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2185f9bd73
* BREAKING - "i2s.h" removed, I2S library added An "i2S.h" header was present in prior cores, but this conflicts with the Arduino standard I2S.h header for the I2S class under Windows (because of case insensitivity). Initial 3.0.0 release has a redirect "i2s.h" file in the cores directory to redirect to the "I2S.h" file in the library, but under Windows this resulted in the IDE not building the I2S library and link errors. Remove the offending header. Code will need to mode to including "I2S.h" instead (which will include both the Arduino class as well as the low-level definitions). Fixes #8107 * Update examples to use proper I2S.h version
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
/*
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I2S stereo microphone (input) example
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Run using the Arduion Serial Plotter to see waveform.
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Released to the Public Domain by Earle F. Philhower, III
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For the Google AIY Voice Hat Microphone daughterboard, part
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of the Raspberry Pi AIY cardboard box, the I2S stereo pinout
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looking at the board top with the RPI logo on the left hand
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side:
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+-- ------------------------------------ --+
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left RPI | (1) GND (2) DIN (3) BCLK (4) LRCLK (5) 3.3V | AIY right
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+---------------------------------------------+
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The I2S pins are on different pins depending on your board.
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The *internal GPIO number* which is NOT NECESSARIALY the
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same as the pin numbers, are as follows:
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I2SI_DATA = GPIO12
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IS2I_BCK = GPIO13
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I2SI_WS/LRCLK = GPIO14
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On the D1 mini the I2SI pins map to the following D pins:
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I2SI_DATA = GPIO12 = D6
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IS2I_BCK = GPIO13 = D7
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I2SI_WS/LRCLK = GPIO14 = D5
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Expect different D pins on different ESP8266 boards, and of
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course be sure to wire up VCC(3.3V) and GND.
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*/
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#include <ESP8266WiFi.h>
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#include <I2S.h>
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void setup() {
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Serial.begin(115200);
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WiFi.forceSleepBegin();
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delay(500);
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i2s_rxtx_begin(true, false); // Enable I2S RX
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i2s_set_rate(11025);
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delay(1000);
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while (1) {
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int16_t l, r;
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i2s_read_sample(&l, &r, true);
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char withScale[256];
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sprintf(withScale, "%d %d", l, r);
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Serial.println(withScale);
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yield();
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}
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}
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void loop() {
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/* Nothing here */
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}
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