blob: 1b1a9832ad714790358f5f726ae4c98d8c79ef6b [file] [log] [blame]
// Copyright 2021 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
// 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_assert/check.h"
#include "pw_bloat/bloat_this_binary.h"
#include "pw_log/log.h"
#include "pw_router/egress_function.h"
#include "pw_router/static_router.h"
#include "pw_sys_io/sys_io.h"
namespace {
struct BasicPacket {
static constexpr uint32_t kMagic = 0x8badf00d;
constexpr BasicPacket(uint32_t addr, uint64_t data)
: magic(kMagic), address(addr), payload(data) {}
uint32_t magic;
uint32_t address;
uint64_t payload;
} // namespace
// All the new router-specific stuff.
namespace {
class BasicPacketParser : public pw::router::PacketParser {
constexpr BasicPacketParser() : packet_(nullptr) {}
bool Parse(pw::ConstByteSpan packet) final {
packet_ = reinterpret_cast<const BasicPacket*>(;
return packet_->magic == BasicPacket::kMagic;
std::optional<uint32_t> GetDestinationAddress() const final {
return packet_->address;
const BasicPacket* packet_;
pw::router::EgressFunction sys_io_egress(+[](pw::ConstByteSpan packet,
const pw::router::PacketParser&) {
return pw::sys_io::WriteBytes(packet).status();
constexpr pw::router::StaticRouter::Route routes[] = {{1, sys_io_egress}};
pw::router::StaticRouter router(routes);
} // namespace
int main() {
// Ensure we are paying the cost for log and assert.
BasicPacket packet(0x1, 0x2);
PW_CHECK_UINT_EQ(packet.magic, BasicPacket::kMagic, "Some CHECK logic");
PW_LOG_INFO("Packet has address %u", static_cast<unsigned>(packet.address));
PW_LOG_INFO("pw_StatusString %s", pw::OkStatus().str());
std::array<std::byte, sizeof(BasicPacket)> packet_buffer;
BasicPacketParser parser;
while (true) {
router.RoutePacket(packet_buffer, parser);
return static_cast<int>(packet.payload);