add output_mqs

Audio.h

 #include "output_i2s.h"
 #include "output_i2s2.h"
 #include "output_i2s_quad.h"
+#include "output_mqs.h"
 #include "output_pwm.h"
 #include "output_spdif.h"
 #include "output_pt8211.h"

keywords.txt

 AudioOutputSPDIF	KEYWORD2
 AudioOutputPT8211	KEYWORD2
 AudioOutputTDM	KEYWORD2
+AudioOutputTDM2	KEYWORD2
 AudioOutputADAT	KEYWORD2
 AudioOutputPWM	KEYWORD2
+AudioOutputMQS	KEYWORD2
 AudioOutputUSB	KEYWORD2
 AudioControlSGTL5000	KEYWORD2
 AudioControlWM8731	KEYWORD2

output_mqs.cpp

+/* Audio Library for Teensy 3.X
+ * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
+ *
+ * Development of this audio library was funded by PJRC.COM, LLC by sales of
+ * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop
+ * open source software by purchasing Teensy or other PJRC products.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, development funding notice, and this permission
+ * notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+// Frank B
+
+#if defined(__IMXRT1052__) || defined(__IMXRT1062__)
+#include <Arduino.h>
+#include "output_mqs.h"
+#include "memcpy_audio.h"
+#include "utility/imxrt_hw.h"
+
+audio_block_t * AudioOutputMQS::block_left_1st = NULL;
+audio_block_t * AudioOutputMQS::block_right_1st = NULL;
+audio_block_t * AudioOutputMQS::block_left_2nd = NULL;
+audio_block_t * AudioOutputMQS::block_right_2nd = NULL;
+uint16_t  AudioOutputMQS::block_left_offset = 0;
+uint16_t  AudioOutputMQS::block_right_offset = 0;
+bool AudioOutputMQS::update_responsibility = false;
+static uint32_t I2S3_tx_buffer[AUDIO_BLOCK_SAMPLES];
+DMAChannel AudioOutputMQS::dma(false);
+
+void AudioOutputMQS::begin(void)
+{
+	dma.begin(true); // Allocate the DMA channel first
+
+	block_left_1st = NULL;
+	block_right_1st = NULL;
+
+	config_i2s();
+
+	CORE_PIN10_CONFIG = 2;//B0_00 MQS_RIGHT
+	CORE_PIN12_CONFIG = 2;//B0_01 MQS_LEFT
+
+	dma.TCD->SADDR = I2S3_tx_buffer;
+	dma.TCD->SOFF = 2;
+	dma.TCD->ATTR = DMA_TCD_ATTR_SSIZE(1) | DMA_TCD_ATTR_DSIZE(1);
+	dma.TCD->NBYTES_MLNO = 2;
+	dma.TCD->SLAST = -sizeof(I2S3_tx_buffer);
+	dma.TCD->DOFF = 0;
+	dma.TCD->CITER_ELINKNO = sizeof(I2S3_tx_buffer) / 2;
+	dma.TCD->DLASTSGA = 0;
+	dma.TCD->BITER_ELINKNO = sizeof(I2S3_tx_buffer) / 2;
+	dma.TCD->CSR = DMA_TCD_CSR_INTHALF | DMA_TCD_CSR_INTMAJOR;
+	dma.TCD->DADDR = (void *)((uint32_t)&I2S3_TDR0 + 0);
+	dma.triggerAtHardwareEvent(DMAMUX_SOURCE_SAI3_TX);
+
+	I2S3_TCSR |= I2S_TCSR_TE | I2S_TCSR_BCE | I2S_TCSR_FRDE;
+	update_responsibility = update_setup();
+	dma.attachInterrupt(isr);
+	dma.enable();
+}
+
+void AudioOutputMQS::isr(void)
+{
+	int16_t *dest;
+	audio_block_t *blockL, *blockR;
+	uint32_t saddr, offsetL, offsetR;
+
+	saddr = (uint32_t)(dma.TCD->SADDR);
+	dma.clearInterrupt();
+	if (saddr < (uint32_t)I2S3_tx_buffer + sizeof(I2S3_tx_buffer) / 2) {
+		// DMA is transmitting the first half of the buffer
+		// so we must fill the second half
+		dest = (int16_t *)&I2S3_tx_buffer[AUDIO_BLOCK_SAMPLES/2];
+		if (AudioOutputMQS::update_responsibility) AudioStream::update_all();
+	} else {
+		// DMA is transmitting the second half of the buffer
+		// so we must fill the first half
+		dest = (int16_t *)I2S3_tx_buffer;
+	}
+
+	blockL = AudioOutputMQS::block_left_1st;
+	blockR = AudioOutputMQS::block_right_1st;
+	offsetL = AudioOutputMQS::block_left_offset;
+	offsetR = AudioOutputMQS::block_right_offset;
+
+	if (blockL && blockR) {
+		memcpy_tointerleaveLR(dest, blockL->data + offsetL, blockR->data + offsetR);
+		offsetL += AUDIO_BLOCK_SAMPLES / 2;
+		offsetR += AUDIO_BLOCK_SAMPLES / 2;
+	} else if (blockL) {
+		memcpy_tointerleaveL(dest, blockL->data + offsetL);
+		offsetL += AUDIO_BLOCK_SAMPLES / 2;
+	} else if (blockR) {
+		memcpy_tointerleaveR(dest, blockR->data + offsetR);
+		offsetR += AUDIO_BLOCK_SAMPLES / 2;
+	} else {
+		memset(dest,0,AUDIO_BLOCK_SAMPLES * 2);
+		return;
+	}
+
+	if (offsetL < AUDIO_BLOCK_SAMPLES) {
+		AudioOutputMQS::block_left_offset = offsetL;
+	} else {
+		AudioOutputMQS::block_left_offset = 0;
+		AudioStream::release(blockL);
+		AudioOutputMQS::block_left_1st = AudioOutputMQS::block_left_2nd;
+		AudioOutputMQS::block_left_2nd = NULL;
+	}
+	if (offsetR < AUDIO_BLOCK_SAMPLES) {
+		AudioOutputMQS::block_right_offset = offsetR;
+	} else {
+		AudioOutputMQS::block_right_offset = 0;
+		AudioStream::release(blockR);
+		AudioOutputMQS::block_right_1st = AudioOutputMQS::block_right_2nd;
+		AudioOutputMQS::block_right_2nd = NULL;
+	}
+
+}
+
+
+
+
+void AudioOutputMQS::update(void)
+{
+	// null audio device: discard all incoming data
+	//if (!active) return;
+	//audio_block_t *block = receiveReadOnly();
+	//if (block) release(block);
+	//digitalWriteFast(13, LOW);
+	audio_block_t *block;
+	block = receiveReadOnly(0); // input 0 = left channel
+	if (block) {
+		__disable_irq();
+		if (block_left_1st == NULL) {
+			block_left_1st = block;
+			block_left_offset = 0;
+			__enable_irq();
+		} else if (block_left_2nd == NULL) {
+			block_left_2nd = block;
+			__enable_irq();
+		} else {
+			audio_block_t *tmp = block_left_1st;
+			block_left_1st = block_left_2nd;
+			block_left_2nd = block;
+			block_left_offset = 0;
+			__enable_irq();
+			release(tmp);
+		}
+	}
+	block = receiveReadOnly(1); // input 1 = right channel
+	if (block) {
+		__disable_irq();
+		if (block_right_1st == NULL) {
+			block_right_1st = block;
+			block_right_offset = 0;
+			__enable_irq();
+		} else if (block_right_2nd == NULL) {
+			block_right_2nd = block;
+			__enable_irq();
+		} else {
+			audio_block_t *tmp = block_right_1st;
+			block_right_1st = block_right_2nd;
+			block_right_2nd = block;
+			block_right_offset = 0;
+			__enable_irq();
+			release(tmp);
+		}
+	}
+
+}
+
+void AudioOutputMQS::config_i2s(void)
+{
+	CCM_CCGR5 |= CCM_CCGR5_SAI3(CCM_CCGR_ON);
+	CCM_CCGR0 |= CCM_CCGR0_MQS_HMCLK(CCM_CCGR_ON);
+
+//PLL:
+//TODO: Check if frequencies are correct!
+
+	int fs = AUDIO_SAMPLE_RATE_EXACT;
+	int oversample = 64;
+	// 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 * oversample * n1);
+
+	double C = ((double)fs * oversample * n1 * n2) / 24000000;
+	int c0 = C;
+	int c2 = 10000;
+	int c1 = C * c2 - (c0 * c2);
+
+	set_audioClock(c0, c1, c2);
+
+	CCM_CSCMR1 = (CCM_CSCMR1 & ~(CCM_CSCMR1_SAI3_CLK_SEL_MASK))
+		   | CCM_CSCMR1_SAI3_CLK_SEL(2); // &0x03 // (0,1,2): PLL3PFD0, PLL5, PLL4,
+	CCM_CS1CDR = (CCM_CS1CDR & ~(CCM_CS1CDR_SAI3_CLK_PRED_MASK | CCM_CS1CDR_SAI3_CLK_PODF_MASK))
+		   | CCM_CS1CDR_SAI3_CLK_PRED(n1-1)
+		   | CCM_CS1CDR_SAI3_CLK_PODF(n2-1);
+	IOMUXC_GPR_GPR1 = (IOMUXC_GPR_GPR1 & ~(IOMUXC_GPR_GPR1_SAI3_MCLK3_SEL_MASK))
+			| (IOMUXC_GPR_GPR1_SAI3_MCLK_DIR | IOMUXC_GPR_GPR1_SAI3_MCLK3_SEL(0));	//Select MCLK
+
+	IOMUXC_GPR_GPR2 = (IOMUXC_GPR_GPR2 & ~(IOMUXC_GPR_GPR2_MQS_OVERSAMPLE | IOMUXC_GPR_GPR2_MQS_CLK_DIV_MASK))
+			| IOMUXC_GPR_GPR2_MQS_EN | IOMUXC_GPR_GPR2_MQS_OVERSAMPLE | IOMUXC_GPR_GPR2_MQS_CLK_DIV(0);
+
+	if (I2S3_TCSR & I2S_TCSR_TE) return;
+
+	I2S3_TMR = 0;
+//	I2S3_TCSR = (1<<25); //Reset
+	I2S3_TCR1 = I2S_TCR1_RFW(1);
+	I2S3_TCR2 = I2S_TCR2_SYNC(0) /*| I2S_TCR2_BCP*/ // sync=0; tx is async;
+		    | (I2S_TCR2_BCD | I2S_TCR2_DIV((0)) | I2S_TCR2_MSEL(1));
+	I2S3_TCR3 = I2S_TCR3_TCE;
+	I2S3_TCR4 = I2S_TCR4_FRSZ((2-1)) | I2S_TCR4_SYWD((16-1)) | I2S_TCR4_MF | I2S_TCR4_FSD /*| I2S_TCR4_FSE*/ /* | I2S_TCR4_FSP */;
+	I2S3_TCR5 = I2S_TCR5_WNW((16-1)) | I2S_TCR5_W0W((16-1)) | I2S_TCR5_FBT((16-1));
+}
+
+#endif //defined(__IMXRT1062__)

output_mqs.h

+/* Audio Library for Teensy 3.X
+ * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
+ *
+ * Development of this audio library was funded by PJRC.COM, LLC by sales of
+ * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop
+ * open source software by purchasing Teensy or other PJRC products.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, development funding notice, and this permission
+ * notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#if defined(__IMXRT1052__) || defined(__IMXRT1062__)
+#ifndef output_mqs_h_
+#define output_mqs_h_
+
+#include "Arduino.h"
+#include "AudioStream.h"
+#include "DMAChannel.h"
+
+class AudioOutputMQS : public AudioStream
+{
+public:
+	AudioOutputMQS(void) : AudioStream(2, inputQueueArray) { begin(); }
+	virtual void update(void);
+	void begin(void);
+	friend class AudioInputI2S2;
+protected:
+	static void config_i2s(void);
+	static audio_block_t *block_left_1st;
+	static audio_block_t *block_right_1st;
+	static bool update_responsibility;
+	static DMAChannel dma;
+	static void isr(void);
+private:
+	static audio_block_t *block_left_2nd;
+	static audio_block_t *block_right_2nd;
+	static uint16_t block_left_offset;
+	static uint16_t block_right_offset;
+	audio_block_t *inputQueueArray[2];
+};
+
+#endif
+#endif //defined(__IMXRT1062__)