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feat(i80_lcd): add help function to allocate draw buffer with proper alignment

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This commit is contained in:
morris
2024-05-29 22:45:46 +08:00
parent c4b2bd89da
commit 5eaec29c02
4 changed files with 42 additions and 13 deletions
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examples/peripherals/lcd/i80_controller/main/i80_controller_example_main.c
+6 -12
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@@ -9,6 +9,7 @@
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "esp_timer.h"
#include "esp_heap_caps.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_panel_ops.h"
@@ -18,7 +19,6 @@
#include "driver/i2c.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_dma_utils.h"
#include "lvgl.h"
#if CONFIG_EXAMPLE_LCD_TOUCH_CONTROLLER_GT911
#include "esp_lcd_touch_gt911.h"
@@ -443,18 +443,12 @@ void app_main(void)
lv_init();
// alloc draw buffers used by LVGL
// it's recommended to choose the size of the draw buffer(s) to be at least 1/10 screen sized
lv_color_t *buf1 = NULL;
lv_color_t *buf2 = NULL;
esp_dma_mem_info_t dma_mem_info = {
.dma_alignment_bytes = 4,
uint32_t draw_buf_alloc_caps = 0;
#if CONFIG_EXAMPLE_LCD_I80_COLOR_IN_PSRAM
.extra_heap_caps = MALLOC_CAP_SPIRAM,
#else
.extra_heap_caps = MALLOC_CAP_INTERNAL,
#endif // CONFIG_EXAMPLE_LCD_I80_COLOR_IN_PSRAM
};
ESP_ERROR_CHECK(esp_dma_capable_malloc(EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), &dma_mem_info, (void *)&buf1, NULL));
ESP_ERROR_CHECK(esp_dma_capable_malloc(EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), &dma_mem_info, (void *)&buf2, NULL));
draw_buf_alloc_caps |= MALLOC_CAP_SPIRAM;
#endif
lv_color_t *buf1 = esp_lcd_i80_alloc_draw_buffer(io_handle, EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), draw_buf_alloc_caps);
lv_color_t *buf2 = esp_lcd_i80_alloc_draw_buffer(io_handle, EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), draw_buf_alloc_caps);
assert(buf1);
assert(buf2);
ESP_LOGI(TAG, "buf1@%p, buf2@%p", buf1, buf2);