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Code for measuring the signal with a specified length and sampling rate, and saving it on a SD card.
Audio/TestAudio.h
- Committer:
- msamadani
- Date:
- 2017-10-05
- Revision:
- 2:8c5b6522139f
- Parent:
- 0:c05b00be2229
File content as of revision 2:8c5b6522139f:
/* * Copyright 2013 Embedded Artists AB * * 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 * * http://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. */ #ifndef TESTAUDIO_H #define TESTAUDIO_H #include "WM8731.h" #include "I2S.h" #define ECHOLENGTH 600 /** * Test the WM8731 audio codec and the audio connectors on * the LPC4088 Experiment Base Board */ class TestAudio { public: /** * Create an interface to the audio codec */ TestAudio(); /** * Test the audio * * @return true if the test was successful; otherwise false */ bool runTest(); private: /** * Callback function for I2S */ void echo(void); WM8731 _codec; I2S _i2sTx; I2S _i2sRx; AnalogIn _aIn; int _waveIdx; int _echoBufPtr; int _echoBuf[ECHOLENGTH]; int _txBuf[16]; int _rxBuf[16]; }; #endif