Change _get_status to _status property

Author: bessman

PSL/i2c.py

@@ -95,8 +95,9 @@ def scan(self) -> List[int]:
 
         return addrs
 
-    def _get_status(self):
-        """Get the contents of the I2C2STAT register.
+    @property
+    def _status(self):
+        """int: Contents of the I2C2STAT register.
 
         bit 15  ACKSTAT: Acknowledge Status
                 1 = NACK received from slave.

tests/recordings/i2c/test_status.json

@@ -0,0 +1 @@
+[[[4], [14], [4], [9], [244, 1], [4], [9], [244, 1], [4], [10]], [[], [1], [], [], [1], [], [], [1], [], [0, 0, 1]]]

tests/test_i2c.py

@@ -1,3 +1,11 @@
+"""Tests for PSL.i2c.
+
+When integration testing, the PSLab's logic analyzer is used to verify the
+function of the I2C bus. Before running the integration tests, connect:
+    SCL->LA1
+    SDA->LA2
+"""
+
 import pytest
 
 from PSL.i2c import I2CMaster, I2CSlave
@@ -65,6 +73,12 @@ def test_scan(master: I2CMaster):
     assert mcp4728_address in master.scan()
 
 
+def test_status(master: I2CMaster):
+    master.configure(1.25e5)
+    # No status bits should be set on a newly configured bus.
+    assert not master._status
+
+
 def test_start_slave(la: LogicAnalyzer, slave: I2CSlave):
     la.capture(2, block=False)
     slave._start(1)