BSP
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Outline
Includes
#include "main.h"
Private variables
JoyState
Private function prototypes
Joystick_demo()
Joystick_SetHint()
Files
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SourceVuSTM32 Libraries and SamplesBSPSrc/joystick.c
 
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/** ****************************************************************************** * @file BSP/Src/joystick.c * @author MCD Application Team * @brief This example code shows how to use the joystick feature in the * stm324x9i_eval driver ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /** @addtogroup STM32F4xx_HAL_Examples * @{ *//* ... */ /** @addtogroup BSP * @{ *//* ... */ Includes /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ static JOYState_TypeDef JoyState = JOY_NONE; Private variables /* Private function prototypes -----------------------------------------------*/ static void Joystick_SetHint(void); Private function prototypes /* Private functions ---------------------------------------------------------*/ /** * @brief Joystick demo * @param None * @retval None *//* ... */ void Joystick_demo(void) { static uint16_t xPtr = 12; static uint16_t yPtr = 92; static uint16_t old_xPtr = 12; static uint16_t old_yPtr = 92; uint8_t status = 0; Joystick_SetHint(); status = BSP_JOY_Init(JOY_MODE_GPIO); if (status != IO_OK) { BSP_LCD_SetBackColor(LCD_COLOR_WHITE); BSP_LCD_SetTextColor(LCD_COLOR_RED); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- 95, (uint8_t *)"ERROR", CENTER_MODE); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- 80, (uint8_t *)"Joystick cannot be initialized", CENTER_MODE); }if (status != IO_OK) { ... } while (1) { if (status == IO_OK) { /* Get the Joystick State */ JoyState = BSP_JOY_GetState(); switch(JoyState) { case JOY_UP: if(yPtr > 92) { yPtr--; }if (yPtr > 92) { ... } break; case JOY_UP: case JOY_DOWN: if(yPtr < (BSP_LCD_GetYSize() - 12 - 11)) { yPtr++; }if (yPtr < (BSP_LCD_GetYSize() - 12 - 11)) { ... } break; case JOY_DOWN: case JOY_LEFT: if(xPtr > 12) { xPtr--; }if (xPtr > 12) { ... } break; case JOY_LEFT: case JOY_RIGHT: if(xPtr < (BSP_LCD_GetXSize() - 8 - 11)) { xPtr++; }if (xPtr < (BSP_LCD_GetXSize() - 8 - 11)) { ... } break; case JOY_RIGHT: default: break; default }switch (JoyState) { ... } BSP_LCD_SetBackColor(LCD_COLOR_WHITE); BSP_LCD_SetTextColor(LCD_COLOR_BLUE); if(JoyState == JOY_SEL) { BSP_LCD_SetTextColor(LCD_COLOR_RED); BSP_LCD_DisplayChar(xPtr, yPtr, 'X'); }if (JoyState == JOY_SEL) { ... } else if(JoyState == JOY_NONE) { BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_DisplayChar(xPtr, yPtr, 'X'); }else if (JoyState == JOY_NONE) { ... } else { BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_DisplayChar(old_xPtr, old_yPtr, 'X'); BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_DisplayChar(xPtr, yPtr, 'X'); old_xPtr = xPtr; old_yPtr = yPtr; }else { ... } }if (status == IO_OK) { ... } if(CheckForUserInput() > 0) { return; }if (CheckForUserInput() > 0) { ... } HAL_Delay(5); }while (1) { ... } }{ ... } /** * @brief Display joystick demo hint * @param None * @retval None *//* ... */ static void Joystick_SetHint(void) { /* Clear the LCD */ BSP_LCD_Clear(LCD_COLOR_WHITE); /* Set Joystick Demo description */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetFont(&Font24); BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"Joystick", CENTER_MODE); BSP_LCD_SetFont(&Font12); BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"Please use the joystick to", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"move the pointer inside the", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 60, (uint8_t *)"rectangle", CENTER_MODE); /* Set the LCD Text Color */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 100); BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 102); }{ ... } /** * @} *//* ... */ /** * @} *//* ... */
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