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boards/default_src/micropython/origin/build/lib/syn6288.py

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+"""
+SYN6288
+
+Micropython library for the SYN6288(speech synthesis)
+=======================================================
+#Preliminary composition        20220805
+
+dahanzimin From the Mixly Team 
+"""
+import time
+from micropython import const
+
+REG_PLAY_SST        = const(0x01)
+#REG_BAUD_SST        = const(0x31)
+#REG_STOP_SST        = const(0x02)
+#REG_PAUSE_SST       = const(0x03)
+#REG_RESUME_SST      = const(0x04)
+#EG_QUERY_SST        = const(0x21)
+#EG_DOWN_SST         = const(0x88)
+
+class SYN6288:
+    def __init__(self, uart):
+        self._uart=uart
+        self._uart.init(baudrate=9600)
+        self._state=False
+        self._volume="[v10]"
+    
+    def _wreg(self, reg, val5=0,val3=None, data=None):
+        '''Write memory address'''
+        buffer=[0xFD,0x00,0x00,reg]
+        eec=0
+
+        if not val5 is None and not val3 is None :
+            buffer.append((val3 & 0x07) | (val5 << 3))
+            if not data is None:
+                for char in data:
+                    buffer.append(ord(char) >> 8)
+                    buffer.append(ord(char) & 0xFF)
+                    
+        buffer[2]= len(buffer)-2
+        for i in range(len(buffer)):
+            eec^=int(buffer[i])
+        buffer.append(eec)
+      
+        self._uart.write(bytes(buffer))
+
+    def volume(self,vol=None):
+        if vol is None:
+            return int(self._volume[2:-1])
+        if not 0 <= vol <= 16:
+            raise ValueError("The effective range of volume value is 0~16")
+        else:
+            self._volume="[v{}]".format(vol)
+
+    def synthesis(self, data, music=0, blocking=True):
+        """Support uincode coded speech synthesis"""
+        self._wreg(REG_PLAY_SST,music,3,self._volume+str(data))
+        time.sleep(0.1)
+        while blocking :
+            if not self.status():
+                break
+        
+    def status(self):
+        """Playback status (true is playing)"""
+        if self._uart.any():
+            state= self._uart.read()
+            if state==b'A':
+                self._state = True
+            if state==b'O':
+                self._state = False
+        return self._state 
+       
+    def hint_tones(self,number, blocking=True):
+        """Play built-in prompt tone"""
+        if number <25:
+            tones="sound"+chr(ord("a")+number)
+        elif number <33:
+            tones="msg"+chr(ord("a")+number-25)
+        elif number <48:
+            tones="ring"+chr(ord("a")+number-33)
+        else:
+            raise ValueError("Input out of range")
+        self.synthesis(tones,blocking=blocking)