step motor turns, minimal example

had problems in cubeMX with that, but now it seems to work

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "Drivers/RTT"]
+	path = Drivers/RTT
+	url = https://github.com/SEGGERMicro/RTT.git
+[submodule "Drivers/SystemView"]
+	path = Drivers/SystemView
+	url = https://github.com/SEGGERMicro/SystemView.git

Inc/main.h

@@ -41,7 +41,8 @@ extern "C" {
 
 /* Exported constants --------------------------------------------------------*/
 /* USER CODE BEGIN EC */
-
+#define BUFFER_SIZE 515
+extern uint8_t rxBuffer[BUFFER_SIZE];
 /* USER CODE END EC */
 
 /* Exported macro ------------------------------------------------------------*/

Makefile

@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [4.2.0-B44] date: [Thu Apr 17 14:18:12 CEST 2025] 
+# File automatically-generated by tool: [projectgenerator] version: [4.2.0-B44] date: [Thu May 01 21:37:30 CEST 2025] 
 ##########################################################################################################################
 
 # ------------------------------------------------
@@ -58,6 +58,8 @@ Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_exti.c \
 Drivers/RTT/RTT/SEGGER_RTT.c \
 Drivers/RTT/RTT/SEGGER_RTT_printf.c \
 Drivers/RTT/Syscalls/SEGGER_RTT_Syscalls_GCC.c \
+Drivers/SystemView/SYSVIEW/SEGGER_SYSVIEW.c \
+Drivers/SystemView/Sample/NoOS/Config/Cortex-M0/SEGGER_SYSVIEW_Config_NoOS_CM0.c\
 Src/system_stm32g0xx.c
 
 # ASM sources
@@ -124,7 +126,10 @@ C_INCLUDES =  \
 -IDrivers/CMSIS/Device/ST/STM32G0xx/Include \
 -IDrivers/CMSIS/Include \
 -IDrivers/RTT/Config \
--IDrivers/RTT/RTT
+-IDrivers/RTT/RTT \
+-IDrivers/SystemView/Config \
+-IDrivers/SystemView/SEGGER \
+-IDrivers/SystemView/SYSVIEW
 
 
 # compile gcc flags

Parafraktor.ioc

@@ -64,50 +64,51 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART1_UART_Init-USART1-false-HAL-true
-RCC.ADCFreq_Value=8000000
+RCC.ADCFreq_Value=64000000
-RCC.AHBFreq_Value=8000000
+RCC.AHBFreq_Value=64000000
-RCC.APBFreq_Value=8000000
+RCC.APBFreq_Value=64000000
-RCC.APBTimFreq_Value=8000000
+RCC.APBTimFreq_Value=64000000
 RCC.CECFreq_Value=32786.88524590164
-RCC.CortexFreq_Value=8000000
+RCC.CortexFreq_Value=64000000
 RCC.EXTERNAL_CLOCK_VALUE=48000
-RCC.FCLKCortexFreq_Value=8000000
+RCC.FCLKCortexFreq_Value=64000000
-RCC.FDCANFreq_Value=8000000
+RCC.FDCANFreq_Value=64000000
 RCC.FamilyName=M
-RCC.HCLKFreq_Value=8000000
+RCC.HCLKFreq_Value=64000000
 RCC.HSE_VALUE=8000000
 RCC.HSI48_VALUE=48000000
 RCC.HSI_VALUE=16000000
-RCC.I2C1Freq_Value=8000000
+RCC.I2C1Freq_Value=64000000
-RCC.I2C2Freq_Value=8000000
+RCC.I2C2Freq_Value=64000000
-RCC.I2S1Freq_Value=8000000
+RCC.I2S1Freq_Value=64000000
-RCC.I2S2Freq_Value=8000000
+RCC.I2S2Freq_Value=64000000
-RCC.IPParameters=ADCFreq_Value,AHBFreq_Value,APBFreq_Value,APBTimFreq_Value,CECFreq_Value,CortexFreq_Value,EXTERNAL_CLOCK_VALUE,FCLKCortexFreq_Value,FDCANFreq_Value,FamilyName,HCLKFreq_Value,HSE_VALUE,HSI48_VALUE,HSI_VALUE,I2C1Freq_Value,I2C2Freq_Value,I2S1Freq_Value,I2S2Freq_Value,LPTIM1Freq_Value,LPTIM2Freq_Value,LPUART1Freq_Value,LPUART2Freq_Value,LSCOPinFreq_Value,LSE_VALUE,LSI_VALUE,MCO1PinFreq_Value,MCO2PinFreq_Value,PLLPoutputFreq_Value,PLLQoutputFreq_Value,PLLRCLKFreq_Value,PLLSourceVirtual,PWRFreq_Value,SYSCLKFreq_VALUE,SYSCLKSource,TIM15Freq_Value,TIM1Freq_Value,USART1Freq_Value,USART2Freq_Value,USART3Freq_Value,USBFreq_Value,VCOInputFreq_Value,VCOOutputFreq_Value
+RCC.IPParameters=ADCFreq_Value,AHBFreq_Value,APBFreq_Value,APBTimFreq_Value,CECFreq_Value,CortexFreq_Value,EXTERNAL_CLOCK_VALUE,FCLKCortexFreq_Value,FDCANFreq_Value,FamilyName,HCLKFreq_Value,HSE_VALUE,HSI48_VALUE,HSI_VALUE,I2C1Freq_Value,I2C2Freq_Value,I2S1Freq_Value,I2S2Freq_Value,LPTIM1Freq_Value,LPTIM2Freq_Value,LPUART1Freq_Value,LPUART2Freq_Value,LSCOPinFreq_Value,LSE_VALUE,LSI_VALUE,MCO1PinFreq_Value,MCO2PinFreq_Value,PLLN,PLLPoutputFreq_Value,PLLQoutputFreq_Value,PLLRCLKFreq_Value,PLLSourceVirtual,PWRFreq_Value,SYSCLKFreq_VALUE,SYSCLKSource,TIM15Freq_Value,TIM1Freq_Value,USART1Freq_Value,USART2Freq_Value,USART3Freq_Value,USBFreq_Value,VCOInputFreq_Value,VCOOutputFreq_Value
-RCC.LPTIM1Freq_Value=8000000
+RCC.LPTIM1Freq_Value=64000000
-RCC.LPTIM2Freq_Value=8000000
+RCC.LPTIM2Freq_Value=64000000
-RCC.LPUART1Freq_Value=8000000
+RCC.LPUART1Freq_Value=64000000
-RCC.LPUART2Freq_Value=8000000
+RCC.LPUART2Freq_Value=64000000
 RCC.LSCOPinFreq_Value=32000
 RCC.LSE_VALUE=32768
 RCC.LSI_VALUE=32000
-RCC.MCO1PinFreq_Value=8000000
+RCC.MCO1PinFreq_Value=64000000
-RCC.MCO2PinFreq_Value=8000000
+RCC.MCO2PinFreq_Value=64000000
-RCC.PLLPoutputFreq_Value=32000000
+RCC.PLLN=16
-RCC.PLLQoutputFreq_Value=32000000
+RCC.PLLPoutputFreq_Value=64000000
-RCC.PLLRCLKFreq_Value=32000000
+RCC.PLLQoutputFreq_Value=64000000
+RCC.PLLRCLKFreq_Value=64000000
 RCC.PLLSourceVirtual=RCC_PLLSOURCE_HSE
-RCC.PWRFreq_Value=8000000
+RCC.PWRFreq_Value=64000000
-RCC.SYSCLKFreq_VALUE=8000000
+RCC.SYSCLKFreq_VALUE=64000000
-RCC.SYSCLKSource=RCC_SYSCLKSOURCE_HSE
+RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
-RCC.TIM15Freq_Value=8000000
+RCC.TIM15Freq_Value=64000000
-RCC.TIM1Freq_Value=8000000
+RCC.TIM1Freq_Value=64000000
-RCC.USART1Freq_Value=8000000
+RCC.USART1Freq_Value=64000000
-RCC.USART2Freq_Value=8000000
+RCC.USART2Freq_Value=64000000
-RCC.USART3Freq_Value=8000000
+RCC.USART3Freq_Value=64000000
 RCC.USBFreq_Value=48000000
 RCC.VCOInputFreq_Value=8000000
-RCC.VCOOutputFreq_Value=64000000
+RCC.VCOOutputFreq_Value=128000000
 VP_SYS_VS_DBSignals.Mode=DisableDeadBatterySignals
 VP_SYS_VS_DBSignals.Signal=SYS_VS_DBSignals
 VP_SYS_VS_Systick.Mode=SysTick

Src/main.c

@@ -18,12 +18,15 @@
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
-#include "SEGGER_RTT.h"
-#include <stdio.h>
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
-
+#include "SEGGER_SYSVIEW.h"
+#include "SEGGER_RTT.h"
+#include "stm32g0b1xx.h"
+#include "stm32g0xx_hal_cortex.h"
+#include <stdint.h>
+#include <stdio.h>
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -56,7 +59,151 @@ static void MX_GPIO_Init(void);
 
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
+#define BUFFER_SIZE 515
+uint8_t rxBuffer[BUFFER_SIZE];
+uint16_t rxBufferPos = 0;
 
+void init_UART1_it(){
+    RCC->APBENR2 |= RCC_APBENR2_USART1EN;
+    RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
+
+    GPIOC->MODER &= ~GPIO_MODER_MODE5; // Alternate function mode on RX pin
+    GPIOC->MODER |= GPIO_MODER_MODE5_1;
+    GPIOC->AFR[0] &= GPIO_AFRL_AFSEL5;
+    GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos; // AF1 -> USART1 RX
+
+    USART1->BRR = 128; // 32000000÷250000
+    USART1->CR1 = USART_CR1_RE;
+
+    USART1->CR3 |= USART_CR3_EIE; // Interrupt on BREAK (and other errors)
+    USART1->CR1 |= USART_CR1_RXNEIE_RXFNEIE; // RX Interrupt
+
+    USART1->CR1 |= USART_CR1_UE;
+
+    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(USART1_IRQn);
+}
+
+void init_UART1_dma(){
+    RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
+    RCC->APBENR2 |= RCC_APBENR2_USART1EN;
+    RCC->AHBENR |= RCC_AHBENR_DMA1EN;
+
+    GPIOC->MODER &= ~GPIO_MODER_MODE5; // Alternate function mode on RX pin
+    GPIOC->MODER |= GPIO_MODER_MODE5_1;
+    GPIOC->AFR[0] &= GPIO_AFRL_AFSEL5;
+    GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos; // AF1 -> USART1 RX
+
+    USART1->BRR = 256; // 64000000÷250000
+    USART1->CR1 = USART_CR1_RE;
+
+    USART1->CR3 |= USART_CR3_EIE; // Interrupt on BREAK (and other errors)
+    USART1->CR3 |= USART_CR3_DMAR; // DMA Receiver mode
+
+    DMA1_Channel1->CCR = (0x02 << DMA_CCR_PL_Pos) | DMA_CCR_MINC | DMA_CCR_TCIE;
+
+    DMA1_Channel1->CMAR  = ( uint32_t )&rxBuffer[0];
+    DMA1_Channel1->CPAR  = ( uint32_t )&(USART1->RDR);
+    DMA1_Channel1->CNDTR = 5;
+
+    DMAMUX1_Channel0->CCR &= ~( DMAMUX_CxCR_DMAREQ_ID );
+    DMAMUX1_Channel0->CCR |=  ( 50 << DMAMUX_CxCR_DMAREQ_ID_Pos ); // 50 -> USART1 RX
+
+    USART1->CR1 |= USART_CR1_UE;
+
+    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(USART1_IRQn);
+
+    HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
+}
+
+void Reset_DMA(void) {
+    // Disable the DMA channel
+    DMA1_Channel1->CCR &= ~DMA_CCR_EN; // Disable DMA Channel 1
+
+    // Clear the transfer complete flag
+    DMA1->IFCR |= DMA_IFCR_CTCIF1; // Clear transfer complete flag for Channel 1
+
+    // Reconfigure the DMA
+    DMA1_Channel1->CMAR = (uint32_t)rxBuffer; // Set memory address to the start of the buffer
+    DMA1_Channel1->CNDTR = BUFFER_SIZE; // Set number of data items to transfer
+
+    // Enable the DMA channel again
+    DMA1_Channel1->CCR |= DMA_CCR_EN; // Enable DMA Channel 1
+}
+
+void USART1_IRQHandler(){
+    SEGGER_SYSVIEW_RecordEnterISR();
+     if(USART1->ISR & USART_ISR_RXNE_RXFNE){
+         //SEGGER_SYSVIEW_PrintfHost("RXNE");
+         //printf("%x ", USART1->RDR);
+         rxBuffer[rxBufferPos++] = USART1->RDR;
+         if(rxBufferPos >= BUFFER_SIZE){
+             rxBufferPos = 0;
+         }
+     }
+
+     if(USART1->ISR & USART_ISR_FE){
+         //TODO read rx==0
+         USART1->ICR = USART_ICR_FECF;
+         //if(rxBufferPos != 514)
+         //    printf("FE after %d\n",rxBufferPos);
+         //rxBufferPos = 0;
+         //DMA1_Channel1->CNDTR = 1;
+         SEGGER_SYSVIEW_PrintfHost("FE");
+         Reset_DMA();
+         //DMA1_Channel1->CCR &= ~( DMA_CCR_EN );
+         //DMA1_Channel1->CNDTR = 512;
+         //DMA1_Channel1->CMAR  = ( uint32_t )&rxBuffer[0];
+         //DMA1_Channel1->CCR |= ( DMA_CCR_EN );
+         ////DMA1_Channel1->CCR |= ( DMA_CCR_EN );
+     }
+     if(USART1->ISR & USART_ISR_ORE){
+         USART1->ICR = USART_ICR_ORECF;
+         //printf("ORE\n");
+         //SEGGER_SYSVIEW_PrintfHost("ORE");
+     }
+     if(USART1->ISR & USART_ISR_NE){
+         USART1->ICR = USART_ICR_NECF;
+         printf("NE\n");
+     }
+     if(USART1->ISR & USART_ISR_UDR){
+         USART1->ICR = USART_ICR_UDRCF;
+         printf("UDR\n");
+     }
+    SEGGER_SYSVIEW_RecordExitISR();
+}
+
+void DMA1_Channel1_IRQHandler(){
+    SEGGER_SYSVIEW_RecordEnterISR();
+    if(DMA1->ISR & DMA_ISR_TCIF1){
+        DMA1->IFCR = DMA_IFCR_CTCIF1;
+    }
+    SEGGER_SYSVIEW_PrintfHost("DMA");
+    SEGGER_SYSVIEW_RecordExitISR();
+}
+
+void init_stepper(){
+    RCC->IOPENR |= RCC_IOPENR_GPIOBEN;
+    RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
+    RCC->IOPENR |= RCC_IOPENR_GPIOEEN;
+
+    // Set to output (00: Input, 01: Output, 10: Alternate function, 11: Analog)
+    // PB4 Direction
+    GPIOB->MODER &= ~(0x3 << (4 * 2)); // Clear mode bits for PB4
+    GPIOB->MODER |= (0x1 << (4 * 2));  // Set mode to output for PB4
+
+    // PC11 Enable
+    GPIOC->MODER &= ~(0x3 << (11 * 2)); // Clear mode bits for PC11
+    GPIOC->MODER |= (0x1 << (11 * 2));  // Set mode to output for PC11
+
+    // PE2 Step
+    GPIOE->MODER &= ~(0x3 << (2 * 2));   // Clear mode bits for PE2
+    GPIOE->MODER |= (0x1 << (2 * 2));    // Set mode to output for PE2
+
+    GPIOC->BSRR |= GPIO_BSRR_BS11;
+}
 /* USER CODE END 0 */
 
 /**
@@ -65,23 +212,56 @@ static void MX_GPIO_Init(void);
   */
 int main(void)
 {
+  /* USER CODE BEGIN 1 */
+  /* USER CODE END 1 */
+
   /* MCU Configuration--------------------------------------------------------*/
 
   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
   HAL_Init();
 
+  /* USER CODE BEGIN Init */
+
+  /* USER CODE END Init */
+
   /* Configure the system clock */
   SystemClock_Config();
 
-  /* Initialize all configured peripherals */
+  /* USER CODE BEGIN SysInit */
-  MX_GPIO_Init();
-
   SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
   printf("Moin!\n");
 
+  SEGGER_SYSVIEW_Conf();            /* Configure and initialize SystemView  */
+
+  /* USER CODE END SysInit */
+
+  /* Initialize all configured peripherals */
+  MX_GPIO_Init();
+  /* USER CODE BEGIN 2 */
+  init_UART1_dma(); 
+  init_stepper();
+  /* USER CODE END 2 */
+
+  /* Infinite loop */
+  /* USER CODE BEGIN WHILE */
+  //HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE);
+  uint16_t cnt = 0;
   while (1)
   {
+      printf("buf: ");
+      for(uint16_t i=0; i<10; i++)
+          printf("0x%02X ", rxBuffer[i]);
+      printf("\n");
+      SEGGER_SYSVIEW_OnIdle();
+      if(cnt++ >= 260-rxBuffer[1]){
+          cnt = 0;
+          GPIOE->ODR ^= GPIO_ODR_OD2;
       }
+    /* USER CODE END WHILE */
+
+    /* USER CODE BEGIN 3 */
+  }
+  /* USER CODE END 3 */
 }
 
 /**
@@ -102,7 +282,13 @@ void SystemClock_Config(void)
   */
   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
-  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
+  RCC_OscInitStruct.PLL.PLLN = 16;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
+  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
     Error_Handler();
@@ -112,11 +298,11 @@ void SystemClock_Config(void)
   */
   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                               |RCC_CLOCKTYPE_PCLK1;
-  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
 
-  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
   {
     Error_Handler();
   }

Src/stm32g0xx_it.c

@@ -22,6 +22,8 @@
 #include "stm32g0xx_it.h"
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
+#include "stdio.h"
+#include "SEGGER_SYSVIEW.h"
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -41,7 +43,6 @@
 
 /* Private variables ---------------------------------------------------------*/
 /* USER CODE BEGIN PV */
-
 /* USER CODE END PV */
 
 /* Private function prototypes -----------------------------------------------*/
@@ -125,11 +126,12 @@ void PendSV_Handler(void)
 void SysTick_Handler(void)
 {
   /* USER CODE BEGIN SysTick_IRQn 0 */
-
+    SEGGER_SYSVIEW_TickCnt++;
+    SEGGER_SYSVIEW_RecordEnterISR();
   /* USER CODE END SysTick_IRQn 0 */
   HAL_IncTick();
   /* USER CODE BEGIN SysTick_IRQn 1 */
-
+  SEGGER_SYSVIEW_RecordExitISR();
   /* USER CODE END SysTick_IRQn 1 */
 }
 

compile_flags.txt

@@ -9,6 +9,9 @@
 -IDrivers/CMSIS/Include
 -IDrivers/RTT/Config
 -IDrivers/RTT/RTT
+-IDrivers/SystemView/Config
+-IDrivers/SystemView/SEGGER
+-IDrivers/SystemView/SYSVIEW
 -Og
 -Wall
 -fdata-sections