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'''
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Created on Feb 8, 2016
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@author: Miguel Urco
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'''
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import string
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def read_dds_file(fp):
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"""
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Function to extract the parameters from a text file with the next format:
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Input:
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File with the next content:
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Phase Adjust Register 1
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-----------------------
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00000000
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00000000
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.....
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-----------------------
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Frequency Tuning Word 1
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-----------------------
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00110101
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01111111
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11111111
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11111111
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10100000
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00000000
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Output:
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Return configuration parameters for DDS: multiplier, frequency, phase, amplitude, etc.
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"""
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kwargs = {}
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dds_registers = []
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for this_line in fp:
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this_line = str.strip(this_line)
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if not str.isdigit(this_line):
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continue
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if len(this_line) != 8:
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continue
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dds_registers.append(string.atoi(this_line,2))
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if len(dds_registers) != 40:
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return kwargs
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kwargs['clock'] = 60.0
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kwargs['phase_bin'] = dds_registers[0]*(2**8) + dds_registers[1]
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kwargs['phase_mod_bin'] = dds_registers[2]*(2**8) + dds_registers[3]
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kwargs['frequency_bin'] = dds_registers[4]*(2**40) + dds_registers[5]*(2**32) + dds_registers[6]*(2**24) + dds_registers[7]*(2**16) + dds_registers[8]*(2**8) + dds_registers[9]
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kwargs['frequency_mod_bin'] = dds_registers[10]*(2**40) + dds_registers[11]*(2**32) + dds_registers[12]*(2**24) + dds_registers[13]*(2**16) + dds_registers[14]*(2**8) + dds_registers[15]
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kwargs['delta_frequency'] = dds_registers[16]*(2**40) + dds_registers[17]*(2**32) + dds_registers[18]*(2**24) + dds_registers[19]*(2**16) + dds_registers[20]*(2**8) + dds_registers[21]
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kwargs['update_clock'] = dds_registers[22]*(2**24) + dds_registers[23]*(2**16) + dds_registers[24]*(2**8) + dds_registers[25]
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kwargs['ramp_rate_clock'] = dds_registers[26]*(2**16) + dds_registers[27]*(2**8) + dds_registers[28]
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kwargs['control_register'] = dds_registers[29]*(2**24) + dds_registers[30]*(2**16) + dds_registers[31]*(2**8) + dds_registers[32]
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kwargs['multiplier'] = dds_registers[30] & 0x1F
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kwargs['modulation'] = (dds_registers[31] & 0x0E) >> 1
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kwargs['amplitude_enabled'] = (dds_registers[32] & 0x20) >> 5
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kwargs['amplitude_ch_A'] = (dds_registers[33]*(2**8) + dds_registers[34]) & 0x0FFF
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kwargs['amplitude_ch_B'] = (dds_registers[35]*(2**8) + dds_registers[36]) & 0x0FFF
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kwargs['amplitude_ramp_rate'] = dds_registers[37]
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return kwargs
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def read_json_file(fp):
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kwargs = {}
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return kwargs
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def write_dds_file(filename):
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pass
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def write_json_file(filename):
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pass
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