merged irq-refactor branch, which fixes some small but long-standing issues:

- occasional missed button events while asleep
- occasional short/aborted frames in aux LED sleep animation
- rare case of bogus voltage and/or temperature values
- fixed issue where nice_delay_ms() didn't work in setup()
- fixed theoretical possibility of extra-noisy buttons causing a hang

Also does some other things:
- cleans up the ADC code significantly
- adds a voltage stabilizer/lowpass option (enabled on t1634 builds)
- greatly reduces time spent per interrupt,
  which might make a future PWM-DSM technique possible
- moves most interrupt-handling logic to a non-critical code path,
  deferring that code until timing doesn't matter as much
- sped up button state measurements
- turned off muggle mode on a couple builds which were too big

1 files changed, 1 insertions, 0 deletions

diff --git a/spaghetti-monster/fsm-pcint.h b/spaghetti-monster/fsm-pcint.h
index ec3ae4b..a7f3733 100644
--- a/spaghetti-monster/fsm-pcint.h
+++ b/spaghetti-monster/fsm-pcint.h
@@ -20,6 +20,7 @@
 #ifndef FSM_PCINT_H
 #define FSM_PCINT_H
 
+volatile uint8_t irq_pcint = 0;  // pin change interrupt happened?
 //static volatile uint8_t button_was_pressed;
 #define BP_SAMPLES 32
 volatile uint8_t button_last_state;