const = 0;
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protected:
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// Size validation helpers
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static constexpr int MAX_SOURCE_PIXELS = 3145728; // 2048 * 1536
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bool validateImageDimensions(int width, int height, const std::string& format);
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void warnUnsupportedFeature(const std::string& feature, const std::string& imagePath);
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};
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