Improvements to Dectalk driver.

src/fenrirscreenreader/fenrirVersion.py

@@ -4,5 +4,5 @@
 # Fenrir TTY screen reader
 # By Chrys, Storm Dragon, and contributors.
 
-version = "2026.07.25"
+version = "2026.07.26"
 code_name = "testing"

src/fenrirscreenreader/speechDriver/dectalkDriver.py

@@ -10,16 +10,17 @@ from fenrirscreenreader.speechDriver.hardwareSerialDriver import (
 
 
 class driver(hardware_serial_driver):
-    cancel_command = b"\x18"
+    cancel_command = b"\x03"
+    use_xon_xoff = True
 
     def _speak_bytes(self, text):
-        return self._clean_text(text).encode("ascii", errors="replace") + b"\x01"
+        return self._clean_text(text).encode("ascii", errors="replace") + b"\x0b"
 
     def _rate_command(self, rate):
         return self._setting_command("ra", self._scale(rate, 75, 650))
 
     def _pitch_command(self, pitch):
-        return self._setting_command("dv ap", self._scale(pitch, 50, 180))
+        return self._setting_command("dv ap", self._scale(pitch, 50, 350))
 
     def _volume_command(self, volume):
         return self._setting_command("vo", self._scale(volume, 0, 100))

src/fenrirscreenreader/speechDriver/hardwareSerialDriver.py

@@ -27,6 +27,7 @@ class SpeakQueue(Queue):
 class hardware_serial_driver(speech_driver):
     cancel_command = b""
     default_baud_rate = 9600
+    use_xon_xoff = False
 
     def __init__(self):
         speech_driver.__init__(self)
@@ -176,7 +177,11 @@ class hardware_serial_driver(speech_driver):
             attrs[5] = baud_rate
             attrs[6][termios.VMIN] = 0
             attrs[6][termios.VTIME] = 0
-            attrs[0] &= ~(termios.IXON | termios.IXOFF | termios.IXANY)
+            if self.use_xon_xoff:
+                attrs[0] |= termios.IXON
+                attrs[0] &= ~(termios.IXOFF | termios.IXANY)
+            else:
+                attrs[0] &= ~(termios.IXON | termios.IXOFF | termios.IXANY)
             termios.tcsetattr(port, termios.TCSANOW, attrs)
             return port
         except (OSError, termios.error) as error: