80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
#include "low_level_display_st7789.h"
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#include <stdio.h>
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#include <stdlib.h>
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// Note: This is a placeholder implementation
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// You'll need to add the actual ST7789 driver code to lib/st7789/
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LowLevelDisplayST7789::LowLevelDisplayST7789(const st7789_config* cfg, int w, int h)
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: config(cfg), width(w), height(h), initialized(false), rgb_buffer(nullptr) {
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}
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LowLevelDisplayST7789::~LowLevelDisplayST7789() {
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if (rgb_buffer) {
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free(rgb_buffer);
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rgb_buffer = nullptr;
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}
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}
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bool LowLevelDisplayST7789::init() {
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if (initialized) {
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return true;
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}
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// TODO: Implement ST7789 initialization
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// st7789_init(config, width, height);
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//
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// TODO: Allocate RGB565 buffer once (reused for all draw operations)
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// size_t buffer_size = width * height * sizeof(uint16_t);
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// rgb_buffer = (uint16_t *)malloc(buffer_size);
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// if (!rgb_buffer) {
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// printf("Error: Failed to allocate %zu bytes for RGB buffer\n", buffer_size);
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// return false;
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// }
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printf("ST7789 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 LowLevelDisplayST7789::clear(bool white) {
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// TODO: Implement
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(void)white;
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}
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void LowLevelDisplayST7789::draw_pixel(int x, int y, bool white) {
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// TODO: Implement
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(void)x; (void)y; (void)white;
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}
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void LowLevelDisplayST7789::draw_buffer(const uint8_t* bit_buffer) {
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// TODO: Implement - convert 1-bit to RGB565 and write
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// IMPORTANT: Use the persistent rgb_buffer member, NOT malloc/free!
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// Example:
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// if (!bit_buffer || !rgb_buffer) return;
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// for (int y = 0; y < height; y++) {
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// for (int x = 0; x < width; x++) {
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// int byte_index = (y * width + x) / 8;
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// int bit_index = 7 - (x % 8);
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// bool pixel_white = (bit_buffer[byte_index] >> bit_index) & 0x01;
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// rgb_buffer[y * width + x] = pixel_white ? COLOR_WHITE : COLOR_BLACK;
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// }
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// }
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// st7789_write(rgb_buffer, width * height);
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(void)bit_buffer;
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}
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void LowLevelDisplayST7789::refresh() {
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// ST7789 updates immediately
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}
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void LowLevelDisplayST7789::set_backlight(bool on) {
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// TODO: Implement
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(void)on;
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}
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void LowLevelDisplayST7789::set_rotation(uint8_t rotation) {
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// TODO: Implement
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(void)rotation;
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}
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