Implement display, SD card, I2S WAV audio player, and button sync logic

2026-06-30 01:08:27 -07:00
parent 23107b98d7
commit d48ad18134
9 changed files with 795 additions and 0 deletions
--- a/sound_picture_app/sound_picture_app.ino
+++ b/sound_picture_app/sound_picture_app.ino
@@ -0,0 +1,100 @@
+#include "Display_ST7789.h"
+#include "SD_Card.h"
+#include "Display_PNG.h"
+#include "Audio_Player.h"
+#include <algorithm>
+
+#define BOOT_KEY_PIN 9
+
+uint16_t currentIndex = 0;
+bool lastButtonState = HIGH;
+uint32_t lastDebounceTime = 0;
+const uint32_t debounceDelay = 50;
+bool buttonWasPressed = false;
+
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+  
+  printf("\r\n==========================================\r\n");
+  printf("Starting Sound and Picture Player...\r\n");
+  printf("==========================================\r\n");
+  
+  // Initialize peripherals
+  Flash_test();
+  SD_Init();
+  LCD_Init();
+  Set_Backlight(90);
+  
+  // Setup button
+  pinMode(BOOT_KEY_PIN, INPUT_PULLUP);
+  
+  // Retrieve media files from SD Card
+  Search_Images("/");
+  Search_Wavs("/");
+  
+  printf("Initialization complete!\r\n");
+  printf("Found %d PNG images and %d WAV soundbites.\r\n", Image_Count, Wav_Count);
+  
+  if (Image_Count > 0) {
+    printf("Displaying initial image (index 0): %s\r\n", Image_Names[0]);
+    Display_Image_By_Index("/", 0);
+  } else {
+    printf("WARNING: No PNG images found in SD Card root directory!\r\n");
+  }
+}
+
+void playCurrentPair() {
+  if (Image_Count == 0 && Wav_Count == 0) {
+    printf("Cannot play: missing PNG images and WAV soundbites!\r\n");
+    return;
+  }
+  
+  // Stop current playing audio if any
+  stopWav();
+  
+  printf("Playing item index %d:\r\n", currentIndex);
+  
+  // Display the image
+  if (Image_Count > 0) {
+    uint16_t pngIndex = currentIndex % Image_Count;
+    Display_Image_By_Index("/", pngIndex);
+  }
+  
+  // Play the soundbite
+  if (Wav_Count > 0) {
+    uint16_t wavIndex = currentIndex % Wav_Count;
+    String soundPath = String("/") + Wav_Names[wavIndex];
+    printf("Playing sound: %s\r\n", soundPath.c_str());
+    playWav(soundPath.c_str());
+  }
+}
+
+void loop() {
+  bool currentButtonReading = digitalRead(BOOT_KEY_PIN);
+  
+  if (currentButtonReading != lastButtonState) {
+    lastDebounceTime = millis();
+  }
+  
+  if ((millis() - lastDebounceTime) > debounceDelay) {
+    if (currentButtonReading == LOW) {
+      if (!buttonWasPressed) {
+        buttonWasPressed = true;
+        printf("Button pressed! Cycling to next picture and playing sound...\r\n");
+        
+        if (Image_Count > 0 || Wav_Count > 0) {
+          playCurrentPair();
+          currentIndex = (currentIndex + 1) % std::max(Image_Count, Wav_Count);
+        } else {
+          printf("No media found on SD card to cycle!\r\n");
+        }
+      }
+    } else {
+      buttonWasPressed = false;
+    }
+  }
+  
+  lastButtonState = currentButtonReading;
+  delay(10); // Yield to other RTOS tasks
+}