Add A/D sampler

Sample A/D at the timer tick, placing data in a ring
of samples.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/ao_timer.c b/ao_timer.c
index 7a81f32e..cb6255d2 100644
--- a/ao_timer.c
+++ b/ao_timer.c
@@ -22,6 +22,7 @@ volatile __data uint16_t ao_time;
 void ao_timer_isr(void) interrupt 9
 {
 	++ao_time;
+	ao_adc_poll();
 	ao_wakeup(DATA_TO_XDATA(&ao_time));
 }