need to update all comms packets to take 2 byte lengthts to allow recieivng big packets

HansonServo.ino

@@ -1,3 +1,4 @@
+
 #include <base64.h>
 #include "feetech.h"
 #include "animation.h"
@@ -14,6 +15,13 @@
 #define CMD_DELETE_FILE 0x04
 #define CMD_LOAD_FILE_CHUNK 0x05
 
+#define MAX_ANIMATION_SIZE (16 + MAX_FRAMES * NUM_CHANNELS * 2 + 512)  // generous buffer
+uint8_t animationBuffer[MAX_ANIMATION_SIZE];
+size_t receivedSize = 0;
+size_t expectedSize = 0;
+
+Animation currentAnimation;
+
 
 // ESP32 S2 PINOUT
 #define RX_PIN 17  // DI
@@ -52,14 +60,14 @@ void setup() {
     return;
   }
 
-  sweep.clear();
-  sweep.createSampleSweep(4);
-  sweep.saveToFile("/sweep.anim");
   // sweep.clear();
-  // sweep.createStaggeredSweep(4);
-  // sweep.saveToFile("/stagger.anim");
-  //delay(9999);
-  sweep.printKeyframes();
+  // sweep.createSampleSweep(4);
+  // sweep.saveToFile("/sweep.anim");
+  // // sweep.clear();
+  // // sweep.createStaggeredSweep(4);
+  // // sweep.saveToFile("/stagger.anim");
+  // //delay(9999);
+  // sweep.printKeyframes();
 
 
   // anim.clear();
@@ -137,29 +145,130 @@ void HandleSerialRequests() {
         payload += (char)Serial.read();
       }
 
-      handleCommand(command, payload);
+      handleCommand(command, payload, length);
     }
   }
 }
 
-void handleCommand(uint8_t command, const String& payload) {
+void handleCommand(uint8_t command, const String& payload, uint8_t length) {
   switch (command) {
     case CMD_ID_REQUEST:
       sendIdPacket();
       break;
+
     case CMD_FILE_LIST:
       sendFileList();
       break;
+
     case CMD_LOAD_FILE:
       sendFileContent(payload);
       break;
+
     case CMD_DELETE_FILE:
       deleteFile(payload);
       break;
-      //default:
-      //Serial.println("{\"error\":\"Unknown command\"}");
+
+    case CMD_LOAD_FILE_CHUNK:
+      handleAnimationChunk(payload, length);
+      break;
+
+      // default:
+      //   Serial.println("{\"error\":\"Unknown command\"}");
   }
 }
+void sendOkResponse(uint8_t command, const char* note = "chunk received") {
+  String payload = String("{\"status\":\"ok\",\"note\":\"") + note + "\"}";
+
+  uint16_t length = payload.length();
+  uint8_t checksum = command ^ (length >> 8) ^ (length & 0xFF);
+
+  for (int i = 0; i < length; i++) {
+    checksum ^= payload[i];
+  }
+
+  Serial.write(HEADER1);
+  Serial.write(HEADER2);
+  Serial.write(command);
+  Serial.write((length >> 8) & 0xFF);
+  Serial.write(length & 0xFF);
+  Serial.write((const uint8_t*)payload.c_str(), length);
+  Serial.write(checksum);
+}
+
+
+void handleAnimationChunk(const String& payload, uint8_t length) {
+  if (length < 4) {
+    sendOkResponse(CMD_LOAD_FILE_CHUNK, "fail: too short");
+    return;
+  }
+
+  const uint8_t* data = (const uint8_t*)payload.c_str();
+
+  uint16_t offset = (data[0] << 8) | data[1];
+  uint16_t totalSize = (data[2] << 8) | data[3];
+  const uint8_t* chunk = &data[4];
+  size_t chunkSize = length - 4;
+
+  if (offset == 0) {
+    receivedSize = 0;
+    expectedSize = totalSize;
+  }
+
+  for (size_t i = 0; i < chunkSize; i++) {
+    if (offset + i < MAX_ANIMATION_SIZE) {
+      animationBuffer[offset + i] = chunk[i];
+    }
+  }
+
+  receivedSize += chunkSize;
+
+  Serial.printf("Chunk received: offset=%d size=%d\n", offset, chunkSize);
+  Serial.printf("Total received: %d / %d\n", receivedSize, expectedSize);
+
+  if (receivedSize >= expectedSize) {
+    Serial.println("Full animation received. Parsing…");
+    loadAnimationFromBuffer(animationBuffer, expectedSize);
+    currentAnimation.saveToFile("savey.anim");
+    sendOkResponse(CMD_LOAD_FILE_CHUNK, "final chunk");
+  } else {
+    sendOkResponse(CMD_LOAD_FILE_CHUNK, "chunk received");
+  }
+}
+
+
+
+
+
+void loadAnimationFromBuffer(const uint8_t* buffer, size_t length) {
+  currentAnimation.clear();
+
+  memcpy(&currentAnimation.header, buffer, sizeof(AnimationHeader));
+
+  size_t offset = sizeof(AnimationHeader);
+  for (uint16_t frame = 0; frame < MAX_FRAMES; frame++) {
+    for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) {
+      uint16_t value = buffer[offset] | (buffer[offset + 1] << 8);
+      currentAnimation.setFrame(frame, channel, value);
+      offset += 2;
+    }
+  }
+
+  uint16_t keyframeCount = buffer[offset] | (buffer[offset + 1] << 8);
+  offset += 2;
+
+  for (uint16_t i = 0; i < keyframeCount; i++) {
+    uint8_t motorId = buffer[offset++];
+    uint16_t frame = buffer[offset] | (buffer[offset + 1] << 8);
+    offset += 2;
+    uint16_t position = buffer[offset] | (buffer[offset + 1] << 8);
+    offset += 2;
+    currentAnimation.addKeyframe(motorId, frame, position);
+  }
+
+  Serial.println("Animation loaded into memory.");
+  currentAnimation.printKeyframes();
+}
+
 
 void sendReply(uint8_t command, const String& payload) {
   uint16_t length = payload.length();  // Supports up to 65,535 bytes
@@ -317,10 +426,7 @@ void sendFileInChunks(const String& filename) {
 
   unsigned long duration = millis() - startTime;
 
-  String finalReply = "{\"status\":\"complete\",\"file\":\"" + filename +
-                      "\",\"chunks\":" + chunksSent +
-                      ",\"bytesSent\":" + totalSize +
-                      ",\"durationMs\":" + duration + "}";
+  String finalReply = "{\"status\":\"complete\",\"file\":\"" + filename + "\",\"chunks\":" + chunksSent + ",\"bytesSent\":" + totalSize + ",\"durationMs\":" + duration + "}";
 
   sendReply(CMD_LOAD_FILE, finalReply);
 }

animation.h

@@ -47,9 +47,9 @@ public:
   uint16_t getFrameCount() const;
   void createSampleSweep(uint8_t seconds);
   void createStaggeredSweep(uint8_t seconds);
+  AnimationHeader header;
 
 private:
-  AnimationHeader header;
   uint16_t data[MAX_FRAMES][NUM_CHANNELS];
     std::vector<Keyframe> keyframes;