sync

buzzer_tool/config.yaml

@@ -2,3 +2,4 @@
 serial:
   port: "COM15"
   baudrate: 112500
+  timeout: 20

firmware/src/protocol.c

@@ -208,6 +208,7 @@ void execute_current_command(void)
         }
         else
         {
+            usb_flush_rx();
             send_error(rc);
         }
         break;
@@ -222,6 +223,7 @@ protocol_state_t waiting_for_command(uint8_t byte)
 {
     if (byte < 'a' || byte > 'z')
     {
+        LOG_DBG("Ignoring non-command byte: 0x%02x", byte); // Nur aktivieren, wenn nötig!
         rx_index = 0;
         return PS_WAITING_FOR_COMMAND;
     }

firmware/src/usb.c

@@ -95,6 +95,18 @@ void usb_write_buffer(const uint8_t *buf, size_t len)
     }
 }
 
+void usb_flush_rx(void)
+{
+    uint8_t dummy;
+    if (!device_is_ready(cdc_dev)) return;
+    
+    // Alles lesen, was gerade im Hardware-FIFO liegt
+    while (uart_fifo_read(cdc_dev, &dummy, 1) > 0);
+    
+    // Semaphore zurücksetzen, falls sie gesetzt war
+    k_sem_reset(&usb_rx_sem);
+}
+
 static void usb_status_cb(enum usb_dc_status_code cb_status, const uint8_t *param)
 {
     switch (cb_status) {

firmware/src/usb.h

@@ -47,4 +47,9 @@ void usb_write_char(uint8_t c);
  */
 void usb_write_buffer(const uint8_t *buf, size_t len);
 
+/**
+ * @brief Flushes the USB RX FIFO
+ */
+void usb_flush_rx(void);
+
 #endif // USB_CDC_ACM_H