esp-idf/examples/peripherals/usb/host/msc/pytest_usb_host_msc.py

# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: CC0-1.0
import pytest
from pytest_embedded import Dut


CONFIGS = [
    pytest.param('default', marks=[pytest.mark.esp32s2, pytest.mark.esp32s3, pytest.mark.esp32p4]),
    pytest.param('esp32p4_psram', marks=[pytest.mark.esp32p4])
]


@pytest.mark.usb_host_flash_disk
@pytest.mark.temp_skip_ci(targets=['esp32s2'], reason='lack of runners with usb_host_flash_disk tag')
@pytest.mark.parametrize('config', CONFIGS, indirect=True)
def test_usb_host_msc_example(dut: Dut) -> None:
    # Check whether the USB-DWC DMA capable memory is allocated in PSRAM
    usb_dwc_in_psram = bool(dut.app.sdkconfig.get('USB_HOST_DWC_DMA_CAP_MEMORY_IN_PSRAM'))

    # Get wMaxPacketSize to get USB device speed
    max_packet_size = int(dut.expect(r'wMaxPacketSize (\d{2,3})')[1].decode())

    # Check result of file_operations()
    dut.expect_exact("example: Read from file '/usb/esp/test.txt': 'Hello World!'")

    # Check result of speed_test()
    write_throughput = float(dut.expect(r'example: Write speed ([0-9]*[.]?[0-9]+) MiB')[1].decode())
    read_throughput = float(dut.expect(r'example: Read speed ([0-9]*[.]?[0-9]+) MiB')[1].decode())

    # Set write and read throughput limits
    if max_packet_size == 512:  # wMaxPacketSize = 512 for HS
        write_throughput_limit = 3.5 if usb_dwc_in_psram else 4.9
        read_throughput_limit = 9.9 if usb_dwc_in_psram else 11.5
    else:  # wMaxPacketSize = 64 for FS
        write_throughput_limit = 0.9
        read_throughput_limit = 1.0

    # Evaluate the speed measurements
    if write_throughput > write_throughput_limit:
        print('Write throughput put OK')
    else:
        print('write throughput too slow!')
    if read_throughput > read_throughput_limit:
        print('Read throughput put OK')
    else:
        print('Read throughput too slow!')