diff --git a/I2CManager.h b/I2CManager.h
index 08d81d4..b380294 100644
--- a/I2CManager.h
+++ b/I2CManager.h
@@ -418,6 +418,27 @@ public:
 #if !defined(I2C_USE_WIRE)
   I2CRB *nextRequest;  // Used by non-blocking devices for I2CRB queue management.
 #endif
+
+  inline void dump() {
+    switch (operation & OPERATION_MASK) {
+    case OPERATION_READ:
+      DIAG(F("Read addr=%x buf=%x, len=%d"), i2cAddress, readBuffer, readLen);
+      break;
+    case OPERATION_SEND:
+      DIAG(F("Send addr=%x buf=%x, len=%d"), i2cAddress, writeBuffer, writeLen);
+      break;
+    case OPERATION_SEND_P:
+      DIAG(F("SendP addr=%x buf=%x, len=%d"), i2cAddress, writeBuffer, writeLen);
+      break;
+    case OPERATION_REQUEST:
+      DIAG(F("Request addr=%x rbuf=%x, rlen=%d rbuf=%x, rlen=%d"), i2cAddress, readBuffer, readLen, writeBuffer, writeLen);
+      break;
+    default:
+      DIAG(F("No Op... WHAT???"));
+      break;
+    }
+  };
+
 };
 
 // I2C Manager
diff --git a/I2CManager_Wire.h b/I2CManager_Wire.h
index 1fd4d67..e8d5668 100644
--- a/I2CManager_Wire.h
+++ b/I2CManager_Wire.h
@@ -146,6 +146,7 @@ uint8_t I2CManagerClass::write_P(I2CAddress address, const uint8_t buffer[], uin
 uint8_t I2CManagerClass::read(I2CAddress address, uint8_t readBuffer[], uint8_t readSize,
                               const uint8_t writeBuffer[], uint8_t writeSize, I2CRB *rb)
 {
+  DIAG(F("I2CManagerClass::read()"));
   uint8_t status, muxStatus;
   uint8_t nBytes = 0;
   uint8_t retryCount = 0;
@@ -210,6 +211,11 @@ uint8_t I2CManagerClass::read(I2CAddress address, uint8_t readBuffer[], uint8_t
  * the non-blocking version.
  ***************************************************************************/
 void I2CManagerClass::queueRequest(I2CRB *req) {
+  if (req==NULL) {
+    DIAG(F("NOOOOOOOOOOO"));
+    return;
+  }
+  req->dump();
   switch (req->operation & OPERATION_MASK) {
     case OPERATION_READ:
       read(req->i2cAddress, req->readBuffer, req->readLen, NULL, 0, req);
@@ -223,6 +229,9 @@ void I2CManagerClass::queueRequest(I2CRB *req) {
     case OPERATION_REQUEST:
       read(req->i2cAddress, req->readBuffer, req->readLen, req->writeBuffer, req->writeLen, req);
       break;
+    default:
+      DIAG(F("No Op... WHAT???"));
+      break;
   }
 }