stm32f429移植uGUI（上篇）

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stary666 发布时间：2018-1-15 16:33

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发现一个新的GUI，很小巧，心就痒痒了，想试试，目前官方版本是v0.3，官方网站也只提供了f429的demo，但是因本人见识较少，不知道那工程是什么后缀STM32F429.coproj，无奈，就就自己移植一下玩玩了，权当娱乐了。下班回到家，把f429的discover板子找了出来，已经放了3年了，竟然还能亮起来，很兴奋啊。又从网上找了个discover的例程能点亮ltdc的。万事具备了。
先把GUI介绍一下，

What is μGUI

μGUI is a free and open source graphic library for embedded systems. It is platform-independent and can be easily ported to almost any microcontroller system. As long as the display is capable of showing graphics, μGUI is not restricted to a certain display technology. Therefore, display technologies such as LCD, TFT, E-Paper, LED or OLED are supported. The whole module consists of two files: ugui.c and ugui.h.

μGUI Features

μGUI supports any color, grayscale or monochrome display
μGUI supports any display resolution
μGUI supports multiple different displays
μGUI supports any touch screen technology (e.g. AR, PCAP)
μGUI supports windows and objects (e.g. button, textbox)
16 different fonts available
integrated and free scalable system console
basic geometric functions (e.g. line, circle, frame etc.)
can be easily ported to almost any microcontroller system
no risky dynamic memory allocation required
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μGUI Requirements
μGUI is platform-independent, so there is no need to use a certain embedded
system. In order to use μGUI, only two requirements are necessary:

a C-function which is able to control pixels of the target display.
integer types for the target platform have to be adjusted in ugui.h.
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这是从官方论坛拷贝的。大家自己看。
一大早睡不着了，就起来开始移植，花了近2小时，终于移植成功了，当然还没有完成触摸的移植。下面开始汇报一下。
找了个非常干净的例程，里面除了驱动，就是ADC例程，直接删除即可开始移植了。
先上个图看看。

把官方例程的

这几个文件拷贝过来，放到一个文件夹里。把官方例程里的system.h头文件换成例程的Com.h，当然头文件里要增加上图4个c文件的头文件即可。解决几个小的错误，把delay.c里的初始化直接删除，然后在main.c文件中清除些之前工程的函数及变量等，把官方例程main.c文件中的函数，及相关代码拷贝过来即可。需要拷贝的有
/* GUI structure */
UG_GUI gui;

/* Touch structure */
//static TP_STATE* TP_State;

/* Some defines */
#define MAX_OBJECTS       10
#define TOGGLE_GREEN_LED GPIO_ToggleBits(GPIOG,GPIO_Pin_13);
#define TOGGLE_RED_LED    GPIO_ToggleBits(GPIOG,GPIO_Pin_14);

/* Window 1 */
UG_WINDOW window_1;
UG_OBJECT obj_buff_wnd_1[MAX_OBJECTS];
UG_BUTTON button1_1;
UG_BUTTON button1_2;
UG_BUTTON button1_3;
UG_BUTTON button1_4;
UG_BUTTON button1_5;
UG_BUTTON button1_6;

/* Window 2 */
UG_WINDOW window_2;
UG_OBJECT obj_buff_wnd_2[MAX_OBJECTS];
UG_BUTTON button2_1;
UG_TEXTBOX textbox2_1;
UG_TEXTBOX textbox2_2;
UG_IMAGE image2_1;

/* Window 3 */
UG_WINDOW window_3;
UG_OBJECT obj_buff_wnd_3[MAX_OBJECTS];
UG_BUTTON button3_1;
UG_TEXTBOX textbox3_1;

/* FSM */
#define STATE_MAIN_MENU             0
#define STATE_BENCHMARK_RUN          1
#define STATE_BENCHMARK_RESULT       2
volatile UG_U32 state;
volatile UG_U32 next_state;

/* Benchmark */
volatile UG_U32 timer;
volatile UG_U32 hw_acc = 1;
char result_str[30];
UG_S16 xs,ys;
UG_S16 xe,ye;
UG_COLOR c;

extern u32 ltdc_work_layer;

/* Hardware accelerator for UG_DrawLine (Platform: STM32F4x9) */
UG_RESULT _HW_DrawLine( UG_S16 x1, UG_S16 y1, UG_S16 x2, UG_S16 y2, UG_COLOR c )
{
DMA2D_InitTypeDef DMA2D_InitStruct;

RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_DMA2D, ENABLE);
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_DMA2D, DISABLE);
DMA2D_InitStruct.DMA2D_Mode = DMA2D_R2M;
DMA2D_InitStruct.DMA2D_CMode = DMA2D_RGB565;
/* Convert UG_COLOR to RGB565 */
DMA2D_InitStruct.DMA2D_OutputBlue = (c>>3) & 0x1F;
DMA2D_InitStruct.DMA2D_OutputGreen = (c>>10) & 0x3F;
DMA2D_InitStruct.DMA2D_OutputRed = (c>>19) & 0x1F;
DMA2D_InitStruct.DMA2D_OutputAlpha = 0x0F;

/* horizontal line */
if ( y1 == y2 )
{
   DMA2D_InitStruct.DMA2D_OutputOffset = 0;
   DMA2D_InitStruct.DMA2D_NumberOfLine = 1;
   DMA2D_InitStruct.DMA2D_PixelPerLine = x2-x1+1;
}
/* vertical line */
else if ( x1 == x2 )
{
   DMA2D_InitStruct.DMA2D_OutputOffset = LCD_PIXEL_WIDTH - 1;
   DMA2D_InitStruct.DMA2D_NumberOfLine = y2-y1+1;
   DMA2D_InitStruct.DMA2D_PixelPerLine = 1;
}
else
{
   return UG_RESULT_FAIL;
}

if ( ltdc_work_layer == LAYER_1 )
{
   DMA2D_InitStruct.DMA2D_OutputMemoryAdd = SDRAM_BANK_ADDR + LAYER_1_OFFSET + 2*(LCD_PIXEL_WIDTH * y1 + x1);
}
else
{
   DMA2D_InitStruct.DMA2D_OutputMemoryAdd = SDRAM_BANK_ADDR + LAYER_2_OFFSET + 2*(LCD_PIXEL_WIDTH * y1 + x1);
}
DMA2D_Init(&DMA2D_InitStruct);
DMA2D_StartTransfer();
while(DMA2D_GetFlagStatus(DMA2D_FLAG_TC) == RESET){};
return UG_RESULT_OK;
}

/* Hardware accelerator for UG_FillFrame (Platform: STM32F4x9) */
UG_RESULT _HW_FillFrame( UG_S16 x1, UG_S16 y1, UG_S16 x2, UG_S16 y2, UG_COLOR c )
{
DMA2D_InitTypeDef    DMA2D_InitStruct;

DMA2D_DeInit();
DMA2D_InitStruct.DMA2D_Mode = DMA2D_R2M;
DMA2D_InitStruct.DMA2D_CMode = DMA2D_RGB565;
/* Convert UG_COLOR to RGB565 */
DMA2D_InitStruct.DMA2D_OutputBlue = (c>>3) & 0x1F;
DMA2D_InitStruct.DMA2D_OutputGreen = (c>>10) & 0x3F;
DMA2D_InitStruct.DMA2D_OutputRed = (c>>19) & 0x1F;
DMA2D_InitStruct.DMA2D_OutputAlpha = 0x0F;
DMA2D_InitStruct.DMA2D_OutputOffset = (LCD_PIXEL_WIDTH - (x2-x1+1));
DMA2D_InitStruct.DMA2D_NumberOfLine = y2-y1+1;
DMA2D_InitStruct.DMA2D_PixelPerLine = x2-x1+1;
if ( ltdc_work_layer == LAYER_1 )
{
   DMA2D_InitStruct.DMA2D_OutputMemoryAdd = SDRAM_BANK_ADDR + LAYER_1_OFFSET + 2*(LCD_PIXEL_WIDTH * y1 + x1);
}
else
{
   DMA2D_InitStruct.DMA2D_OutputMemoryAdd = SDRAM_BANK_ADDR + LAYER_2_OFFSET + 2*(LCD_PIXEL_WIDTH * y1 + x1);
}
DMA2D_Init(&DMA2D_InitStruct);

DMA2D_StartTransfer();
while(DMA2D_GetFlagStatus(DMA2D_FLAG_TC) == RESET){}
return UG_RESULT_OK;
}

/* Systick interrupt */
void SysTick_Handler(void)
{
if ( timer ) timer--;

if ( state == STATE_MAIN_MENU )
{
//    TP_State = IOE_TP_GetState();
//    if( TP_State->TouchDetected )
//    {
//       if ( (TP_State->X > 0) && (TP_State->X < 239 ) )
//       {
//          if ( (TP_State->Y > 0) && (TP_State->Y < 319 ) )
//          {
//             UG_TouchUpdate(TP_State->X,TP_State->Y,TOUCH_STATE_PRESSED);
//          }
//       }
//    }
//    else
//    {
//       UG_TouchUpdate(-1,-1,TOUCH_STATE_RELEASED);
//    }
}

UG_Update();
}

void led_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOG, &GPIO_InitStructure);

GPIO_ToggleBits(GPIOG,GPIO_Pin_14);
}

void systick_init( void )
{
/* Init SysTick (100Hz) */
SystemCoreClockUpdate();
if (SysTick_Config(SystemCoreClock / 100))
{
   /* Capture error */
   while (1);
}
}

/* Callback function for the main menu */
void window_1_callback( UG_MESSAGE* msg )
{
if ( msg->type == MSG_TYPE_OBJECT )
{
   if ( msg->id == OBJ_TYPE_BUTTON )
   {
      switch( msg->sub_id )
      {
         case BTN_ID_0: /* Toggle green LED */
         {
            TOGGLE_GREEN_LED;
            break;
         }
         case BTN_ID_1: /* Toggle red LED */
         {
            TOGGLE_RED_LED;
            break;
         }
         case BTN_ID_2: /* Show ?UI info */
         {
            UG_WindowShow( &window_2 );
            break;
         }
         case BTN_ID_3: /* Toggle hardware acceleration */
         {
            if ( !hw_acc )
            {
               UG_ButtonSetForeColor( &window_1, BTN_ID_3, C_RED );
               UG_ButtonSetText( &window_1, BTN_ID_3, "HW_ACC\nOFF" );
               UG_DriverEnable( DRIVER_DRAW_LINE );
               UG_DriverEnable( DRIVER_FILL_FRAME );
            }
            else
            {
               UG_ButtonSetForeColor( &window_1, BTN_ID_3, C_BLUE );
               UG_ButtonSetText( &window_1, BTN_ID_3, "HW_ACC\nON" );
               UG_DriverDisable( DRIVER_DRAW_LINE );
               UG_DriverDisable( DRIVER_FILL_FRAME );
            }
            hw_acc = !hw_acc;
            break;
         }
         case BTN_ID_4: /* Start benchmark */
         {
            next_state = STATE_BENCHMARK_RUN;
            break;
         }
         case BTN_ID_5: /* Resize window */
         {
            static UG_U32 tog;

            if ( !tog )
            {
               UG_WindowResize( &window_1, 0, 40, 239, 319-40 );
            }
            else
            {
               UG_WindowResize( &window_1, 0, 0, 239, 319 );
            }
            tog = ! tog;
            break;
         }
      }
   }
}
}

/* Callback function for the info window */
void window_2_callback( UG_MESSAGE* msg )
{
if ( msg->type == MSG_TYPE_OBJECT )
{
   if ( msg->id == OBJ_TYPE_BUTTON )
   {
      switch( msg->sub_id )
      {
         case BTN_ID_0:
         {
            UG_WindowHide( &window_2 );
            break;
         }
      }
   }
}
}

/* Callback function for the result window */
void window_3_callback( UG_MESSAGE* msg )
{
if ( msg->type == MSG_TYPE_OBJECT )
{
   if ( msg->id == OBJ_TYPE_BUTTON )
   {
      switch( msg->sub_id )
      {
         /* OK button */
         case BTN_ID_0:
         {
            UG_WindowShow( &window_1 );
            break;
         }
      }
   }
}
}

/* better rand() function */
UG_U32 randx( void )
{
static UG_U32 z1 = 12345, z2 = 12345, z3 = 12345, z4 = 12345;
UG_U32 b;
b  = ((z1 << 6) ^ z1) >> 13;
z1 = ((z1 & 4294967294U) << 18) ^ b;
b  = ((z2 << 2) ^ z2) >> 27;
z2 = ((z2 & 4294967288U) << 2) ^ b;
b  = ((z3 << 13) ^ z3) >> 21;
z3 = ((z3 & 4294967280U) << 7) ^ b;
b  = ((z4 << 3) ^ z4) >> 12;
z4 = ((z4 & 4294967168U) << 13) ^ b;
return (z1 ^ z2 ^ z3 ^ z4);
}