example: Added OC2A to timer test

Uses OC2A toggle with a VCD trace to demo the new compators.

Signed-off-by: Michel Pollet <buserror@gmail.com>

diff --git a/tests/atmega88_timer16.c b/tests/atmega88_timer16.c
index e587ba4..3319625 100644 (file)
--- a/tests/atmega88_timer16.c
+++ b/tests/atmega88_timer16.c
@@ -47,6 +47,7 @@ const struct avr_mmcu_vcd_trace_t _mytrace[]  _MMCU_ = {
        { AVR_MCU_VCD_SYMBOL("TCNT1H"), .what = (void*)&TCNT1H, },      
        { AVR_MCU_VCD_SYMBOL("tick"), .mask = (1 << 0), .what = (void*)&PORTB, },       
        { AVR_MCU_VCD_SYMBOL("reset_timer"), .mask = (1 << 1), .what = (void*)&PORTB, },        
+       { AVR_MCU_VCD_SYMBOL("OC2A"), .mask = (1 << 3), .what = (void*)&PORTB, },
 };
 
 volatile uint16_t tcnt;
@@ -68,14 +69,16 @@ int main()
        // timer prescaler to 64
        TCCR1B |= (0<<CS12 | 1<<CS11 | 1<<CS10);
 
-       DDRB = 3;
+       DDRB = 5;
        
        //
        // now enable a tick counter
        // using an asynchronous mode
        //
        ASSR |= (1 << AS2);             // use "external" 32.7k crystal source
-       TCCR2A = (1 << WGM21); // use CLK/8 prescale value, clear timer/counter on compareA match
+       // use CLK/8 prescale value, clear timer/counter on compareA match
+       // toggle OC2A pin too
+       TCCR2A = (1 << WGM21) | (1 << COM2A0);
     TCCR2B = (2 << CS20); // prescaler
     OCR2A = 63;        // 64 hz
     TIMSK2  |= (1 << OCIE2A);