git.gag.com Git - debian/gnuradio/blob - usrp/host/swig/util.py

   1 # utilities
   2
   3 from usrp_prims import *
   4
   5 def setup (which_board = 0):
   6     if not usrp_load_standard_bits (which_board, False):
   7         raise RuntimeError, "usrp_load_standard_bits"
   8     dev = usrp_find_device (which_board)
   9     if not dev:
  10         raise RuntimeError, "usrp_find_device"
  11     u = usrp_open_cmd_interface (dev)
  12     if not u:
  13         raise RuntimeError, "usrp_open_cmd_interface"
  14
  15     # FIXME setup high speed paths, Aux ADC Clock, ...
  16
  17     # usrp_9862_write (u, 0, 35, 0x1)     # aux ADC clock = CLK/4
  18     # usrp_9862_write (u, 1, 35, 0x1)
  19
  20     return u
  21
  22 def write_slot_oe (u, slot, value, mask):
  23     assert 0 <= slot and slot < 4
  24     return usrp_write_fpga_reg (u, slot + FR_OE_0,
  25                                 ((mask & 0xffff) << 16) | (value & 0xffff))
  26
  27 def write_slot_io (u, slot, value, mask):
  28     assert 0 <= slot and slot < 4
  29     return usrp_write_fpga_reg (u, slot + FR_IO_0,
  30                                 ((mask & 0xffff) << 16) | (value & 0xffff))
  31
  32
  33 # ----------------------------------------------------------------
  34
  35
  36 def ramp_aux_dac (u, which_codec, which_dac):
  37     if not (which_codec == 0 or which_codec == 1):
  38         raise AssertionError
  39     if not (which_dac >= 0 and which_dac < 4):
  40         raise AssertionError
  41     try:
  42         if which_dac == 3:                  # sigma delta output
  43             sigma_delta_loop (u, which_codec)
  44         else:
  45             aux_dac_loop (u, which_codec, which_dac)
  46     except KeyboardInterrupt:
  47         return
  48
  49 def sigma_delta_loop (u, which_codec):
  50     counter = 0
  51     while True:
  52         usrp_9862_write (u, which_codec, 43, counter >> 4)
  53         usrp_9862_write (u, which_codec, 42, (counter & 0xf) << 4)
  54         # counter += 1 FIXME
  55         counter += 4
  56         if counter > 0xfff:
  57             counter = 0
  58
  59 def aux_dac_loop (u, which_codec, which_dac):
  60     reg = 36 + which_dac                # Aux DAC A,B,C
  61     counter = 0
  62     while True:
  63         usrp_9862_write (u, which_codec, reg, counter)
  64         counter += 1
  65         if counter > 0xff:
  66             counter = 0
  67
  68
  69 def read_aux_adc_loop (u, slot, which_adc):
  70     while True:
  71         v = usrp_read_aux_adc (u, slot, which_adc)
  72         print "%3d  %5.3f" % (v, v * 3.3 / 1024)
  73
  74 def ramp_io_port (u, slot):
  75     counter = 0
  76     try:
  77         while True:
  78             write_slot_io (u, slot, counter, 0xffff)
  79             counter += 1
  80             if counter > 0xffff:
  81                 counter = 0
  82     except KeyboardInterrupt:
  83         return
  84
  85 def walk_io_port (u, slot):
  86     bit = 1
  87     try:
  88         while True:
  89             write_slot_io (u, slot, bit, 0xffff)
  90             bit = (bit << 1) & 0xffff
  91             if bit == 0:
  92                 bit = 1
  93     except KeyboardInterrupt:
  94         return
  95