Corrected Timer for ATTiny85

[irmp.git] / irsndmain.c

diff --git a/irsndmain.c b/irsndmain.c
index 213a4f84462a4323b83a9967e00d67143f0720f8..ff4838cb76a95a87e52620d2db67baa1faea6779 100644 (file)
--- a/irsndmain.c
+++ b/irsndmain.c
@@ -30,18 +30,18 @@
 void\r
 timer1_init (void)\r
 {\r
-#if defined (__AVR_ATtiny85__)                                      // ATtiny85:\r
-    OCR1A   =  (F_CPU / (2 * F_INTERRUPTS) / 2) - 1;                // compare value: 1/28800 of CPU frequency, presc = 2\r
-    TCCR1   = (1 << CTC1) | (1 << CS11);                            // switch CTC Mode on, set prescaler to 2\r
-#else                                                               // ATmegaXX:\r
-    OCR1A   =  (F_CPU / (2 * F_INTERRUPTS)) - 1;                    // compare value: 1/28800 of CPU frequency\r
-    TCCR1B  = (1 << WGM12) | (1 << CS10);                           // switch CTC Mode on, set prescaler to 1\r
+#if defined (__AVR_ATtiny45__) || defined (__AVR_ATtiny85__)                // ATtiny45 / ATtiny85:\r
+    OCR1A   =  (F_CPU / F_INTERRUPTS / 4) - 1;                              // compare value: 1/15000 of CPU frequency, presc = 4\r
+    TCCR1   = (1 << CTC1) | (1 << CS11) | (1 << CS10);                      // switch CTC Mode on, set prescaler to 4\r
+#else                                                                       // ATmegaXX:\r
+    OCR1A   =  (F_CPU / F_INTERRUPTS) - 1;                                  // compare value: 1/15000 of CPU frequency\r
+    TCCR1B  = (1 << WGM12) | (1 << CS10);                                   // switch CTC Mode on, set prescaler to 1\r
 #endif\r
 \r
 #ifdef TIMSK1\r
-    TIMSK1  = 1 << OCIE1A;                                          // OCIE1A: Interrupt by timer compare\r
+    TIMSK1  = 1 << OCIE1A;                                                  // OCIE1A: Interrupt by timer compare\r
 #else\r
-    TIMSK   = 1 << OCIE1A;                                          // OCIE1A: Interrupt by timer compare\r
+    TIMSK   = 1 << OCIE1A;                                                  // OCIE1A: Interrupt by timer compare\r
 #endif\r
 }\r
 \r