ice40: More Python bindings and examples

Signed-off-by: David Shah <davey1576@gmail.com>

ice40/main.cc

@@ -161,6 +161,7 @@ int main(int argc, char *argv[])
     Design design(chipArgs);
     init_python(argv[0]);
     python_export_global("design", design);
+    python_export_global("chip", design.chip);
 
     if (vm.count("test")) {
         int bel_count = 0, wire_count = 0, pip_count = 0;

ice40/pybindings.cc

@@ -66,7 +66,22 @@ void arch_wrap_python()
             .def("getBelName", &Chip::getBelName)
             .def("getWireName", &Chip::getWireName)
             .def("getBels", &Chip::getBels)
-            .def("getWires", &Chip::getWires);
+            .def("getBelType", &Chip::getBelType)
+            .def("getWireBelPin", &Chip::getWireBelPin)
+            .def("getBelPinUphill", &Chip::getBelPinUphill)
+            .def("getBelPinsDownhill", &Chip::getBelPinsDownhill)
+            .def("getWires", &Chip::getWires)
+            .def("getPipByName", &Chip::getPipByName)
+            .def("getPipName", &Chip::getPipName)
+            .def("getPips", &Chip::getPips)
+            .def("getPipSrcWire", &Chip::getPipSrcWire)
+            .def("getPipDstWire", &Chip::getPipDstWire)
+            .def("getPipDelay", &Chip::getPipDelay)
+            .def("getPipsDownhill", &Chip::getPipsDownhill)
+            .def("getPipsUphill", &Chip::getPipsUphill)
+            .def("getWireAliases", &Chip::getWireAliases)
+            .def("getBelPosition", &Chip::getBelPosition)
+            .def("getWirePosition", &Chip::getWirePosition);
 
     WRAP_RANGE(Bel);
     WRAP_RANGE(BelPin);

python/functions.py

@@ -1,2 +1,21 @@
-def test_function():
-    print("Hello World!")
+def get_drivers(wire):
+    wid = chip.getWireByName(wire)
+    assert not wid.nil(), "wire {} not found".format(wire)
+    bp = chip.getBelPinUphill(wid)
+    if not bp.bel.nil():
+        print("Bel pin: {}.{}".format(chip.getBelName(bp.bel), str(bp.pin)))
+    for pip in sorted(chip.getPipsUphill(wid), key=lambda x: x.index):
+        print("Pip: {}".format(chip.getWireName(chip.getPipSrcWire(pip))))
+
+
+def get_loads(wire):
+    wid = chip.getWireByName(wire)
+    assert not wid.nil(), "wire {} not found".format(wire)
+    for bp in sorted(chip.getBelPinsDownhill(wid), key=lambda x: (x.bel.index, x.pin)):
+        print("Bel pin: {}.{}".format(chip.getBelName(bp.bel), str(bp.pin)))
+    for pip in sorted(chip.getPipsDownhill(wid), key=lambda x: x.index):
+        print("Pip: {}".format(chip.getWireName(chip.getPipDstWire(pip))))
+
+
+#get_drivers("12_14_lutff_7/in_3")
+#get_loads("12_14_lutff_global/clk")

python/python_test.py

@@ -1,6 +1,2 @@
-from nextpnrpy_ice40 import Chip, ChipArgs, iCE40Type
-args = ChipArgs()
-args.type = iCE40Type.LP384
-chip = Chip(args)
 for wire in chip.getWires():
     print(chip.getWireName(wire))