temp fix for config query issue

Author: soundanalogous

utility/BLEStream.cpp

@@ -21,6 +21,7 @@ BLEStream::BLEStream(unsigned char req, unsigned char rdy, unsigned char rst) :
   this->_txCount = 0;
   this->_rxHead = this->_rxTail = 0;
   this->_flushed = 0;
+  this->_packetTxCount = 0;
   BLEStream::_instance = this;
 
   addAttribute(this->_uartService);
@@ -109,6 +110,24 @@ int BLEStream::read(void)
 void BLEStream::flush(void)
 {
   if (this->_txCount == 0) return;
+#ifndef _VARIANT_ARDUINO_101_X_
+  long diff = millis() - this->_flushed;
+  // flush() is called approximately every 1ms or less when sending multiple packets and
+  // otherwise no more frequently than BLESTREAM_TXBUFFER_FLUSH_INTERVAL
+  // TODO - determine if 2 is the best value or if something higher is necessary
+  if (diff < 2) {
+    // 2 is the max number of packets that can be sent in short succession
+    // TODO - get the max packet value programatically
+    if (++this->_packetTxCount >= 2) {
+      // delay after 2 packets have been sent in short succession
+      // 100ms is the minimum necessary delay value
+      delay(100);
+      this->_packetTxCount = 0;
+    }
+  } else {
+    this->_packetTxCount = 0;
+  }
+#endif
   this->_txCharacteristic.setValue(this->_txBuffer, this->_txCount);
   this->_flushed = millis();
   this->_txCount = 0;

utility/BLEStream.h

@@ -21,7 +21,7 @@
 #if defined(_VARIANT_ARDUINO_101_X_)
 #define BLESTREAM_TXBUFFER_FLUSH_INTERVAL 30
 #else
-#define BLESTREAM_TXBUFFER_FLUSH_INTERVAL 50
+#define BLESTREAM_TXBUFFER_FLUSH_INTERVAL 80
 #endif
 
 class BLEStream : public BLEPeripheral, public Stream
@@ -53,6 +53,8 @@ class BLEStream : public BLEPeripheral, public Stream
     size_t _txCount;
     unsigned char _txBuffer[_MAX_ATTR_DATA_LEN_];
 
+    uint8_t _packetTxCount;
+
     BLEService _uartService = BLEService("6E400001-B5A3-F393-E0A9-E50E24DCCA9E");
     BLEDescriptor _uartNameDescriptor = BLEDescriptor("2901", "UART");
     BLECharacteristic _rxCharacteristic = BLECharacteristic("6E400002-B5A3-F393-E0A9-E50E24DCCA9E", BLEWriteWithoutResponse, _MAX_ATTR_DATA_LEN_);