# Copyright 2023 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

# BUILD.bazel file for stm32xxx_hal_driver.

# buildifier: disable=module-docstring
# Must point to a cc_library exposing a header named stm32f4xx_hal_conf.h (or
# similar for other families) that contains the HAL configuration
label_flag(
    name = "hal_config",
    build_setting_default = ":unspecified",
)

# May point to a non-default implementation of timebase.
label_flag(
    name = "timebase",
    build_setting_default = ":default_timebase",
)

# Should point to the corresponding cmsis_device library. Hidden behind a label
# flag so that it can be overriden in projects that build for more than one
# family of STM processors.
label_flag(
    name = "cmsis_device",
    build_setting_default = "@cmsis_device",
)

label_flag(
    name = "cmsis_init",
    build_setting_default = "@cmsis_device//:default_cmsis_init",
)

# Special target used as a default value of the hal_config label_flag. It's not
# compatible with any platform: To use Pigweed's STM32Cube integration, you
# must provide a hal_config.
cc_library(
    name = "unspecified",
    target_compatible_with = ["@platforms//:incompatible"],
)

_DISABLED_WARNINGS = [
    "-Wno-unused-parameter",
    "-Wno-redundant-decls",
    "-Wno-sign-compare",
    "-Wno-undef",
    "-Wno-implicit-function-declaration",
    "-Wno-switch-enum",
]

cc_library(
    name = "default_timebase",
    srcs = glob(["Src/*_hal_timebase_tim_template.c"]),
    copts = _DISABLED_WARNINGS,
    deps = [":hal_driver_without_timebase"],
)

cc_library(
    name = "hal_driver",
    copts = _DISABLED_WARNINGS,
    deps = [
        ":hal_driver_without_timebase",
        ":timebase",
    ],
)

cc_library(
    name = "hal_driver_without_timebase",
    srcs = glob(
        [
            "Src/*.c",
            "Src/Legacy/*.c",
        ],
        exclude = ["Src/*_template.c"],
    ),
    copts = _DISABLED_WARNINGS,
    deps = [
        ":cmsis_device",
        ":cmsis_init",
        ":hal_headers",
    ],
)

cc_library(
    name = "hal_headers",
    hdrs = glob(
        [
            "Inc/*.h",
            "Inc/Legacy/*.h",
        ],
        exclude = [
            # Excluded because implementers may want to override this template.
            "Inc/*_hal_conf_template.h",
        ],
    ),
    copts = _DISABLED_WARNINGS,
    defines = [
        "USE_HAL_DRIVER",
    ],
    includes = [
        "Inc",
        "Inc/Legacy",
    ],
    deps = [
        ":cmsis_device",
        ":hal_config",
    ],
)