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Papers3 improvements (#611)

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- And Tab5 keyboard improvements
- Usb host keyboard improvements
- Symbols
- Requires the device.py change from CL-32 PR but that only affects visuals and not build breaking
This commit is contained in:
Shadowtrance
2026-08-08 23:02:49 +10:00
committed by GitHub
parent 564d8af64c
commit dc3f6104b8
14 changed files with 251 additions and 92 deletions
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Modules/lvgl-module/source/devices/display.cpp
+18 -6
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@@ -59,13 +59,18 @@ struct LvglDisplayCtx {
bool byte_swap;
};
static void* lvgl_display_alloc_buffer(size_t size_bytes) {
static void* lvgl_display_alloc_buffer(size_t size_bytes, bool prefer_external_ram) {
#ifdef ESP_PLATFORM
// Must match LV_DRAW_BUF_ALIGN (can be > 4 - e.g. 64, tied to the cache line size for
// DMA2D/PPA coherency on some targets - see sdkconfig's CONFIG_LV_DRAW_BUF_ALIGN). A buffer
// allocated less strictly than that fails lv_display_set_buffers()'s alignment assert, which
// is configured to LV_ASSERT_HANDLER (while(1);) rather than a clean abort - i.e. a silent hang.
void* buf = heap_caps_aligned_alloc(LV_DRAW_BUF_ALIGN, size_bytes, MALLOC_CAP_DMA | MALLOC_CAP_8BIT);
// MALLOC_CAP_DMA is scarce internal RAM - skip it for displays that don't DMA directly from
// this buffer (see prefer_external_ram_buffer). Dropping MALLOC_CAP_DMA alone isn't enough to
// land in PSRAM though: MALLOC_CAP_8BIT alone is still satisfied by internal RAM, so
// MALLOC_CAP_SPIRAM must be requested explicitly (confirmed on real hardware).
uint32_t caps = prefer_external_ram ? (MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT) : (MALLOC_CAP_DMA | MALLOC_CAP_8BIT);
void* buf = heap_caps_aligned_alloc(LV_DRAW_BUF_ALIGN, size_bytes, caps);
if (buf == NULL) {
buf = heap_caps_aligned_alloc(LV_DRAW_BUF_ALIGN, size_bytes, MALLOC_CAP_DEFAULT);
}
@@ -104,6 +109,13 @@ static bool lvgl_display_map_color_format(enum DisplayColorFormat in, lv_color_f
// (e.g. ssd1306_draw_bitmap()'s row-to-page transpose).
*out = LV_COLOR_FORMAT_I1;
return true;
case DISPLAY_COLOR_FORMAT_GRAYSCALE8:
// Row-major, 1 byte/pixel luminance (0x00=black, 0xFF=white) - matches LV_COLOR_FORMAT_L8
// directly, no repacking needed. Deliberately NOT routed through the I1 branch below in
// lvgl_display_add(): I1 is hardcoded to LV_DISPLAY_RENDER_MODE_FULL there, which is what
// this format exists to avoid for panels that want real partial/tile updates.
*out = LV_COLOR_FORMAT_L8;
return true;
default:
return false;
}
@@ -396,7 +408,7 @@ error_t lvgl_display_add(struct Device* device, const struct LvglDisplayConfig*
// buffer's start (see lvgl_display_flush_cb()). Always redraw the whole frame in one
// owned buffer instead of computing partial-region byte offsets against that packing.
buf_size_bytes = (size_t)((hres + 7) / 8) * vres + 8;
ctx->buf1 = lvgl_display_alloc_buffer(buf_size_bytes);
ctx->buf1 = lvgl_display_alloc_buffer(buf_size_bytes, config->prefer_external_ram);
if (ctx->buf1 == NULL) {
delete wrapper;
return ERROR_OUT_OF_MEMORY;
@@ -416,13 +428,13 @@ error_t lvgl_display_add(struct Device* device, const struct LvglDisplayConfig*
? vres : config->buffer_height;
buf_size_bytes = (size_t)hres * buf_height * bpp;
ctx->buf1 = lvgl_display_alloc_buffer(buf_size_bytes);
ctx->buf1 = lvgl_display_alloc_buffer(buf_size_bytes, config->prefer_external_ram);
if (ctx->buf1 == NULL) {
delete wrapper;
return ERROR_OUT_OF_MEMORY;
}
if (config->double_buffer) {
ctx->buf2 = lvgl_display_alloc_buffer(buf_size_bytes);
ctx->buf2 = lvgl_display_alloc_buffer(buf_size_bytes, config->prefer_external_ram);
if (ctx->buf2 == NULL) {
lvgl_display_free_buffer(ctx->buf1);
delete wrapper;
@@ -436,7 +448,7 @@ error_t lvgl_display_add(struct Device* device, const struct LvglDisplayConfig*
ctx->buf_size_bytes = buf_size_bytes;
if (ctx->sw_rotate) {
ctx->rotate_buf = lvgl_display_alloc_buffer(buf_size_bytes);
ctx->rotate_buf = lvgl_display_alloc_buffer(buf_size_bytes, config->prefer_external_ram);
if (ctx->rotate_buf == NULL) {
if (ctx->owns_buffers) {
lvgl_display_free_buffer(ctx->buf1);