modify rda5807's radio.py and move state

utils/python_rd5807m/radio.py

@@ -0,0 +1,144 @@
+# -*- coding: utf8 -*-
+
+import ast
+import asyncio
+import sys
+import time
+
+from utils.python_rd5807m.rda5807m import Rda5807m
+
+
+class Radio:
+    def __init__(self):
+        self.device = Rda5807m(1)
+
+        self.commands = {
+            "on": {"call": self.device.on, "help": "power on device"},
+            "off": {"call": self.device.off, "help": "power off device"},
+            "^": {"call": self.device.set_bass, "value": True, "help": "bass boost"},
+            "v": {"call": self.device.set_bass, "value": False, "help": "normal bass"},
+            "1": {"call": self.device.set_mute, "value": True, "help": "mute"},
+            "0": {"call": self.device.set_mute, "value": False, "help": "unmute"},
+            "s": {"call": self.device.set_stereo, "value": True, "help": "stereo"},
+            "m": {"call": self.device.set_stereo, "value": False, "help": "mono"},
+            "v": {"call": self.set_volume, "type": int, "help": "set volume"},
+            "+": {"call": self.set_volume_plus, "help": "increase volume"},
+            "-": {"call": self.set_volume_moins, "help": "decrease volume"},
+            "f": {"call": self.set_frequency, "type": float, "help": "set frequency"},
+            ">": {"call": self.device.set_seek, "value": True, "help": "seek up"},
+            "<": {"call": self.device.set_seek, "value": False, "help": "seek down"},
+            "d": {"call": self.set_deemphasis, "type": int, "help": "de-emphasize"},
+            "i": {"call": self.get_infos, "help": "get infos"},
+            "h": {"call": self.help, "help": "help"},
+            "q": {"call": self.quit, "help": "quit"},
+        }
+
+        self.volume = 7  # default volume set in rda5807m.py
+
+    def initialize(self):
+        try:
+            self.device.init_chip()
+        except Exception as e:
+            print(f"problem while initializing: {e}")
+            raise e
+        time.sleep(0.2)
+
+    def print_prompt(self):
+        print(">> ", end="", flush=True)
+
+    def got_stdin_data(self):
+        input_string = sys.stdin.readline().strip("\n")
+        if input_string != "":
+            self.parse_command(input_string)
+        self.print_prompt()
+
+    def quit(self):
+        loop.stop()
+
+    def help(self):
+        for k, v in self.commands.items():
+            print("%s : %s" % (k, v["help"]))
+
+    def parse_command(self, entry):
+        parts = entry.split("=")
+        command = parts[0]
+        if command in self.commands:
+            params = self.commands[command]
+            call = params["call"]
+            if len(parts) == 1:
+                if "value" in params:
+                    value = params["value"]
+                    call(value)
+                else:
+                    call()
+            elif len(parts) == 2:
+                value = ast.literal_eval(parts[1])
+                if "type" in params:
+                    type_ = params["type"]
+                    if type(value) == type_:
+                        call(value)
+                    else:
+                        print("bad value type")
+                else:
+                    print("invalid syntax")
+            else:
+                print("invalid syntax")
+        else:
+            print("command not found")
+
+    def set_volume(self, volume):
+        if not 0 <= volume <= 15:
+            print("bad volume value (0-15)")
+            return
+        self.volume = volume
+        self.device.set_volume(volume)
+
+    def set_volume_moins(self):
+        if self.volume == 0:
+            return
+        self.volume -= 1
+        print("volume: %d" % (self.volume,))
+        self.device.set_volume(self.volume)
+
+    def set_volume_plus(self):
+        if self.volume == 15:
+            return
+        self.volume += 1
+        print("volume: %d" % (self.volume,))
+        self.device.set_volume(self.volume)
+
+    def set_frequency(self, frequency):
+        if not 76 <= frequency <= 107.5:
+            print("bad frequency value (76-107.5)")
+        frequency = int(frequency * 10)
+        self.device.set_frequency(frequency)
+
+    def set_deemphasis(self, deemphasis):
+        if deemphasis not in [50, 75]:
+            print("bad de-emphasis value (50, 75)")
+        self.device.set_deemphasis(deemphasis)
+
+    def get_infos(self):
+        infos = self.device.get_infos()
+        print(infos)
+
+    def poll_rds(self):
+        self.device.process_rds()
+        loop.call_later(0.1, self.poll_rds)
+
+    def close(self):
+        self.device.close()
+
+
+if __name__ == "__main__":
+    radio = Radio()
+    radio.initialize()
+    radio.help()
+    radio.print_prompt()
+
+    loop = asyncio.get_event_loop()
+    loop.add_reader(sys.stdin, radio.got_stdin_data)
+    loop.call_later(1, radio.poll_rds)
+    loop.run_forever()
+
+    radio.close()