CAN Driver

The following commit contains the first version of the ESP32 CAN Driver.

closes #544

examples/peripherals/can/can_alert_and_recovery/example_test.py

@@ -0,0 +1,29 @@
+#Need Python 3 string formatting functions
+from __future__ import print_function
+
+import re
+import os
+import sys
+# The test cause is dependent on the Tiny Test Framework. Ensure the
+# `TEST_FW_PATH` environment variable is set to `$IDF_PATH/tools/tiny-test-fw`
+test_fw_path = os.getenv("TEST_FW_PATH")
+if test_fw_path and test_fw_path not in sys.path:
+    sys.path.insert(0, test_fw_path)
+import TinyFW
+import IDF
+
+# CAN Self Test Example constants
+STR_EXPECT = ("CAN Alert and Recovery: Driver installed", "CAN Alert and Recovery: Driver uninstalled")
+EXPECT_TIMEOUT = 20
+
+@IDF.idf_example_test(env_tag='Example_CAN')
+def test_can_alert_and_recovery_example(env, extra_data):
+    #Get device under test, flash and start example. "dut4" must be defined in EnvConfig
+    dut = env.get_dut('dut4', 'examples/peripherals/can/can_alert_and_recovery')
+    dut.start_app()
+
+    for string in STR_EXPECT:
+        dut.expect(string, timeout = EXPECT_TIMEOUT)
+
+if __name__ == '__main__':
+    test_can_alert_and_recovery_example()