【经验分享】STM32的GUI库使用

[复制链接]

STMCU小助手发布时间：2022-1-20 20:51

技术帖
文章封面:
文章简介:	STM32的GUI库使用

1. 实验平台使用百为的STM32F103开发板

2. 例程目录\百为stm32开发板光盘\stm32_gui_lib\Project\Embedded_GUI_Example\EWARM

3. 直接编译遇到一个问题

Error[Pe147]: declaration is incompatible with "__nounwind __interwork __softfp unsigned int __iar_builtin_REV16(unsigned int)"
(declared at line 197 of "D:\IAR Systems\ E:\MCU\STM32\百为stm32开发板光盘\stm32_gui_lib\Libraries\CMSIS\CM3\CoreSupport\core_cm3.h 1124

复制代码

4. 解决办法如下，勾选Use CMSIS

5. 去掉 $PROJ_DIR$\..\..\..\Libraries\CMSIS\CM3\CoreSupport，编译通过。

6. 打开工程，分为GUI_HAL和底层有关的，GUI_Library是上层的鼠标，文字，图像等处理，其实看起来蛮简单的。　JoyHal.c是处理板子上面的一个方向按键，　

7. 看下主函数

int main(void)
{
RCC_ClocksTypeDef RCC_Clocks;
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
/* Setup SysTick Timer for 10 msec interrupts */
RCC_GetClocksFreq(&RCC_Clocks);
if (SysTick_Config(RCC_Clocks.SYSCLK_Frequency / 100))
{
/* Capture error */
while (1);
}
/* configure Systick priority */
NVIC_SetPriority(SysTick_IRQn, 0x0B);
/* Set HW structure parameters */
HWConfig_SetHardwareParams();
/* If the LCD Panel has a resolution of 320x240 this command is not needed, it's set by default */
/* Set_LCD_Resolution( 320, 240 ); */
/* Initialize the LCD */
GL_LCD_Init();
GL_Clear(GL_White);
InputInterface_Init();
ShowLoadingLogo();
#if TOUCH_SCREEN_CAPABILITY
/* Check if Calibration has been done*/
TS_CheckCalibration();
#endif
/*Initialize cursor*/
GL_Clear(White);
CursorInit(GL_NULL);
/* Menu Initialisation*/
Show_HomeScreen();
CursorShow(195, 80);
/* Infinite main loop ------------------------------------------------------*/
while (1)
{
#if defined(USE_STM3210C_EVAL) || defined(USE_STM32100E_EVAL)
/* Catching touch events */
if ( TS_IsCalibrationDone() == SET )
#endif
{
ProcessInputData();
}
/* Time out calculate for power saving mode */
TimeOutCalculate();
CatchInputEvents();
}
}

复制代码

8. 方向按键的原理图，程序对应的就是JoyHal.c，joystick翻译成中文就是操纵杆。

9. 看下实际效果，主要用操纵杆移动鼠标，不知道为啥触摸屏没用。可能是板子跳线帽不对。看了一下cursor.c这个文件，里面只有读操纵杆的函数，估计触摸屏本来就没用。

10. LCD接口是FSMC接口，FSMC本来是存储器的接口，也可以用来驱动LCD。

11. LCD引脚配置

void LCD_CtrlLinesConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable FSMC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |
RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG |
RCC_APB2Periph_AFIO, ENABLE);
/* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14),
PD.10(D15), PD.14(D0), PD.15(D1) as alternate function push pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_14 |
GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10),
PE.14(D11), PE.15(D12) as alternate function push pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |
GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |
GPIO_Pin_15;
GPIO_Init(GPIOE, &GPIO_InitStructure);
/* Set PF.00(A0 (RS)) as alternate function push pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIOF, &GPIO_InitStructure);
/* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE3(LCD /CS) */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_Init(GPIOG, &GPIO_InitStructure);
}

复制代码

12. FSMC配置

void LCD_FSMCConfig(void)
{
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
FSMC_NORSRAMTimingInitTypeDef p;
/*-- FSMC Configuration ------------------------------------------------------*/
/*----------------------- SRAM Bank 4 ----------------------------------------*/
/* FSMC_Bank1_NORSRAM4 configuration */
p.FSMC_AddressSetupTime = 1;
p.FSMC_AddressHoldTime = 0;
p.FSMC_DataSetupTime = 2;
p.FSMC_BusTurnAroundDuration = 0;
p.FSMC_CLKDivision = 0;
p.FSMC_DataLatency = 0;
p.FSMC_AccessMode = FSMC_AccessMode_A;
/* Color LCD configuration ------------------------------------
LCD configured as follow:
- Data/Address MUX = Disable
- Memory Type = SRAM
- Data Width = 16bit
- Write Operation = Enable
- Extended Mode = Enable
- Asynchronous Wait = Disable */
FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
/* BANK 4 (of NOR/SRAM Bank 1~4) is enabled */
FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
}

复制代码

13. 画按钮的函数

void GL_DrawButtonBMP(uint16_t maxX, uint16_t minX, uint16_t maxY, uint16_t minY, uint8_t* ptrBitmap)
{
GL_SetDisplayWindow(maxY, maxX, maxY - minY, maxX - minX);
GL_DrawBMP(ptrBitmap);
GL_SetDisplayWindow(LCD_Height - 1, LCD_Width - 1, LCD_Height, LCD_Width);
}

复制代码

14. 总结起来，这个库其实功能简单，用起来也不复杂的。