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future support: reading a single sample on 8266

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audioreactive will still not work on 8266. This is just experimental code that allows to read a single sample from ADC every 20 millis.
This commit is contained in:
Frank 2022-08-07 22:04:26 +02:00
parent 8694e7a6bf
commit 86e8ee334f
1 changed files with 15 additions and 2 deletions
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17
usermods/audioreactive/audio_reactive.h
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@ -47,8 +47,9 @@
constexpr i2s_port_t I2S_PORT = I2S_NUM_0;
constexpr int BLOCK_SIZE = 128;
constexpr int SAMPLE_RATE = 20480; // Base sample rate in Hz - 20Khz is experimental
//constexpr int SAMPLE_RATE = 10240; // Base sample rate in Hz - standard
//constexpr int SAMPLE_RATE = 22050; // Base sample rate in Hz - 22Khz is a standard rate. Physical sample time -> 23ms
constexpr int SAMPLE_RATE = 20480; // Base sample rate in Hz - 20Khz is experimental. Physical sample time -> 25ms
//constexpr int SAMPLE_RATE = 10240; // Base sample rate in Hz - standard. Physical sample time -> 50ms
// globals
static uint8_t inputLevel = 128; // UI slider value
@ -593,7 +594,19 @@ class AudioReactive : public Usermod {
micIn = inoise8(millis(), millis()); // Simulated analog read
micDataReal = micIn;
#else
#ifdef ESP32
micIn = micDataSm; // micDataSm = ((micData * 3) + micData)/4;
#else
// this is the minimal code for reading analog mic input on 8266.
// warning!! Absolutely experimental code. Audio on 8266 is still not working. Expects a million follow-on problems.
static unsigned long lastAnalogTime = 0;
if (millis() - lastAnalogTime > 20) {
micDataReal = analogRead(A0); // read one sample with 10bit resolution. This is a dirty hack, supporting volumereactive effects only.
lastAnalogTime = millis();
}
micDataSm = micDataReal;
micIn = micDataSm;
#endif
#endif
micLev = ((micLev * 8191.0f) + micDataReal) / 8192.0f; // takes a few seconds to "catch up" with the Mic Input