LyraT Mini Examples: sdmmc

Author: pschatzmann

examples/examples-custom-boards/lyrat-mini/buttons/buttons.ino

@@ -1,3 +1,16 @@
+/**
+ * @file buttons.ino
+ * @author Phil Schatzmann
+ * @brief  Demo how to use the buttons.
+ * @version 0.1
+ * @date 2024-11-03
+ * 
+ * The button values are determined with an analogRead().
+ * This demo shows how to use the integrated AudioActions class via the AudioBoardStream
+ * 
+ * @copyright Copyright (c) 2022
+ */
+
 
 #include "AudioTools.h"
 #include "AudioTools/AudioLibs/AudioBoardStream.h"

examples/examples-custom-boards/lyrat-mini/mic/mic.ino

@@ -1,13 +1,22 @@
 
 /**
+ * @file output.ino
+ * @author Phil Schatzmann
+ * @brief  Demo how to use the microphone.
+ * @version 0.1
+ * @date 2024-11-03
+ *
  * The microphone seems to be attached to 2 different i2s ports. In addition to the
  * ES8311, the ES7243 is also started. 
  * The I2S pins can be selected via cfg.i2s_function: CODEC uses the ES8311 I2S pins 
  * and CODEC_ADC uses the ES7243 I2S pins; By default the CODEC value is used.
  *
  * Only CODEC_ADC will give a proper microphone input! 
+ * 
+ * @copyright Copyright (c) 2022
  */
 
+
 #include "AudioTools.h"
 #include "AudioTools/AudioLibs/AudioBoardStream.h"
 

examples/examples-custom-boards/lyrat-mini/output/output.ino

@@ -1,5 +1,14 @@
-// Demo to output audio on a lyrat-mini board: with headphone detection active
-// to switch the power amplifier on and off
+/**
+ * @file output.ino
+ * @author Phil Schatzmann
+ * @brief  Demo to output audio on a lyrat-mini board: with headphone detection 
+ * active to switch the power amplifier on and off.
+ * I2S is used and the ES8311 is initialized via the driver library.
+ * @version 0.1
+ * @date 2024-11-03
+ *
+ * @copyright Copyright (c) 2022
+ */
 
 #include "AudioTools.h"
 #include "AudioTools/AudioLibs/AudioBoardStream.h"

examples/examples-custom-boards/lyrat-mini/sd/sd.ino

@@ -1,5 +1,13 @@
 
-// The following should work: but unforunately it does not work for me!
+/**
+ * @file sd.ino
+ * @author Phil Schatzmann
+ * @brief Test/Demo that SD is not working!
+ * @version 0.1
+ * @date 2024-11-03
+ *
+ * @copyright Copyright (c) 2022
+ */
 
 #include <SPI.h>
 #include <SD.h>

examples/examples-custom-boards/lyrat-mini/sdmmc/sdmmc.ino

@@ -0,0 +1,49 @@
+/**
+ * @file sdmmc.ino
+ * @author Phil Schatzmann
+ * @brief Test/Demo how to use the SD_MMC API in Arduino with the LyraT Mini
+ * @version 0.1
+ * @date 2024-11-03
+ *
+ * @copyright Copyright (c) 2022
+ */
+
+#include "FS.h"
+#include "SD_MMC.h"
+
+// These pins are defined in the HAL
+const int PIN_SD_CARD_POWER = 13;  
+const int PIN_SD_CARD_DET = 34;
+
+
+// Arduino Setup
+void setup(void) {
+  Serial.begin(115200);
+
+  // Mandatory: set power pin to low
+  pinMode(PIN_SD_CARD_POWER, OUTPUT);
+  digitalWrite(PIN_SD_CARD_POWER, LOW);
+
+  // Optionally: Determin if there is an SD card
+  pinMode(PIN_SD_CARD_DET, INPUT);
+  if (digitalRead(PIN_SD_CARD_DET)!=0){
+    Serial.println("No SD Card detected");
+  }
+
+  // open SDMMC in 1 bit mode
+  if (!SD_MMC.begin("/sdcard", true)) {
+    Serial.println("Card Mount Failed");
+    while(true);
+  }
+
+  auto file = SD_MMC.open("/test.mp3", FILE_READ);
+  if (!file){
+    Serial.println("file open failed");
+    while(true);
+  }
+
+  Serial.println("Success");
+}
+
+// Arduino loop - repeated processing 
+void loop() {}