From 4d1c7a34fd00a4dd19e591ea0602f0f47f10d9f0 Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Thu, 5 Mar 2020 17:51:27 -0700
Subject: initial support for Noctigon KR4   (not complete, but far enough that
 it installs and runs) New hardware support features:   - allow using PCINT
 other than 0 (PCINT1, PCINT2, etc)   - option to ignore voltage ADC while the
 button is pressed     (because my prototype shorts the voltage divider to 0
 while the button is down)

---
 spaghetti-monster/fsm-adc.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'spaghetti-monster/fsm-adc.c')

diff --git a/spaghetti-monster/fsm-adc.c b/spaghetti-monster/fsm-adc.c
index 2a3c5c6..2d8d01f 100644
--- a/spaghetti-monster/fsm-adc.c
+++ b/spaghetti-monster/fsm-adc.c
@@ -206,6 +206,12 @@ static inline void ADC_voltage_handler() {
     #define LVP_TIMER_START (VOLTAGE_WARNING_SECONDS*ADC_CYCLES_PER_SECOND)  // N seconds between LVP warnings
     #define LVP_LOWPASS_STRENGTH ADC_CYCLES_PER_SECOND  // lowpass for one second
 
+    #ifdef NO_LVP_WHILE_BUTTON_PRESSED
+    // don't run if button is currently being held
+    // (because the button causes a reading of zero volts)
+    if (button_last_state) return;
+    #endif
+
     uint16_t measurement = adc_values[0];  // latest 10-bit ADC reading
 
     #ifdef USE_VOLTAGE_LOWPASS
-- 
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