STM32CubeF0/Projects/STM32072B_EVAL/Examples/BSP/Src/joystick.c

/**
  ******************************************************************************
  * @file    BSP/Src/joystick.c
  * @author  MCD Application Team
  * @brief   This example code shows how to use the joystick feature in the 
  *          STM32072B_EVAL driver
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/** @addtogroup STM32F0xx_HAL_Examples
  * @{
  */

/** @addtogroup BSP
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
static JOYState_TypeDef JoyState = JOY_NONE;
/* Private function prototypes -----------------------------------------------*/
static void Joystick_SetHint(void);
/* 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;  

  Joystick_SetHint();
  
  BSP_JOY_Init(JOY_MODE_GPIO);
  
  while (1)
  {
    /* Get the Joystick State */
    JoyState = BSP_JOY_GetState();
    
    switch(JoyState)
    {
    case JOY_UP:
      if(yPtr > 92)
      {
        yPtr--;
      }
      break;     
    case JOY_DOWN:
        if(yPtr < (BSP_LCD_GetYSize() - 12 - 11))
      {
        yPtr++;
      }
      break;          
    case JOY_LEFT:
      if(xPtr > 12)
      {
        xPtr--;
      }
      break;         
    case JOY_RIGHT:
        if(xPtr < (BSP_LCD_GetXSize() - 8 - 11))
      {
        xPtr++;
      }
      break;                 
    default:
      break;           
    }
    
    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');
      
    }
    else if(JoyState == JOY_NONE)
    {
      BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
      BSP_LCD_DisplayChar(xPtr, yPtr, 'X');   
    }
    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;
    }
    if(CheckForUserInput() > 0)
    {
      return;
    }
    HAL_Delay(5);
  }
}

/**
  * @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 move the pointer", CENTER_MODE);
  BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"inside the rectangle, to switch to next menu", CENTER_MODE);
  BSP_LCD_DisplayStringAt(0, 60, (uint8_t *)"press Tamper push-button.", 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);
}
/**
  * @}
  */ 

/**
  * @}
  */ 
  
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/