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https://github.com/AsahiLinux/u-boot
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dd2b8c1155
As explained in commit 4af2a33ee5 ("cmd: gpio: Make `gpio input`
return pin value again") the `gpio input` is used in scripts to obtain
the value of a pin, despite the fact that CMD_RET_FAILURE is
indistinguishable from a valid pin value.
To be able to detect failures and properly use the value of a GPIO in
scripts we introduce the `gpio read` command that sets the variable
`name` to the value of the pin. Return code of the `gpio read` command
can be used to check for CMD_RET_SUCCESS or CMD_RET_FAILURE.
CONFIG_CMD_GPIO_READ is used to enable the `gpio read` command.
Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>
224 lines
7.1 KiB
Python
224 lines
7.1 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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#
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# Copyright (c) 2021 Adarsh Babu Kalepalli <opensource.kab@gmail.com>
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# Copyright (c) 2020 Alex Kiernan <alex.kiernan@gmail.com>
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import pytest
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import time
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import u_boot_utils
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"""
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test_gpio_input is intended to test the fix 4dbc107f4683.
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4dbc107f4683:"cmd: gpio: Correct do_gpio() return value"
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"""
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@pytest.mark.boardspec('sandbox')
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_input(u_boot_console):
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"""Test that gpio input correctly returns the value of a gpio pin."""
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response = u_boot_console.run_command('gpio input 0; echo rc:$?')
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expected_response = 'rc:0'
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assert(expected_response in response)
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response = u_boot_console.run_command('gpio toggle 0; gpio input 0; echo rc:$?')
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expected_response = 'rc:1'
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assert(expected_response in response)
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@pytest.mark.boardspec('sandbox')
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_exit_statuses(u_boot_console):
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"""Test that non-input gpio commands correctly return the command
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success/failure status."""
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expected_response = 'rc:0'
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response = u_boot_console.run_command('gpio clear 0; echo rc:$?')
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assert(expected_response in response)
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response = u_boot_console.run_command('gpio set 0; echo rc:$?')
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assert(expected_response in response)
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response = u_boot_console.run_command('gpio toggle 0; echo rc:$?')
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assert(expected_response in response)
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response = u_boot_console.run_command('gpio status -a; echo rc:$?')
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assert(expected_response in response)
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expected_response = 'rc:1'
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response = u_boot_console.run_command('gpio nonexistent-command; echo rc:$?')
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assert(expected_response in response)
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response = u_boot_console.run_command('gpio input 200; echo rc:$?')
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assert(expected_response in response)
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@pytest.mark.boardspec('sandbox')
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_read(u_boot_console):
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"""Test that gpio read correctly sets the variable to the value of a gpio pin."""
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response = u_boot_console.run_command('gpio read var 0; echo val:$var,rc:$?')
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expected_response = 'val:0,rc:0'
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assert(expected_response in response)
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response = u_boot_console.run_command('gpio toggle 0; gpio read var 0; echo val:$var,rc:$?')
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expected_response = 'val:1,rc:0'
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assert(expected_response in response)
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response = u_boot_console.run_command('setenv var; gpio read var nonexistent-gpio; echo val:$var,rc:$?')
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expected_response = 'val:,rc:1'
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assert(expected_response in response)
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"""
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Generic Tests for 'gpio' command on sandbox and real hardware.
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The below sequence of tests rely on env__gpio_dev_config for configuration values of gpio pins.
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Configuration data for gpio command.
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The set,clear,toggle ,input and status options of 'gpio' command are verified.
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For sake of verification,A LED/buzzer could be connected to GPIO pins configured as O/P.
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Logic level '1'/'0' can be applied onto GPIO pins configured as I/P
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env__gpio_dev_config = {
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#the number of 'gpio_str_x' strings should equal to
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#'gpio_str_count' value
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'gpio_str_count':4 ,
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'gpio_str_1': '0',
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'gpio_str_2': '31',
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'gpio_str_3': '63',
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'gpio_str_4': '127',
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'gpio_op_pin': '64',
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'gpio_ip_pin_set':'65',
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'gpio_ip_pin_clear':'66',
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'gpio_clear_value': 'value is 0',
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'gpio_set_value': 'value is 1',
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}
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"""
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_status_all_generic(u_boot_console):
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"""Test the 'gpio status' command.
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Displays all gpio pins available on the Board.
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To verify if the status of pins is displayed or not,
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the user can configure (gpio_str_count) and verify existence of certain
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pins.The details of these can be configured in 'gpio_str_n'.
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of boardenv_* (example above).User can configure any
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number of such pins and mention that count in 'gpio_str_count'.
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"""
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f = u_boot_console.config.env.get('env__gpio_dev_config',False)
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if not f:
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pytest.skip("gpio not configured")
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gpio_str_count = f['gpio_str_count']
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#Display all the GPIO ports
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cmd = 'gpio status -a'
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response = u_boot_console.run_command(cmd)
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for str_value in range(1,gpio_str_count + 1):
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assert f["gpio_str_%d" %(str_value)] in response
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_set_generic(u_boot_console):
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"""Test the 'gpio set' command.
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A specific gpio pin configured by user as output
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(mentioned in gpio_op_pin) is verified for
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'set' option
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"""
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f = u_boot_console.config.env.get('env__gpio_dev_config',False)
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if not f:
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pytest.skip("gpio not configured")
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gpio_pin_adr = f['gpio_op_pin'];
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gpio_set_value = f['gpio_set_value'];
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cmd = 'gpio set ' + gpio_pin_adr
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response = u_boot_console.run_command(cmd)
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good_response = gpio_set_value
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assert good_response in response
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_clear_generic(u_boot_console):
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"""Test the 'gpio clear' command.
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A specific gpio pin configured by user as output
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(mentioned in gpio_op_pin) is verified for
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'clear' option
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"""
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f = u_boot_console.config.env.get('env__gpio_dev_config',False)
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if not f:
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pytest.skip("gpio not configured")
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gpio_pin_adr = f['gpio_op_pin'];
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gpio_clear_value = f['gpio_clear_value'];
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cmd = 'gpio clear ' + gpio_pin_adr
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response = u_boot_console.run_command(cmd)
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good_response = gpio_clear_value
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assert good_response in response
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_toggle_generic(u_boot_console):
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"""Test the 'gpio toggle' command.
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A specific gpio pin configured by user as output
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(mentioned in gpio_op_pin) is verified for
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'toggle' option
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"""
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f = u_boot_console.config.env.get('env__gpio_dev_config',False)
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if not f:
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pytest.skip("gpio not configured")
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gpio_pin_adr = f['gpio_op_pin'];
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gpio_set_value = f['gpio_set_value'];
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gpio_clear_value = f['gpio_clear_value'];
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cmd = 'gpio set ' + gpio_pin_adr
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response = u_boot_console.run_command(cmd)
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good_response = gpio_set_value
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assert good_response in response
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cmd = 'gpio toggle ' + gpio_pin_adr
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response = u_boot_console.run_command(cmd)
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good_response = gpio_clear_value
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assert good_response in response
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@pytest.mark.buildconfigspec('cmd_gpio')
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def test_gpio_input_generic(u_boot_console):
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"""Test the 'gpio input' command.
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Specific gpio pins configured by user as input
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(mentioned in gpio_ip_pin_set and gpio_ip_pin_clear)
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is verified for logic '1' and logic '0' states
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"""
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f = u_boot_console.config.env.get('env__gpio_dev_config',False)
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if not f:
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pytest.skip("gpio not configured")
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gpio_pin_adr = f['gpio_ip_pin_clear'];
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gpio_clear_value = f['gpio_clear_value'];
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cmd = 'gpio input ' + gpio_pin_adr
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response = u_boot_console.run_command(cmd)
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good_response = gpio_clear_value
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assert good_response in response
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gpio_pin_adr = f['gpio_ip_pin_set'];
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gpio_set_value = f['gpio_set_value'];
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cmd = 'gpio input ' + gpio_pin_adr
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response = u_boot_console.run_command(cmd)
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good_response = gpio_set_value
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assert good_response in response
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