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1 // Copyright 2021 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 //     https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14 
15 #include "FreeRTOS.h"
16 #include "pw_thread/detached_thread.h"
17 #include "pw_thread/thread.h"
18 #include "pw_thread_freertos/context.h"
19 #include "pw_thread_freertos/options.h"
20 
21 namespace pw::system {
22 
23 // Low to high priorities.
24 enum class ThreadPriority : UBaseType_t {
25   kWorkQueue = tskIDLE_PRIORITY + 1,
26   // TODO(amontanez): These should ideally be at different priority levels, but
27   // there's synchronization issues when they are.
28   kLog = kWorkQueue,
29   kRpc = kWorkQueue,
30   kNumPriorities,
31 };
32 
33 static_assert(static_cast<UBaseType_t>(ThreadPriority::kNumPriorities) <=
34               configMAX_PRIORITIES);
35 
36 static constexpr size_t kLogThreadStackWords = 1024;
37 static thread::freertos::StaticContextWithStack<kLogThreadStackWords>
38     log_thread_context;
LogThreadOptions()39 const thread::Options& LogThreadOptions() {
40   static constexpr auto options =
41       pw::thread::freertos::Options()
42           .set_name("LogThread")
43           .set_static_context(log_thread_context)
44           .set_priority(static_cast<UBaseType_t>(ThreadPriority::kLog));
45   return options;
46 }
47 
48 static constexpr size_t kRpcThreadStackWords = 512;
49 static thread::freertos::StaticContextWithStack<kRpcThreadStackWords>
50     rpc_thread_context;
RpcThreadOptions()51 const thread::Options& RpcThreadOptions() {
52   static constexpr auto options =
53       pw::thread::freertos::Options()
54           .set_name("RpcThread")
55           .set_static_context(rpc_thread_context)
56           .set_priority(static_cast<UBaseType_t>(ThreadPriority::kRpc));
57   return options;
58 }
59 
60 static constexpr size_t kWorkQueueThreadStackWords = 512;
61 static thread::freertos::StaticContextWithStack<kWorkQueueThreadStackWords>
62     work_queue_thread_context;
WorkQueueThreadOptions()63 const thread::Options& WorkQueueThreadOptions() {
64   static constexpr auto options =
65       pw::thread::freertos::Options()
66           .set_name("WorkQueueThread")
67           .set_static_context(work_queue_thread_context)
68           .set_priority(static_cast<UBaseType_t>(ThreadPriority::kWorkQueue));
69   return options;
70 }
71 
72 }  // namespace pw::system
73