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FreeDATA/test/README.md
DJ2LS 770630a031
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2020-12-15 18:14:54 +01:00

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TESTS

TEST_TX.py --> Send string "TEST"

./TEST_TX.py | ./freedv_data_raw_rx DATAC3 - - | hexdump -C

Output should be:

payload bytes_per_modem_frame: 30
00000000  54 45 53 54 00 00 00 00  00 00 00 00 00 00 00 00  |TEST............|
modem bufs processed: 22  output bytes: 30 output_frames: 1 
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00        |..............|
0000001e

   ./TEST_TX.py | ./freedv_data_raw_rx DATAC3 - -
   
   
   
   
   
   ###################### CHECKSUM COMPARISON FREEDV VS CRCENGINE ########
    #https://crccalc.com
    
    teststring = b'TEST'
    

 
    # freedv crc16 checksum
    crctest2 = c_ushort(self.c_lib.freedv_gen_crc16(teststring, len(teststring)))
    print("FREEDV2: " + str(crctest2.value) + " = " + hex(crctest2.value))      
    
  
    #Python crc16 checksum
    crc_algorithm = crcengine.new('crc16-ccitt-false') #load crc16 library 
    crctest3 = crc_algorithm(teststring)
    print("CRCENGINE: " + str(crctest3) + " = " + hex(crctest3))
    
    
    #######################################################################