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i2s-i2s examples

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Phil Schatzmann 2022-02-21 17:17:40 +01:00
parent bae31bddd3
commit 2a6baef580
2 changed files with 72 additions and 28 deletions
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57
examples/examples-stream/streams-i2s-i2s-2/streams-i2s-i2s-2.ino Normal file
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@ -0,0 +1,57 @@
/**
* @file streams-i2s-filter-i2s-2.ino
* @brief Copy audio from I2S to I2S using an FIR filter - We use 2 different i2s ports!
* @author Phil Schatzmann
* @copyright GPLv3
*/
#include "AudioTools.h"
uint16_t sample_rate=44100;
uint16_t channels = 2;
I2SStream in;
I2SStream out;
StreamCopy copier(out, in); // copies sound into i2s
// Arduino Setup
void setup(void) {
// Open Serial
Serial.begin(115200);
// change to Warning to improve the quality
AudioLogger::instance().begin(Serial, AudioLogger::Info);
// start I2S in
Serial.println("starting I2S...");
auto config_in = in.defaultConfig(RX_MODE);
config_in.sample_rate = sample_rate;
config_in.bits_per_sample = 16;
config_in.i2s_format = I2S_STD_FORMAT;
config_in.is_master = true;
config_in.port_no = 0;
config_in.pin_ws = 14;
config_in.pin_bck = 15;
config_in.pin_data = 16;
// config_in.fixed_mclk = sample_rate * 256
// config_in.pin_mck = 2
in.begin(config_in);
// start I2S out
auto config_out = out.defaultConfig(TX_MODE);
config_out.sample_rate = sample_rate;
config_out.bits_per_sample = 16;
config_out.i2s_format = I2S_STD_FORMAT;
config_out.is_master = true;
config_out.port_no = 1;
config_out.pin_ws = 17;
config_out.pin_bck = 18;
config_out.pin_data = 19;
out.begin(config_out);
Serial.println("I2S started...");
}
// Arduino loop - copy sound to out
void loop() {
copier.copy();
}

43
examples/examples-stream/streams-i2s-i2s/streams-i2s-i2s.ino
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@ -1,6 +1,6 @@
/**
* @file streams-i2s-filter-i2s.ino
* @brief Copy audio from I2S to I2S using an FIR filter
* @brief Copy audio from I2S to I2S using an FIR filter - I2S uses 1 i2s port
* @author Phil Schatzmann
* @copyright GPLv3
*/
@ -9,9 +9,8 @@
uint16_t sample_rate=44100;
uint16_t channels = 2;
I2SStream in;
I2SStream out;
StreamCopy copier(out, in); // copies sound into i2s
I2SStream i2s;
StreamCopy copier(i2s, i2s); // copies sound into i2s
// Arduino Setup
@ -23,30 +22,18 @@ void setup(void) {
// start I2S in
Serial.println("starting I2S...");
auto config_in = in.defaultConfig(RX_MODE);
config_in.sample_rate = sample_rate;
config_in.bits_per_sample = 16;
config_in.i2s_format = I2S_STD_FORMAT;
config_in.is_master = true;
config_in.port_no = 0;
config_in.pin_ws = 14;
config_in.pin_bck = 15;
config_in.pin_data = 16;
// config_in.fixed_mclk = sample_rate * 256
// config_in.pin_mck = 2
in.begin(config_in);
// start I2S out
auto config_out = out.defaultConfig(TX_MODE);
config_out.sample_rate = sample_rate;
config_out.bits_per_sample = 16;
config_out.i2s_format = I2S_STD_FORMAT;
config_out.is_master = true;
config_out.port_no = 1;
config_out.pin_ws = 17;
config_out.pin_bck = 18;
config_out.pin_data = 19;
out.begin(config_out);
auto config = i2s.defaultConfig(RXTX_MODE);
config.sample_rate = sample_rate;
config.bits_per_sample = 16;
config.channels = 2;
config.i2s_format = I2S_STD_FORMAT;
config.pin_ws = 14;
config.pin_bck = 15;
config.pin_data = 16;
config.pin_data_in = 17;
config.fixed_mclk = sample_rate * 256
config.pin_mck = 2
i2s.begin(config);
Serial.println("I2S started...");
}