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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
Diff: F746_SAI_IO_New/SAI_InOut.cpp
- Revision:
- 2:dd48e1e59daa
- Parent:
- 1:501a83a5ee9d
--- a/F746_SAI_IO_New/SAI_InOut.cpp Wed Nov 08 11:43:52 2017 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,197 +0,0 @@ -//----------------------------------------------------------- -// SaiIO class -// BSP_DISCO_F746NG Rev.9 に合わせて変更 -// InitInput() の内容を一部変更(変更前の部分はコメントアウト) -// -// 2017/09/17, Copyright (c) 2017 MIKAMI, Naoki -//----------------------------------------------------------- - -#include "SAI_InOut.hpp" - -namespace Mikami -{ - // Constructor - SaiIO::SaiIO(InOutBoth ioBoth, int size, int fs, - uint16_t inputDevice) - : FS_(fs), IOBOTH_(ioBoth) - { - nData_ = size; - bufferSize_ = (size*2)*2; - - if (ioBoth != OUTPUT) - { - inBuffer_.SetSize((size*2)*2); - inOffset_ = 0; - captured_ = false; - } - if (ioBoth != INPUT) - { - outBuffer_.SetSize((size*2)*2); - tmp_.SetSize(size*2); - tmpIndex_ = 0; - xferred_ = false; - ClearBuffer(); - } - InitCodec(inputDevice); - } - - // Input start - void SaiIO::RecordIn() - { - if (BSP_AUDIO_IN_Record(inBuffer_, bufferSize_) == AUDIO_ERROR) - ErrorTrap(); - } - - // Switching input device and run - void SaiIO::SwitchInputDevice(int sw) - { - uint16_t dev = (sw == 0) ? - INPUT_DEVICE_DIGITAL_MICROPHONE_2 - : INPUT_DEVICE_INPUT_LINE_1; - InitInput(dev); - ClearBuffer(); - RecordIn(); - if (IOBOTH_ == BOTH) PlayOut(); - } - - // If captured, return true - bool SaiIO::IsCaptured() - { - if (!captured_) return false; - - inIndex_ = inOffset_; - captured_ = false; - return true; - } - - void SaiIO::PlayOut() - { - ClearBuffer(); - BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02); - if (BSP_AUDIO_OUT_Play(outBuffer_, bufferSize_*AUDIODATA_SIZE) - == AUDIO_ERROR) - ErrorTrap(); - } - - // Return true if transfer completion to output - bool SaiIO::IsXferred() - { - if (!xferred_) return false; - - tmpIndex_ = 0; - xferred_ = false; - return true; - } - - void SaiIO::Output(int16_t xL, int16_t xR) - { - tmp_[tmpIndex_++] = xL; // Left - tmp_[tmpIndex_++] = xR; // Right - } - - void SaiIO::ErrorTrap() - { - DigitalOut led1(LED1); - fprintf(stderr, "\r\n#### ERROR ####\r\n"); - while(true) - { - led1 = !led1; - wait_ms(250); - } - } - - // Initialize audio input and output - void SaiIO::InitCodec(uint16_t inputDevice) - { - if (inputDevice != 0) InitInput(inputDevice); - - if (IOBOTH_ == OUTPUT) - if (BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_HEADPHONE, - 100, FS_) == AUDIO_ERROR) - ErrorTrap(); - - if (IOBOTH_ != OUTPUT) SetInput(); - if (IOBOTH_ != INPUT) SetOutput(); - } - - void SaiIO::InitInput(uint16_t inputDevice) - { - int audioInVolume = (inputDevice == INPUT_DEVICE_INPUT_LINE_1) ? - 70 : 90; - InputFp = (inputDevice == INPUT_DEVICE_INPUT_LINE_1) ? - &SaiIO::InputNormal : &SaiIO::InputReversal; - if (IOBOTH_ == BOTH) -/* - if (BSP_AUDIO_IN_OUT_Init(inputDevice, OUTPUT_DEVICE_HEADPHONE, - audioInVolume, FS_) == AUDIO_ERROR) -*/ - if (BSP_AUDIO_IN_OUT_Init(inputDevice, OUTPUT_DEVICE_HEADPHONE, - FS_, DEFAULT_AUDIO_IN_BIT_RESOLUTION, - DEFAULT_AUDIO_IN_CHANNEL_NBR) == AUDIO_ERROR) - ErrorTrap(); - - if (IOBOTH_ == INPUT) - if (BSP_AUDIO_IN_Init(inputDevice, - audioInVolume, FS_) == AUDIO_ERROR) - ErrorTrap(); - } - - void SaiIO::SetInput() - { - NVIC_SetVector(AUDIO_IN_SAIx_DMAx_IRQ, - (uint32_t)AUDIO_IN_SAIx_DMAx_IRQHandler); - } - - void SaiIO::SetOutput() - { - NVIC_SetVector(AUDIO_OUT_SAIx_DMAx_IRQ, - (uint32_t)AUDIO_OUT_SAIx_DMAx_IRQHandler); - BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02); - } - - void SaiIO::ClearBuffer() - { - if (IOBOTH_ != OUTPUT) - for (int n=0; n<bufferSize_; n++) inBuffer_[n] = 0; - for (int n=0; n<bufferSize_; n++) outBuffer_[n] = 0; - for (int n=0; n<nData_*2; n++) tmp_[n] = 0; - } - - // For line input - void SaiIO::InputNormal(int16_t &xL, int16_t &xR) - { - xL = inBuffer_[inIndex_++]; - xR = inBuffer_[inIndex_++]; - } - - // For MEMS microphone input - void SaiIO::InputReversal(int16_t &xL, int16_t &xR) - { - xR = inBuffer_[inIndex_++]; - xL = inBuffer_[inIndex_++]; - } - - void SaiIO::Captured(int32_t offset) - { - captured_ = true; - inOffset_ = offset; - } - - void SaiIO::FillBuffer(uint32_t offset) - { - int k = offset; - for (int n=0; n<nData_*2; n++) - outBuffer_[k++] = tmp_[n]; - xferred_ = true; - } - - int32_t SaiIO::nData_; - int32_t SaiIO::bufferSize_; - - __IO bool SaiIO::captured_; - __IO int32_t SaiIO::inOffset_; - - Array<uint16_t> SaiIO::outBuffer_; - Array<uint16_t> SaiIO::tmp_; - __IO bool SaiIO::xferred_; -}