snapshot

libraries/audio-tools/examples/tests/adc/read-speed/read-speed.ino

@@ -0,0 +1,45 @@
+/**
+ * @file read.ino
+ * @author Phil Schatzmann
+ * @brief reads the data from the ADC 
+ * Default Pins ESP32: 34, 35 (ADC_CHANNEL_6, ADC_CHANNEL_7)
+ * Default Pins ESP32C3: 2, 3 (ADC_CHANNEL_2, ADC_CHANNEL_3)
+ * @version 0.1
+ * @date 2023-11-11
+ * 
+ * @copyright Copyright (c) 2023
+ */ 
+
+#include "AudioTools.h"
+
+AudioInfo info(44100, 2, 16);
+AnalogAudioStream adc; 
+MeasuringStream out(10, &Serial);
+StreamCopy copier(out, adc); 
+
+// Arduino Setup
+void setup(void) {
+    Serial.begin(115200);
+    AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+#ifdef ESP32
+    LOGI("Supported samples rates: %d - %d", SOC_ADC_SAMPLE_FREQ_THRES_LOW, SOC_ADC_SAMPLE_FREQ_THRES_HIGH);
+    LOGI("Supported bit width: %d - %d", SOC_ADC_DIGI_MIN_BITWIDTH, SOC_ADC_DIGI_MAX_BITWIDTH);
+#endif
+    
+    auto cfg = adc.defaultConfig(RX_MODE);
+    cfg.copyFrom(info);
+    //cfg.use_apll = false;  // try with yes
+    if (!adc.begin(cfg)) {
+      LOGE("adc.begin() failed");
+      stop();
+    } 
+
+    // make sure that we have the correct channels set up
+    out.begin(info);
+}
+
+// Arduino loop - copy data
+void loop() {
+    copier.copy();
+}