Restore original sketch

Author: sebromero

libraries/Camera/examples/CameraCaptureRawBytes/CameraCaptureRawBytes.ino

@@ -9,8 +9,11 @@
   // uncomment the correct camera in use
   #include "hm0360.h"
   HM0360 himax;
-  // #include "himax.h";
+  
+  // #include "himax.h"
   // HM01B0 himax;
+  // Camera cam(himax);
+
   Camera cam(himax);
   #define IMAGE_MODE CAMERA_GRAYSCALE
 #elif defined(ARDUINO_GIGA)
@@ -36,16 +39,14 @@ If resolution higher than 320x240 is required, please use external RAM via
   // and adding in setup()
   SDRAM.begin();
 */
-#define CHUNK_SIZE 512  // Size of chunks in bytes
-#define RESOLUTION CAMERA_R320x240
 FrameBuffer fb;
 
 unsigned long lastUpdate = 0;
 
+
 void blinkLED(uint32_t count = 0xFFFFFFFF)
 {
-  pinMode(LED_BUILTIN, OUTPUT);  
-  
+  pinMode(LED_BUILTIN, OUTPUT);
   while (count--) {
     digitalWrite(LED_BUILTIN, LOW);  // turn the LED on (HIGH is the voltage level)
     delay(50);                       // wait for a second
@@ -56,61 +57,36 @@ void blinkLED(uint32_t count = 0xFFFFFFFF)
 
 void setup() {
   // Init the cam QVGA, 30FPS
-  if (!cam.begin(RESOLUTION, IMAGE_MODE, 30)) {
+  if (!cam.begin(CAMERA_R320x240, IMAGE_MODE, 30)) {
     blinkLED();
   }
 
   blinkLED(5);
-  
-  pinMode(LEDB, OUTPUT);
-  digitalWrite(LEDB, HIGH);
-}
-
-void sendFrame(){
-  // Grab frame and write to serial
-  if (cam.grabFrame(fb, 3000) == 0) {    
-    byte* buffer = fb.getBuffer();
-    size_t bufferSize = cam.frameSize();
-    digitalWrite(LEDB, LOW);
-    
-    // Split buffer into chunks
-    for(size_t i = 0; i < bufferSize; i += CHUNK_SIZE) {
-      size_t chunkSize = min(bufferSize - i, CHUNK_SIZE);
-      Serial.write(buffer + i, chunkSize);
-      Serial.flush();
-      delay(1);  // Optional: Add a small delay to allow the receiver to process the chunk
-    }    
-    
-    digitalWrite(LEDB, HIGH);
-  } else {
-    blinkLED(20);
-  }
-}
-
-void sendCameraConfig(){
-  Serial.write(IMAGE_MODE);
-  Serial.write(RESOLUTION);
-  Serial.flush();
-  delay(1);
 }
 
 void loop() {
   if(!Serial) {    
     Serial.begin(115200);
-    while(!Serial);    
+    while(!Serial);
   }
 
-  if(!Serial.available()) return;
-
-  byte request = Serial.read();
-
-  switch(request){
-    case 1:
-      sendFrame();
-      break; 
-    case 2:
-      sendCameraConfig();
-      break;
+  // Time out after 2 seconds, which sets the (constant) frame rate
+  bool timeoutDetected = millis() - lastUpdate > 2000;
+  
+  // Wait for sync byte and timeout
+  // Notice that this order must be kept, or the sync bytes will be
+  // consumed prematurely
+  if ((!timeoutDetected) || (Serial.read() != 1))
+  {
+    return;
   }
+
+  lastUpdate = millis();
 
+  // Grab frame and write to serial
+  if (cam.grabFrame(fb, 3000) == 0) {
+    Serial.write(fb.getBuffer(), cam.frameSize());
+  } else {
+    blinkLED(20);
+  }
 }