From 7dd1aee53c634075cf4d2756ea43227add44e2f1 Mon Sep 17 00:00:00 2001
From: Andy Killorin <37423245+Speedy6451@users.noreply.github.com>
Date: Sat, 12 Apr 2025 19:17:05 -0400
Subject: [PATCH] set trigger mode atomically

---
 buttons.h | 3 ---
 main.c    | 3 +--
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/buttons.h b/buttons.h
index 6f72f6c..3be59b1 100644
--- a/buttons.h
+++ b/buttons.h
@@ -21,9 +21,6 @@
 #define BUTTON_STATE_INCREMENT (BUTTON_PRESSED_STATE/BUTTON_SAMPLES_PRESSED)
 #define BUTTON_STATE_DECREMENT (BUTTON_PRESSED_STATE/BUTTON_SAMPLES_RELEASED)
 
-#define BUTTON_SCAN_RATE 200    // [Hz] button scanning interrupt rate
-#define BUTTON_INT_PRIORITY 32  // button interrupt priority (higher number is lower priority)
-
 #define BUTTON_AUTOREPEAT_INITIAL 100   // how many samples must read pressed before autorepeat starts
 #define BUTTON_AUTOREPEAT_NEXT 10       // how many samples must read pressed before the next repetition
 
diff --git a/main.c b/main.c
index a59aac4..fc22d5c 100644
--- a/main.c
+++ b/main.c
@@ -209,8 +209,7 @@ void handle_user_input() {
 
         switch (button) {
             case S1: // toggle edge
-                trigger_mode++;
-                trigger_mode %= 3;
+                trigger_mode = (trigger_mode + 1) % 3;
                 break;
             case Up: // next scale
                 voltage_scale = (voltage_scale + 1) % VOLTAGE_SCALES;