558 lines
18 KiB
C++
Executable file
558 lines
18 KiB
C++
Executable file
/* Audio Library for Teensy 3.X
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* Copyright (c) 2016, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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//Adapted to PT8211, Frank Bösing, Ben-Rheinland
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#include <Arduino.h>
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#include "output_pt8211.h"
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#include "memcpy_audio.h"
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#include "utility/imxrt_hw.h"
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audio_block_t * AudioOutputPT8211::block_left_1st = NULL;
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audio_block_t * AudioOutputPT8211::block_right_1st = NULL;
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audio_block_t * AudioOutputPT8211::block_left_2nd = NULL;
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audio_block_t * AudioOutputPT8211::block_right_2nd = NULL;
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uint16_t AudioOutputPT8211::block_left_offset = 0;
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uint16_t AudioOutputPT8211::block_right_offset = 0;
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bool AudioOutputPT8211::update_responsibility = false;
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES*4];
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#else
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static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
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#endif
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DMAChannel AudioOutputPT8211::dma(false);
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void AudioOutputPT8211::begin(void)
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{
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dma.begin(true); // Allocate the DMA channel first
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block_left_1st = NULL;
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block_right_1st = NULL;
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// TODO: should we set & clear the I2S_TCSR_SR bit here?
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config_i2s();
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#if defined(KINETISK)
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CORE_PIN22_CONFIG = PORT_PCR_MUX(6); // pin 22, PTC1, I2S0_TXD0
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dma.TCD->SADDR = i2s_tx_buffer;
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dma.TCD->SOFF = 2;
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dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1);
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dma.TCD->NBYTES_MLNO = 2;
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dma.TCD->SLAST = -sizeof(i2s_tx_buffer);
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dma.TCD->DADDR = &I2S0_TDR0;
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dma.TCD->DOFF = 0;
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dma.TCD->CITER_ELINKNO = sizeof(i2s_tx_buffer) / 2;
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dma.TCD->DLASTSGA = 0;
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dma.TCD->BITER_ELINKNO = sizeof(i2s_tx_buffer) / 2;
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dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR;
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dma.triggerAtHardwareEvent(DMAMUX_SOURCE_I2S0_TX);
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update_responsibility = update_setup();
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dma.attachInterrupt(isr);
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dma.enable();
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I2S0_TCSR |= I2S_TCSR_TE | I2S_TCSR_BCE | I2S_TCSR_FRDE | I2S_TCSR_FR;
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return;
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#elif defined(__IMXRT1052__) || defined(__IMXRT1062__)
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#if defined(__IMXRT1052__)
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CORE_PIN6_CONFIG = 3; //1:TX_DATA0
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#elif defined(__IMXRT1062__)
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CORE_PIN7_CONFIG = 3; //1:TX_DATA0
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#endif
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dma.TCD->SADDR = i2s_tx_buffer;
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dma.TCD->SOFF = 2;
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dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1);
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dma.TCD->NBYTES_MLNO = 2;
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dma.TCD->SLAST = -sizeof(i2s_tx_buffer);
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dma.TCD->DOFF = 0;
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dma.TCD->CITER_ELINKNO = sizeof(i2s_tx_buffer) / 2;
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dma.TCD->DLASTSGA = 0;
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dma.TCD->BITER_ELINKNO = sizeof(i2s_tx_buffer) / 2;
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dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR;
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dma.TCD->DADDR = (void *)((uint32_t)&I2S1_TDR0);
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dma.triggerAtHardwareEvent(DMAMUX_SOURCE_SAI1_TX);
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I2S1_RCSR |= I2S_RCSR_RE;
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I2S1_TCSR |= I2S_TCSR_TE | I2S_TCSR_BCE | I2S_TCSR_FRDE;
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update_responsibility = update_setup();
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dma.attachInterrupt(isr);
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dma.enable();
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return;
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#endif
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}
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void AudioOutputPT8211::isr(void)
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{
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int16_t *dest;
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audio_block_t *blockL, *blockR;
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uint32_t saddr, offsetL, offsetR;
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saddr = (uint32_t)(dma.TCD->SADDR);
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dma.clearInterrupt();
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if (saddr < (uint32_t)i2s_tx_buffer + sizeof(i2s_tx_buffer) / 2) {
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// DMA is transmitting the first half of the buffer
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// so we must fill the second half
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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dest = (int16_t *)&i2s_tx_buffer[(AUDIO_BLOCK_SAMPLES/2)*4];
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#else
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dest = (int16_t *)&i2s_tx_buffer[AUDIO_BLOCK_SAMPLES/2];
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#endif
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if (AudioOutputPT8211::update_responsibility) AudioStream::update_all();
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} else {
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// DMA is transmitting the second half of the buffer
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// so we must fill the first half
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dest = (int16_t *)i2s_tx_buffer;
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}
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blockL = AudioOutputPT8211::block_left_1st;
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blockR = AudioOutputPT8211::block_right_1st;
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offsetL = AudioOutputPT8211::block_left_offset;
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offsetR = AudioOutputPT8211::block_right_offset;
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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static int32_t oldL = 0;
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static int32_t oldR = 0;
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#endif
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if (blockL && blockR) {
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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#if defined(AUDIO_PT8211_INTERPOLATION_LINEAR)
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for (int i=0; i< AUDIO_BLOCK_SAMPLES / 2; i++, offsetL++, offsetR++) {
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int32_t valL = blockL->data[offsetL];
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int32_t valR = blockR->data[offsetR];
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int32_t nL = (oldL+valL) >> 1;
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int32_t nR = (oldR+valR) >> 1;
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*(dest+0) = (oldL+nL) >> 1;
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*(dest+1) = (oldR+nR) >> 1;
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*(dest+2) = nL;
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*(dest+3) = nR;
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*(dest+4) = (nL+valL) >> 1;
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*(dest+5) = (nR+valR) >> 1;
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*(dest+6) = valL;
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*(dest+7) = valR;
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dest+=8;
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oldL = valL;
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oldR = valR;
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}
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#elif defined(AUDIO_PT8211_INTERPOLATION_CIC)
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for (int i=0; i< AUDIO_BLOCK_SAMPLES / 2; i++, offsetL++, offsetR++) {
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int32_t valL = blockL->data[offsetL];
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int32_t valR = blockR->data[offsetR];
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int32_t combL[3] = {0};
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static int32_t combLOld[2] = {0};
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int32_t combR[3] = {0};
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static int32_t combROld[2] = {0};
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combL[0] = valL - oldL;
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combR[0] = valR - oldR;
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combL[1] = combL[0] - combLOld[0];
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combR[1] = combR[0] - combROld[0];
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combL[2] = combL[1] - combLOld[1];
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combR[2] = combR[1] - combROld[1];
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// combL[2] now holds input val
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// combR[2] now holds input val
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oldL = valL;
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oldR = valR;
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combLOld[0] = combL[0];
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combROld[0] = combR[0];
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combLOld[1] = combL[1];
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combROld[1] = combR[1];
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for (int j = 0; j < 4; j++) {
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int32_t integrateL[3];
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int32_t integrateR[3];
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static int32_t integrateLOld[3] = {0};
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static int32_t integrateROld[3] = {0};
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integrateL[0] = ( (j==0) ? (combL[2]) : (0) ) + integrateLOld[0];
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integrateR[0] = ( (j==0) ? (combR[2]) : (0) ) + integrateROld[0];
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integrateL[1] = integrateL[0] + integrateLOld[1];
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integrateR[1] = integrateR[0] + integrateROld[1];
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integrateL[2] = integrateL[1] + integrateLOld[2];
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integrateR[2] = integrateR[1] + integrateROld[2];
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// integrateL[2] now holds j'th upsampled value
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// integrateR[2] now holds j'th upsampled value
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*(dest+j*2) = integrateL[2] >> 4;
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*(dest+j*2+1) = integrateR[2] >> 4;
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integrateLOld[0] = integrateL[0];
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integrateROld[0] = integrateR[0];
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integrateLOld[1] = integrateL[1];
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integrateROld[1] = integrateR[1];
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integrateLOld[2] = integrateL[2];
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integrateROld[2] = integrateR[2];
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}
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dest+=8;
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}
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#else
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#error no interpolation method defined for oversampling.
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#endif //defined(AUDIO_PT8211_INTERPOLATION_LINEAR)
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#else
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memcpy_tointerleaveLR(dest, blockL->data + offsetL, blockR->data + offsetR);
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offsetL += AUDIO_BLOCK_SAMPLES / 2;
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offsetR += AUDIO_BLOCK_SAMPLES / 2;
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#endif //defined(AUDIO_PT8211_OVERSAMPLING)
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} else if (blockL) {
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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#if defined(AUDIO_PT8211_INTERPOLATION_LINEAR)
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for (int i=0; i< AUDIO_BLOCK_SAMPLES / 2; i++, offsetL++) {
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int32_t val = blockL->data[offsetL];
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int32_t n = (oldL+val) >> 1;
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*(dest+0) = (oldL+n) >> 1;
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*(dest+1) = 0;
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*(dest+2) = n;
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*(dest+3) = 0;
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*(dest+4) = (n+val) >> 1;
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*(dest+5) = 0;
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*(dest+6) = val;
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*(dest+7) = 0;
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dest+=8;
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oldL = val;
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}
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#elif defined(AUDIO_PT8211_INTERPOLATION_CIC)
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for (int i=0; i< AUDIO_BLOCK_SAMPLES / 2; i++, offsetL++, offsetR++) {
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int32_t valL = blockL->data[offsetL];
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int32_t combL[3] = {0};
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static int32_t combLOld[2] = {0};
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combL[0] = valL - oldL;
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combL[1] = combL[0] - combLOld[0];
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combL[2] = combL[1] - combLOld[1];
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// combL[2] now holds input val
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combLOld[0] = combL[0];
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combLOld[1] = combL[1];
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for (int j = 0; j < 4; j++) {
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int32_t integrateL[3];
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static int32_t integrateLOld[3] = {0};
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integrateL[0] = ( (j==0) ? (combL[2]) : (0) ) + integrateLOld[0];
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integrateL[1] = integrateL[0] + integrateLOld[1];
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integrateL[2] = integrateL[1] + integrateLOld[2];
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// integrateL[2] now holds j'th upsampled value
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*(dest+j*2) = integrateL[2] >> 4;
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integrateLOld[0] = integrateL[0];
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integrateLOld[1] = integrateL[1];
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integrateLOld[2] = integrateL[2];
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}
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// fill right channel with zeros:
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*(dest+1) = 0;
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*(dest+3) = 0;
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*(dest+5) = 0;
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*(dest+7) = 0;
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dest+=8;
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oldL = valL;
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}
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#else
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#error no interpolation method defined for oversampling.
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#endif //defined(AUDIO_PT8211_INTERPOLATION_LINEAR)
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#else
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memcpy_tointerleaveL(dest, blockL->data + offsetL);
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offsetL += (AUDIO_BLOCK_SAMPLES / 2);
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#endif //defined(AUDIO_PT8211_OVERSAMPLING)
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} else if (blockR) {
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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#if defined(AUDIO_PT8211_INTERPOLATION_LINEAR)
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for (int i=0; i< AUDIO_BLOCK_SAMPLES / 2; i++, offsetR++) {
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int32_t val = blockR->data[offsetR];
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int32_t n = (oldR+val) >> 1;
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*(dest+0) = 0;
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*(dest+1) = ((oldR+n) >> 1);
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*(dest+2) = 0;
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*(dest+3) = n;
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*(dest+4) = 0;
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*(dest+5) = ((n+val) >> 1);
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*(dest+6) = 0;
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*(dest+7) = val;
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dest+=8;
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oldR = val;
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}
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#elif defined(AUDIO_PT8211_INTERPOLATION_CIC)
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for (int i=0; i< AUDIO_BLOCK_SAMPLES / 2; i++, offsetL++, offsetR++) {
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int32_t valR = blockR->data[offsetR];
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int32_t combR[3] = {0};
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static int32_t combROld[2] = {0};
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combR[0] = valR - oldR;
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combR[1] = combR[0] - combROld[0];
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combR[2] = combR[1] - combROld[1];
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// combR[2] now holds input val
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combROld[0] = combR[0];
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combROld[1] = combR[1];
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for (int j = 0; j < 4; j++) {
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int32_t integrateR[3];
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static int32_t integrateROld[3] = {0};
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integrateR[0] = ( (j==0) ? (combR[2]) : (0) ) + integrateROld[0];
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integrateR[1] = integrateR[0] + integrateROld[1];
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integrateR[2] = integrateR[1] + integrateROld[2];
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// integrateR[2] now holds j'th upsampled value
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*(dest+j*2+1) = integrateR[2] >> 4;
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integrateROld[0] = integrateR[0];
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integrateROld[1] = integrateR[1];
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integrateROld[2] = integrateR[2];
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}
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// fill left channel with zeros:
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*(dest+0) = 0;
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*(dest+2) = 0;
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*(dest+4) = 0;
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*(dest+6) = 0;
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dest+=8;
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oldR = valR;
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}
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#else
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#error no interpolation method defined for oversampling.
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#endif //defined(AUDIO_PT8211_INTERPOLATION_LINEAR)
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#else
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memcpy_tointerleaveR(dest, blockR->data + offsetR);
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offsetR += AUDIO_BLOCK_SAMPLES / 2;
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#endif //defined(AUDIO_PT8211_OVERSAMPLING)
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} else {
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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memset(dest,0,AUDIO_BLOCK_SAMPLES*8);
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#else
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memset(dest,0,AUDIO_BLOCK_SAMPLES*2);
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#endif
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return;
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}
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if (offsetL < AUDIO_BLOCK_SAMPLES) {
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AudioOutputPT8211::block_left_offset = offsetL;
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} else {
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AudioOutputPT8211::block_left_offset = 0;
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AudioStream::release(blockL);
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AudioOutputPT8211::block_left_1st = AudioOutputPT8211::block_left_2nd;
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AudioOutputPT8211::block_left_2nd = NULL;
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}
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if (offsetR < AUDIO_BLOCK_SAMPLES) {
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AudioOutputPT8211::block_right_offset = offsetR;
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} else {
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AudioOutputPT8211::block_right_offset = 0;
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AudioStream::release(blockR);
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AudioOutputPT8211::block_right_1st = AudioOutputPT8211::block_right_2nd;
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AudioOutputPT8211::block_right_2nd = NULL;
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}
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}
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void AudioOutputPT8211::update(void)
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{
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audio_block_t *block;
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block = receiveReadOnly(0); // input 0 = left channel
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if (block) {
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__disable_irq();
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if (block_left_1st == NULL) {
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block_left_1st = block;
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block_left_offset = 0;
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__enable_irq();
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} else if (block_left_2nd == NULL) {
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block_left_2nd = block;
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__enable_irq();
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} else {
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audio_block_t *tmp = block_left_1st;
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block_left_1st = block_left_2nd;
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block_left_2nd = block;
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block_left_offset = 0;
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__enable_irq();
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release(tmp);
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}
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}
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block = receiveReadOnly(1); // input 1 = right channel
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if (block) {
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__disable_irq();
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if (block_right_1st == NULL) {
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block_right_1st = block;
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block_right_offset = 0;
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__enable_irq();
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} else if (block_right_2nd == NULL) {
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block_right_2nd = block;
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__enable_irq();
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} else {
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audio_block_t *tmp = block_right_1st;
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block_right_1st = block_right_2nd;
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block_right_2nd = block;
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block_right_offset = 0;
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__enable_irq();
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release(tmp);
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}
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}
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}
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#if defined(KINETISK)
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// MCLK needs to be 48e6 / 1088 * 256 = 11.29411765 MHz -> 44.117647 kHz sample rate
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//
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#if F_CPU == 96000000 || F_CPU == 48000000 || F_CPU == 24000000
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// PLL is at 96 MHz in these modes
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#define MCLK_MULT 2
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#define MCLK_DIV 17
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#elif F_CPU == 72000000
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#define MCLK_MULT 8
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#define MCLK_DIV 51
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#elif F_CPU == 120000000
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#define MCLK_MULT 8
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#define MCLK_DIV 85
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#elif F_CPU == 144000000
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#define MCLK_MULT 4
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#define MCLK_DIV 51
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#elif F_CPU == 168000000
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#define MCLK_MULT 8
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#define MCLK_DIV 119
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#elif F_CPU == 180000000
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#define MCLK_MULT 16
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#define MCLK_DIV 255
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#define MCLK_SRC 0
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#elif F_CPU == 192000000
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#define MCLK_MULT 1
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#define MCLK_DIV 17
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#elif F_CPU == 216000000
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#define MCLK_MULT 12
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#define MCLK_DIV 17
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#define MCLK_SRC 1
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#elif F_CPU == 240000000
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#define MCLK_MULT 2
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#define MCLK_DIV 85
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#define MCLK_SRC 0
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#elif F_CPU == 256000000
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#define MCLK_MULT 12
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#define MCLK_DIV 17
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#define MCLK_SRC 1
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#elif F_CPU == 16000000
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#define MCLK_MULT 12
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#define MCLK_DIV 17
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#else
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#error "This CPU Clock Speed is not supported by the Audio library";
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#endif
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#ifndef MCLK_SRC
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#if F_CPU >= 20000000
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#define MCLK_SRC 3 // the PLL
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#else
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#define MCLK_SRC 0 // system clock
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#endif
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#endif
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#endif
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void AudioOutputPT8211::config_i2s(void)
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{
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#if defined(KINETISK)
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SIM_SCGC6 |= SIM_SCGC6_I2S;
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SIM_SCGC7 |= SIM_SCGC7_DMA;
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SIM_SCGC6 |= SIM_SCGC6_DMAMUX;
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// if transmitter is enabled, do nothing
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if (I2S0_TCSR & I2S_TCSR_TE) return;
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// enable MCLK output
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I2S0_MCR = I2S_MCR_MICS(MCLK_SRC) | I2S_MCR_MOE;
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while (I2S0_MCR & I2S_MCR_DUF) ;
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I2S0_MDR = I2S_MDR_FRACT((MCLK_MULT-1)) | I2S_MDR_DIVIDE((MCLK_DIV-1));
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// configure transmitter
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I2S0_TMR = 0;
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I2S0_TCR1 = I2S_TCR1_TFW(1); // watermark at half fifo size
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#if defined(AUDIO_PT8211_OVERSAMPLING)
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I2S0_TCR2 = I2S_TCR2_SYNC(0) | I2S_TCR2_BCP | I2S_TCR2_MSEL(1) | I2S_TCR2_BCD | I2S_TCR2_DIV(0);
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#else
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I2S0_TCR2 = I2S_TCR2_SYNC(0) | I2S_TCR2_BCP | I2S_TCR2_MSEL(1) | I2S_TCR2_BCD | I2S_TCR2_DIV(3);
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#endif
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I2S0_TCR3 = I2S_TCR3_TCE;
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// I2S0_TCR4 = I2S_TCR4_FRSZ(1) | I2S_TCR4_SYWD(15) | I2S_TCR4_MF | I2S_TCR4_FSE | I2S_TCR4_FSP | I2S_TCR4_FSD; //TDA1543
|
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I2S0_TCR4 = I2S_TCR4_FRSZ(1) | I2S_TCR4_SYWD(15) | I2S_TCR4_MF /*| I2S_TCR4_FSE*/ | I2S_TCR4_FSP | I2S_TCR4_FSD; //PT8211
|
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I2S0_TCR5 = I2S_TCR5_WNW(15) | I2S_TCR5_W0W(15) | I2S_TCR5_FBT(15);
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|
|
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// configure pin mux for 3 clock signals
|
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CORE_PIN23_CONFIG = PORT_PCR_MUX(6); // pin 23, PTC2, I2S0_TX_FS (LRCLK)
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CORE_PIN9_CONFIG = PORT_PCR_MUX(6); // pin 9, PTC3, I2S0_TX_BCLK
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//CORE_PIN11_CONFIG = PORT_PCR_MUX(6); // pin 11, PTC6, I2S0_MCLK
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|
|
|
#elif ( defined(__IMXRT1052__) || defined(__IMXRT1062__) )
|
|
|
|
CCM_CCGR5 |= CCM_CCGR5_SAI1(CCM_CCGR_ON);
|
|
//PLL:
|
|
int fs = AUDIO_SAMPLE_RATE_EXACT;
|
|
// PLL between 27*24 = 648MHz und 54*24=1296MHz
|
|
int n1 = 4; //SAI prescaler 4 => (n1*n2) = multiple of 4
|
|
int n2 = 1 + (24000000 * 27) / (fs * 256 * n1);
|
|
|
|
double C = ((double)fs * 256 * n1 * n2) / 24000000;
|
|
int c0 = C;
|
|
int c2 = 10000;
|
|
int c1 = C * c2 - (c0 * c2);
|
|
set_audioClock(c0, c1, c2);
|
|
|
|
// clear SAI1_CLK register locations
|
|
CCM_CSCMR1 = (CCM_CSCMR1 & ~(CCM_CSCMR1_SAI1_CLK_SEL_MASK))
|
|
| CCM_CSCMR1_SAI1_CLK_SEL(2); // &0x03 // (0,1,2): PLL3PFD0, PLL5, PLL4
|
|
CCM_CS1CDR = (CCM_CS1CDR & ~(CCM_CS1CDR_SAI1_CLK_PRED_MASK | CCM_CS1CDR_SAI1_CLK_PODF_MASK))
|
|
| CCM_CS1CDR_SAI1_CLK_PRED(n1-1) // &0x07
|
|
| CCM_CS1CDR_SAI1_CLK_PODF(n2-1); // &0x3f
|
|
|
|
IOMUXC_GPR_GPR1 = (IOMUXC_GPR_GPR1 & ~(IOMUXC_GPR_GPR1_SAI1_MCLK1_SEL_MASK))
|
|
| (IOMUXC_GPR_GPR1_SAI1_MCLK_DIR | IOMUXC_GPR_GPR1_SAI1_MCLK1_SEL(0)); //Select MCLK
|
|
|
|
if (I2S1_TCSR & I2S_TCSR_TE) return;
|
|
|
|
// CORE_PIN23_CONFIG = 3; //1:MCLK
|
|
CORE_PIN21_CONFIG = 3; //1:RX_BCLK
|
|
CORE_PIN20_CONFIG = 3; //1:RX_SYNC
|
|
// CORE_PIN6_CONFIG = 3; //1:TX_DATA0
|
|
// CORE_PIN7_CONFIG = 3; //1:RX_DATA0
|
|
|
|
int rsync = 0;
|
|
int tsync = 1;
|
|
#if defined(AUDIO_PT8211_OVERSAMPLING)
|
|
int div = 0;
|
|
#else
|
|
int div = 3;
|
|
#endif
|
|
// configure transmitter
|
|
I2S1_TMR = 0;
|
|
I2S1_TCR1 = I2S_TCR1_RFW(0);
|
|
I2S1_TCR2 = I2S_TCR2_SYNC(tsync) | I2S_TCR2_BCP | I2S_TCR2_MSEL(1) | I2S_TCR2_BCD | I2S_TCR2_DIV(div);
|
|
I2S1_TCR3 = I2S_TCR3_TCE;
|
|
// I2S1_TCR4 = I2S_TCR4_FRSZ(1) | I2S_TCR4_SYWD(15) | I2S_TCR4_MF | I2S_TCR4_FSE | I2S_TCR4_FSP | I2S_TCR4_FSD; //TDA1543
|
|
I2S1_TCR4 = I2S_TCR4_FRSZ(1) | I2S_TCR4_SYWD(15) | I2S_TCR4_MF /*| I2S_TCR4_FSE*/ | I2S_TCR4_FSP | I2S_TCR4_FSD; //PT8211
|
|
I2S1_TCR5 = I2S_TCR5_WNW(15) | I2S_TCR5_W0W(15) | I2S_TCR5_FBT(15);
|
|
|
|
I2S1_RMR = 0;
|
|
//I2S1_RCSR = (1<<25); //Reset
|
|
I2S1_RCR1 = I2S_RCR1_RFW(0);
|
|
I2S1_RCR2 = I2S_RCR2_SYNC(rsync) | I2S_RCR2_BCP | I2S_RCR2_MSEL(1) | I2S_TCR2_BCD | I2S_TCR2_DIV(div);
|
|
I2S1_RCR3 = I2S_RCR3_RCE;
|
|
// I2S1_TCR4 = I2S_TCR4_FRSZ(1) | I2S_TCR4_SYWD(15) | I2S_TCR4_MF | I2S_TCR4_FSE | I2S_TCR4_FSP | I2S_TCR4_FSD; //TDA1543
|
|
I2S1_RCR4 = I2S_RCR4_FRSZ(1) | I2S_RCR4_SYWD(15) | I2S_RCR4_MF /*| I2S_RCR4_FSE*/ | I2S_RCR4_FSP | I2S_RCR4_FSD; //PT8211
|
|
I2S1_RCR5 = I2S_RCR5_WNW(15) | I2S_RCR5_W0W(15) | I2S_RCR5_FBT(15);
|
|
|
|
#endif
|
|
}
|