1 files changed, 31 insertions, 0 deletions
diff --git a/pw_chrono_freertos/public/pw_chrono_freertos/config.h b/pw_chrono_freertos/public/pw_chrono_freertos/config.h
new file mode 100644
index 000000000..d51c3e1d7
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+++ b/pw_chrono_freertos/public/pw_chrono_freertos/config.h
@@ -0,0 +1,31 @@
+// Copyright 2020 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.
+// Configuration macros for the tokenizer module.
+#pragma once
+
+#include <assert.h>
+
+#include "FreeRTOS.h"
+
+// Because the SystemClock::now() implementation requires the user to invoke it
+// more than once per overflow period, the max timeout is set to ensure that
+// blocking indefinitely on a single primitive will meet this constraint with
+// margin (i.e. more than twice per overflow).
+#ifndef PW_CHRONO_FREERTOS_CFG_MAX_TIMEOUT
+#define PW_CHRONO_FREERTOS_CFG_MAX_TIMEOUT (portMAX_DELAY / 3)
+#endif  // PW_CHRONO_FREERTOS_CFG_MAX_TIMEOUT
+
+static_assert((PW_CHRONO_FREERTOS_CFG_MAX_TIMEOUT > 0) &&
+                  (PW_CHRONO_FREERTOS_CFG_MAX_TIMEOUT <= portMAX_DELAY),
+              "Invalid MAX timeout configuration");