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
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
1 int main(void) 2 { 3 RCC_ClocksTypeDef RCC_Clocks; 4 5 /* Set the Vector Table base location at 0x08000000 */ 6 NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0000); 7 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); 8 9 /* Setup SysTick Timer for 10 msec interrupts */ 10 RCC_GetClocksFreq(&RCC_Clocks); 11 if (SysTick_Config(RCC_Clocks.SYSCLK_Frequency / 100)) 12 { 13 /* Capture error */ 14 while (1); 15 } 16 /* configure Systick priority */ 17 NVIC_SetPriority(SysTick_IRQn, 0x0B); 18 19 /* Set HW structure parameters */ 20 HWConfig_SetHardwareParams(); 21 22 23 /* If the LCD Panel has a resolution of 320x240 this command is not needed, it's set by default */ 24 /* Set_LCD_Resolution( 320, 240 ); */ 25 26 /* Initialize the LCD */ 27 GL_LCD_Init(); 28 29 GL_Clear(GL_White); 30 31 InputInterface_Init(); 32 33 ShowLoadingLogo(); 34 35 #if TOUCH_SCREEN_CAPABILITY 36 /* Check if Calibration has been done*/ 37 TS_CheckCalibration(); 38 #endif 39 40 /*Initialize cursor*/ 41 GL_Clear(White); 42 CursorInit(GL_NULL); 43 44 /* Menu Initialisation*/ 45 Show_HomeScreen(); 46 CursorShow(195, 80); 47 48 /* Infinite main loop ------------------------------------------------------*/ 49 while (1) 50 { 51 52 #if defined(USE_STM3210C_EVAL) || defined(USE_STM32100E_EVAL) 53 /* Catching touch events */ 54 if ( TS_IsCalibrationDone() == SET ) 55 #endif 56 { 57 ProcessInputData(); 58 } 59 60 /* Time out calculate for power saving mode */ 61 TimeOutCalculate(); 62 63 CatchInputEvents(); 64 } 65 }
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
1 void LCD_CtrlLinesConfig(void) 2 { 3 GPIO_InitTypeDef GPIO_InitStructure; 4 /* Enable FSMC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */ 5 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE); 6 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | 7 RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG | 8 RCC_APB2Periph_AFIO, ENABLE); 9 /* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14), 10 PD.10(D15), PD.14(D0), PD.15(D1) as alternate function push pull */ 11 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 | 12 GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_14 | 13 GPIO_Pin_15; 14 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 15 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; 16 GPIO_Init(GPIOD, &GPIO_InitStructure); 17 /* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10), 18 PE.14(D11), PE.15(D12) as alternate function push pull */ 19 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | 20 GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | 21 GPIO_Pin_15; 22 GPIO_Init(GPIOE, &GPIO_InitStructure); 23 /* Set PF.00(A0 (RS)) as alternate function push pull */ 24 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; 25 GPIO_Init(GPIOF, &GPIO_InitStructure); 26 /* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE3(LCD /CS) */ 27 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; 28 GPIO_Init(GPIOG, &GPIO_InitStructure); 29 }
12. FSMC配置
1 void LCD_FSMCConfig(void) 2 { 3 FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; 4 FSMC_NORSRAMTimingInitTypeDef p; 5 /*-- FSMC Configuration ------------------------------------------------------*/ 6 /*----------------------- SRAM Bank 4 ----------------------------------------*/ 7 /* FSMC_Bank1_NORSRAM4 configuration */ 8 p.FSMC_AddressSetupTime = 1; 9 p.FSMC_AddressHoldTime = 0; 10 p.FSMC_DataSetupTime = 2; 11 p.FSMC_BusTurnAroundDuration = 0; 12 p.FSMC_CLKDivision = 0; 13 p.FSMC_DataLatency = 0; 14 p.FSMC_AccessMode = FSMC_AccessMode_A; 15 /* Color LCD configuration ------------------------------------ 16 LCD configured as follow: 17 - Data/Address MUX = Disable 18 - Memory Type = SRAM 19 - Data Width = 16bit 20 - Write Operation = Enable 21 - Extended Mode = Enable 22 - Asynchronous Wait = Disable */ 23 FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4; 24 FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; 25 FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM; 26 FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b; 27 FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable; 28 FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable; 29 FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; 30 FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; 31 FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; 32 FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; 33 FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; 34 FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable; 35 FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; 36 FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p; 37 FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p; 38 FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); 39 /* BANK 4 (of NOR/SRAM Bank 1~4) is enabled */ 40 FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE); 41 }
13. 画按钮的函数
1 void GL_DrawButtonBMP(uint16_t maxX, uint16_t minX, uint16_t maxY, uint16_t minY, uint8_t* ptrBitmap) 2 { 3 GL_SetDisplayWindow(maxY, maxX, maxY - minY, maxX - minX); 4 GL_DrawBMP(ptrBitmap); 5 GL_SetDisplayWindow(LCD_Height - 1, LCD_Width - 1, LCD_Height, LCD_Width); 6 }
14. 总结起来，这个库其实功能简单，用起来也不复杂的。
