# HG changeset patch
# User Matt Johnston <matt@ucc.asn.au>
# Date 1372263152 -28800
# Node ID 5d6a841eef82bf88cb8e293c6f82f2576bdbe665
# Parent  320c8cc7df5a28bc2dd1037c567dcf513949011c
/128 prescaler for adc

diff -r 320c8cc7df5a -r 5d6a841eef82 main.c
--- a/main.c	Thu Jun 27 00:12:01 2013 +0800
+++ b/main.c	Thu Jun 27 00:12:32 2013 +0800
@@ -762,8 +762,10 @@
 {
     PRR &= ~_BV(PRADC);
     
-    // /64 prescaler, interrupt
-    ADCSRA = _BV(ADEN) | _BV(ADPS2) | _BV(ADPS1) | _BV(ADIE);
+    // /128 prescaler (86kHz), interrupt
+    ADCSRA = _BV(ADEN) 
+        | _BV(ADPS2) | _BV(ADPS1) | _BV(ADPS0)
+        | _BV(ADIE);
 
     // set to measure 1.1 reference
     ADMUX = admux;