markondej · May 28, 2020
Showing with 40 additions and 0 deletions.

+40 −0 PiStation.py
diff --git a/PiStation.py b/PiStation.py
@@ -0,0 +1,40 @@
+#!/usr/bin/python
+
+import os, argparse
+
+parser = argparse.ArgumentParser(prog='python PiStation.py', description='Broadcasts WAV/MP3 file over FM using RPI GPIO #4 pin.')
+parser.add_argument("song_file")
+parser.add_argument("-f", "--frequency", help="Set TX frequency. Acceptable range 87.1-108.2", type=float)
+arg = parser.parse_args()
+
+def main():
+    os.system('clear')
+    frequency = 0
+    #frequency=freq()	
+    print ("Welcome to PiStation!  \nVersion 1.0 \nGPLv3 License\n")    
+    #This block is for setting default values for frequency in case argument is not provided
+    if arg.frequency is None:
+        frequency = raw_input("Enter the frequency (press Enter to set default frequency of 103.3 MHz) : ")
+        if frequency == "":
+            frequency = '103.3'
+    elif 87.1 >= arg.frequency >= 108.2:
+        print "Frequency argument out of range.";exit()
+    else:
+	frequency = str(arg.frequency)
+    print frequency
+    try:
+        if ".mp3" in arg.song_file.lower():
+            os.system("ffmpeg -i "+arg.song_file+" "+"-f s16le -ar 22.05k -ac 1 - | sudo ./fm_transmitter -f"+" "+frequency+" "+" - ")
+        elif ".wav" in arg.song_file.lower():	    
+	    os.system("sudo ./fm_transmitter -f"+" "+frequency+" "+arg.song_file)
+        else:
+            print "That file extension is not supported."
+            print "File name provided: %s" %arg.song_file
+            raise IOError
+    except Exception:
+        print "Something went wrong. Halting."; exit()
+    except IOError:
+        print "There was an error regarding file selection. Halting."; exit()
+
+if __name__ == '__main__':
+    main()