Ken Van Hoeylandt
db48dfe812
- Standardized keyboard input using Unicode-based key codes across supported devices and the simulator. Keyboards don't emit `LV_KEY_*` anymore. - Refactored lilygo encoder driver into a reusable GPIO rotary encoder driver (see `Drivers/gpio-encoder-module/`). Added more features to the config file. - Improved LVGL keyboard device management, including duplicate prevention and reliable reconnects. - LVGL file mutex now registers with lvgl start/stop - Improved LVGL startup/shutdown stability and memory allocation reliability. - Increased simulator LVGL memory capacity and improved USB device-class handling.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
// SPDX-License-Identifier: Apache-2.0
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// LVGL's custom stdlib allocator backend (LV_STDLIB_CUSTOM / CONFIG_LV_USE_CUSTOM_MALLOC) - routes
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// lv_malloc()/lv_realloc()/lv_free() through the kernel's memory_*_with_policy() functions instead
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// of a fixed-size private pool (LV_STDLIB_BUILTIN) or plain malloc (LV_STDLIB_CLIB), so LVGL grows
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// dynamically and prefers PSRAM when available instead of contending with everything else for a
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// small, fixed internal-RAM arena.
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#include <lvgl/lvgl.h>
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#include <tactility/memory.h>
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// PSRAM is preferred, not required: MEMORY_CAPABILITY_EXTERNAL is `desired`, so
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// memory_alloc_with_policy()/memory_realloc_with_policy() fall back to internal RAM automatically
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// on boards without PSRAM, or if PSRAM is exhausted.
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static const struct MemoryPolicy LVGL_MEMORY_POLICY = {
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.required = 0,
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.desired = MEMORY_CAPABILITY_EXTERNAL,
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.alignment = 0,
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};
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void lv_mem_init(void) {
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}
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void lv_mem_deinit(void) {
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}
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lv_mem_pool_t lv_mem_add_pool(void* mem, size_t bytes) {
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// Not supported - memory_*_with_policy() owns allocation, LVGL doesn't need to manage its own
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// pools on top of it.
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(void)mem;
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(void)bytes;
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return NULL;
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}
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void lv_mem_remove_pool(lv_mem_pool_t pool) {
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(void)pool;
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}
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void* lv_malloc_core(size_t size) {
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return memory_alloc_with_policy(size, &LVGL_MEMORY_POLICY);
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}
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void* lv_realloc_core(void* p, size_t new_size) {
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return memory_realloc_with_policy(p, new_size, &LVGL_MEMORY_POLICY);
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}
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void lv_free_core(void* p) {
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memory_free(p);
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}
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void lv_mem_monitor_core(lv_mem_monitor_t* mon_p) {
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// Not supported - memory_*_with_policy() doesn't expose LVGL-specific usage/fragmentation
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// stats (memory_print_stats() covers overall heap state instead).
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(void)mon_p;
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}
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lv_result_t lv_mem_test_core(void) {
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return LV_RESULT_OK;
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}
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