From b8802c266f4dacb13afc987da0d83c4727d2a6b5 Mon Sep 17 00:00:00 2001 From: unicod Date: Sat, 21 Feb 2026 13:58:34 +0100 Subject: [PATCH] CubeMX USART2 configured RS485 - PA1,2,3 - 115200 baud - 80MHz PCLK1 --- Core/Src/main.c | 66 ++++++++++++++++++++++++++++++++++++++++++- DigitalAudioH533.ioc | 67 ++++++++++++++++++++++++++++---------------- 2 files changed, 108 insertions(+), 25 deletions(-) diff --git a/Core/Src/main.c b/Core/Src/main.c index ecfcf04..ebcd904 100644 --- a/Core/Src/main.c +++ b/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); /**/ diff --git a/DigitalAudioH533.ioc b/DigitalAudioH533.ioc index 9b06398..506c239 100644 --- a/DigitalAudioH533.ioc +++ b/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