CubeMX USART2 configured RS485

- PA1,2,3
- 115200 baud
- 80MHz PCLK1

Core/Src/main.c

@@ -66,6 +66,7 @@ static void MX_TIM5_Init(void);
 static void MX_TIM2_Init(void);
 static void MX_USART3_UART_Init(void);
 static void MX_UART5_Init(void);
+static void MX_USART2_UART_Init(void);
 /* USER CODE BEGIN PFP */
 
 uint8_t Usart3_TxBufWrite(const void* src, size_t n, uint8_t start);
@@ -153,6 +154,7 @@ int main(void)
   MX_TIM2_Init();
   MX_USART3_UART_Init();
   MX_UART5_Init();
+  MX_USART2_UART_Init();
   /* USER CODE BEGIN 2 */
   init_printf(NULL, &uart_putc);
 
@@ -486,6 +488,68 @@ static void MX_UART5_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 */
+
+  LL_USART_InitTypeDef USART_InitStruct = {0};
+
+  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+  LL_RCC_SetUSARTClockSource(LL_RCC_USART2_CLKSOURCE_PCLK1);
+
+  /* Peripheral clock enable */
+  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2);
+
+  LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
+  /**USART2 GPIO Configuration
+  PA1   ------> USART2_DE
+  PA2   ------> USART2_TX
+  PA3   ------> USART2_RX
+  */
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_1|LL_GPIO_PIN_2|LL_GPIO_PIN_3;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
+  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
+  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN USART2_Init 1 */
+
+  /* USER CODE END USART2_Init 1 */
+  USART_InitStruct.PrescalerValue = LL_USART_PRESCALER_DIV1;
+  USART_InitStruct.BaudRate = 115200;
+  USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
+  USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
+  USART_InitStruct.Parity = LL_USART_PARITY_NONE;
+  USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
+  USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
+  USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
+  LL_USART_Init(USART2, &USART_InitStruct);
+  LL_USART_SetTXFIFOThreshold(USART2, LL_USART_FIFOTHRESHOLD_1_8);
+  LL_USART_SetRXFIFOThreshold(USART2, LL_USART_FIFOTHRESHOLD_1_8);
+  LL_USART_EnableDEMode(USART2);
+  LL_USART_SetDESignalPolarity(USART2, LL_USART_DE_POLARITY_HIGH);
+  LL_USART_SetDEAssertionTime(USART2, 0);
+  LL_USART_SetDEDeassertionTime(USART2, 0);
+  LL_USART_DisableFIFO(USART2);
+  LL_USART_ConfigAsyncMode(USART2);
+  LL_USART_Enable(USART2);
+  /* USER CODE BEGIN USART2_Init 2 */
+
+  /* USER CODE END USART2_Init 2 */
+
+}
+
 /**
   * @brief USART3 Initialization Function
   * @param None
@@ -650,8 +714,8 @@ static void MX_GPIO_Init(void)
   /* GPIO Ports Clock Enable */
   LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOC);
   LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOH);
-  LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);
   LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
+  LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOB);
   LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOD);
 
   /**/

DigitalAudioH533.ioc

@@ -63,7 +63,8 @@ Mcu.IP1=CORTEX_M33_NS
 Mcu.IP10=TIM2
 Mcu.IP11=TIM5
 Mcu.IP12=UART5
-Mcu.IP13=USART3
+Mcu.IP13=USART2
+Mcu.IP14=USART3
 Mcu.IP2=DEBUG
 Mcu.IP3=GPDMA1
 Mcu.IP4=ICACHE
@@ -72,34 +73,37 @@ Mcu.IP6=NVIC
 Mcu.IP7=PWR
 Mcu.IP8=RCC
 Mcu.IP9=SYS
-Mcu.IPNb=14
+Mcu.IPNb=15
 Mcu.Name=STM32H533RETx
 Mcu.Package=LQFP64
 Mcu.Pin0=PC14-OSC32_IN(OSC32_IN)
 Mcu.Pin1=PC15-OSC32_OUT(OSC32_OUT)
-Mcu.Pin10=PC12
-Mcu.Pin11=PD2
-Mcu.Pin12=PB8
-Mcu.Pin13=VP_CORTEX_M33_NS_VS_Hclk
-Mcu.Pin14=VP_GPDMA1_VS_GPDMACH0
-Mcu.Pin15=VP_GPDMA1_VS_GPDMACH1
-Mcu.Pin16=VP_ICACHE_VS_ICACHE
-Mcu.Pin17=VP_PWR_VS_SECSignals
-Mcu.Pin18=VP_PWR_VS_LPOM
-Mcu.Pin19=VP_SYS_VS_Systick
+Mcu.Pin10=PA13(JTMS/SWDIO)
+Mcu.Pin11=PA14(JTCK/SWCLK)
+Mcu.Pin12=PC11
+Mcu.Pin13=PC12
+Mcu.Pin14=PD2
+Mcu.Pin15=PB8
+Mcu.Pin16=VP_CORTEX_M33_NS_VS_Hclk
+Mcu.Pin17=VP_GPDMA1_VS_GPDMACH0
+Mcu.Pin18=VP_GPDMA1_VS_GPDMACH1
+Mcu.Pin19=VP_ICACHE_VS_ICACHE
 Mcu.Pin2=PH0-OSC_IN(PH0)
-Mcu.Pin20=VP_TIM2_VS_ClockSourceINT
-Mcu.Pin21=VP_TIM5_VS_ClockSourceINT
-Mcu.Pin22=VP_BOOTPATH_VS_BOOTPATH
-Mcu.Pin23=VP_MEMORYMAP_VS_MEMORYMAP
+Mcu.Pin20=VP_PWR_VS_SECSignals
+Mcu.Pin21=VP_PWR_VS_LPOM
+Mcu.Pin22=VP_SYS_VS_Systick
+Mcu.Pin23=VP_TIM2_VS_ClockSourceINT
+Mcu.Pin24=VP_TIM5_VS_ClockSourceINT
+Mcu.Pin25=VP_BOOTPATH_VS_BOOTPATH
+Mcu.Pin26=VP_MEMORYMAP_VS_MEMORYMAP
 Mcu.Pin3=PH1-OSC_OUT(PH1)
-Mcu.Pin4=PB1
-Mcu.Pin5=PB10
-Mcu.Pin6=PB14
-Mcu.Pin7=PA13(JTMS/SWDIO)
-Mcu.Pin8=PA14(JTCK/SWCLK)
-Mcu.Pin9=PC11
-Mcu.PinsNb=24
+Mcu.Pin4=PA1
+Mcu.Pin5=PA2
+Mcu.Pin6=PA3
+Mcu.Pin7=PB1
+Mcu.Pin8=PB10
+Mcu.Pin9=PB14
+Mcu.PinsNb=27
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32H533RETx
@@ -119,10 +123,22 @@ NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:false\:false\:false\:false
 NVIC.UART5_IRQn=true\:0\:0\:false\:false\:false\:true\:false\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
+PA1.GPIOParameters=GPIO_Speed
+PA1.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
+PA1.Mode=Hardware Flow Control (RS485)
+PA1.Signal=USART2_DE
 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.GPIOParameters=GPIO_Speed
+PA2.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
+PA2.Mode=Asynchronous
+PA2.Signal=USART2_TX
+PA3.GPIOParameters=GPIO_Speed
+PA3.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
+PA3.Mode=Asynchronous
+PA3.Signal=USART2_RX
 PB1.GPIOParameters=GPIO_Speed
 PB1.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
 PB1.Locked=true
@@ -205,7 +221,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-LL-false,2-MX_GPIO_Init-GPIO-false-LL-true,3-MX_GPDMA1_Init-GPDMA1-false-LL-true,4-MX_ICACHE_Init-ICACHE-false-LL-true,5-MX_TIM5_Init-TIM5-false-LL-true,6-MX_TIM2_Init-TIM2-false-LL-true,7-MX_USART3_UART_Init-USART3-false-LL-true,8-MX_UART5_Init-UART5-false-LL-true,0-MX_CORTEX_M33_NS_Init-CORTEX_M33_NS-false-LL-true,0-MX_PWR_Init-PWR-false-LL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-LL-false,2-MX_GPIO_Init-GPIO-false-LL-true,3-MX_GPDMA1_Init-GPDMA1-false-LL-true,4-MX_ICACHE_Init-ICACHE-false-LL-true,5-MX_TIM5_Init-TIM5-false-LL-true,6-MX_TIM2_Init-TIM2-false-LL-true,7-MX_USART3_UART_Init-USART3-false-LL-true,8-MX_UART5_Init-UART5-false-LL-true,9-MX_USART2_UART_Init-USART2-false-LL-true,0-MX_CORTEX_M33_NS_Init-CORTEX_M33_NS-false-LL-true,0-MX_PWR_Init-PWR-false-LL-true
 RCC.ADCFreq_Value=80000000
 RCC.AHBFreq_Value=80000000
 RCC.APB1Freq_Value=80000000
@@ -287,6 +303,9 @@ TIM2.IPParameters=Prescaler
 TIM2.Prescaler=39999
 TIM5.IPParameters=Prescaler
 TIM5.Prescaler=79
+USART2.IPParameters=VirtualMode-Asynchronous,VirtualMode-Hardware Flow Control (RS485)
+USART2.VirtualMode-Asynchronous=VM_ASYNC
+USART2.VirtualMode-Hardware\ Flow\ Control\ (RS485)=VM_ASYNC
 USART3.BaudRate=115200
 USART3.IPParameters=VirtualMode-Asynchronous,VirtualMode-Hardware Flow Control (RS485),BaudRate,OverSampling
 USART3.OverSampling=UART_OVERSAMPLING_16