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Code Issues Releases Wiki Activity

[lvgl] Fix initialisation race condition (Bugfix) (#8369)

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Clyde Stubbs 2025-03-07 18:58:21 +11:00 committed by GitHub
parent 3e9556c6c2
commit 583f8f598a
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GPG Key ID: B5690EEEBB952194
1 changed files with 27 additions and 19 deletions
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46
esphome/components/lvgl/lvgl_esphome.cpp
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@ -416,37 +416,45 @@ LvglComponent::LvglComponent(std::vector<display::Display *> displays, float buf
buffer_frac_(buffer_frac),
full_refresh_(full_refresh),
resume_on_input_(resume_on_input) {
auto *display = this->displays_[0];
size_t buffer_pixels = display->get_width() * display->get_height() / this->buffer_frac_;
auto buf_bytes = buffer_pixels * LV_COLOR_DEPTH / 8;
this->rotation = display->get_rotation();
if (this->rotation != display::DISPLAY_ROTATION_0_DEGREES) {
this->rotate_buf_ = static_cast<lv_color_t *>(lv_custom_mem_alloc(buf_bytes)); // NOLINT
if (this->rotate_buf_ == nullptr)
return;
}
auto *buf = lv_custom_mem_alloc(buf_bytes); // NOLINT
if (buf == nullptr)
return;
lv_disp_draw_buf_init(&this->draw_buf_, buf, nullptr, buffer_pixels);
lv_disp_draw_buf_init(&this->draw_buf_, nullptr, nullptr, 0);
lv_disp_drv_init(&this->disp_drv_);
this->disp_drv_.draw_buf = &this->draw_buf_;
this->disp_drv_.user_data = this;
this->disp_drv_.full_refresh = this->full_refresh_;
this->disp_drv_.flush_cb = static_flush_cb;
this->disp_drv_.rounder_cb = rounder_cb;
this->disp_drv_.hor_res = (lv_coord_t) display->get_width();
this->disp_drv_.ver_res = (lv_coord_t) display->get_height();
this->disp_drv_.hor_res = 0;
this->disp_drv_.ver_res = 0;
this->disp_ = lv_disp_drv_register(&this->disp_drv_);
}
void LvglComponent::setup() {
if (this->draw_buf_.buf1 == nullptr) {
ESP_LOGCONFIG(TAG, "LVGL Setup starts");
auto *display = this->displays_[0];
auto width = display->get_width();
auto height = display->get_height();
size_t buffer_pixels = width * height / this->buffer_frac_;
auto buf_bytes = buffer_pixels * LV_COLOR_DEPTH / 8;
auto *buffer = lv_custom_mem_alloc(buf_bytes); // NOLINT
if (buffer == nullptr) {
this->mark_failed();
this->status_set_error("Memory allocation failure");
return;
}
ESP_LOGCONFIG(TAG, "LVGL Setup starts");
lv_disp_draw_buf_init(&this->draw_buf_, buffer, nullptr, buf_bytes);
this->disp_drv_.hor_res = width;
this->disp_drv_.ver_res = height;
// this->setup_driver_(display->get_width(), display->get_height());
lv_disp_drv_update(this->disp_, &this->disp_drv_);
this->rotation = display->get_rotation();
if (this->rotation != display::DISPLAY_ROTATION_0_DEGREES) {
this->rotate_buf_ = static_cast<lv_color_t *>(lv_custom_mem_alloc(this->draw_buf_.size)); // NOLINT
if (this->rotate_buf_ == nullptr) {
this->mark_failed();
this->status_set_error("Memory allocation failure");
return;
}
}
#if LV_USE_LOG
lv_log_register_print_cb([](const char *buf) {
auto next = strchr(buf, ')');
@ -458,8 +466,8 @@ void LvglComponent::setup() {
});
#endif
// Rotation will be handled by our drawing function, so reset the display rotation.
for (auto *display : this->displays_)
display->set_rotation(display::DISPLAY_ROTATION_0_DEGREES);
for (auto *disp : this->displays_)
disp->set_rotation(display::DISPLAY_ROTATION_0_DEGREES);
this->show_page(0, LV_SCR_LOAD_ANIM_NONE, 0);
lv_disp_trig_activity(this->disp_);
ESP_LOGCONFIG(TAG, "LVGL Setup complete");