esp-idf/examples/system/light_sleep/pytest_light_sleep.py

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# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: CC0-1.0
import logging
import time
import pytest
from pytest_embedded import Dut
# IDF-5053
@pytest.mark.esp32
@pytest.mark.esp32s2
@pytest.mark.esp32s3
@pytest.mark.esp32c3
@pytest.mark.generic
def test_light_sleep(dut: Dut) -> None:
ENTERING_SLEEP_STR = 'Entering light sleep'
EXIT_SLEEP_REGEX = r'Returned from light sleep, reason: (\w+), t=(\d+) ms, slept for (\d+) ms'
EXIT_SLEEP_PIN_REGEX = r'Returned from light sleep, reason: (pin), t=(\d+) ms, slept for (\d+) ms'
EXIT_SLEEP_UART_REGEX = r'Returned from light sleep, reason: (uart), t=(\d+) ms, slept for (\d+) ms'
WAITING_FOR_GPIO_STR = r'Waiting for GPIO\d to go high...'
WAKEUP_INTERVAL_MS = 2000
# Ensure DTR and RTS are de-asserted for proper control of GPIO0
dut.serial.proc.setDTR(False)
dut.serial.proc.setRTS(False)
# enter sleep first time
dut.expect_exact(ENTERING_SLEEP_STR, timeout=30)
# don't check timing here, might be cache dependent
dut.expect(EXIT_SLEEP_REGEX)
logging.info('Got first sleep period')
# enter sleep second time
dut.expect_exact(ENTERING_SLEEP_STR)
match = dut.expect(EXIT_SLEEP_REGEX)
logging.info('Got second sleep period, wakeup from {}, slept for {}'.format(match.group(1), match.group(3)))
# sleep time error should be less than 1ms
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assert match.group(1).decode('utf8') == 'timer' and int(match.group(3)) >= WAKEUP_INTERVAL_MS - 1 and int(match.group(3)) <= WAKEUP_INTERVAL_MS + 1
# this time we'll test gpio wakeup
dut.expect_exact(ENTERING_SLEEP_STR)
logging.info('Pulling GPIO0 low using DTR')
dut.serial.proc.setDTR(True)
time.sleep(1)
match = dut.expect(EXIT_SLEEP_PIN_REGEX)
logging.info('Got third sleep period, wakeup from {}, slept for {}'.format(match.group(1), match.group(3)))
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assert int(match.group(3)) < WAKEUP_INTERVAL_MS
dut.expect(WAITING_FOR_GPIO_STR)
logging.info('Is waiting for GPIO...')
dut.serial.proc.setDTR(False)
dut.expect_exact(ENTERING_SLEEP_STR)
logging.info('Went to sleep again')
# Write 'U' to uart, 'U' in ascii is 0x55 which contains 8 edges in total
dut.write('U')
time.sleep(1)
match = dut.expect(EXIT_SLEEP_UART_REGEX)
logging.info('Got third sleep period, wakeup from {}, slept for {}'.format(match.group(1), match.group(3)))
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assert int(match.group(3)) < WAKEUP_INTERVAL_MS
logging.info('Went to sleep again')
match = dut.expect(EXIT_SLEEP_REGEX)
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assert match.group(1).decode('utf8') == 'timer' and int(match.group(3)) >= WAKEUP_INTERVAL_MS - 1 and int(match.group(3)) <= WAKEUP_INTERVAL_MS + 1
logging.info('Woke up from timer again')