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[STM32WB] 【STM32WB09KE测评】-基础任务3-IIC外设驱动

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 楼主| YangTwo 发表于 2024-11-8 12:04 | 显示全部楼层 |阅读模式
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ST, STM, STM32, STM32W, ic
从STM32WB09KE的数据手册看到，片上外设包含一个I2C：

System peripherals
– 1x DMA controller with 8 channels supporting ADC, SPI, I2C, USART, LPUART, Timers
– 1x SPI with I2S interface multiplexed–
– 1x I2C (SMBus/PMBus)
– 1x LPUART (low power)
– 1x USART (ISO 7816 smartcard mode, IrDA, SPI master and modbus)
– 1x independent WDG
– 1x real time clock (RTC)
– 1x independent SysTick
– 1x 16-bit, four channels general purpose timer
– 2x 16-bit, two channels general purpose timer
– Infrared interface


从开发板原理图，在母版的CN4连接器上引出了I2C功能引脚。
I2C_SCL PB6 D15 GPIO28
I2C_SDA PB7 D14 GPIO29



因此可以用来驱动I2C接口的屏幕：
Snipaste_2024-11-08_11-58-57.png


接下来初始化I2C模块，
复制
  1. static void MX_I2C1_Init(void)
    

  2. {
    


  3. 

  4.   /* USER CODE BEGIN I2C1_Init 0 */
    


  5. 

  6.   /* USER CODE END I2C1_Init 0 */
    


  7. 

  8.   /* USER CODE BEGIN I2C1_Init 1 */
    


  9. 

  10.   /* USER CODE END I2C1_Init 1 */
    

  11.   hi2c1.Instance = I2C1;
    

  12.   hi2c1.Init.Timing = 0x00303D5B;
    

  13.   hi2c1.Init.OwnAddress1 = 0;
    

  14.   hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
    

  15.   hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
    

  16.   hi2c1.Init.OwnAddress2 = 0;
    

  17.   hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
    

  18.   hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
    

  19.   hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
    

  20.   if (HAL_I2C_Init(&hi2c1) != HAL_OK)
    

  21.   {
    

  22.     Error_Handler();
    

  23.   }
    


  24. 

  25.   /** Configure Analogue filter
    

  26.   */
    

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

  28.   {
    

  29.     Error_Handler();
    

  30.   }
    


  31. 

  32.   /** Configure Digital filter
    

  33.   */
    

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

  35.   {
    

  36.     Error_Handler();
    

  37.   }
    

  38.   /* USER CODE BEGIN I2C1_Init 2 */
    


  39. 

  40.   /* USER CODE END I2C1_Init 2 */
    


  41. 

  42. }



初始化RTC模块，
复制
  1. static void MX_RTC_Init(void)
    

  2. {
    


  3. 

  4.   /* USER CODE BEGIN RTC_Init 0 */
    


  5. 

  6.   /* USER CODE END RTC_Init 0 */
    


  7. 

  8.   RTC_TimeTypeDef sTime = {0};
    

  9.   RTC_DateTypeDef sDate = {0};
    


  10. 

  11.   /* USER CODE BEGIN RTC_Init 1 */
    


  12. 

  13.   /* USER CODE END RTC_Init 1 */
    


  14. 

  15.   /** Initialize RTC Only
    

  16.   */
    

  17.   hrtc.Instance = RTC;
    

  18.   hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
    

  19.   hrtc.Init.AsynchPrediv = 127;
    

  20.   hrtc.Init.SynchPrediv = 255;
    

  21.   hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
    

  22.   hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
    

  23.   if (HAL_RTC_Init(&hrtc) != HAL_OK)
    

  24.   {
    

  25.     Error_Handler();
    

  26.   }
    


  27. 

  28.   /* USER CODE BEGIN Check_RTC_BKUP */
    


  29. 

  30.   /* USER CODE END Check_RTC_BKUP */
    


  31. 

  32.   /** Initialize RTC and set the Time and Date
    

  33.   */
    

  34.   sTime.Hours = 0x12;
    

  35.   sTime.Minutes = 0x0;
    

  36.   sTime.Seconds = 0x0;
    

  37.   sTime.SubSeconds = 0x0;
    

  38.   sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
    

  39.   sTime.StoreOperation = RTC_STOREOPERATION_RESET;
    

  40.   if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD) != HAL_OK)
    

  41.   {
    

  42.     Error_Handler();
    

  43.   }
    

  44.   sDate.WeekDay = RTC_WEEKDAY_FRIDAY;
    

  45.   sDate.Month = RTC_MONTH_NOVEMBER;
    

  46.   sDate.Date = 0x08;
    

  47.   sDate.Year = 0x24;
    


  48. 

  49.   if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
    

  50.   {
    

  51.     Error_Handler();
    

  52.   }
    

  53.   /* USER CODE BEGIN RTC_Init 2 */
    


  54. 

  55.   /* USER CODE END RTC_Init 2 */
    


  56. 

  57. }

主程序：
复制
  1. int main(void)
    

  2. {
    


  3. 

  4.   /* USER CODE BEGIN 1 */
    


  5. 

  6.   /* USER CODE END 1 */
    


  7. 

  8.   /* MCU Configuration--------------------------------------------------------*/
    


  9. 

  10.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    

  11.   HAL_Init();
    


  12. 

  13.   /* USER CODE BEGIN Init */
    


  14. 

  15.   /* USER CODE END Init */
    


  16. 

  17.   /* Configure the system clock */
    

  18.   SystemClock_Config();
    


  19. 

  20.   /* Configure the peripherals common clocks */
    

  21.   PeriphCommonClock_Config();
    


  22. 

  23.   /* USER CODE BEGIN SysInit */
    


  24. 

  25.   /* USER CODE END SysInit */
    


  26. 

  27.   /* Initialize all configured peripherals */
    

  28.   MX_GPIO_Init();
    

  29.   MX_I2C1_Init();
    

  30.   MX_RTC_Init();
    

  31.   /* USER CODE BEGIN 2 */
    

  32.   OLED_Init();
    

  33.   OLED_Refresh();
    

  34.   HAL_Delay(500);
    

  35.   /* USER CODE END 2 */
    


  36. 

  37.   /* Initialize leds */
    

  38.   BSP_LED_Init(LED_BLUE);
    

  39.   BSP_LED_Init(LED_GREEN);
    

  40.   BSP_LED_Init(LED_RED);
    


  41. 

  42.   /* Initialize USER push-button, will be used to trigger an interrupt each time it's pressed.*/
    

  43.   BSP_PB_Init(B1, BUTTON_MODE_EXTI);
    

  44.   BSP_PB_Init(B2, BUTTON_MODE_EXTI);
    

  45.   BSP_PB_Init(B3, BUTTON_MODE_EXTI);
    


  46. 

  47.   /* Initialize COM1 port (115200, 8 bits (7-bit data + 1 stop bit), no parity */
    

  48.   BspCOMInit.BaudRate   = 115200;
    

  49.   BspCOMInit.WordLength = COM_WORDLENGTH_8B;
    

  50.   BspCOMInit.StopBits   = COM_STOPBITS_1;
    

  51.   BspCOMInit.Parity     = COM_PARITY_NONE;
    

  52.   BspCOMInit.HwFlowCtl  = COM_HWCONTROL_NONE;
    

  53.   if (BSP_COM_Init(COM1, &BspCOMInit) != BSP_ERROR_NONE)
    

  54.   {
    

  55.     Error_Handler();
    

  56.   }
    


  57. 

  58.   /* Infinite loop */
    

  59.   /* USER CODE BEGIN WHILE */
    

  60.   printf("\r\n LED, Button, COM all Init Done");
    

  61.   while (1)
    

  62.   {
    


  63. 

  64.     /* USER CODE END WHILE */
    


  65. 

  66.     /* USER CODE BEGIN 3 */
    

  67.           static uint8_t i;
    

  68.           printf("\r\n idle main loop, current date: %s, current time: %s", aShowDate, aShowTime);
    

  69.           //printf("\r\nOLED TEST MODE: CLEAR SCREEN AND REFRESH WITH 1000ms DELAY. (%d)", i++);
    

  70.           OLED_Clear();
    

  71.           OLED_ShowString(0,0,"OLED SIMPLE CLOCK",8,1);
    

  72.           OLED_ShowString(0,12,"STM32 WB09KE",8,1);
    

  73.           OLED_ShowString(12,24,"BBS.21IC ST",16,1);
    

  74.           OLED_ShowString(0,48,aShowDate,8,1);
    

  75.           OLED_ShowString(80,48,aShowTime,8,1);
    

  76.           OLED_Refresh();
    


  77. 


  78. 

  79.           RTC_CalendarShow(aShowTime, aShowDate);
    


  80. 

  81.           HAL_Delay(100);
    

  82.   }
    

  83.   /* USER CODE END 3 */
    

  84. }


烧录，最终效果：


3eebcbaa5adf42d9925fa3e2a3f5943f3493094766938966.jpg



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顽强de板子 发表于 2024-11-28 23:35 | 显示全部楼层
在开始IIC外设驱动开发之前，确保你已经完成了开发环境的搭建，包括IDE、编译器、固件库和中间件的安装
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