ESP-IDF
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Outline
#include <stddef.h>
#include "sdkconfig.h"
#include "soc/soc_caps.h"
#include "hal/dma_types.h"
#include "esp_intr_alloc.h"
#include "esp_heap_caps.h"
#include "hal/lcd_hal.h"
#define LCD_I80_IO_FORMAT_BUF_SIZE
#define LCD_I80_INTR_ALLOC_FLAGS
#define LCD_I80_MEM_ALLOC_CAPS
#define LCD_PERIPH_CLOCK_PRE_SCALE
#define LCD_CLOCK_SRC_ATOMIC
#define LCD_CLOCK_SRC_ATOMIC
#define LCD_DMA_DESCRIPTOR_BUFFER_MAX_SIZE
lcd_com_reverse_buffer_bytes(uint8_t *, int, int)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_lcd/priv_include/esp_lcd_common.h
 
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/* * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #include <stddef.h> #include "sdkconfig.h" #include "soc/soc_caps.h" #include "hal/dma_types.h" #include "esp_intr_alloc.h" #include "esp_heap_caps.h"6 includes #if SOC_LCDCAM_SUPPORTED #include "hal/lcd_hal.h" #endif #ifdef __cplusplus extern "C" { #endif // size of the internal buffer to transform the data into a proper format (e.g. data endian) #define LCD_I80_IO_FORMAT_BUF_SIZE 32 #define LCD_I80_INTR_ALLOC_FLAGS ESP_INTR_FLAG_INTRDISABLED #define LCD_I80_MEM_ALLOC_CAPS MALLOC_CAP_DEFAULT #define LCD_PERIPH_CLOCK_PRE_SCALE (2) // This is the minimum divider that can be applied to LCD peripheral #if SOC_PERIPH_CLK_CTRL_SHARED #define LCD_CLOCK_SRC_ATOMIC() PERIPH_RCC_ATOMIC() #else #define LCD_CLOCK_SRC_ATOMIC() #endif #define LCD_DMA_DESCRIPTOR_BUFFER_MAX_SIZE 4095 #if SOC_LCDCAM_SUPPORTED typedef enum { LCD_COM_DEVICE_TYPE_I80, LCD_COM_DEVICE_TYPE_RGB }{...} lcd_com_device_type_t; /** * @brief Register a LCD device to platform * * @param device_type Device type, refer to lcd_com_device_type_t * @param device_obj Device object * @return >=0: member_id, <0: no free lcd bus/panel slots *//* ... */ int lcd_com_register_device(lcd_com_device_type_t device_type, void *device_obj); /** * @brief Remove a device from platform * * @param device_type Device type, refer to lcd_com_device_type_t * @param member_id member ID *//* ... */ void lcd_com_remove_device(lcd_com_device_type_t device_type, int member_id);/* ... */ #endif // SOC_LCDCAM_SUPPORTED /** * @brief Reverse the bytes in the buffer * * @note LCD is big-endian, e.g. to send command 0x1234, byte 0x12 should appear on the bus first * However, the low level peripheral (like i80, i2s) will send 0x34 first. * This helper function is used to reverse the bytes order * * @param buf buffer address * @param start start index of the buffer * @param end end index of the buffer *//* ... */ static inline void lcd_com_reverse_buffer_bytes(uint8_t *buf, int start, int end) { uint8_t temp = 0; while (start < end) { temp = buf[start]; buf[start] = buf[end]; buf[end] = temp; start++; end--; }{...} }{ ... } #ifdef __cplusplus }{...} #endif
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