sppport stm32h743-atk-apollo pcf8574 and uart2(485)

bsp/stm32/stm32h743-atk-apollo/README.md

@@ -41,10 +41,11 @@
 | **板载外设**      | **支持情况** | **备注**                              |
 | :----------------- | :----------: | :------------------------------------- |
 | USB 转串口        |     支持     |                                       |
+| COM2        |     支持     |                                       |
 | QSPI Flash        |     支持     |                                       |
 | 以太网            |   暂不支持   |                                       |
 | SD卡              |   暂不支持   |                                       |
-| CAN               |   暂不支持   |                                       |
+| CAN-FD             |   暂不支持   |                                       |
 | SDRAM             |     支持     |                                       |
 | LCD               |     支持     |                                       |
 | MPU9250六轴传感器 |   暂不支持   |                                       |
@@ -52,7 +53,7 @@
 | GPIO              |     支持     | PA0, PA1... PK15 ---> PIN: 0, 1...176 |
 | UART              |     支持     |                                       |
 | SPI               |   支持   | SPI2 |
-| I2C               |   暂不支持   |                                       |
+| I2C               |   支持   | PCF8574 |
 | SDIO              |   暂不支持   |                                       |
 | RTC               |     支持     |                                       |
 | PWM               |   暂不支持   |                                       |

bsp/stm32/stm32h743-atk-apollo/board/CubeMX_Config/CubeMX_Config.ioc

@@ -26,6 +26,7 @@ Mcu.IP1=DEBUG
 Mcu.IP10=SPI2
 Mcu.IP11=SYS
 Mcu.IP12=USART1
+Mcu.IP13=USART2
 Mcu.IP2=DMA2D
 Mcu.IP3=FMC
 Mcu.IP4=IWDG1
@@ -34,7 +35,7 @@ Mcu.IP6=NVIC
 Mcu.IP7=QUADSPI
 Mcu.IP8=RCC
 Mcu.IP9=RTC
-Mcu.IPNb=13
+Mcu.IPNb=14
 Mcu.Name=STM32H743IITx
 Mcu.Package=LQFP176
 Mcu.Pin0=PC13
@@ -51,74 +52,76 @@ Mcu.Pin18=PC0
 Mcu.Pin19=PC2_C
 Mcu.Pin2=PC15-OSC32_OUT (OSC32_OUT)
 Mcu.Pin20=PC3_C
-Mcu.Pin21=PB2
-Mcu.Pin22=PF11
-Mcu.Pin23=PF12
-Mcu.Pin24=PF13
-Mcu.Pin25=PF14
-Mcu.Pin26=PF15
-Mcu.Pin27=PG0
-Mcu.Pin28=PG1
-Mcu.Pin29=PE7
+Mcu.Pin21=PA2
+Mcu.Pin22=PA3
+Mcu.Pin23=PB2
+Mcu.Pin24=PF11
+Mcu.Pin25=PF12
+Mcu.Pin26=PF13
+Mcu.Pin27=PF14
+Mcu.Pin28=PF15
+Mcu.Pin29=PG0
 Mcu.Pin3=PI9
-Mcu.Pin30=PE8
-Mcu.Pin31=PE9
-Mcu.Pin32=PE10
-Mcu.Pin33=PE11
-Mcu.Pin34=PE12
-Mcu.Pin35=PE13
-Mcu.Pin36=PE14
-Mcu.Pin37=PE15
-Mcu.Pin38=PH9
-Mcu.Pin39=PH10
+Mcu.Pin30=PG1
+Mcu.Pin31=PE7
+Mcu.Pin32=PE8
+Mcu.Pin33=PE9
+Mcu.Pin34=PE10
+Mcu.Pin35=PE11
+Mcu.Pin36=PE12
+Mcu.Pin37=PE13
+Mcu.Pin38=PE14
+Mcu.Pin39=PE15
 Mcu.Pin4=PI10
-Mcu.Pin40=PH11
-Mcu.Pin41=PH12
-Mcu.Pin42=PB13
-Mcu.Pin43=PB14
-Mcu.Pin44=PB15
-Mcu.Pin45=PD8
-Mcu.Pin46=PD9
-Mcu.Pin47=PD10
-Mcu.Pin48=PD14
-Mcu.Pin49=PD15
+Mcu.Pin40=PH9
+Mcu.Pin41=PH10
+Mcu.Pin42=PH11
+Mcu.Pin43=PH12
+Mcu.Pin44=PB13
+Mcu.Pin45=PB14
+Mcu.Pin46=PB15
+Mcu.Pin47=PD8
+Mcu.Pin48=PD9
+Mcu.Pin49=PD10
 Mcu.Pin5=PF0
-Mcu.Pin50=PG2
-Mcu.Pin51=PG4
-Mcu.Pin52=PG5
-Mcu.Pin53=PG6
-Mcu.Pin54=PG7
-Mcu.Pin55=PG8
-Mcu.Pin56=PA9
-Mcu.Pin57=PA10
-Mcu.Pin58=PA13 (JTMS/SWDIO)
-Mcu.Pin59=PH13
+Mcu.Pin50=PD14
+Mcu.Pin51=PD15
+Mcu.Pin52=PG2
+Mcu.Pin53=PG4
+Mcu.Pin54=PG5
+Mcu.Pin55=PG6
+Mcu.Pin56=PG7
+Mcu.Pin57=PG8
+Mcu.Pin58=PA9
+Mcu.Pin59=PA10
 Mcu.Pin6=PF1
-Mcu.Pin60=PH14
-Mcu.Pin61=PH15
-Mcu.Pin62=PI0
-Mcu.Pin63=PI1
-Mcu.Pin64=PI2
-Mcu.Pin65=PA14 (JTCK/SWCLK)
-Mcu.Pin66=PD0
-Mcu.Pin67=PD1
-Mcu.Pin68=PG11
-Mcu.Pin69=PG15
+Mcu.Pin60=PA13 (JTMS/SWDIO)
+Mcu.Pin61=PH13
+Mcu.Pin62=PH14
+Mcu.Pin63=PH15
+Mcu.Pin64=PI0
+Mcu.Pin65=PI1
+Mcu.Pin66=PI2
+Mcu.Pin67=PA14 (JTCK/SWCLK)
+Mcu.Pin68=PD0
+Mcu.Pin69=PD1
 Mcu.Pin7=PF2
-Mcu.Pin70=PB6
-Mcu.Pin71=PE0
-Mcu.Pin72=PE1
-Mcu.Pin73=PI4
-Mcu.Pin74=PI5
-Mcu.Pin75=PI6
-Mcu.Pin76=PI7
-Mcu.Pin77=VP_DMA2D_VS_DMA2D
-Mcu.Pin78=VP_IWDG1_VS_IWDG
-Mcu.Pin79=VP_RTC_VS_RTC_Activate
+Mcu.Pin70=PG11
+Mcu.Pin71=PG15
+Mcu.Pin72=PB6
+Mcu.Pin73=PE0
+Mcu.Pin74=PE1
+Mcu.Pin75=PI4
+Mcu.Pin76=PI5
+Mcu.Pin77=PI6
+Mcu.Pin78=PI7
+Mcu.Pin79=VP_DMA2D_VS_DMA2D
 Mcu.Pin8=PF3
-Mcu.Pin80=VP_SYS_VS_Systick
+Mcu.Pin80=VP_IWDG1_VS_IWDG
+Mcu.Pin81=VP_RTC_VS_RTC_Activate
+Mcu.Pin82=VP_SYS_VS_Systick
 Mcu.Pin9=PF4
-Mcu.PinsNb=81
+Mcu.PinsNb=83
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32H743IITx
@@ -126,6 +129,7 @@ MxCube.Version=5.3.0
 MxDb.Version=DB.5.0.30
 NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.ForceEnableDMAVector=true
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false
@@ -134,6 +138,7 @@ NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
 NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.SysTick_IRQn=true\:0\:0\:false\:false\:true\:false\:true
 NVIC.USART1_IRQn=true\:0\:0\:false\:false\:true\:true\:true
+NVIC.USART2_IRQn=true\:0\:0\:false\:false\:true\:true\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 PA10.Locked=true
 PA10.Mode=Asynchronous
@@ -142,6 +147,10 @@ PA13\ (JTMS/SWDIO).Mode=Serial_Wire
 PA13\ (JTMS/SWDIO).Signal=DEBUG_JTMS-SWDIO
 PA14\ (JTCK/SWCLK).Mode=Serial_Wire
 PA14\ (JTCK/SWCLK).Signal=DEBUG_JTCK-SWCLK
+PA2.Mode=Asynchronous
+PA2.Signal=USART2_TX
+PA3.Mode=Asynchronous
+PA3.Signal=USART2_RX
 PA9.Locked=true
 PA9.Mode=Asynchronous
 PA9.Signal=USART1_TX
@@ -301,7 +310,7 @@ PI7.Signal=LTDC_B7
 PI9.Mode=RGB565
 PI9.Signal=LTDC_VSYNC
 PinOutPanel.RotationAngle=0
-ProjectManager.AskForMigrate=true
+ProjectManager.AskForMigrate=false
 ProjectManager.BackupPrevious=false
 ProjectManager.CompilerOptimize=6
 ProjectManager.ComputerToolchain=false
@@ -327,7 +336,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=MDK-ARM V5
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_CORTEX_M7_Init-CORTEX_M7-false-HAL-true,4-MX_USART1_UART_Init-USART1-false-HAL-true,5-MX_FMC_Init-FMC-false-HAL-true,6-MX_DMA2D_Init-DMA2D-false-HAL-true,7-MX_LTDC_Init-LTDC-false-HAL-true,8-MX_RTC_Init-RTC-false-HAL-true,9-MX_IWDG1_Init-IWDG1-false-HAL-true,10-MX_QUADSPI_Init-QUADSPI-false-HAL-true,11-MX_SPI2_Init-SPI2-false-HAL-true
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_CORTEX_M7_Init-CORTEX_M7-false-HAL-true,4-MX_USART1_UART_Init-USART1-false-HAL-true,5-MX_FMC_Init-FMC-false-HAL-true,6-MX_DMA2D_Init-DMA2D-false-HAL-true,7-MX_LTDC_Init-LTDC-false-HAL-true,8-MX_RTC_Init-RTC-false-HAL-true,9-MX_IWDG1_Init-IWDG1-false-HAL-true,10-MX_QUADSPI_Init-QUADSPI-false-HAL-true,11-MX_SPI2_Init-SPI2-false-HAL-true,12-MX_USART2_UART_Init-USART2-false-HAL-true
 RCC.ADCFreq_Value=50390625
 RCC.AHB12Freq_Value=200000000
 RCC.AHB4Freq_Value=200000000
@@ -493,6 +502,8 @@ SPI2.Mode=SPI_MODE_MASTER
 SPI2.VirtualType=VM_MASTER
 USART1.IPParameters=VirtualMode-Asynchronous
 USART1.VirtualMode-Asynchronous=VM_ASYNC
+USART2.IPParameters=VirtualMode-Asynchronous
+USART2.VirtualMode-Asynchronous=VM_ASYNC
 VP_DMA2D_VS_DMA2D.Mode=DMA2D_Activate
 VP_DMA2D_VS_DMA2D.Signal=DMA2D_VS_DMA2D
 VP_IWDG1_VS_IWDG.Mode=IWDG_Activate

bsp/stm32/stm32h743-atk-apollo/board/CubeMX_Config/Inc/stm32h7xx_hal_conf.h

@@ -151,7 +151,7 @@
 #define  VDD_VALUE                    ((uint32_t)3300U) /*!< Value of VDD in mv */
 #define  TICK_INT_PRIORITY            ((uint32_t)0U) /*!< tick interrupt priority */
 #define  USE_RTOS                     0U
-#define  USE_SD_TRANSCEIVER           1U               /*!< use uSD Transceiver */
+#define  USE_SD_TRANSCEIVER           0U               /*!< use uSD Transceiver */
 
 #define  USE_HAL_ADC_REGISTER_CALLBACKS     0U /* ADC register callback disabled     */
 #define  USE_HAL_CEC_REGISTER_CALLBACKS     0U /* CEC register callback disabled     */

bsp/stm32/stm32h743-atk-apollo/board/CubeMX_Config/Inc/stm32h7xx_it.h

@@ -72,6 +72,7 @@ void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
 void USART1_IRQHandler(void);
+void USART2_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */

bsp/stm32/stm32h743-atk-apollo/board/CubeMX_Config/Src/main.c

@@ -76,6 +76,7 @@ RTC_HandleTypeDef hrtc;
 SPI_HandleTypeDef hspi2;
 
 UART_HandleTypeDef huart1;
+UART_HandleTypeDef huart2;
 
 SDRAM_HandleTypeDef hsdram1;
 
@@ -94,6 +95,7 @@ static void MX_RTC_Init(void);
 static void MX_IWDG1_Init(void);
 static void MX_QUADSPI_Init(void);
 static void MX_SPI2_Init(void);
+static void MX_USART2_UART_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -146,6 +148,7 @@ int main(void)
   MX_IWDG1_Init();
   MX_QUADSPI_Init();
   MX_SPI2_Init();
+  MX_USART2_UART_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */
@@ -225,8 +228,9 @@ void SystemClock_Config(void)
     Error_Handler();
   }
   PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_LTDC
-                              |RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_SPI2
-                              |RCC_PERIPHCLK_QSPI|RCC_PERIPHCLK_FMC;
+                              |RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_USART1
+                              |RCC_PERIPHCLK_SPI2|RCC_PERIPHCLK_QSPI
+                              |RCC_PERIPHCLK_FMC;
   PeriphClkInitStruct.PLL3.PLL3M = 5;
   PeriphClkInitStruct.PLL3.PLL3N = 160;
   PeriphClkInitStruct.PLL3.PLL3P = 2;
@@ -238,6 +242,7 @@ void SystemClock_Config(void)
   PeriphClkInitStruct.FmcClockSelection = RCC_FMCCLKSOURCE_D1HCLK;
   PeriphClkInitStruct.QspiClockSelection = RCC_QSPICLKSOURCE_D1HCLK;
   PeriphClkInitStruct.Spi123ClockSelection = RCC_SPI123CLKSOURCE_PLL;
+  PeriphClkInitStruct.Usart234578ClockSelection = RCC_USART234578CLKSOURCE_D2PCLK1;
   PeriphClkInitStruct.Usart16ClockSelection = RCC_USART16CLKSOURCE_D2PCLK2;
   PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
@@ -558,6 +563,54 @@ static void MX_USART1_UART_Init(void)
 
 }
 
+/**
+  * @brief USART2 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_USART2_UART_Init(void)
+{
+
+  /* USER CODE BEGIN USART2_Init 0 */
+
+  /* USER CODE END USART2_Init 0 */
+
+  /* USER CODE BEGIN USART2_Init 1 */
+
+  /* USER CODE END USART2_Init 1 */
+  huart2.Instance = USART2;
+  huart2.Init.BaudRate = 115200;
+  huart2.Init.WordLength = UART_WORDLENGTH_8B;
+  huart2.Init.StopBits = UART_STOPBITS_1;
+  huart2.Init.Parity = UART_PARITY_NONE;
+  huart2.Init.Mode = UART_MODE_TX_RX;
+  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
+  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
+  huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
+  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
+  if (HAL_UART_Init(&huart2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_UARTEx_SetTxFifoThreshold(&huart2, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_UARTEx_SetRxFifoThreshold(&huart2, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_UARTEx_DisableFifoMode(&huart2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN USART2_Init 2 */
+
+  /* USER CODE END USART2_Init 2 */
+
+}
+
 /* FMC initialization function */
 static void MX_FMC_Init(void)
 {
@@ -618,11 +671,11 @@ static void MX_GPIO_Init(void)
   __HAL_RCC_GPIOI_CLK_ENABLE();
   __HAL_RCC_GPIOF_CLK_ENABLE();
   __HAL_RCC_GPIOH_CLK_ENABLE();
+  __HAL_RCC_GPIOA_CLK_ENABLE();
   __HAL_RCC_GPIOB_CLK_ENABLE();
   __HAL_RCC_GPIOG_CLK_ENABLE();
   __HAL_RCC_GPIOE_CLK_ENABLE();
   __HAL_RCC_GPIOD_CLK_ENABLE();
-  __HAL_RCC_GPIOA_CLK_ENABLE();
 
 }
 

bsp/stm32/stm32h743-atk-apollo/board/CubeMX_Config/Src/stm32h7xx_hal_msp.c

@@ -382,6 +382,7 @@ void HAL_QSPI_MspDeInit(QSPI_HandleTypeDef* hqspi)
 */
 void HAL_RTC_MspInit(RTC_HandleTypeDef* hrtc)
 {
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
   if(hrtc->Instance==RTC)
   {
   /* USER CODE BEGIN RTC_MspInit 0 */
@@ -389,6 +390,13 @@ void HAL_RTC_MspInit(RTC_HandleTypeDef* hrtc)
   /* USER CODE END RTC_MspInit 0 */
     /* Peripheral clock enable */
     __HAL_RCC_RTC_ENABLE();
+  
+    __HAL_RCC_GPIOC_CLK_ENABLE();
+    /**RTC GPIO Configuration    
+    PC13     ------> RTC_OUT_CALIB 
+    */
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
   /* USER CODE BEGIN RTC_MspInit 1 */
 
   /* USER CODE END RTC_MspInit 1 */
@@ -411,6 +419,12 @@ void HAL_RTC_MspDeInit(RTC_HandleTypeDef* hrtc)
   /* USER CODE END RTC_MspDeInit 0 */
     /* Peripheral clock disable */
     __HAL_RCC_RTC_DISABLE();
+  
+    /**RTC GPIO Configuration    
+    PC13     ------> RTC_OUT_CALIB 
+    */
+    HAL_GPIO_DeInit(GPIOC, GPIO_PIN_13);
+
   /* USER CODE BEGIN RTC_MspDeInit 1 */
 
   /* USER CODE END RTC_MspDeInit 1 */
@@ -521,6 +535,33 @@ void HAL_UART_MspInit(UART_HandleTypeDef* huart)
 
   /* USER CODE END USART1_MspInit 1 */
   }
+  else if(huart->Instance==USART2)
+  {
+  /* USER CODE BEGIN USART2_MspInit 0 */
+
+  /* USER CODE END USART2_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_USART2_CLK_ENABLE();
+  
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    /**USART2 GPIO Configuration    
+    PA2     ------> USART2_TX
+    PA3     ------> USART2_RX 
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    /* USART2 interrupt Init */
+    HAL_NVIC_SetPriority(USART2_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(USART2_IRQn);
+  /* USER CODE BEGIN USART2_MspInit 1 */
+
+  /* USER CODE END USART2_MspInit 1 */
+  }
 
 }
 
@@ -552,6 +593,26 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
 
   /* USER CODE END USART1_MspDeInit 1 */
   }
+  else if(huart->Instance==USART2)
+  {
+  /* USER CODE BEGIN USART2_MspDeInit 0 */
+
+  /* USER CODE END USART2_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_USART2_CLK_DISABLE();
+  
+    /**USART2 GPIO Configuration    
+    PA2     ------> USART2_TX
+    PA3     ------> USART2_RX 
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);
+
+    /* USART2 interrupt DeInit */
+    HAL_NVIC_DisableIRQ(USART2_IRQn);
+  /* USER CODE BEGIN USART2_MspDeInit 1 */
+
+  /* USER CODE END USART2_MspDeInit 1 */
+  }
 
 }
 

bsp/stm32/stm32h743-atk-apollo/board/CubeMX_Config/Src/stm32h7xx_it.c

@@ -72,6 +72,7 @@
 
 /* External variables --------------------------------------------------------*/
 extern UART_HandleTypeDef huart1;
+extern UART_HandleTypeDef huart2;
 /* USER CODE BEGIN EV */
 
 /* USER CODE END EV */
@@ -226,6 +227,20 @@ void USART1_IRQHandler(void)
   /* USER CODE END USART1_IRQn 1 */
 }
 
+/**
+  * @brief This function handles USART2 global interrupt.
+  */
+void USART2_IRQHandler(void)
+{
+  /* USER CODE BEGIN USART2_IRQn 0 */
+
+  /* USER CODE END USART2_IRQn 0 */
+  HAL_UART_IRQHandler(&huart2);
+  /* USER CODE BEGIN USART2_IRQn 1 */
+
+  /* USER CODE END USART2_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */

bsp/stm32/stm32h743-atk-apollo/board/Kconfig

@@ -8,7 +8,15 @@ config SOC_STM32H743II
     default y
 
 menu "Onboard Peripheral Drivers"
-    
+
+    config BSP_USING_COM2
+        bool "Enable COM2(485)"
+        select BSP_USING_UART
+        select BSP_USING_UART2
+        select BSP_USING_I2C1
+        select PKG_USING_PCF8574
+        default n
+
     config BSP_USING_SDRAM
         bool "Enable SDRAM"
         select BSP_USING_FMC
@@ -44,6 +52,10 @@ menu "On-chip Peripheral Drivers"
             config BSP_USING_UART1
                 bool "Enable UART1"
                 default y
+
+            config BSP_USING_UART2
+                bool "Enable UART2"
+                default n
         endif
 
     config BSP_USING_FMC
@@ -70,6 +82,24 @@ menu "On-chip Peripheral Drivers"
         select RT_USING_SPI
         default n
 
+    menuconfig BSP_USING_I2C1
+        bool "Enable I2C1 BUS (software simulation)"
+        default n
+        select RT_USING_I2C
+        select RT_USING_I2C_BITOPS
+        select RT_USING_PIN
+        if BSP_USING_I2C1
+            comment "Notice: PH4 --> 116; PH5 --> 117"
+            config BSP_I2C1_SCL_PIN
+                int "i2c1 scl pin number"
+                range 1 176
+                default 116
+            config BSP_I2C1_SDA_PIN
+                int "I2C1 sda pin number"
+                range 1 176
+                default 117
+        endif
+
     menuconfig BSP_USING_ONCHIP_RTC
         bool "Enable RTC"
         select RT_USING_RTC

bsp/stm32/stm32h743-atk-apollo/board/board.c

@@ -70,8 +70,9 @@ void SystemClock_Config(void)
     Error_Handler();
   }
   PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_LTDC
-                              |RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_SPI2
-                              |RCC_PERIPHCLK_QSPI|RCC_PERIPHCLK_FMC;
+                              |RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_USART1
+                              |RCC_PERIPHCLK_SPI2|RCC_PERIPHCLK_QSPI
+                              |RCC_PERIPHCLK_FMC;
   PeriphClkInitStruct.PLL3.PLL3M = 5;
   PeriphClkInitStruct.PLL3.PLL3N = 160;
   PeriphClkInitStruct.PLL3.PLL3P = 2;
@@ -83,6 +84,7 @@ void SystemClock_Config(void)
   PeriphClkInitStruct.FmcClockSelection = RCC_FMCCLKSOURCE_D1HCLK;
   PeriphClkInitStruct.QspiClockSelection = RCC_QSPICLKSOURCE_D1HCLK;
   PeriphClkInitStruct.Spi123ClockSelection = RCC_SPI123CLKSOURCE_PLL;
+  PeriphClkInitStruct.Usart234578ClockSelection = RCC_USART234578CLKSOURCE_D2PCLK1;
   PeriphClkInitStruct.Usart16ClockSelection = RCC_USART16CLKSOURCE_D2PCLK2;
   PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)