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change(i80_lcd): set DMA transfer burst size

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morris
2024-05-13 14:44:06 +08:00
parent dc060460ea
commit 75b5f02490
4 changed files with 33 additions and 31 deletions
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6
examples/peripherals/lcd/i80_controller/main/i80_controller_example_main.c
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@@ -93,8 +93,7 @@ static const char *TAG = "example";
#define EXAMPLE_LVGL_TASK_STACK_SIZE (4 * 1024)
#define EXAMPLE_LVGL_TASK_PRIORITY 2
// Supported alignment: 16, 32, 64. A higher alignment can enables higher burst transfer size, thus a higher i80 bus throughput.
#define EXAMPLE_PSRAM_DATA_ALIGNMENT 64
#define EXAMPLE_DMA_BURST_SIZE 64 // 16, 32, 64. Higher burst size can improve the performance when the DMA buffer comes from PSRAM
static SemaphoreHandle_t lvgl_mux = NULL;
@@ -248,8 +247,7 @@ void example_init_i80_bus(esp_lcd_panel_io_handle_t *io_handle, void *user_ctx)
},
.bus_width = CONFIG_EXAMPLE_LCD_I80_BUS_WIDTH,
.max_transfer_bytes = EXAMPLE_LCD_H_RES * 100 * sizeof(uint16_t),
.psram_trans_align = EXAMPLE_PSRAM_DATA_ALIGNMENT,
.sram_trans_align = 4,
.dma_burst_size = EXAMPLE_DMA_BURST_SIZE,
};
ESP_ERROR_CHECK(esp_lcd_new_i80_bus(&bus_config, &i80_bus));