Add compressor RMS example

examples/8_Compressor_RMS/8_Compressor_RMS.ino

@@ -0,0 +1,89 @@
+/***********************************************|
+| SigmaDSP library                              |
+| https://github.com/MCUdude/SigmaDSP           |
+|                                               |
+| 8_Compressor_RMS.ino                          |
+| This example we use the Compressor RMS block  |
+| To do various changes to the audio signal.    |                                      |    
+|***********************************************/
+
+// Include Wire and SigmaDSP library
+#include <Wire.h>
+#include <SigmaDSP.h>
+
+// Include generated parameter file
+#include "SigmaDSP_parameters.h"
+
+
+// The first parameter is the Wire object we'll be using when communicating wth the DSP
+// The second parameter is the DSP i2c address, which is defined in the parameter file
+// The third parameter is the sample rate
+// An optional fourth parameter is the pin to physically reset the DSP
+SigmaDSP dsp(Wire, DSP_I2C_ADDRESS, 48000.00f /*,12*/);
+
+
+// Only needed if an external i2c EEPROM is present + the DSP is in selfboot mode
+// The first parameter is the Wire object we'll be using when communicating wth the EEPROM
+// The second parameter is the EEPROM i2c address, which is defined in the parameter file
+// The third parameter is the EEPROM size in kilobits (kb)
+// An optional fourth parameter is the pin to toggle while writing content to EEPROM
+//DSPEEPROM ee(Wire, EEPROM_I2C_ADDRESS, 256, LED_BUILTIN);
+
+// Create a compressor instance
+compressor comp;
+
+void setup()
+{
+  Serial.begin(9600);
+  Serial.println(F("8_Compressor_RMS example\n"));
+
+  Wire.begin();
+  dsp.begin();
+  //ee.begin();
+
+  delay(2000);
+
+
+  Serial.println(F("Pinging i2c bus...\n0 -> deveice is present\n2 -> device is not present"));
+  Serial.print(F("DSP response: "));
+  Serial.println(dsp.ping());
+  //Serial.print(F("EEPROM ping: "));
+  //Serial.println(ee.ping());
+
+
+  // Use this step if no EEPROM is present
+  Serial.print(F("\nLoading DSP program... "));
+  loadProgram(dsp);
+  Serial.println("Done!\n");
+
+
+  // Comment out the three code lines above and use this step instead if EEPROM is present
+  // The last parameter in writeFirmware is the FW version, and prevents the MCU from overwriting on every reboot
+  //ee.writeFirmware(DSP_eeprom_firmware, sizeof(DSP_eeprom_firmware), 0);
+  //dsp.reset();
+  //delay(2000); // Wait for the FW to load from the EEPROM
+}
+
+
+void loop()
+{
+  Serial.println(F("Threshold = +6dB,  Ratio = 50,  RMS TC = 72ms, Hold = 0ms,   Decay = 869ms, Post gain = 0dB"));
+  comp.threshold = 6;
+  comp.ratio     = 50;
+  comp.rms_tc    = 72;
+  comp.hold      = 0;
+  comp.decay     = 869;
+  comp.postgain  = 0;
+  dsp.compressorRMS(MOD_COMPRESSOR_ALG0_TWOCHANNELSINGLEDETECTALGFIX20_ADDR, comp);
+  delay(5000);
+
+  Serial.println(F("Threshold = -40dB, Ratio = 100, RMS TC = 72ms, Hold = 100ms, Decay = 869ms, Post gain = 0dB"));
+  comp.threshold = -40;
+  comp.ratio     = 100;
+  comp.rms_tc    = 72;
+  comp.hold      = 100;
+  comp.decay     = 869;
+  comp.postgain  = 0;
+  dsp.compressorRMS(MOD_COMPRESSOR_ALG0_TWOCHANNELSINGLEDETECTALGFIX20_ADDR, comp);
+  delay(5000);
+}