Diff: ISR_TX.cpp

Revision:

0:eb2522b41db8

Child:

2:b936b4acbd92

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ISR_TX.cpp	Sat Nov 20 16:54:05 2010 +0000
@@ -0,0 +1,52 @@
+/*
+    Copyright (c) 2010 Andy Kirkham
+ 
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+ 
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+ 
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.
+*/
+
+#include "MODSERIAL.h"
+#include "MACROS.h"
+#include "IOMACROS.h"
+
+namespace AjK {
+
+void 
+MODSERIAL::isr_tx(void)
+{
+    if (_base) {
+        while (! MODSERIAL_TX_BUFFER_EMPTY && MODSERIAL_THR_HAS_SPACE ) {
+            _THR = txc = (uint8_t)(buffer[TxIrq][buffer_out[TxIrq]]);
+            buffer_count[TxIrq]--;   
+            buffer_out[TxIrq]++;
+            if (buffer_out[TxIrq] >= buffer_size[TxIrq]) {
+                buffer_out[TxIrq] = 0;
+            }
+            _isr[TxIrq].call();
+        }
+        
+        if ( MODSERIAL_TX_BUFFER_EMPTY && MODSERIAL_THR_HAS_SPACE ) {
+            _IER = 1;
+            _isr[TxEmpty].call();
+        }
+    }    
+}
+
+}; // namespace AjK ends
+
+