Add DMA support to I2S

libraries/CurieI2S/examples/I2SDMA_RXCallBack/I2SDMA_RXCallBack.ino

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2016 Intel Corporation.  All rights reserved.
+ * See the bottom of this file for the license terms.
+ */
+
+/**
+ * A simple sketch to test the rx channel of the i2s interface. 
+ * A callback function is used to fill up a buffer whenever data is received
+ * 
+ * To test this sketch you will need a second Arduino/Genuino 101 board with the I2SDMA_TxCallback sketch uploaded
+ * 
+ * Connection:
+ * GND -> GND
+ * I2S_RSCK(pin 8) -> I2S_TSCK(pin 2) 
+ * I2S_RWS(pin 3) -> I2S_TWS(pin 4)
+ * I2S_RXD(pin 5) -> I2S_TXD(pin 7)
+ * 
+**/
+#include <CurieI2SDMA.h>
+
+#define BUFF_SIZE 128
+#define OFFSET 2
+uint32_t dataBuff[BUFF_SIZE+OFFSET]; // extra 2 buffer is for the padding zero
+
+uint8_t start_flag = 0;
+uint8_t done_flag = 0;
+uint32_t loop_count = 0;
+
+void setup() 
+{
+  Serial.begin(115200);
+  while(!Serial);
+  Serial.println("CurieI2SDMA Rx Callback");
+
+  CurieI2SDMA.iniRX();
+  /*
+   * CurieI2SDMA.beginTX(sample_rate, resolution, master,mode)
+   * mode 1 : PHILIPS_MODE
+   *      2 : RIGHT_JST_MODE
+   *      3 : LEFT_JST_MODE
+   *      4 : DSP_MODE
+   */
+  CurieI2SDMA.beginRX(44100, 32,0,1);
+
+}
+
+void loop() 
+{
+  int status = CurieI2SDMA.transRX(dataBuff,sizeof(dataBuff));
+  if(status)
+    return;
+
+  if(start_flag)
+  {   
+    if((dataBuff[OFFSET]>>16) != loop_count+1)
+      Serial.println("+++ loop_count jump +++");        
+  }
+  else
+  {
+    start_flag = 1;
+  }
+  loop_count = (dataBuff[OFFSET] >> 16);
+
+  done_flag = 1;
+  for(uint32_t i = 0 ;i < BUFF_SIZE;++i)
+  {
+    //Serial.println(dataBuff[i+OFFSET],HEX);
+    if ((dataBuff[i+OFFSET] & 0XFFFF0000) == (loop_count <<16)
+      && (dataBuff[i+OFFSET] & 0XFFFF) == (i+1))
+            ;
+    else
+    {
+      done_flag = 0;
+      Serial.println(dataBuff[i+OFFSET],HEX);
+      Serial.println("ERROR");
+      break;
+    }
+  } 
+
+  if(done_flag)
+    Serial.println("RX done");
+  delay(100);  
+}
+
+/*
+  Copyright (c) 2016 Intel Corporation. All rights reserved.
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-
+  1301 USA
+*/

libraries/CurieI2S/examples/I2SDMA_TXCallBack/I2SDMA_TXCallBack.ino

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016 Intel Corporation.  All rights reserved.
+ * See the bottom of this file for the license terms.
+ */
+
+//I2S_TX -> Pin 7
+//I2S_TSK -> Pin 4
+//I2S_TSCK -> pin 2
+
+#include <CurieI2SDMA.h>
+
+#define BUFF_SIZE 128
+boolean blinkState = true;          // state of the LED
+uint32_t dataBuff[BUFF_SIZE];
+uint32_t loop_count = 0;
+void setup() 
+{
+  Serial.begin(115200);
+  while(!Serial);
+  Serial.println("CurieI2SDMA Tx Callback");
+
+  CurieI2SDMA.iniTX();
+  /*
+   * CurieI2SDMA.beginTX(sample_rate, resolution, master,mode)
+   * mode 1 : PHILIPS_MODE
+   *      2 : RIGHT_JST_MODE
+   *      3 : LEFT_JST_MODE
+   *      4 : DSP_MODE
+   */
+  CurieI2SDMA.beginTX(44100, 32,1, 1);
+  digitalWrite(13, blinkState);  
+}
+
+void loop() 
+{
+  for(uint32_t i = 0; i <BUFF_SIZE; ++i)
+  {
+    dataBuff[i] = i + 1 + (loop_count<<16);
+  }
+  loop_count++;
+  int status = CurieI2SDMA.transTX(dataBuff,sizeof(dataBuff));
+  if(status)
+    return;
+
+  blinkState = !blinkState;
+  digitalWrite(13, blinkState);
+
+  //when the TX set to be slave, the two lines below will introduce delay.
+  //Please remove them.
+  Serial.println("done transmitting");
+  delay(1000);
+
+}
+
+/*
+  Copyright (c) 2016 Intel Corporation. All rights reserved.
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-
+  1301 USA
+*/

libraries/CurieI2S/keywords.txt

@@ -1,48 +1,58 @@
-#######################################
-# Syntax Coloring Map For CurieI2S
-#######################################
-
-#######################################
-# Datatypes (KEYWORD1)
-#######################################
-
-Curie_I2S KEYWORD1
-
-#######################################
-# Methods and Functions (KEYWORD2)
-#######################################
-
-begin	KEYWORD2
-start	KEYWORD2
-stop	KEYWORD2
-begin   KEYWORD2
-enableRX    KEYWORD2
-enableTX    KEYWORD2
-startRX     KEYWORD2
-startTX     KEYWORD2
-stopRX      KEYWORD2
-stopTX      KEYWORD2
-setI2SMode  KEYWORD2
-setResolution   KEYWORD2
-initRX      KEYWORD2
-initTX      KEYWORD2
-end         KEYWORD2
-pushData    KEYWORD2
-fastPushData    KEYWORD2
-write   KEYWORD2
-pullData    KEYWORD2
-read        KEYWORD2
-requestdword    KEYWORD2
-available       KEYWORD2
-availableTx     KEYWORD2
-attachRxInterrupt   KEYWORD2
-detachRxInterrupt   KEYWORD2
-attachTxInterrupt   KEYWORD2
-detachTxInterrupt   KEYWORD2
-#######################################
-# Instances (KEYWORD2)
-#######################################
-CurieI2S KEYWORD2
-#######################################
-# Constants (LITERAL1)
-#######################################
+#######################################
+# Syntax Coloring Map For CurieI2S CurieI2SDMA
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+Curie_I2S	KEYWORD1
+
+Curie_I2SDMA	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+begin	KEYWORD2
+start	KEYWORD2
+stop	KEYWORD2
+begin	KEYWORD2
+enableRX	KEYWORD2
+enableTX	KEYWORD2
+startRX	KEYWORD2
+startTX	KEYWORD2
+stopRX	KEYWORD2
+stopTX	KEYWORD2
+setI2SMode	KEYWORD2
+setResolution	KEYWORD2
+initRX	KEYWORD2
+initTX	KEYWORD2
+end	KEYWORD2
+pushData	KEYWORD2
+fastPushData	KEYWORD2
+write	KEYWORD2
+pullData	KEYWORD2
+read	KEYWORD2
+requestdword	KEYWORD2
+available	KEYWORD2
+availableTx	KEYWORD2
+attachRxInterrupt	KEYWORD2
+detachRxInterrupt	KEYWORD2
+attachTxInterrupt	KEYWORD2
+detachTxInterrupt	KEYWORD2
+attachTxEmptyInterrupt	KEYWORD2
+beginTX	KEYWORD2
+beginRX	KEYWORD2
+transTX	KEYWORD2
+transRX	KEYWORD2
+mergeData	KEYWORD2
+separateData	KEYWORD2
+#######################################
+# Instances (KEYWORD2)
+#######################################
+CurieI2S	KEYWORD2
+CurieI2SDMA	KEYWORD2
+#######################################
+# Constants (LITERAL1)
+#######################################