Code: Untitled.cpp Select all
I believe this is supported by the ESP32, although getting it to work via the Arduino IDE has proved difficult to me. I am getting some bits of information in the buffer every time I reset, but not a constant stream of data.
Any advice or working examples of similar would be much appreciated!
Code: Select all
#include <I2S.h>
const int buff_size = 128;
uint8_t buffer[buff_size];
const int sclkPin = 14;
const int wsPin = 3;
const int sdataPin = 16;
const int outSdPin = 9;
const int inSdPin = 10;
const int bufferSize = 128;
int readD;
//SCK (Serial Clock): is the clock signal also referred as BCLK (Bit Clock Line);
//FS (Frame Select): used to discriminate Right or Left Channel data also referred WS (Word Select);
//SD (Serial Data): the serial data to be transmitted;
//Frequency = SampleRate x BitsPerChannel x numberOfChannels
// begin(int mode, int sampleRate, int bitsPerSample)
void setup()
{
Serial.begin(115200);
I2S.setAllPins(sclkPin, wsPin, sdataPin, outSdPin, inSdPin);
I2S.setBufferSize(bufferSize);
I2S.setDuplex();
I2S.begin(PDM_MONO_MODE, 4000, 16);
I2S.read(); // Switch the driver in simplex mode to receive
/* Modes:
I2S_PHILIPS_MODE
I2S_RIGHT_JUSTIFIED_MODE
I2S_LEFT_JUSTIFIED_MODE
PDM_MONO_MODE
*/
I2S.setAllPins(sclkPin, wsPin, sdataPin, outSdPin, inSdPin);
I2S.setBufferSize(bufferSize);
I2S.setSimplex();
I2S.read(); // Switch the driver in simplex mode to receive
}
void loop()
{
I2S.read();
Serial.println(I2S.available());
if(I2S.available() < buff_size)
{
readD = I2S.read(buffer, I2S.available());
}
else
{
readD = I2S.read(buffer, buff_size);
}
Serial.println(readD);
Serial.println("");
}