🐛 Fix compact sensitive pins array (MarlinFirmware#22184)

alrtprogrammer · Jun 21, 2021 · a0f7f0e · a0f7f0e
1 parent f3e0bc7
commit a0f7f0e
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Showing 2 changed files with 13 additions and 10 deletions.
diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
@@ -282,19 +282,22 @@ bool wait_for_heatup = true;
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wnarrowing"
 
-#ifdef RUNTIME_ONLY_ANALOG_TO_DIGITAL
- static const pin_t sensitive_pins[] PROGMEM = { SENSITIVE_PINS };
-#else
+#ifndef RUNTIME_ONLY_ANALOG_TO_DIGITAL
  template <pin_t ...D>
- constexpr pin_t OnlyPins<-2, D...>::table[sizeof...(D)];
- #define sensitive_pins OnlyPins<SENSITIVE_PINS>::table
+ constexpr pin_t OnlyPins<_SP_END, D...>::table[sizeof...(D)];
 #endif
 
 bool pin_is_protected(const pin_t pin) {
- LOOP_L_N(i, COUNT(sensitive_pins)) {
- pin_t sensitive_pin;
- memcpy_P(&sensitive_pin, &sensitive_pins[i], sizeof(pin_t));
- if (pin == sensitive_pin) return true;
+ #ifdef RUNTIME_ONLY_ANALOG_TO_DIGITAL
+ static const pin_t sensitive_pins[] PROGMEM = { SENSITIVE_PINS };
+ const size_t pincount = COUNT(sensitive_pins);
+ #else
+ static constexpr size_t pincount = OnlyPins<SENSITIVE_PINS>::size;
+ static const pin_t (&sensitive_pins)[pincount] PROGMEM = OnlyPins<SENSITIVE_PINS>::table;
+ #endif
+ LOOP_L_N(i, pincount) {
+ const pin_t * const pptr = &sensitive_pins[i];
+ if (pin == (sizeof(pin_t) == 2 ? (pin_t)pgm_read_word(pptr) : (pin_t)pgm_read_byte(pptr))) return true;
  }
  return false;
 }

diff --git a/Marlin/src/pins/sensitive_pins.h b/Marlin/src/pins/sensitive_pins.h
@@ -882,7 +882,7 @@
 
  // Remove -2 from the front, emit the rest, cease propagation
  template<pin_t ...D>
- struct OnlyPins<_SP_END, D...> { static constexpr pin_t table[sizeof...(D)] PROGMEM = { D... }; };
+ struct OnlyPins<_SP_END, D...> { static constexpr size_t size = sizeof...(D); static constexpr pin_t table[sizeof...(D)] PROGMEM = { D... }; };
 #endif
 
 #define SENSITIVE_PINS \