CQエレクトロニクス・セミナ「実習・マイコンを動かしながら学ぶディジタル・フィルタ」で使うプログラムを,入力として STM32F746 の内蔵 ADC を使うように変更したもの. http://seminar.cqpub.co.jp/ccm/ES18-0020
Dependencies: mbed Array_Matrix BSP_DISCO_F746NG LCD_DISCO_F746NG TS_DISCO_F746NG
F746_SAI_IO_New/SAI_InOut.hpp
- Committer:
- MikamiUitOpen
- Date:
- 2017-10-07
- Revision:
- 0:ab7a35d87173
File content as of revision 0:ab7a35d87173:
//----------------------------------------------------------- // SaiIO class (Header) // 2017/03/17, Copyright (c) 2017 MIKAMI, Naoki //----------------------------------------------------------- #ifndef F746_SAI_IO_HPP #define F746_SAI_IO_HPP #include "mbed.h" #include "stm32746g_discovery_audio.h" #include "BSP_AudioIn_Overwrite.hpp" #include "BSP_AudioOut_Overwrite.hpp" #include "Array.hpp" namespace Mikami { class SaiIO { public: enum InOutBoth { INPUT, // input only OUTPUT, // output only BOTH }; // input and output // Constructor // inputDevice: INPUT_DEVICE_DIGITAL_MICROPHONE_2 or // INPUT_DEVICE_INPUT_LINE_1 // inputDevice == 0 : not use input device SaiIO(InOutBoth ioBoth, int size, int fs, uint16_t inputDevice = 0); virtual ~SaiIO() {} int32_t GetLength() { return nData_; } void RecordIn(); // sw = 0: DIGITAL_MICROPHONE_2 // 1: LINE_1 void SwitchInputDevice(int sw); bool IsCaptured(); // Input using SAI void Input(int16_t &xL, int16_t &xR) { (this->*InputFp)(xL, xR); } void StopIn() { BSP_AUDIO_IN_Stop(CODEC_PDWN_SW); } void PauseIn() { BSP_AUDIO_IN_Pause(); } void ResumeIn() { BSP_AUDIO_IN_Resume(); } void PlayOut(); bool IsXferred(); // Output using SAI void Output(int16_t xL, int16_t xR); void StopOut() { BSP_AUDIO_OUT_Stop(CODEC_PDWN_SW); } void PauseOut() { BSP_AUDIO_OUT_Pause(); } void ResumeOut() { BSP_AUDIO_OUT_Resume(); } // IF you use both input and output of SAI, // you can use following function bool IsCompleted() { return IsCaptured() && IsXferred(); } // Following two member functions are called from // callback functions in "BSP_AudioIn_Overwrite.cpp" static void Captured1st() { Captured(0); } static void Captured2nd() { Captured(bufferSize_/2); } // Following two member functions are called from // callback functions in "BSP_AudioOut_Overwrite.cpp" static void FillBuffer1st() { FillBuffer(0); } static void FillBuffer2nd() { FillBuffer(bufferSize_/2); } // Called form the functions in "BSP_AudioIn_Overwrite.cpp" // and "BSP_AudioOut_Overwrite.cpp" static void ErrorTrap(); private: const int FS_; const InOutBoth IOBOTH_; Array<uint16_t> inBuffer_; static Array<uint16_t> outBuffer_; static Array<uint16_t> tmp_; __IO int32_t inIndex_; __IO int32_t tmpIndex_; static int32_t nData_; static int32_t bufferSize_; static __IO bool captured_; static __IO int32_t inOffset_; static __IO bool xferred_; void InitCodec(uint16_t inputDevice); void InitInput(uint16_t inputDevice); void SetInput(); void SetOutput(); void ClearBuffer(); // This function pointer is assigned by // InputNormal() or InputReversal() void (SaiIO::*InputFp)(int16_t &, int16_t &); // For line input void InputNormal(int16_t &xL, int16_t &xR); // For MEMS microphone input void InputReversal(int16_t &xL, int16_t &xR); static void Captured(int32_t offset); static void FillBuffer(uint32_t offset); }; } #endif // F746_SAI_IO_HPP