snapshot

libraries/audio-tools/examples/examples-basic-api/base-adc-measure/base-adc-measure.ino

@@ -0,0 +1,53 @@
+/**
+ * Internal ADC: It depdens pretty much on our processor & arduino version if and how
+ * this is supported.
+ */
+
+#include "Arduino.h"
+#include "AudioTools.h"
+
+// On board analog to digital converter
+AnalogAudioStream analog_in; 
+
+// Measure throughput
+MeasuringStream measure(1000, &Serial);
+
+// Copy input to output
+StreamCopy copier(measure, analog_in);
+
+void setup() {
+
+  delay(3000); // wait for serial to become available
+
+  // Serial Interface
+  Serial.begin(115200);
+  // Include logging to serial
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info); //Warning, Info, Error, Debug
+  
+  // Configure ADC input
+  auto adcConfig = analog_in.defaultConfig(RX_MODE);
+
+  // For ESP32 by Espressif Systems version 3.0.0 and later 
+  // see examples/README_ESP32.md
+  // adcConfig.sample_rate = 22050;
+  // adcConfig.adc_bit_width = 12;
+  // adcConfig.adc_calibration_active = true;
+  // adcConfig.is_auto_center_read = false;
+  // adcConfig.adc_attenuation = ADC_ATTEN_DB_12; 
+  // adcConfig.channels = 2;
+  // adcConfig.adc_channels[0] = ADC_CHANNEL_4; 
+  // adcConfig.adc_channels[1] = ADC_CHANNEL_5;
+
+  adcConfig.sample_rate = 44100; // per channel
+
+  Serial.println("Starting ADC...");
+  analog_in.begin(adcConfig);
+
+  // Start Measurements
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning); //Warning, Debug, Info, Error
+  Serial.println("Starting through put measurement...");
+}
+
+void loop() {
+  copier.copy(); 
+}