timer: Also reconfigure on writing the WGM bits

Some broken code configure the clock source before
setting the waveform bits.

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

diff --git a/simavr/sim/avr_timer.c b/simavr/sim/avr_timer.c
index ce66983..5d658a5 100644 (file)
--- a/simavr/sim/avr_timer.c
+++ b/simavr/sim/avr_timer.c
@@ -407,6 +407,7 @@ void avr_timer_init(avr_t * avr, avr_timer_t * p)
        avr_register_vector(avr, &p->overflow);
        avr_register_vector(avr, &p->icr);
 
+       avr_register_io_write(avr, p->wgm[0].reg, avr_timer_write, p);
        avr_register_io_write(avr, p->cs[0].reg, avr_timer_write, p);
 
        // this assumes all the "pending" interrupt bits are in the same