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// 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.
#include "pw_spi_mcuxpresso/spi.h"
#include "board.h"
#include "gtest/gtest.h"
#include "pw_bytes/array.h"
#include "pw_spi/device.h"
#include "pw_status/status.h"
namespace pw::spi {
namespace {
auto* spi_base = SPI14;
constexpr auto kClockNumber = 14;
constexpr uint32_t baud_rate_bps = 10000000;
constexpr Config configuration{.polarity = ClockPolarity::kActiveHigh,
.phase = ClockPhase::kRisingEdge,
.bits_per_word = BitsPerWord(8),
.bit_order = BitOrder::kMsbFirst};
TEST(Configure, ConfigurationSuccess) {
McuxpressoInitiator spi(
spi_base, CLOCK_GetFlexcommClkFreq(kClockNumber), baud_rate_bps);
auto status = spi.Configure(configuration);
EXPECT_EQ(status, OkStatus());
}
TEST(ReadWrite, PollingWriteSuccess) {
const auto blocking = true;
constexpr auto source = bytes::Array<0x01, 0x02, 0x03, 0x04, 0x05>();
static auto destination = bytes::Array<0xff, 0xff, 0xff, 0xff, 0xff>();
McuxpressoInitiator spi(spi_base,
CLOCK_GetFlexcommClkFreq(kClockNumber),
baud_rate_bps,
blocking);
auto status = spi.Configure(configuration);
ASSERT_EQ(status, OkStatus());
status = spi.WriteRead(source, destination);
EXPECT_EQ(status, OkStatus());
}
TEST(ReadWrite, IRQWriteSuccess) {
const auto blocking = false;
constexpr auto source = bytes::Array<0x01, 0x02, 0x03, 0x04, 0x05>();
static auto destination = bytes::Array<0xff, 0xff, 0xff, 0xff, 0xff>();
McuxpressoInitiator spi(spi_base,
CLOCK_GetFlexcommClkFreq(kClockNumber),
baud_rate_bps,
blocking);
auto status = spi.Configure(configuration);
ASSERT_EQ(status, OkStatus());
status = spi.WriteRead(source, destination);
EXPECT_EQ(status, OkStatus());
}
TEST(ReadWrite, WriteOnlySuccess) {
const auto blocking = false;
constexpr auto source = bytes::Array<0x01, 0x02, 0x03, 0x04, 0x05>();
McuxpressoInitiator spi(spi_base,
CLOCK_GetFlexcommClkFreq(kClockNumber),
baud_rate_bps,
blocking);
auto status = spi.Configure(configuration);
ASSERT_EQ(status, OkStatus());
status = spi.WriteRead(source, {});
EXPECT_EQ(status, OkStatus());
}
TEST(ReadWrite, UseDeviceWriteOnlySuccess) {
const auto blocking = false;
constexpr auto source = bytes::Array<0x01, 0x02, 0x03, 0x04, 0x05>();
McuxpressoInitiator initiator(spi_base,
CLOCK_GetFlexcommClkFreq(kClockNumber),
baud_rate_bps,
blocking);
McuxpressoChipSelector spi_selector(initiator, 0);
sync::VirtualMutex spi_lock;
sync::Borrowable<Initiator> spi(initiator, spi_lock);
Device device(spi, configuration, spi_selector);
EXPECT_EQ(device.WriteRead(source, {}), OkStatus());
}
} // namespace
} // namespace pw::spi
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