Disable all peripheral functions globally. Enable used functions when needed.

[z180-stamp.git] / avr / main.c

diff --git a/avr/main.c b/avr/main.c
index 65622ccfe5316d11d8cb5908809218bb397508c6..9d7c89feaa9c2412147bed0def0511ecb4ac881c 100644 (file)
--- a/avr/main.c
+++ b/avr/main.c
@@ -77,11 +77,15 @@ void setup_avr(void)
        MCUCR = _BV(JTD);
        MCUCR = _BV(JTD);
 
-       /* disable unused peripherals */
-       PRR0 = _BV(PRTIM0) | _BV(PRADC);
+       /* Disable peripherals. Enable individually in respective init function. */
+       PRR0 = _BV(PRTWI) |
+               _BV(PRTIM2) | _BV(PRTIM0) | _BV(PRTIM1) |
+               _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC);
+
        PRR1 = _BV(PRTIM5) | _BV(PRTIM4) | _BV(PRTIM3) |
                _BV(PRUSART3) | _BV(PRUSART2) | _BV(PRUSART1);
 
+
        /* disable analog comparator */
        ACSR = _BV(ACD);
        /* Ports */
@@ -91,7 +95,7 @@ void setup_avr(void)
        CLKPR = 0;
 
        /* Timer */
-
+       PRR0 &= ~_BV(PRTIM2);
        OCR2A = F_CPU / 256 / 1000 - 1; /* Timer2: 1000Hz interval (OC2A) */
        TCCR2A = (0b10 << WGM20);       /* CTC Mode */
        TCCR2B = (0b110 << CS20);       /* Prescaler 256 */