uart config seems good for now

dmx receiving with ftdi and qlc+ works

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: [Fri Apr 25 22:56:53 CEST 2025] 
 ##########################################################################################################################
 
 # ------------------------------------------------

Parafraktor.ioc

@@ -64,47 +64,47 @@ 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=32000000
-RCC.AHBFreq_Value=8000000
+RCC.AHBFreq_Value=32000000
-RCC.APBFreq_Value=8000000
+RCC.APBFreq_Value=32000000
-RCC.APBTimFreq_Value=8000000
+RCC.APBTimFreq_Value=32000000
 RCC.CECFreq_Value=32786.88524590164
-RCC.CortexFreq_Value=8000000
+RCC.CortexFreq_Value=32000000
 RCC.EXTERNAL_CLOCK_VALUE=48000
-RCC.FCLKCortexFreq_Value=8000000
+RCC.FCLKCortexFreq_Value=32000000
-RCC.FDCANFreq_Value=8000000
+RCC.FDCANFreq_Value=32000000
 RCC.FamilyName=M
-RCC.HCLKFreq_Value=8000000
+RCC.HCLKFreq_Value=32000000
 RCC.HSE_VALUE=8000000
 RCC.HSI48_VALUE=48000000
 RCC.HSI_VALUE=16000000
-RCC.I2C1Freq_Value=8000000
+RCC.I2C1Freq_Value=32000000
-RCC.I2C2Freq_Value=8000000
+RCC.I2C2Freq_Value=32000000
-RCC.I2S1Freq_Value=8000000
+RCC.I2S1Freq_Value=32000000
-RCC.I2S2Freq_Value=8000000
+RCC.I2S2Freq_Value=32000000
 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.LPTIM1Freq_Value=8000000
+RCC.LPTIM1Freq_Value=32000000
-RCC.LPTIM2Freq_Value=8000000
+RCC.LPTIM2Freq_Value=32000000
-RCC.LPUART1Freq_Value=8000000
+RCC.LPUART1Freq_Value=32000000
-RCC.LPUART2Freq_Value=8000000
+RCC.LPUART2Freq_Value=32000000
 RCC.LSCOPinFreq_Value=32000
 RCC.LSE_VALUE=32768
 RCC.LSI_VALUE=32000
-RCC.MCO1PinFreq_Value=8000000
+RCC.MCO1PinFreq_Value=32000000
-RCC.MCO2PinFreq_Value=8000000
+RCC.MCO2PinFreq_Value=32000000
 RCC.PLLPoutputFreq_Value=32000000
 RCC.PLLQoutputFreq_Value=32000000
 RCC.PLLRCLKFreq_Value=32000000
 RCC.PLLSourceVirtual=RCC_PLLSOURCE_HSE
-RCC.PWRFreq_Value=8000000
+RCC.PWRFreq_Value=32000000
-RCC.SYSCLKFreq_VALUE=8000000
+RCC.SYSCLKFreq_VALUE=32000000
-RCC.SYSCLKSource=RCC_SYSCLKSOURCE_HSE
+RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
-RCC.TIM15Freq_Value=8000000
+RCC.TIM15Freq_Value=32000000
-RCC.TIM1Freq_Value=8000000
+RCC.TIM1Freq_Value=32000000
-RCC.USART1Freq_Value=8000000
+RCC.USART1Freq_Value=32000000
-RCC.USART2Freq_Value=8000000
+RCC.USART2Freq_Value=32000000
-RCC.USART3Freq_Value=8000000
+RCC.USART3Freq_Value=32000000
 RCC.USBFreq_Value=48000000
 RCC.VCOInputFreq_Value=8000000
 RCC.VCOOutputFreq_Value=64000000

Src/main.c

@@ -18,12 +18,14 @@
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
-#include "SEGGER_RTT.h"
-#include <stdio.h>
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
-
+#include "SEGGER_RTT.h"
+#include "stm32g0b1xx.h"
+#include "stm32g0xx_hal_cortex.h"
+#include <stdint.h>
+#include <stdio.h>
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -56,32 +58,107 @@ 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(){
+    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;
+
+    USART1->BRR = 128; // 32000000÷250000
+    USART1->CR1 = USART_CR1_RE;
+
+    USART1->CR3 |= USART_CR3_EIE;
+    USART1->CR1 |= USART_CR1_RXNEIE_RXFNEIE;
+
+    USART1->CR1 |= USART_CR1_UE;
+
+    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(USART1_IRQn);
+}
 /* USER CODE END 0 */
 
+void USART1_IRQHandler(){
+     if(USART1->ISR & USART_ISR_RXNE_RXFNE){
+         //printf("%x ", USART1->RDR);
+         rxBuffer[rxBufferPos++] = USART1->RDR;
+         if(rxBufferPos >= BUFFER_SIZE){
+             rxBufferPos = 0;
+         }
+     }
+
+     if(USART1->ISR & USART_ISR_FE){
+         USART1->ICR = USART_ICR_FECF;
+         printf("FE after %d\n",rxBufferPos);
+         rxBufferPos = 0;
+         printf("buf: ");
+         for(uint16_t i=0; i<10; i++)
+             printf("0x%02X ", rxBuffer[i]);
+         printf("\n");
+     }
+     if(USART1->ISR & USART_ISR_ORE){
+         USART1->ICR = USART_ICR_ORECF;
+         printf("ORE\n");
+     }
+     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");
+     }
+}
+
 /**
   * @brief  The application entry point.
   * @retval int
   */
 int main(void)
 {
+  /* USER CODE BEGIN 1 */
+  SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
+  printf("Moin!\n");
+  /* 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();
 
+  /* USER CODE BEGIN SysInit */
+
+  /* USER CODE END SysInit */
+
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
+  /* USER CODE BEGIN 2 */
+  init_UART1(); 
+  /* USER CODE END 2 */
 
-  SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
+  /* Infinite loop */
-  printf("Moin!\n");
+  /* USER CODE BEGIN WHILE */
-
+  //HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE);
   while (1)
   {
+    /* USER CODE END WHILE */
+
+    /* USER CODE BEGIN 3 */
   }
+  /* USER CODE END 3 */
 }
 
 /**
@@ -102,7 +179,13 @@ 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 = 8;
+  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 +195,11 @@ 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_1) != HAL_OK)
   {
     Error_Handler();
   }

Src/stm32g0xx_it.c

@@ -22,6 +22,7 @@
 #include "stm32g0xx_it.h"
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
+#include "stdio.h"
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/