98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
#include "low_level_display_epaper.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// Note: This is a placeholder implementation
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// You'll need to add the actual e-paper driver code to lib/epaper/
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LowLevelDisplayEPaper::LowLevelDisplayEPaper(const epaper_config* cfg, int w, int h)
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: config(cfg), width(w), height(h), initialized(false), framebuffer(nullptr), dirty(false) {
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// Allocate framebuffer (1 bit per pixel for monochrome e-paper)
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int buffer_size = (width * height + 7) / 8; // Round up to nearest byte
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framebuffer = (uint8_t*)malloc(buffer_size);
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if (framebuffer) {
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memset(framebuffer, 0xFF, buffer_size); // White
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}
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}
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LowLevelDisplayEPaper::~LowLevelDisplayEPaper() {
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if (framebuffer) {
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free(framebuffer);
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}
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}
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bool LowLevelDisplayEPaper::init() {
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if (initialized) {
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return true;
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}
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if (!framebuffer) {
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printf("Failed to allocate framebuffer for e-paper display\n");
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return false;
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}
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// TODO: Implement e-paper initialization
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// epaper_init(config, width, height);
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printf("E-paper display initialized: %dx%d (stub)\n", width, height);
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initialized = true;
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return false; // Return false until actual driver is implemented
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}
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void LowLevelDisplayEPaper::clear(bool white) {
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if (!framebuffer) return;
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int buffer_size = (width * height + 7) / 8;
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memset(framebuffer, white ? 0xFF : 0x00, buffer_size);
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dirty = true;
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}
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void LowLevelDisplayEPaper::draw_pixel(int x, int y, bool white) {
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if (!framebuffer || x < 0 || x >= width || y < 0 || y >= height) {
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return;
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}
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int byte_index = (y * width + x) / 8;
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int bit_index = 7 - ((y * width + x) % 8);
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if (white) {
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framebuffer[byte_index] |= (1 << bit_index);
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} else {
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framebuffer[byte_index] &= ~(1 << bit_index);
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}
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dirty = true;
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}
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void LowLevelDisplayEPaper::draw_buffer(const uint8_t* bit_buffer) {
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if (!bit_buffer || !framebuffer) return;
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// Direct copy of 1-bit buffer
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int buffer_size = (width * height + 7) / 8;
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memcpy(framebuffer, bit_buffer, buffer_size);
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dirty = true;
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}
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void LowLevelDisplayEPaper::refresh() {
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if (!dirty || !framebuffer) {
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return;
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}
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// TODO: Implement actual e-paper refresh
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// epaper_update(framebuffer);
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printf("E-paper refresh (stub)\n");
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dirty = false;
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}
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void LowLevelDisplayEPaper::clear_display() {
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clear(true); // Fill with white
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refresh();
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}
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void LowLevelDisplayEPaper::sleep() {
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// TODO: Implement e-paper sleep mode
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// epaper_sleep();
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}
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