Python3 Yaesu Serial Port Code

Sample Python3 Code to access a Yaesu Transceivers: VFO A Frequency, Power Output, and Mode. The Code below retreives Data from the Yaesu Transceiver. See the additional Code Snippets below to set VFO A, VFO B, Power Output.

import serial                 # The serial Module is not from Python installation. It must be installed via 'pip3 install pyserial'.

def Handle_FTdx1200():
 # NOTE: '4800' Baud is the default Baud Rate of the Yaesu: FTdx-1200 and many other Yaesu Transceivers.
 # You can choose faster Baud Rates; just, make sure to select the same Baud Rate on the Transceiver.
 lSer=serial.Serial('/dev/cu.usbserial', 4800) # Open a Serial Port, and configure its Baud Rate.

lSer.write('FA;'.encode())   # Tell Transceiver to obtain 'FA' VFO-A Frequency.
 # Only one (1) of the next two (2) Lines of Code needs to be commented out.
 lFreq=lSer.read(11)		  # Retrieve the 'FA' Data. NOTE: HF+6m Transceivers retur 'FAXXXXXXXX;', where there are eight (8) Digits.
 #lFreq=lSer.read(12)		  # Retrieve the 'FA' Data. NOTE: the FT-991A returns 'FAXXXXXXXXX;', where there are nine (9) Digits.

lSer.flush()				  # Purge the Input Buffer of any Characters.

lSer.write('MD0;'.encode())  # Tell Transceiver to obtain 'MD' lMode alue.
 lMode=lSer.read(5)		      # Retrieve the 'MD' Data

lSer.flush()				  # Purge the Input Buffer of any Characters.

lSer.write('PC;'.encode())   # Tell Transceiver to obtain 'PC' lPower Output Value.
 lPower=lSer.read(6)		  # Retrieve the 'PC' Data
 
 lSer.close()				  # Close the Connection of the USB Serial Adapter.

# Only one (1) of the next two (2) Lines of Code needs to be commented out.
 lFreq=lFreq[2:10]	    	  # Remove 'FA' and ending ';'. Again, this is for HF+6m Transceivers.
 #lFreq=lFreq[2:11]	    	  # Remove 'FA' and ending ';'. Again, this is for FT-991A Transceiver.
 lFreq=lFreq.decode("utf-8")  # Without '.decode("utf-8")' 'lFreq' would be printed, in the print Line below as "b'XXX', where XXX is the Value of lFreq.
 
 lPower=lPower[2:5]           # Remove 'PC' and ending ';'
 lPower=str(int(lPower))	  # If 'lPower' is less than 100 a preceding '0' will appear. This Code removes the preceding '0's. '005' becomes '5'. '050' becomes '50'.
 lPower=lPower.decode("utf-8")
 
 lMode=lMode[3:4]
 lMode=lMode.decode("utf-8")  # Without '.decode("utf-8")' 'lMode' would be printed, in the print Line below as "b'XXX', where XXX is the Value of lMode.
 
 if((lMode=='3') or (lMode=='7')):
  lMode='CW'
 elif((lMode=='1') or (lMode=='2')):
  lMode='PH'
 elif(lMode=='5'):
  lMode='AM'
 elif((lMode=='4') or (lMode=='B')):
  lMode='FM'
 elif((lMode=='8') or (lMode=='C')):
  lMode='DG'
 elif((lMode=='6') or (lMode=='9')):
  lMode='RY'
 else:
  lMode='---'
 
 return(lFreq, lMode, lPower)

If you have a single File of def Handle_FTdx1200(), other def's, plus your Code then to call the 'def Handle_FTdx1200()' Function - all one has to do, elsewhere in the Code, is, for Example, ...

...
...
(tFreq, tMode, tPower) = Handle_FTdx1200()
print('VFO A Freq. :'+tFreq)
print(' Mode :'+tMode)
print('Power Output:'+tPower)
...
...

If you have a File with the directly above Code, say titled 'myFTdx1200.01.py', but have saved the 'def Handle_FTdx1200()' Function in a different File titled 'SerialPort.py', then the 'myFTdx1200.01.py' File must include ...

import SerialPort

... with all the other 'import's. This is typically at the top Portion of the File.

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