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67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBED_ERROR_H
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#define MBED_ERROR_H
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/** To generate a fatal compile-time error, you can use the pre-processor #error directive.
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*
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* @code
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* #error "That shouldn't have happened!"
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* @endcode
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*
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* If the compiler evaluates this line, it will report the error and stop the compile.
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*
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* For example, you could use this to check some user-defined compile-time variables:
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*
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* @code
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* #define NUM_PORTS 7
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* #if (NUM_PORTS > 4)
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* #error "NUM_PORTS must be less than 4"
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* #endif
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* @endcode
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*
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* Reporting Run-Time Errors:
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* To generate a fatal run-time error, you can use the mbed error() function.
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*
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* @code
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* error("That shouldn't have happened!");
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* @endcode
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*
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* If the mbed running the program executes this function, it will print the
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* message via the USB serial port, and then die with the blue lights of death!
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*
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* The message can use printf-style formatting, so you can report variables in the
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* message too. For example, you could use this to check a run-time condition:
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*
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* @code
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* if(x >= 5) {
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* error("expected x to be less than 5, but got %d", x);
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* }
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* #endcode
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void error(const char* format, ...);
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#ifdef __cplusplus
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}
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#endif
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#endif
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