Set RTS Watermarks dependend of rx-buffersize

teensy3/serial1.c

 #ifndef SERIAL1_RX_BUFFER_SIZE
 #define SERIAL1_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL1_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL1_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest
 
 

teensy3/serial2.c

 #ifndef SERIAL2_RX_BUFFER_SIZE
 #define SERIAL2_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL2_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL2_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest
 
 ////////////////////////////////////////////////////////////////

teensy3/serial3.c

 #ifndef SERIAL3_RX_BUFFER_SIZE
 #define SERIAL3_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL3_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL3_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest
 
 

teensy3/serial4.c

 #ifndef SERIAL4_RX_BUFFER_SIZE
 #define SERIAL4_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL4_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL4_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest
 
 

teensy3/serial5.c

 #ifndef SERIAL5_RX_BUFFER_SIZE
 #define SERIAL5_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL5_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL5_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest
 
 

teensy3/serial6.c

 #ifndef SERIAL6_RX_BUFFER_SIZE
 #define SERIAL6_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL6_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL6_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest
 
 

teensy3/serial6_lpuart.c

 #ifndef SERIAL6_RX_BUFFER_SIZE
 #define SERIAL6_RX_BUFFER_SIZE     64 // number of incoming bytes to buffer
 #endif
-#define RTS_HIGH_WATERMARK 40 // RTS requests sender to pause
-#define RTS_LOW_WATERMARK  26 // RTS allows sender to resume
+#define RTS_HIGH_WATERMARK (SERIAL6_RX_BUFFER_SIZE-24) // RTS requests sender to pause
+#define RTS_LOW_WATERMARK  (SERIAL6_RX_BUFFER_SIZE-38) // RTS allows sender to resume
 #define IRQ_PRIORITY  64  // 0 = highest priority, 255 = lowest