[qemu-a9] add lvgl support.

bsp/qemu-vexpress-a9/drivers/Kconfig

@@ -6,9 +6,18 @@ config RT_USING_UART1
     bool "Enable UART1"
     default y
 
+config BSP_USING_LVGL
+    bool "Enable LVGL"
+    default n
+
 config BSP_DRV_CLCD
     bool "CLCD driver"
-    depends on PKG_USING_GUIENGINE
+    depends on PKG_USING_GUIENGINE || BSP_USING_LVGL
+    default y
+
+config BSP_DRV_MOUSE
+    bool "MOUSE driver"
+    depends on PKG_USING_GUIENGINE || BSP_USING_LVGL
     default y
 
 if BSP_DRV_CLCD

bsp/qemu-vexpress-a9/drivers/drv_mouse.c

@@ -20,6 +20,8 @@
 #define DBG_LVL DBG_INFO
 #include "rtdbg.h"
 
+#ifdef BSP_DRV_MOUSE
+
 #define MOUSE_ADDRESS    (0x10007000)
 #define MOUSE_IRQ_NUM    (IRQ_VEXPRESS_A9_MOUSE)
 #define MOUSE_XMAX       (BSP_LCD_WIDTH)
@@ -34,9 +36,15 @@
 #define MOUSE_BUTTON_WHELL   (0x80)
 
 #ifdef PKG_USING_GUIENGINE
-
 #include <rtgui/event.h>
 #include <rtgui/rtgui_server.h>
+#elif defined(PKG_USING_LITTLEVGL2RTT)
+#include <littlevgl2rtt.h>
+#elif defined(PKG_USING_LVGL)
+#include <lvgl.h>
+#include <lv_port_indev.h>
+static rt_bool_t touch_down = RT_FALSE;
+#endif
 
 typedef rt_uint32_t virtual_addr_t;
 
@@ -110,6 +118,7 @@ static rt_uint32_t emouse_id;
 
 void push_event_touch_move(int x, int y)
 {
+#ifdef PKG_USING_GUIENGINE
     struct rtgui_event_mouse emouse;
 
     emouse.parent.sender = RT_NULL;
@@ -124,10 +133,16 @@ void push_event_touch_move(int x, int y)
 
     LOG_D("[line]:%d motion event id:%d x:%d y:%d", __LINE__, emouse.id, x, y);
     rtgui_server_post_event(&emouse.parent, sizeof(emouse));
+#elif defined(PKG_USING_LITTLEVGL2RTT)
+    littlevgl2rtt_send_input_event(x, y, LITTLEVGL2RTT_INPUT_MOVE);
+#elif defined(PKG_USING_LVGL)
+    lv_port_indev_input(x, y, (touch_down == RT_TRUE) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL);
+#endif
 }
 
 void push_event_touch_begin(int x, int y)
 {
+#ifdef PKG_USING_GUIENGINE
     struct rtgui_event_mouse emouse;
 
     emouse_id = rt_tick_get();
@@ -143,10 +158,17 @@ void push_event_touch_begin(int x, int y)
     emouse.id = emouse_id;
     LOG_D("[line]:%d down event id:%d x:%d y:%d", __LINE__, emouse.id, x, y);
     rtgui_server_post_event(&emouse.parent, sizeof(emouse));
+#elif defined(PKG_USING_LITTLEVGL2RTT)
+    littlevgl2rtt_send_input_event(x, y, LITTLEVGL2RTT_INPUT_DOWN);
+#elif defined(PKG_USING_LVGL)
+    touch_down = RT_TRUE;
+    lv_port_indev_input(x, y, (touch_down == RT_TRUE) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL);
+#endif
 }
 
 void push_event_touch_end(int x, int y)
 {
+#ifdef PKG_USING_GUIENGINE
     struct rtgui_event_mouse emouse;
 
     emouse.parent.sender = RT_NULL;
@@ -158,9 +180,15 @@ void push_event_touch_end(int x, int y)
     emouse.y = y;
     emouse.ts = rt_tick_get();
     emouse.id = emouse_id;
-    
+
     LOG_D("[line]:%d up event id:%d x:%d y:%d", __LINE__, emouse.id, x, y);
     rtgui_server_post_event(&emouse.parent, sizeof(emouse));
+#elif defined(PKG_USING_LITTLEVGL2RTT)
+    littlevgl2rtt_send_input_event(x, y, LITTLEVGL2RTT_INPUT_MOVE);
+#elif defined(PKG_USING_LVGL)
+    touch_down = RT_FALSE;
+    lv_port_indev_input(x, y, (touch_down == RT_TRUE) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL);
+#endif
 }
 
 static void mouse_pl050_interrupt(int irq, void * data)
@@ -243,7 +271,7 @@ int rt_hw_mouse_init(void)
                 ((read32(virt + 0xfe8) & 0xff) << 16) |
                 ((read32(virt + 0xfe4) & 0xff) <<  8) |
                 ((read32(virt + 0xfe0) & 0xff) <<  0));
-    
+
     if(((id >> 12) & 0xff) != 0x41 || (id & 0xfff) != 0x050)
     {
         LOG_E("read id fail id:0x%08x", id);

bsp/qemu-vexpress-a9/drivers/lvgl/.ignore_format.yml

@@ -0,0 +1,6 @@
+# files format check exclude path, please follow the instructions below to modify;
+# If you need to exclude an entire folder, add the folder path in dir_path;
+# If you need to exclude a file, add the path to the file in file_path.
+
+dir_path:
+- demo

bsp/qemu-vexpress-a9/drivers/lvgl/SConscript

@@ -0,0 +1,18 @@
+from building import *
+import os
+
+cwd = GetCurrentDir()
+group = []
+src = Glob('*.c')
+CPPPATH = [cwd]
+CPPDEFINES = ['STM32F4']
+
+list = os.listdir(cwd)
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(d, 'SConscript'))
+
+group += DefineGroup('LVGL-port', src, depend = ['BSP_USING_LVGL'], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+
+Return('group')

bsp/qemu-vexpress-a9/drivers/lvgl/demo/SConscript

@@ -0,0 +1,19 @@
+import rtconfig
+
+from building import *
+
+cwd = GetCurrentDir()
+src = Glob('*.c') + Glob('*.cpp')
+
+path =  [cwd]
+path += [cwd + '/src']
+
+src += Glob('src/lv_demo_music/*.c')
+src += Glob('src/lv_demo_music/assets/*.c')
+
+path += [cwd + '/src/lv_demo_music']
+path += [cwd + '/src/lv_demo_music/assets']
+
+group = DefineGroup('LVGL-demo', src, depend = ['BSP_USING_LVGL'], CPPPATH = path)
+
+Return('group')

bsp/qemu-vexpress-a9/drivers/lvgl/demo/lv_demo.h

@@ -0,0 +1,81 @@
+/**
+ * @file lv_examples.h
+ *
+ */
+
+#ifndef LV_DEMO_H
+#define LV_DEMO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*If "lv_conf.h" is available from here try to use it later.*/
+#ifdef __has_include
+#  if __has_include("lvgl.h")
+#    ifndef LV_LVGL_H_INCLUDE_SIMPLE
+#      define LV_LVGL_H_INCLUDE_SIMPLE
+#    endif
+#  endif
+#endif
+
+#ifdef __has_include
+#  if __has_include("lv_demo_conf.h")
+#    ifndef LV_DEMO_CONF_INCLUDE_SIMPLE
+#      define LV_DEMO_CONF_INCLUDE_SIMPLE
+#    endif
+#  endif
+#endif
+
+#if defined(LV_LVGL_H_INCLUDE_SIMPLE)
+#include <lvgl.h>
+#else
+#include <lvgl.h>
+#endif
+
+#if defined(LV_DEMO_CONF_PATH)
+#define __LV_TO_STR_AUX(x) #x
+#define __LV_TO_STR(x) __LV_TO_STR_AUX(x)
+#include __LV_TO_STR(LV_DEMO_CONF_PATH)
+#undef __LV_TO_STR_AUX
+#undef __LV_TO_STR
+#elif defined(LV_DEMO_CONF_INCLUDE_SIMPLE)
+#include "lv_demo_conf.h"
+#else
+#include <lv_conf.h>
+#endif
+
+#include "src/lv_demo_music/lv_demo_music.h"
+
+
+/*********************
+ *      DEFINES
+ *********************/
+/*Test  lvgl version*/
+#if LV_VERSION_CHECK(8, 0, 0) == 0
+#error "lv_demo: Wrong lvgl version"
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_DEMO_H*/

bsp/qemu-vexpress-a9/drivers/lvgl/demo/src/lv_demo.h

@@ -0,0 +1,40 @@
+/**
+ * @file lv_examples.h
+ * This file exists only to be compatible with Arduino's library structure
+ */
+
+#ifndef LV_DEMO_SRC_H
+#define LV_DEMO_SRC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../lv_demo.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_DEMO_SRC_H*/

bsp/qemu-vexpress-a9/drivers/lvgl/demo/src/lv_demo_music/README.md

@@ -0,0 +1,27 @@
+# Music player demo
+
+## Overview
+The music player demo shows what kind of modern, smartphone-like user interfaces can be created on LVGL. It works the best with display with 480x272 or 272x480 resolution. 
+
+
+![Music player demo with LVGL embedded GUI library](https://github.com/lvgl/lv_examples/blob/master/src/lv_demo_music/screenshot1.gif?raw=true)
+
+## Run the demo
+- In `lv_ex_conf.h` set `LV_USE_DEMO_MUSIC 1`
+- With `LV_DEMO_MUSIC_AUTO_PLAY` enabled a ~60 sec demo will be played.
+- After `lv_init()` and initializing the drivers call `lv_demo_music()`
+
+## How the spectrum animation works
+- `assets/spectrum.py` creates an array of spectrum values from a music. 4 band are created with 33 samples/sec: bass, bass-mid, mid, mid-treble.
+- The spectrum meter UI does the followings:
+	- Zoom the album cover proportionality to the current bass value
+	- Display the 4 bands on the left side of a circle by default at 0°, 45°, 90°, 135° 
+	- Add extra bars next to the "main bars" with a cosine shape. Add more bars for the lower bands.
+	- If the there is a large enough bass add a random offset to the position of the bars. E.g. start from 63° istead of 0°. (bars greater than 180° start again from 0°)
+	- If there no bass add 1 to the offset of the bars (it creates a "walking" effect)
+	- Mirror the bars to the right side of the circle
+
+## Using spectrum.py
+- install `librosa` with `pip3 install librosa`	
+- run `python sectrum.py my_file.mp3`
+- see the result in `spectrum.h`