From 4cb4bfed34bb0e593f1508f4a44838cd0915a506 Mon Sep 17 00:00:00 2001
From: Flenk008 <frenk_0_0@hotmail.com>
Date: Fri, 3 Mar 2023 23:56:10 +0100
Subject: Player movement x/y with collision map

Player can move in x and y direction via 4 buttons

Furthermore there is a tilemap included for collisions for coresponding map design
---
 GameLogic/stm32/main.c | 488 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 488 insertions(+)
 create mode 100644 GameLogic/stm32/main.c

(limited to 'GameLogic/stm32/main.c')

diff --git a/GameLogic/stm32/main.c b/GameLogic/stm32/main.c
new file mode 100644
index 0000000..97180ff
--- /dev/null
+++ b/GameLogic/stm32/main.c
@@ -0,0 +1,488 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : main.c
+  * @brief          : Main program body
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2023 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.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN PTD */
+
+/* USER CODE END PTD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+SPI_HandleTypeDef hspi1;
+
+TIM_HandleTypeDef htim3;
+
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+void SystemClock_Config(void);
+static void MX_GPIO_Init(void);
+static void MX_SPI1_Init(void);
+static void MX_TIM3_Init(void);
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/**
+  * @brief  The application entry point.
+  * @retval int
+  */
+int main(void)
+{
+  /* USER CODE BEGIN 1 */
+
+  /* USER CODE END 1 */
+
+  /* MCU Configuration--------------------------------------------------------*/
+
+  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
+  HAL_Init();
+
+  /* USER CODE BEGIN Init */
+
+  /* USER CODE END Init */
+
+  /* Configure the system clock */
+  SystemClock_Config();
+
+  /* USER CODE BEGIN SysInit */
+
+  /* USER CODE END SysInit */
+
+  /* Initialize all configured peripherals */
+  MX_GPIO_Init();
+  MX_SPI1_Init();
+  MX_TIM3_Init();
+  /* USER CODE BEGIN 2 */
+  // correct byte for led control
+  uint16_t pos_x = 310; //0b0000 0001 0011 0110
+  uint16_t pos_y = 210;
+
+  uint8_t left = 0;
+  uint8_t right = 0;
+  uint8_t up = 0;
+  uint8_t down = 0;
+
+  uint8_t tileMap[30][40] =
+  {
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,0,0,0,0,0,0,0,0,0,0 ,0,0,0,0,0,0,0,0,0,0 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 },
+		  {1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 ,1,1,1,1,1,1,1,1,1,1 }
+
+
+
+  };
+
+  int pos_x_max = 410;
+  int pos_y_max = 310;
+  int pos_x_min = 210;
+  int pos_y_min = 110;
+  uint8_t pos_x_bit[2];
+  uint8_t pos_y_bit[2];
+  uint8_t data_send[3];
+  uint8_t led1Uit =  0b00100001 ;
+  uint8_t led2Uit =  0x9D ;
+  int tileX;
+  int tileY;
+  // int to pointer
+ // uint8_t * ledTest1 = &led1Aan;
+//  uint8_t * ledTest2 = &led2Aan;
+  uint8_t * ledTest3 = &led1Uit;
+  uint8_t * ledTest4 = &led2Uit;
+
+
+
+  /* USER CODE END 2 */
+
+  /* Infinite loop */
+  /* USER CODE BEGIN WHILE */
+  while (1)
+  {
+	//  pos_x_bit[0] = 0b00000001;
+	//  pos_x_bit[1] = 0b00110110;
+
+		  pos_x_bit[1] = pos_x & 0xff;
+		  pos_x_bit[0] = (pos_x >> 8);
+
+		  pos_y_bit[1] = pos_y & 0xff;
+		  pos_y_bit[0] = (pos_y >> 8);
+
+			  tileX = pos_x / 20;
+
+
+			  tileY = pos_y / 16;
+
+
+
+	  if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_4) == 1)
+	  	 {
+			left++;
+
+	  	 }
+	  else
+	  {
+		  left = 0;
+	  }
+	 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_5) == 1)
+	  	 {
+			right++;
+	  	 }
+	  else
+	  {
+		  right = 0;
+	  }
+	 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_6) == 1)
+	  	 {
+			up++;
+	  	 }
+	  else
+	  {
+		  up = 0;
+	  }
+	 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_8) == 1)
+	  	 {
+	  		 down++;
+		 }
+		  else
+		  {
+			  down = 0;
+		  }
+
+	// if(pos_x % 8 == 0 && pos_y % 8 == 0 && tileMap[tileY][tileX] == 1)
+	// {
+
+	// }
+	// else
+	// {
+		 if(left > 10)
+		 {
+			 if(tileMap[tileY][tileX] == 1)
+			 {
+				 left = 0;
+			 }
+			 else
+			 {
+				 pos_x--;
+			 }
+			 left = 0;
+		 }
+		 if(right > 10)
+		 {
+			 if(tileMap[tileY][tileX+1] == 1)
+				 {
+				 right = 0;
+				 }
+				 else
+				 {
+					 pos_x++;
+				 }
+
+
+			 right = 0;
+		 }
+
+		 if(up > 10)
+		 {
+			 if(tileMap[tileY+1][tileX] == 1)
+				 {
+				 up = 0;
+				 }
+				 else
+				 {
+					 pos_y++;
+				 }
+			 	 up = 0;
+
+
+
+		 }
+		 if(down > 10)
+		 {
+			 if( tileMap[tileY][tileX] == 1)
+			 {
+				 down = 0;
+			 }
+			 else
+			 {
+				 pos_y--;
+			 }
+
+			 down = 0;
+		 }
+	// }
+
+
+
+
+			data_send[0] = 0b00000000;
+			data_send[1] = pos_y_bit[0] ;
+			data_send[2] = pos_y_bit[1];
+			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
+			HAL_SPI_Transmit(&hspi1, data_send, 3, HAL_MAX_DELAY); //2*8 bit
+			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
+			data_send[0] = 0b01000000;
+			data_send[1] = pos_x_bit[0] ;
+			data_send[2] = pos_x_bit[1];
+			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
+			HAL_SPI_Transmit(&hspi1, data_send, 3, HAL_MAX_DELAY); //2*8 bit
+			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
+
+
+    /* USER CODE END WHILE */
+
+    /* USER CODE BEGIN 3 */
+  }
+  /* USER CODE END 3 */
+}
+
+/**
+  * @brief System Clock Configuration
+  * @retval None
+  */
+void SystemClock_Config(void)
+{
+  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+
+  /** Initializes the RCC Oscillators according to the specified parameters
+  * in the RCC_OscInitTypeDef structure.
+  */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  /** Initializes the CPU, AHB and APB buses clocks
+  */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+                              |RCC_CLOCKTYPE_PCLK1;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
+  {
+    Error_Handler();
+  }
+}
+
+/**
+  * @brief SPI1 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_SPI1_Init(void)
+{
+
+  /* USER CODE BEGIN SPI1_Init 0 */
+
+  /* USER CODE END SPI1_Init 0 */
+
+  /* USER CODE BEGIN SPI1_Init 1 */
+
+  /* USER CODE END SPI1_Init 1 */
+  /* SPI1 parameter configuration*/
+  hspi1.Instance = SPI1;
+  hspi1.Init.Mode = SPI_MODE_MASTER;
+  hspi1.Init.Direction = SPI_DIRECTION_1LINE;
+  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
+  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
+  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
+  hspi1.Init.NSS = SPI_NSS_SOFT;
+  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
+  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
+  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
+  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
+  hspi1.Init.CRCPolynomial = 7;
+  hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
+  hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
+  if (HAL_SPI_Init(&hspi1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN SPI1_Init 2 */
+
+  /* USER CODE END SPI1_Init 2 */
+
+}
+
+/**
+  * @brief TIM3 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_TIM3_Init(void)
+{
+
+  /* USER CODE BEGIN TIM3_Init 0 */
+
+  /* USER CODE END TIM3_Init 0 */
+
+  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
+  TIM_MasterConfigTypeDef sMasterConfig = {0};
+
+  /* USER CODE BEGIN TIM3_Init 1 */
+
+  /* USER CODE END TIM3_Init 1 */
+  htim3.Instance = TIM3;
+  htim3.Init.Prescaler = 7999;
+  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim3.Init.Period = 65535;
+  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
+  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM3_Init 2 */
+
+  /* USER CODE END TIM3_Init 2 */
+
+}
+
+/**
+  * @brief GPIO Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_GPIO_Init(void)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+  /* GPIO Ports Clock Enable */
+  __HAL_RCC_GPIOA_CLK_ENABLE();
+  __HAL_RCC_GPIOB_CLK_ENABLE();
+
+  /*Configure GPIO pin Output Level */
+  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
+
+  /*Configure GPIO pin : PA9 */
+  GPIO_InitStruct.Pin = GPIO_PIN_9;
+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /*Configure GPIO pins : PB4 PB5 PB6 PB8 */
+  GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_8;
+  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+}
+
+/* USER CODE BEGIN 4 */
+
+/* USER CODE END 4 */
+
+/**
+  * @brief  This function is executed in case of error occurrence.
+  * @retval None
+  */
+void Error_Handler(void)
+{
+  /* USER CODE BEGIN Error_Handler_Debug */
+  /* User can add his own implementation to report the HAL error return state */
+  __disable_irq();
+  while (1)
+  {
+  }
+  /* USER CODE END Error_Handler_Debug */
+}
+
+#ifdef  USE_FULL_ASSERT
+/**
+  * @brief  Reports the name of the source file and the source line number
+  *         where the assert_param error has occurred.
+  * @param  file: pointer to the source file name
+  * @param  line: assert_param error line source number
+  * @retval None
+  */
+void assert_failed(uint8_t *file, uint32_t line)
+{
+  /* USER CODE BEGIN 6 */
+  /* User can add his own implementation to report the file name and line number,
+     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+  /* USER CODE END 6 */
+}
+#endif /* USE_FULL_ASSERT */
-- 
cgit v1.2.3


From b82afe9a241fc61c9b4cd64676c3ed804e240ae1 Mon Sep 17 00:00:00 2001
From: Flenk008 <frenk_0_0@hotmail.com>
Date: Sat, 4 Mar 2023 00:14:50 +0100
Subject: Cleaned main.c

---
 GameLogic/stm32/main.c | 234 ++++++++++++++++++++++---------------------------
 1 file changed, 103 insertions(+), 131 deletions(-)

(limited to 'GameLogic/stm32/main.c')

diff --git a/GameLogic/stm32/main.c b/GameLogic/stm32/main.c
index 97180ff..edabde5 100644
--- a/GameLogic/stm32/main.c
+++ b/GameLogic/stm32/main.c
@@ -138,22 +138,14 @@ int main(void)
 
   };
 
-  int pos_x_max = 410;
-  int pos_y_max = 310;
-  int pos_x_min = 210;
-  int pos_y_min = 110;
   uint8_t pos_x_bit[2];
   uint8_t pos_y_bit[2];
   uint8_t data_send[3];
-  uint8_t led1Uit =  0b00100001 ;
-  uint8_t led2Uit =  0x9D ;
+
   int tileX;
   int tileY;
-  // int to pointer
- // uint8_t * ledTest1 = &led1Aan;
-//  uint8_t * ledTest2 = &led2Aan;
-  uint8_t * ledTest3 = &led1Uit;
-  uint8_t * ledTest4 = &led2Uit;
+
+
 
 
 
@@ -163,134 +155,114 @@ int main(void)
   /* USER CODE BEGIN WHILE */
   while (1)
   {
-	//  pos_x_bit[0] = 0b00000001;
-	//  pos_x_bit[1] = 0b00110110;
-
-		  pos_x_bit[1] = pos_x & 0xff;
-		  pos_x_bit[0] = (pos_x >> 8);
 
-		  pos_y_bit[1] = pos_y & 0xff;
-		  pos_y_bit[0] = (pos_y >> 8);
+		//shift int into 2 8bit u_int
+		pos_x_bit[1] = pos_x & 0xff;
+		pos_x_bit[0] = (pos_x >> 8);
 
-			  tileX = pos_x / 20;
+		pos_y_bit[1] = pos_y & 0xff;
+		pos_y_bit[0] = (pos_y >> 8);
 
+		// simplify coor for tilemap
+		tileX = pos_x / 20;
+		tileY = pos_y / 16;
 
-			  tileY = pos_y / 16;
 
-
-
-	  if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_4) == 1)
-	  	 {
+		//read buttons 4 times
+		if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_4) == 1)
+		{
 			left++;
-
-	  	 }
-	  else
-	  {
-		  left = 0;
-	  }
-	 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_5) == 1)
-	  	 {
-			right++;
-	  	 }
-	  else
-	  {
-		  right = 0;
-	  }
-	 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_6) == 1)
-	  	 {
-			up++;
-	  	 }
-	  else
-	  {
-		  up = 0;
-	  }
-	 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_8) == 1)
-	  	 {
-	  		 down++;
-		 }
-		  else
-		  {
-			  down = 0;
-		  }
-
-	// if(pos_x % 8 == 0 && pos_y % 8 == 0 && tileMap[tileY][tileX] == 1)
-	// {
-
-	// }
-	// else
-	// {
-		 if(left > 10)
-		 {
-			 if(tileMap[tileY][tileX] == 1)
-			 {
-				 left = 0;
-			 }
-			 else
-			 {
-				 pos_x--;
-			 }
-			 left = 0;
-		 }
-		 if(right > 10)
-		 {
-			 if(tileMap[tileY][tileX+1] == 1)
-				 {
-				 right = 0;
-				 }
-				 else
-				 {
-					 pos_x++;
-				 }
-
-
-			 right = 0;
-		 }
-
-		 if(up > 10)
-		 {
-			 if(tileMap[tileY+1][tileX] == 1)
-				 {
-				 up = 0;
-				 }
-				 else
-				 {
-					 pos_y++;
-				 }
-			 	 up = 0;
-
-
-
-		 }
-		 if(down > 10)
+		}
+		else
+		{
+			left = 0;
+		}
+		if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_5) == 1)
 		 {
-			 if( tileMap[tileY][tileX] == 1)
-			 {
-				 down = 0;
-			 }
-			 else
-			 {
-				 pos_y--;
-			 }
-
-			 down = 0;
+			right++;
 		 }
-	// }
-
-
-
-
-			data_send[0] = 0b00000000;
-			data_send[1] = pos_y_bit[0] ;
-			data_send[2] = pos_y_bit[1];
-			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
-			HAL_SPI_Transmit(&hspi1, data_send, 3, HAL_MAX_DELAY); //2*8 bit
-			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
-			data_send[0] = 0b01000000;
-			data_send[1] = pos_x_bit[0] ;
-			data_send[2] = pos_x_bit[1];
-			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
-			HAL_SPI_Transmit(&hspi1, data_send, 3, HAL_MAX_DELAY); //2*8 bit
-			HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
+		else
+		{
+			right = 0;
+		}
+		if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_6) == 1)
+		{
+			up++;
+		}
+		else
+		{
+			up = 0;
+		}
+		if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_8) == 1)
+		{
+			down++;
+		}
+		else
+		{
+			down = 0;
+		}
+		// compare position x/y with tilemap for collision
+		if(left > 10)
+		{
+			if(tileMap[tileY][tileX] == 1)
+			{
+				left = 0;
+			}
+			else
+			{
+				pos_x--;
+			}
+			left = 0;
+		}
+		if(right > 10)
+		{
+			if(tileMap[tileY][tileX+1] == 1)
+			{
+				right = 0;
+			}
+			else
+			{
+				pos_x++;
+			}
+			right = 0;
+		}
+		if(up > 10)
+		{
+			if(tileMap[tileY+1][tileX] == 1)
+			{
+				up = 0;
+			}
+			else
+			{
+				pos_y++;
+			}
+		up = 0;
+		}
+		if(down > 10)
+		{
+			if( tileMap[tileY][tileX] == 1)
+			{
+				down = 0;
+			}
+			else
+			{
+				pos_y--;
+			}
+			down = 0;
+		}
+		// send data via SPI
+		data_send[0] = 0b00000000; // first byte is address
+		data_send[1] = pos_y_bit[0] ;
+		data_send[2] = pos_y_bit[1];
+		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
+		HAL_SPI_Transmit(&hspi1, data_send, 3, HAL_MAX_DELAY); //3*8 bit
+		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
+		data_send[0] = 0b01000000; // first byte is address
+		data_send[1] = pos_x_bit[0] ;
+		data_send[2] = pos_x_bit[1];
+		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_RESET);
+		HAL_SPI_Transmit(&hspi1, data_send, 3, HAL_MAX_DELAY); //3*8 bit
+		HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
 
 
     /* USER CODE END WHILE */
-- 
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