Implement Versuch4 (functional, tested)

Versuch4/Core/Inc/versuch4_write-file.h

@@ -0,0 +1,9 @@
+/*
+ * versuch4_write-file.c
+ *
+ *  Created on: Dec 1, 2025
+ *      Author: jonny
+ */
+
+void versuch4_write_file(void);
+

Versuch4/Core/Src/display.c

@@ -39,6 +39,9 @@
 #include <stdarg.h>
 #include <stdio.h>
 
+#include "FreeRTOS.h"
+#include "semphr.h"
+
 /* ToDo: Include headers for RTOS/mutex, declare mutex */
 
 extern SRAM_HandleTypeDef hsram2;
@@ -49,19 +52,21 @@ extern SRAM_HandleTypeDef hsram2;
 #define DISPLAY_ABS(X)  ((x) > 0 ? (x) : -(x))
 #define DISPLAY_LIMIT( x, min, max ) {if( x < min ) x = min; else if( x > max ) x = max; }
 
+SemaphoreHandle_t Mutex_Display = NULL;
+
 static char Display_LineBuffer[64];  // Buffer for printf
 
 // Display_Select: Called before any access to the display.
 //   Return: 0: Error, do not access the display
 //           1: OK, access the display
 uint8_t Display_Select( void ) {
-    /* ToDo: Take mutex */
+    xSemaphoreTake(Mutex_Display, portMAX_DELAY);
 	return 1; // OK
 }
 
 // Display_Deselect: Called after any access to the display.
 void Display_Deselect( void ) {
-    /* ToDo: Give mutex */
+    xSemaphoreGive(Mutex_Display);
 }
 
 /*************************************************************************************************************
@@ -813,5 +818,5 @@ void Display_Init( void ) {
 		Display_Clear_( LCD_COLOR_BLACK ); // Use variant without select/deselect to ignore OS and Mutex here!
 	}
 
-	/* ToDo: Create Mutex */
+  	Mutex_Display = xSemaphoreCreateMutex();
 }

Versuch4/Core/Src/main.c

@@ -136,10 +136,80 @@ void drawButton(bool isPressed){
 }
 
 
+
+#define BUTTON_PLUS 0
+#define BUTTON_MINUS 1
+#define BUTTON_PLAY 2
+#define BUTTON_PAUSE 3
+#define BUTTON_STOP 4
+
+// helper to create all gui buttons at startup
+void createGuiElements(){
+  printf("creating GUI elements\r\n");
+  GUI_AddButton(5, 88, "+", BUTTON_PLUS);
+  GUI_AddButton(5, 170, "-", BUTTON_MINUS);
+  GUI_AddButton(110, 5, "PLAY", BUTTON_PLAY);
+  GUI_AddButton(110, 88, "PAUSE", BUTTON_PAUSE);
+  GUI_AddButton(110, 170, "STOP", BUTTON_STOP);
+}
+
+
+// helper to update volume value on display
+uint8_t volume = 70;
+void drawVolume(){
+		      Display_Printf( 0, 40,
+		      		LCD_COLOR_WHITE, LCD_COLOR_BLACK,
+		      		&FontBig,
+		          "%03d", volume
+		      );
+}
+
+
 //==========================
 //==== Task definitions ====
 //==========================
 
+void Task9_receiveGuiEvents(void *){
+  uint8_t gui_msg = 0;
+
+  //initially draw volume
+  drawVolume();
+
+  // receive gui events
+	while(1){
+    if (xQueueReceive(GUIQueue, &gui_msg, portMAX_DELAY)){
+      printf("Received GUI event %d\n", gui_msg);
+
+      switch(gui_msg){
+        case BUTTON_PLUS:
+          if (++volume > 100) volume = 100;
+          drawVolume();
+        break;
+
+        case BUTTON_MINUS:
+          if (volume-- == 0) volume = 0;
+          drawVolume();
+          break;
+
+        case BUTTON_PLAY:
+          printf("Play\r\n");
+        break;
+
+        case BUTTON_PAUSE:
+          printf("Pause\r\n");
+        break;
+
+        case BUTTON_STOP:
+          printf("Stop\r\n");
+        break;
+      }
+    }
+		vTaskDelay(pdMS_TO_TICKS(10));
+	}
+}
+
+
+
 
 void Task0_PrintStats(void *){
   while (1)
@@ -255,6 +325,20 @@ void Task7_receiveQueueEvents(void *){
 }
 
 
+// Task for printing CPU stats via uart and display
+void Task8_printLoad(void *){
+	while(1){
+		Display_Printf( 0, 0,
+			LCD_COLOR_WHITE, LCD_COLOR_BLACK,
+			&FontBig,
+		  "%03d", Usage_GetUsage()
+		);
+
+    Usage_PrintStats();
+
+		vTaskDelay(pdMS_TO_TICKS(1000));
+	}
+}
 
 /* USER CODE END 0 */
 
@@ -296,6 +380,8 @@ int main(void)
   Usage_Init();
 
   Display_Init();
+
+  GUI_Init();
   // local variables
   uint32_t timestamp_lastCounted   = HAL_GetTick();
   uint32_t timestamp_lastTouchRead   = HAL_GetTick();
@@ -306,6 +392,8 @@ int main(void)
   int32_t xTouch, yTouch;
 
 
+  // create gui elements (+ - PLAY PAUSE...)
+  createGuiElements();
 
   /* USER CODE END 2 */
 
@@ -335,17 +423,20 @@ int main(void)
 
   /* USER CODE BEGIN RTOS_THREADS */
   /* add threads, ... */
-    xTaskCreate(Task1_blinkGreenLed,  "Task1_green-led",  256, NULL, 0, NULL);
+  //xTaskCreate(Task1_blinkGreenLed,  "Task1_green-led",  256, NULL, 0, NULL);
-  xTaskCreate(Task2_blinkBlueLed,   "Task2_blue-led",   256, NULL, 0, NULL);
+  //xTaskCreate(Task2_blinkBlueLed,   "Task2_blue-led",   256, NULL, 0, NULL);
 
-  uint32_t delay1 = 150;
+  //uint32_t delay1 = 150;
-  xTaskCreate(Task3_4_blinkRedLed,   "Task3_red-led-150", 256, (void *)&delay1, 0, NULL);
+  //xTaskCreate(Task3_4_blinkRedLed,   "Task3_red-led-150", 256, (void *)&delay1, 0, NULL);
-  uint32_t delay2 = 600;
+  //uint32_t delay2 = 600;
-  xTaskCreate(Task3_4_blinkRedLed,   "Task4_red-led-600", 256, (void *)&delay2, 0, NULL);
+  //xTaskCreate(Task3_4_blinkRedLed,   "Task4_red-led-600", 256, (void *)&delay2, 0, NULL);
 
-  xTaskCreate(Task5_readButton,         "Task5_read-button",        256, NULL, 0, NULL);
+  //xTaskCreate(Task5_readButton,         "Task5_read-button",        256, NULL, 0, NULL);
-  xTaskCreate(Task6_countButtonPresses, "Task6_countButtonPresses", 256, NULL, 0, NULL);
+  //xTaskCreate(Task6_countButtonPresses, "Task6_countButtonPresses", 256, NULL, 0, NULL);
-  xTaskCreate(Task7_receiveQueueEvents, "Task7_receiveQueueEvents", 256, NULL, 0, NULL);
+  //xTaskCreate(Task7_receiveQueueEvents, "Task7_receiveQueueEvents", 256, NULL, 0, NULL);
+
+  xTaskCreate(Task8_printLoad, "Task8_stats", 256, NULL, 0, NULL);
+  xTaskCreate(Task9_receiveGuiEvents, "Task9_GUI", 256, NULL, 0, NULL);
 
   /* USER CODE END RTOS_THREADS */
 

Versuch4/Core/Src/versuch4_write-file.c

@@ -0,0 +1,85 @@
+/*
+ * versuch4_write-file.c
+ *
+ *  Created on: Dec 1, 2025
+ *      Author: jonny
+ */
+
+#include "versuch4_write-file.h"
+#include "fatfs.h"
+
+
+void versuch4_write_file(void)
+{
+    FATFS fs;
+    FIL fp;
+    FRESULT res;
+
+    // mount fs
+    printf("1. mounting filesystem...\n");
+    res = f_mount(&fs, "/", 0);
+    if (res != FR_OK){
+        printf("Fehler beim mounten vom dateisystem\n");
+        return;
+    }
+
+    // open file
+    printf("2. opening file...\n");
+    res = f_open(&fp, "test-asd.txt", FA_CREATE_ALWAYS | FA_WRITE);
+    if (res != FR_OK)
+    {
+        printf("Fehler beim Oeffnen der Datei!\n");
+        return;
+    }
+
+    // write file
+    printf("3. writing file...\n");
+    UINT numBytesWritten = 0;
+    char buf[] = "heute ist der 02.12.2025";
+    res = f_write(&fp, buf, strlen(buf), &numBytesWritten);
+    if (res != FR_OK || numBytesWritten == 0)
+        printf("Fehler beim schreiben der datei\n");
+
+    printf("wrote %d bytes\n", numBytesWritten);
+
+    // close file
+    printf("4. closing file...\n");
+    f_close(&fp);
+
+
+    // open file
+    printf("5. opening file...\n");
+    res = f_open(&fp, "test-asd.txt", FA_READ);
+    if (res != FR_OK)
+    {
+        printf("Fehler beim Oeffnen der Datei!\n");
+        return;
+    }
+
+
+    // read file
+    printf("6. reading file...\n");
+    char bufRead[26];
+    uint8_t numBytesRead = 0;
+
+    res = f_read(&fp, bufRead, 25, &numBytesRead);
+
+    printf("read bytes: %d\n", numBytesRead);
+    bufRead[numBytesRead] = 0;
+    //printf("read text: %s\n", bufRead);
+
+    if (res == FR_OK && numBytesWritten > 0){
+        //bufRead[25] = 0;
+        printf("Gelesene Zeichen: %s\n", bufRead);
+    }
+    else
+        printf("Fehler beim lesen der Datei oder weniger als 25 Zeichen\n");
+
+
+    // close file
+    printf("4. closing file...\n");
+    f_close(&fp);
+
+
+}
+

Versuch4/USB_HOST/App/usb_host.c

@@ -24,6 +24,8 @@
 #include "usbh_core.h"
 #include "usbh_msc.h"
 
+#include "versuch4_write-file.h"
+
 /* USER CODE BEGIN Includes */
 
 /* USER CODE END Includes */
@@ -102,10 +104,13 @@ static void USBH_UserProcess  (USBH_HandleTypeDef *phost, uint8_t id)
 
   case HOST_USER_DISCONNECTION:
   Appli_state = APPLICATION_DISCONNECT;
+  printf("USB device disconnected\n\r");
   break;
 
   case HOST_USER_CLASS_ACTIVE:
   Appli_state = APPLICATION_READY;
+  printf("USB device ready\n\r");
+  versuch4_write_file();
   break;
 
   case HOST_USER_CONNECTION:

Versuch4/Versuch4.ioc

@@ -748,7 +748,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART6_UART_Init-USART6-false-HAL-true,4-MX_FMC_Init-FMC-false-HAL-true,5-MX_I2C3_Init-I2C3-false-HAL-true,0-MX_CORTEX_M7_Init-CORTEX_M7-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART6_UART_Init-USART6-false-HAL-true,4-MX_FMC_Init-FMC-false-HAL-true,5-MX_I2C3_Init-I2C3-false-HAL-true,6-MX_FATFS_Init-FATFS-false-HAL-false,7-MX_USB_HOST_Init-USB_HOST-false-HAL-false,0-MX_CORTEX_M7_Init-CORTEX_M7-false-HAL-true
 RCC.AHBFreq_Value=216000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV4
 RCC.APB1Freq_Value=54000000
@@ -766,7 +766,7 @@ RCC.I2C1Freq_Value=54000000
 RCC.I2C2Freq_Value=54000000
 RCC.I2C3Freq_Value=54000000
 RCC.I2SFreq_Value=96000000
-RCC.IPParameters=AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2CLKDivider,APB2Freq_Value,APB2TimFreq_Value,CortexFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,HSE_VALUE,HSI_VALUE,I2C1Freq_Value,I2C2Freq_Value,I2C3Freq_Value,I2SFreq_Value,LPTIM1Freq_Value,LSI_VALUE,MCO2PinFreq_Value,PLLCLKFreq_Value,PLLI2SQCLKFreq_Value,PLLI2SRCLKFreq_Value,PLLI2SRoutputFreq_Value,PLLM,PLLN,PLLQ,PLLQCLKFreq_Value,PLLQoutputFreq_Value,PLLSAIPCLKFreq_Value,PLLSAIQCLKFreq_Value,PLLSAIoutputFreq_Value,PLLSourceVirtual,RNGFreq_Value,SAI1Freq_Value,SAI2Freq_Value,SDMMC2Freq_Value,SDMMCFreq_Value,SYSCLKFreq_VALUE,SYSCLKSource,UART4Freq_Value,UART5Freq_Value,UART7Freq_Value,UART8Freq_Value,USART1Freq_Value,USART2Freq_Value,USART3Freq_Value,USART6Freq_Value,USBFreq_Value,VCOI2SOutputFreq_Value,VCOInputFreq_Value,VCOOutputFreq_Value,VCOSAIOutputFreq_Value
+RCC.IPParameters=AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2CLKDivider,APB2Freq_Value,APB2TimFreq_Value,CortexFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,HSE_VALUE,HSI_VALUE,I2C1Freq_Value,I2C2Freq_Value,I2C3Freq_Value,I2SFreq_Value,LPTIM1Freq_Value,LSI_VALUE,MCO2PinFreq_Value,PLLCLKFreq_Value,PLLI2SQCLKFreq_Value,PLLI2SRCLKFreq_Value,PLLI2SRoutputFreq_Value,PLLM,PLLN,PLLQ,PLLQCLKFreq_Value,PLLQoutputFreq_Value,PLLSAIPCLKFreq_Value,PLLSAIQCLKFreq_Value,PLLSAIoutputFreq_Value,RNGFreq_Value,SAI1Freq_Value,SAI2Freq_Value,SDMMC2Freq_Value,SDMMCFreq_Value,SYSCLKFreq_VALUE,SYSCLKSource,UART4Freq_Value,UART5Freq_Value,UART7Freq_Value,UART8Freq_Value,USART1Freq_Value,USART2Freq_Value,USART3Freq_Value,USART6Freq_Value,USBFreq_Value,VCOI2SOutputFreq_Value,VCOInputFreq_Value,VCOOutputFreq_Value,VCOSAIOutputFreq_Value
 RCC.LPTIM1Freq_Value=54000000
 RCC.LSI_VALUE=32000
 RCC.MCO2PinFreq_Value=216000000
@@ -782,7 +782,6 @@ RCC.PLLQoutputFreq_Value=48000000
 RCC.PLLSAIPCLKFreq_Value=96000000
 RCC.PLLSAIQCLKFreq_Value=96000000
 RCC.PLLSAIoutputFreq_Value=96000000
-RCC.PLLSourceVirtual=RCC_PLLSOURCE_HSE
 RCC.RNGFreq_Value=48000000
 RCC.SAI1Freq_Value=96000000
 RCC.SAI2Freq_Value=96000000