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max7219 8位点阵数码管STM32程序

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ID:577130 发表于 2019-7-3 14:21 | 显示全部楼层 |阅读模式
学习的测试项目，keil5 stm32F0 驱动max7219 8位数码管

单片机源程序如下:
  1. /* USER CODE END Header */

  3. #include "main.h"
  4. #include "MAX7219.h"

  6. SPI_HandleTypeDef hspi1;

  8. void SystemClock_Config(void);
  9. static void MX_GPIO_Init(void);
  10. static void MX_SPI1_Init(void);

  12. /**
  13.   * @brief  The application entry point.
  14.   * @retval int
  15.   */
  16. int main(void)
  17. {
  18.   HAL_Init();

  20.   SystemClock_Config();

  22.   MX_GPIO_Init();
  23.   MX_SPI1_Init();
  24.   
  25.         HAL_Delay(50);
  26.         Init_MAX7219(); //初始化

  28.         /* 点阵屏输出测试 BEGIN */
  29.         MAX7219_Write(0x01, 0x01);
  30.         MAX7219_Write(0x02, 0x04);
  31.         MAX7219_Write(0x02, 0xD7);//加入小数点
  32.         MAX7219_Write(0x03, 0x02);
  33.         MAX7219_Write(0x04, 0x07);
  34.        
  35.         MAX7219_Write(0x05, 0x09);
  36.         MAX7219_Write(0x06, 0x07);
  37.         MAX7219_Write(0x07, 0x03);       
  38.         MAX7219_Write(0x08, 0xD4);//加入小数点
  39.         //MAX7219_Write(0x08, 0x09);
  40.        
  41.         /* 点阵屏输出测试 end */
  42.        
  43.   while (1)
  44.   {
  45.     HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);
  46.                 HAL_Delay(300);
  47.                
  48.                
  49.                
  50.                 HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET);
  51.                 HAL_Delay(300);
  52.   }
  53. }

  55. /**
  56.   * @brief System Clock Configuration
  57.   * @retval None
  58.   */
  59. void SystemClock_Config(void)
  60. {
  61.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  62.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  64.   /**Initializes the CPU, AHB and APB busses clocks
  65.   */
  66.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  67.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  68.   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  69.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  70.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  71.   {
  72.     Error_Handler();
  73.   }
  74.   /**Initializes the CPU, AHB and APB busses clocks
  75.   */
  76.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  77.                               |RCC_CLOCKTYPE_PCLK1;
  78.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  79.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  80.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  82.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  83.   {
  84.     Error_Handler();
  85.   }
  86. }

  88. /**
  89.   * @brief SPI1 Initialization Function
  90.   * @param None
  91.   * @retval None
  92.   */
  93. static void MX_SPI1_Init(void)
  94. {       
  95.   hspi1.Instance = SPI1;
  96.   hspi1.Init.Mode = SPI_MODE_MASTER;
  97.   hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  98.   hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  99.   hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  100.   hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  101.   hspi1.Init.NSS = SPI_NSS_SOFT;
  102.   hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
  103.   hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  104.   hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  105.   hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  106.   hspi1.Init.CRCPolynomial = 7;
  107.   hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
  108.   hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
  109.   if (HAL_SPI_Init(&hspi1) != HAL_OK)
  110.   {
  111.     Error_Handler();
  112.   }
  113. }

  115. /**
  116.   * @brief GPIO Initialization Function
  117.   * @param None
  118.   * @retval None
  119.   */
  120. static void MX_GPIO_Init(void)
  121. {
  122.   GPIO_InitTypeDef GPIO_InitStruct = {0};

  124.   /* GPIO Ports Clock Enable */
  125.   __HAL_RCC_GPIOA_CLK_ENABLE();
  126.         __HAL_RCC_GPIOC_CLK_ENABLE();
  127.        
  128.                 /*Configure GPIO pin : PC13 */
  129.   GPIO_InitStruct.Pin = GPIO_PIN_13;
  130.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  131.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  132.         GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  133.   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  135.   /*Configure GPIO pin Output Level */
  136.   HAL_GPIO_WritePin(MAX7219_CS_GPIO_Port, MAX7219_CS_Pin, GPIO_PIN_RESET);

  138.   /*Configure GPIO pin : PC6 用于SPI1-CS*/
  139.   GPIO_InitStruct.Pin = MAX7219_CS_Pin;
  140.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  141.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  142.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  143.   HAL_GPIO_Init(MAX7219_CS_GPIO_Port, &GPIO_InitStruct);
  144.        
  145.        
  146. //        HAL_GPIO_WritePin(MAX7219_SCK_GPIO_Port, MAX7219_SCK_Pin, GPIO_PIN_RESET);
  147. //        GPIO_InitStruct.Pin = MAX7219_SCK_Pin|MAX7219_MOSI_Pin;
  148. //  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  149. //  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  150. //  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  151. }

  153. /**
  154.   * @brief  This function is executed in case of error occurrence.
  155.   * @retval None
  156.   */
  157. void Error_Handler(void)
  158. {
  159.   /* USER CODE BEGIN Error_Handler_Debug */
  160.   /* User can add his own implementation to report the HAL error return state */

  162.   /* USER CODE END Error_Handler_Debug */
  163. }

  165. #ifdef  USE_FULL_ASSERT
  166. /**
  167.   * @brief  Reports the name of the source file and the source line number
  168.   *         where the assert_param error has occurred.
  169.   * @param  file: pointer to the source file name
  170.   * @param  line: assert_param error line source number
  171.   * @retval None
  172.   */
  173. void assert_failed(char *file, uint32_t line)
  174. {
  175.   /* USER CODE BEGIN 6 */
  176.   /* User can add his own implementation to report the file name and line number,
  177.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  178.   /* USER CODE END 6 */
  179. }
  180. #endif /* USE_FULL_ASSERT */

  182. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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所有资料51hei提供下载:
SPI_MAX7219_Test.7z (2.69 MB, 下载次数: 67)


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ID:1 发表于 2019-7-4 23:42 | 显示全部楼层
本帖需要重新编辑补全电路原理图,源码,详细说明与图片即可获得100+黑币(帖子下方有编辑按钮)
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