X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/9051d3beb0c5c4ec1e33749d8f806f5492fbe742..06de32b1c2f55f0003e2940e9053bc63a0be7591:/Projects/USBtoSerial/USBtoSerial.c

diff --git a/Projects/USBtoSerial/USBtoSerial.c b/Projects/USBtoSerial/USBtoSerial.c
index 9ce00bf13..c34fcf70a 100644
--- a/Projects/USBtoSerial/USBtoSerial.c
+++ b/Projects/USBtoSerial/USBtoSerial.c
@@ -37,17 +37,16 @@
 #include "USBtoSerial.h"
 
 /** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
-RingBuffer_t USBtoUSART_Buffer;
+static RingBuffer_t USBtoUSART_Buffer;
 
 /** Underlying data buffer for \ref USBtoUSART_Buffer, where the stored bytes are located. */
-uint8_t      USBtoUSART_Buffer_Data[128];
+static uint8_t      USBtoUSART_Buffer_Data[128];
 
 /** Circular buffer to hold data from the serial port before it is sent to the host. */
-RingBuffer_t USARTtoUSB_Buffer;
+static RingBuffer_t USARTtoUSB_Buffer;
 
 /** Underlying data buffer for \ref USARTtoUSB_Buffer, where the stored bytes are located. */
-uint8_t      USARTtoUSB_Buffer_Data[128];
-
+static uint8_t      USARTtoUSB_Buffer_Data[128];
 
 /** LUFA CDC Class driver interface configuration and state information. This structure is
  *  passed to all CDC Class driver functions, so that multiple instances of the same class
@@ -73,6 +72,7 @@ USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
 			},
 	};
 
+
 /** Main program entry point. This routine contains the overall program flow, including initial
  *  setup of all components and the main program loop.
  */
@@ -100,7 +100,7 @@ int main(void)
 		
 		/* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
 		uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
-		if ((TIFR0 & (1 << TOV0)) || (BufferCount > 200))
+		if ((TIFR0 & (1 << TOV0)) || (BufferCount > (uint8_t)(sizeof(USARTtoUSB_Buffer_Data) * .75)))
 		{
 			/* Clear flush timer expiry flag */
 			TIFR0 |= (1 << TOV0);