timer_group: added example test

examples/peripherals/timer_group/example_test.py

@@ -0,0 +1,39 @@
+from __future__ import unicode_literals
+
+import re
+from typing import Any
+
+import ttfw_idf
+
+
+@ttfw_idf.idf_example_test(env_tag='Example_GENERIC')
+def test_examples_timergroup(env, extra_data):  # type: (Any, Any) -> None
+    dut = env.get_dut('timer_group', 'examples/peripherals/timer_group')
+    dut.start_app()
+
+    # check auto reload function
+    with_auto_reload = dut.expect(re.compile(r'Timer Group (\S+) auto reload'), timeout=30)[0]
+    assert with_auto_reload == 'with'
+    select_groups = dut.expect(re.compile(r'Group\[(\d)\], timer\[(\d)\] alarm event'))
+    timer_group_num = int(select_groups[0])
+    timer_instance_num = int(select_groups[1])
+    assert timer_group_num == 0 and timer_instance_num == 0
+    dut.expect('EVENT TIME')
+    counter_value = dut.expect(re.compile(r'Counter:\s+(0x\d+)'))[0]
+    counter_value = int(counter_value, 16)
+    print('counter value at auto reload event: ', counter_value)
+    assert counter_value < 20
+
+    # check timer interval
+    dut.expect('Timer Group without auto reload', timeout=5)
+    dut.expect('EVENT TIME')
+    event_time0 = dut.expect(re.compile(r'Time\s+:\s+(\d+\.\d+)\s+s'))[0]
+    dut.expect('Timer Group without auto reload', timeout=6)
+    dut.expect('EVENT TIME')
+    event_time1 = dut.expect(re.compile(r'Time\s+:\s+(\d+\.\d+)\s+s'))[0]
+    print('event0={}, event1={}'.format(event_time0, event_time1))
+    assert float(event_time1) - float(event_time0) < 5.001
+
+
+if __name__ == '__main__':
+    test_examples_timergroup()