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Driver correctness

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This commit is contained in:
Ken Van Hoeylandt 2025-08-12 21:49:43 +02:00
parent 84bb29d089
commit 6c3c4f906f
2 changed files with 1 additions and 24 deletions
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2
Boards/LilygoTdeckPro/Source/hal/TdeckDisplay.cpp
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@ -71,7 +71,7 @@ bool TdeckDisplay::start() {
return false; return false;
} }
uint32_t buffer_size = 240 * 320; uint32_t buffer_size = 240 * 320; // Note: Pixel count, not bytes!
const lvgl_port_display_cfg_t disp_cfg = { const lvgl_port_display_cfg_t disp_cfg = {
.io_handle = ioHandle, .io_handle = ioHandle,

23
Boards/LilygoTdeckPro/Source/hal/esp_lcd_panel_gdeq.c
View File

@ -40,7 +40,6 @@ typedef struct {
} epaper_panel_t; } epaper_panel_t;
// --- Utility functions // --- Utility functions
static esp_err_t process_bitmap(esp_lcd_panel_t* panel, int buffer_size, const void* color_data);
static esp_err_t panel_epaper_wait_busy(esp_lcd_panel_t* panel); static esp_err_t panel_epaper_wait_busy(esp_lcd_panel_t* panel);
// --- Used to implement esp_lcd_panel_interface // --- Used to implement esp_lcd_panel_interface
static esp_err_t epaper_panel_del(esp_lcd_panel_t* panel); static esp_err_t epaper_panel_del(esp_lcd_panel_t* panel);
@ -227,9 +226,6 @@ static esp_err_t epaper_panel_draw_bitmap(esp_lcd_panel_t* panel, int x_start, i
int len_x = abs(x_start - x_end); int len_x = abs(x_start - x_end);
int len_y = abs(y_start - y_end); int len_y = abs(y_start - y_end);
int buffer_size = len_x * len_y / 8; int buffer_size = len_x * len_y / 8;
// --- Data copy & preprocess
// prepare buffer
process_bitmap(panel, buffer_size, color_data);
ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(epaper_panel->io, 0x91, NULL, 0), TAG, "tx partial in failed"); ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(epaper_panel->io, 0x91, NULL, 0), TAG, "tx partial in failed");
epaper_set_area(epaper_panel->io, x_start, y_start, x_end, y_end); epaper_set_area(epaper_panel->io, x_start, y_start, x_end, y_end);
@ -268,22 +264,3 @@ static esp_err_t epaper_panel_disp_on_off(esp_lcd_panel_t* panel, bool on_off) {
return ESP_OK; return ESP_OK;
} }
static esp_err_t process_bitmap(esp_lcd_panel_t* panel, int buffer_size, const void* color_data) {
epaper_panel_t* epaper_panel = __containerof(panel, epaper_panel_t, base);
uint8_t* byte_pixels = (uint8_t*)color_data;
for (int i = 0; i < buffer_size; i += 8) {
// Convert byte-sized pixels to bit-sized ones
uint8_t bit_pixel_group =
(0b00000001 & byte_pixels[i]) |
(0b00000010 & byte_pixels[i + 2]) |
(0b00000100 & byte_pixels[i + 3]) |
(0b00001000 & byte_pixels[i + 4]) |
(0b00010000 & byte_pixels[i + 5]) |
(0b00100000 & byte_pixels[i + 6]) |
(0b01000000 & byte_pixels[i + 7]) |
(0b10000000 & byte_pixels[i + 8]);
epaper_panel->_framebuffer[i] = bit_pixel_group;
}
return ESP_OK;
}