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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
* stm324xg_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
* @{
*/
/* 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;
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);
}
while (1)
{
if (status == IO_OK)
{
/* 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", 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);
}
/**
* @}
*/
/**
* @}
*/