functional SPICE crossbar

1 files changed, 0 insertions, 73 deletions

diff --git a/MIL_testing/spice_backend.py b/MIL_testing/spice_backend.py
deleted file mode 100644
index c6be8a1..0000000
--- a/MIL_testing/spice_backend.py
+++ /dev/null
@@ -1,73 +0,0 @@
-import subprocess
-import re
-from spicelib import RawRead
-
-class SpiceBackend:
-    """This is what actually does all of the spice stuff"""
-    def __init__(self, device_file: str):
-        self.conductance = 0
-        self.voltage = 0
-        self.current = 0
-        self.time = 0
-        self.state = None
-        self.dt = 1e-9
-
-    def simulate(self, voltage_signal: float, return_current: bool = False) -> float:
-        """runs the simulation for one time step"""
-        len_voltage_signal = 1
-        try:
-            len_voltage_signal = len(voltage_signal)
-        except:
-            voltage_signal = [voltage_signal]
-
-        if return_current:
-            current = np.zeros(len_voltage_signal)
-
-        for t in enumerate(len_voltage_signal):
-            result = self.run_spice(voltage_signal)
-
-            single_current = result.current
-            self.conductance = result.conductance
-
-            if return_current:
-                current[t] = single_current
-
-        if return_current:
-            return current
-
-
-    def set_conductance(self, conductance: float):
-        """Handled by spice now"""
-        """Could probably still add some safety checks just to be sure later"""
-        self.conductance = conductance
-
-    def run_spice(self, voltage: float) -> float:
-        """returns the current after given a voltage signal"""
-        #need to find a way to pass voltage signal to ngspice here
-        #also maybe a time series resolution??
-        result = subprocess.run(
-                ["ngspice" "-b" "simulation.cir"],
-                capture_output=True,
-                text=True
-        )
-        if result.returncode != 0:
-            raise RuntimeError(result.stderr)
-
-        # parse current into float variable
-        output = result.stdout
-        #is there a better (less rigid) way of grabbing the output
-        current_match = re.search("final_current = ([-\deE.+]+)", output)
-        if current_match is None:
-            raise RuntimeError("Could not find current in ngspice output")
-
-        current = float(current_match.group(1))
-
-        if abs(voltage) > 1e-12:
-            conductance = current / voltage
-        else:
-            conductance = self.conductance
-
-        return {
-                "current": current,
-                "conductance": conductance,
-        }