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DJ2LS 2020-12-15 15:36:16 +01:00 committed by GitHub
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45
test/TEST_TX.py
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@ -79,35 +79,30 @@ class FreeDV():
mod_out = self.ModulationOut()() # new modulation object and get pointer to it
#buffer = bytearray(self.bytes_per_frame) # use this if no CRC16 checksum is required
buffer = bytearray(self.payload_per_frame) # use this if CRC16 checksum is required ( DATA1-3)
buffer[:len(data_out)] = data_out # set buffersize to length of data which will be send
data_list = [data_out[i:i+self.payload_per_frame] for i in range(0, len(data_out), self.payload_per_frame)] # split incomming bytes to size of 30bytes, create a list and loop through it
data_list_length = len(data_list)
for i in range(data_list_length): # LOOP THROUGH DATA LIST
#buffer = bytearray(self.bytes_per_frame) # use this if no CRC16 checksum is required
buffer = bytearray(self.payload_per_frame) # use this if CRC16 checksum is required ( DATA1-3)
buffer[:len(data_list[i])] = data_list[i] # set buffersize to length of data which will be send
#buffer = self.scramble(buffer, packet_num)
crc = c_ushort(self.c_lib.freedv_gen_crc16(bytes(buffer), self.payload_per_frame)) # generate CRC16
crc = crc.value.to_bytes(2, byteorder='big') # convert buffer to 2 byte hex string
buffer += crc # append crc16 to buffer
#print(buffer)
data = self.FrameBytes().from_buffer_copy(buffer) #change data format form bytearray to ctypes.u_byte
#print(len(data))
##return bytes(mod_out) #return modulated data as byte string
##crc_algorithm = crcengine.new('crc16-ccitt-false') #load crc16 library
##crc = crc_algorithm(buffer) # get new crc16 from buffer
#print(hex(crc))
crc = c_ushort(self.c_lib.freedv_gen_crc16(bytes(buffer), self.payload_per_frame)) # generate CRC16
crc = crc.value.to_bytes(2, byteorder='big') # convert buffer to 2 byte hex string
buffer += crc # append crc16 to buffer
#print(buffer)
data = self.FrameBytes().from_buffer_copy(buffer) #change data format form bytearray to ctypes.u_byte
#print(len(data))
##return bytes(mod_out) #return modulated data as byte string
#self.c_lib.freedv_rawdatapreambletx(self.freedv, mod_out) # SEND PREAMBLE
#print(bytes(mod_out), flush=True)
#self.c_lib.freedv_rawdatapreambletx(self.freedv, mod_out) # SEND PREAMBLE
#print(bytes(mod_out), flush=True)
self.c_lib.freedv_rawdatatx(self.freedv,mod_out,data) # modulate DATA
print(bytes(mod_out), flush=True)
self.c_lib.freedv_rawdatatx(self.freedv,mod_out,data) # modulate DATA
print(bytes(mod_out), flush=True)