main.c

/* USER CODE BEGIN Header */

/**

  ******************************************************************************

  * @file           : main.c

  * @brief          : Main program body

  ******************************************************************************

  * @attention

  *

  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.

  * All rights reserved.</center></h2>

  *

  * This software component is licensed by ST under BSD 3-Clause license,

  * the "License"; You may not use this file except in compliance with the

  * License. You may obtain a copy of the License at:

  *                        opensource.org/licenses/BSD-3-Clause

  *

  ******************************************************************************

  */

/* 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 ---------------------------------------------------------*/

I2C_HandleTypeDef hi2c1;

TIM_HandleTypeDef htim2;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_I2C1_Init(void);

static void MX_TIM2_Init(void);

/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/

/* USER CODE BEGIN 0 */

  void LED_Blink(void);

  //LCD Display

  void ST7032_TransmitCommand(uint8_t cmd);

  void ST7032_TransmitData(uint8_t data);

  void ST7032_SetCursor(uint8_t col, uint8_t row);

  void ST7032_Init(void);

  uint16_t led_counter = 0;

  uint8_t buffer[2] = {0x00,0x00};

/* 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_I2C1_Init();

  MX_TIM2_Init();

  /* USER CODE BEGIN 2 */

  ST7032_Init();

  //HAL_TIM_Base_Start_IT(&htim2);

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */

        ST7032_SetCursor(0,2);

        HAL_Delay(1000);

        ST7032_TransmitData(0x06);

        HAL_Delay(1000);

        ST7032_TransmitCommand(0x5C);    //contrast

        HAL_Delay(1000);

        ST7032_TransmitCommand(0x58);    //contrast

        HAL_Delay(1000);

  }

  /* USER CODE END 3 */

}

/**

  * @brief System Clock Configuration

  * @retval None

  */

void SystemClock_Config(void)

{

  RCC_OscInitTypeDef RCC_OscInitStruct = {0};

  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Configure the main internal regulator output voltage 

  */

  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the CPU, AHB and APB busses clocks 

  */

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

  RCC_OscInitStruct.HSIState = RCC_HSI_ON;

  RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;

  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;

  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;

  RCC_OscInitStruct.PLL.PLLN = 8;

  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;

  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;

  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    Error_Handler();

  }

  /** Initializes the CPU, AHB and APB busses clocks 

  */

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

                              |RCC_CLOCKTYPE_PCLK1;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)

  {

    Error_Handler();

  }

  /** Initializes the peripherals clocks 

  */

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;

  PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;

  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)

  {

    Error_Handler();

  }

}

/**

  * @brief I2C1 Initialization Function

  * @param None

  * @retval None

  */

static void MX_I2C1_Init(void)

{

  /* USER CODE BEGIN I2C1_Init 0 */

  /* USER CODE END I2C1_Init 0 */

  /* USER CODE BEGIN I2C1_Init 1 */

  /* USER CODE END I2C1_Init 1 */

  hi2c1.Instance = I2C1;

  hi2c1.Init.Timing = 0x10707DBC;

  hi2c1.Init.OwnAddress1 = 0;

  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;

  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;

  hi2c1.Init.OwnAddress2 = 0;

  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;

  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;

  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

  if (HAL_I2C_Init(&hi2c1) != HAL_OK)

  {

    Error_Handler();

  }

  /** Configure Analogue filter 

  */

  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)

  {

    Error_Handler();

  }

  /** Configure Digital filter 

  */

  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)

  {

    Error_Handler();

  }

  /* USER CODE BEGIN I2C1_Init 2 */

  /* USER CODE END I2C1_Init 2 */

}

/**

  * @brief TIM2 Initialization Function

  * @param None

  * @retval None

  */

static void MX_TIM2_Init(void)

{

  /* USER CODE BEGIN TIM2_Init 0 */

  /* USER CODE END TIM2_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};

  TIM_MasterConfigTypeDef sMasterConfig = {0};

  /* USER CODE BEGIN TIM2_Init 1 */

  /* USER CODE END TIM2_Init 1 */

  htim2.Instance = TIM2;

  htim2.Init.Prescaler = 0;

  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;

  htim2.Init.Period = 63999;

  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;

  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)

  {

    Error_Handler();

  }

  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)

  {

    Error_Handler();

  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;

  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)

  {

    Error_Handler();

  }

  /* USER CODE BEGIN TIM2_Init 2 */

  /* USER CODE END TIM2_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(GPIOB, GPIO_PIN_0|GPIO_PIN_3|GPIO_PIN_5, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */

  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8|GPIO_PIN_15, GPIO_PIN_RESET);

  /*Configure GPIO pins : PA2 PA3 PA4 */

  GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4;

  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

  GPIO_InitStruct.Pull = GPIO_NOPULL;

  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : PB0 PB3 PB5 */

  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_3|GPIO_PIN_5;

  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

  GPIO_InitStruct.Pull = GPIO_NOPULL;

  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pins : PA8 PA15 */

  GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_15;

  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);

}

/* USER CODE BEGIN 4 */

void ST7032_TransmitCommand(uint8_t cmd)

{

  buffer[0] = 0x00;

  buffer[1] = cmd;

  HAL_I2C_Master_Transmit(&hi2c1, 0x7C, buffer, sizeof(buffer), 1);  //Senden des Control-Bytes für anschließenden Command-Befehl

}

void ST7032_TransmitData(uint8_t data)

{

  buffer[0] = 0x40;

  buffer[1] = data;

  HAL_I2C_Master_Transmit(&hi2c1, 0x7C, buffer, sizeof(buffer), 1);  //Senden des Control-Bytes für anschließenden Dateneingang

}

void ST7032_SetCursor(uint8_t line, uint8_t pos)

{

  uint8_t adr;

  if(line ==0)

  {

    adr = 0x00 + pos;

  }

  else

    adr = 0x40 + pos;

  ST7032_TransmitCommand(0x80|adr);

}

void ST7032_Init(void)

{

  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, SET);

  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, SET);

  HAL_Delay(50);

  ST7032_TransmitCommand(0x38);    //function set basic

  HAL_Delay(10);

  ST7032_TransmitCommand(0x39);    //function set extended

  HAL_Delay(10);

  ST7032_TransmitCommand(0x14);    //internal OSC Frequency adjustment

  HAL_Delay(10);

  ST7032_TransmitCommand(0x78);    //contrast

  HAL_Delay(10);

  ST7032_TransmitCommand(0x58);    //contrast icon power

  HAL_Delay(10);

  ST7032_TransmitCommand(0x6F);    //follower control

  HAL_Delay(400);

  ST7032_TransmitCommand(0x0C);    //display on

  HAL_Delay(10);

  ST7032_TransmitCommand(0x01);    //clear display

  HAL_Delay(1000);

  ST7032_TransmitCommand(0x06);    //entry mode set

  HAL_Delay(10);

  ST7032_TransmitCommand(0x02);    //home

  HAL_Delay(1200);

  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, RESET);

}

void LED_Blink(void){

  led_counter++;

  if(led_counter==1000)

  {

    led_counter = 0;

  }

}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim){

  LED_Blink();

}

/* 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 */

  /* 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,

     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* USER CODE END 6 */

}

#endif /* USE_FULL_ASSERT */

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