1 files changed, 95 insertions, 0 deletions
diff --git a/usrp/host/swig/util.py b/usrp/host/swig/util.py
new file mode 100644
index 0000000000..089bcaaac2
--- /dev/null
+++ b/usrp/host/swig/util.py
@@ -0,0 +1,95 @@
+# utilities
+
+from usrp_prims import *
+
+def setup (which_board = 0):
+    if not usrp_load_standard_bits (which_board, False):
+        raise RuntimeError, "usrp_load_standard_bits"
+    dev = usrp_find_device (which_board)
+    if not dev:
+        raise RuntimeError, "usrp_find_device"
+    u = usrp_open_cmd_interface (dev)
+    if not u:
+        raise RuntimeError, "usrp_open_cmd_interface"
+
+    # FIXME setup high speed paths, Aux ADC Clock, ...
+
+    # usrp_9862_write (u, 0, 35, 0x1)     # aux ADC clock = CLK/4
+    # usrp_9862_write (u, 1, 35, 0x1)
+
+    return u
+
+def write_slot_oe (u, slot, value, mask):
+    assert 0 <= slot and slot < 4
+    return usrp_write_fpga_reg (u, slot + FR_OE_0,
+                                ((mask & 0xffff) << 16) | (value & 0xffff))
+
+def write_slot_io (u, slot, value, mask):
+    assert 0 <= slot and slot < 4
+    return usrp_write_fpga_reg (u, slot + FR_IO_0,
+                                ((mask & 0xffff) << 16) | (value & 0xffff))
+
+
+# ----------------------------------------------------------------
+
+
+def ramp_aux_dac (u, which_codec, which_dac):
+    if not (which_codec == 0 or which_codec == 1):
+        raise AssertionError
+    if not (which_dac >= 0 and which_dac < 4):
+        raise AssertionError
+    try:
+        if which_dac == 3:                  # sigma delta output
+            sigma_delta_loop (u, which_codec)
+        else:
+            aux_dac_loop (u, which_codec, which_dac)
+    except KeyboardInterrupt:
+        return
+
+def sigma_delta_loop (u, which_codec):
+    counter = 0
+    while True:
+        usrp_9862_write (u, which_codec, 43, counter >> 4)
+        usrp_9862_write (u, which_codec, 42, (counter & 0xf) << 4)
+        # counter += 1 FIXME
+        counter += 4
+        if counter > 0xfff:
+            counter = 0
+
+def aux_dac_loop (u, which_codec, which_dac):
+    reg = 36 + which_dac                # Aux DAC A,B,C
+    counter = 0
+    while True:
+        usrp_9862_write (u, which_codec, reg, counter)
+        counter += 1
+        if counter > 0xff:
+            counter = 0
+
+
+def read_aux_adc_loop (u, slot, which_adc):
+    while True:
+        v = usrp_read_aux_adc (u, slot, which_adc)
+        print "%3d  %5.3f" % (v, v * 3.3 / 1024)
+
+def ramp_io_port (u, slot):
+    counter = 0
+    try:
+        while True:
+            write_slot_io (u, slot, counter, 0xffff)
+            counter += 1
+            if counter > 0xffff:
+                counter = 0
+    except KeyboardInterrupt:
+        return
+
+def walk_io_port (u, slot):
+    bit = 1
+    try:
+        while True:
+            write_slot_io (u, slot, bit, 0xffff)
+            bit = (bit << 1) & 0xffff
+            if bit == 0:
+                bit = 1
+    except KeyboardInterrupt:
+        return
+