mirror of https://gerrit.osmocom.org/libusrp
96 lines
2.6 KiB
Python
96 lines
2.6 KiB
Python
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# utilities
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from usrp_prims import *
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def setup (which_board = 0):
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if not usrp_load_standard_bits (which_board, False):
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raise RuntimeError, "usrp_load_standard_bits"
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dev = usrp_find_device (which_board)
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if not dev:
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raise RuntimeError, "usrp_find_device"
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u = usrp_open_cmd_interface (dev)
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if not u:
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raise RuntimeError, "usrp_open_cmd_interface"
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# FIXME setup high speed paths, Aux ADC Clock, ...
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# usrp_9862_write (u, 0, 35, 0x1) # aux ADC clock = CLK/4
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# usrp_9862_write (u, 1, 35, 0x1)
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return u
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def write_slot_oe (u, slot, value, mask):
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assert 0 <= slot and slot < 4
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return usrp_write_fpga_reg (u, slot + FR_OE_0,
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((mask & 0xffff) << 16) | (value & 0xffff))
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def write_slot_io (u, slot, value, mask):
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assert 0 <= slot and slot < 4
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return usrp_write_fpga_reg (u, slot + FR_IO_0,
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((mask & 0xffff) << 16) | (value & 0xffff))
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# ----------------------------------------------------------------
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def ramp_aux_dac (u, which_codec, which_dac):
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if not (which_codec == 0 or which_codec == 1):
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raise AssertionError
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if not (which_dac >= 0 and which_dac < 4):
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raise AssertionError
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try:
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if which_dac == 3: # sigma delta output
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sigma_delta_loop (u, which_codec)
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else:
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aux_dac_loop (u, which_codec, which_dac)
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except KeyboardInterrupt:
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return
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def sigma_delta_loop (u, which_codec):
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counter = 0
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while True:
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usrp_9862_write (u, which_codec, 43, counter >> 4)
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usrp_9862_write (u, which_codec, 42, (counter & 0xf) << 4)
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# counter += 1 FIXME
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counter += 4
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if counter > 0xfff:
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counter = 0
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def aux_dac_loop (u, which_codec, which_dac):
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reg = 36 + which_dac # Aux DAC A,B,C
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counter = 0
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while True:
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usrp_9862_write (u, which_codec, reg, counter)
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counter += 1
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if counter > 0xff:
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counter = 0
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def read_aux_adc_loop (u, slot, which_adc):
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while True:
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v = usrp_read_aux_adc (u, slot, which_adc)
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print "%3d %5.3f" % (v, v * 3.3 / 1024)
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def ramp_io_port (u, slot):
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counter = 0
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try:
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while True:
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write_slot_io (u, slot, counter, 0xffff)
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counter += 1
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if counter > 0xffff:
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counter = 0
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except KeyboardInterrupt:
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return
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def walk_io_port (u, slot):
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bit = 1
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try:
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while True:
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write_slot_io (u, slot, bit, 0xffff)
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bit = (bit << 1) & 0xffff
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if bit == 0:
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bit = 1
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except KeyboardInterrupt:
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return
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