Watchdog cleanup (#15283)

Marlin/src/HAL/HAL.h

 #include "platforms.h"
 
 #include HAL_PATH(.,HAL.h)
+
+inline void watchdog_refresh() {
+  #if ENABLED(USE_WATCHDOG)
+    HAL_watchdog_refresh();
+  #endif
+}

Marlin/src/HAL/HAL_AVR/watchdog.h

 
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or AVR will go into emergency procedures.
-inline void watchdog_reset() { wdt_reset(); }
+inline void HAL_watchdog_refresh() { wdt_reset(); }

Marlin/src/HAL/HAL_DUE/watchdog.h

 
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or AVR will go into emergency procedures.
-inline void watchdog_reset() { watchdogReset(); }
+inline void HAL_watchdog_refresh() { watchdogReset(); }

Marlin/src/HAL/HAL_ESP32/watchdog.h

 void watchdog_init();
 
 // Reset watchdog.
-inline void watchdog_reset() { }
+inline void HAL_watchdog_refresh() { }

Marlin/src/HAL/HAL_LINUX/HAL.h

 void HAL_adc_start_conversion(const uint8_t adc_pin);
 uint16_t HAL_adc_get_result();
 
+// Reset source
+inline void HAL_clear_reset_source(void) {}
+inline uint8_t HAL_get_reset_source(void) { return RST_POWER_ON; }
+
 /* ---------------- Delay in cycles */
 FORCE_INLINE static void DELAY_CYCLES(uint64_t x) {
   Clock::delayCycles(x);

Marlin/src/HAL/HAL_LINUX/watchdog.cpp

 #include "watchdog.h"
 
 void watchdog_init() {}
+void HAL_watchdog_refresh() {}
 
-void HAL_clear_reset_source() {}
-
-uint8_t HAL_get_reset_source() {
-  return RST_POWER_ON;
-}
-
-void watchdog_reset() {}
-
-#else
-  void HAL_clear_reset_source() {}
-  uint8_t HAL_get_reset_source() { return RST_POWER_ON; }
-#endif // USE_WATCHDOG
+#endif
 
 #endif // __PLAT_LINUX__

Marlin/src/HAL/HAL_LINUX/watchdog.h

 #define WDT_TIMEOUT   4000000 // 4 second timeout
 
 void watchdog_init();
-void watchdog_reset();
-void HAL_clear_reset_source();
-uint8_t HAL_get_reset_source();
+void HAL_watchdog_refresh();

Marlin/src/HAL/HAL_LPC1768/HAL.cpp

 #include "../shared/Delay.h"
 #include "../../../gcode/parser.h"
 
+#if ENABLED(USE_WATCHDOG)
+  #include "watchdog.h"
+#endif
+
 // U8glib required functions
 extern "C" void u8g_xMicroDelay(uint16_t val) {
   DELAY_US(val);
   NVIC_SystemReset();
 }
 
+void HAL_clear_reset_source(void) {
+  #if ENABLED(USE_WATCHDOG)
+    watchdog_clear_timeout_flag();
+  #endif
+}
+
+uint8_t HAL_get_reset_source(void) {
+  #if ENABLED(USE_WATCHDOG)
+    if (watchdog_timed_out()) return RST_WATCHDOG;
+  #endif
+  return RST_POWER_ON;
+}
+
 #endif // TARGET_LPC1768

Marlin/src/HAL/HAL_LPC1768/HAL.h

  *  Optionally allows changing the maximum size of the provided value to enable finer PWM duty control [default = 255]
  */
 void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
+
+// Reset source
+void HAL_clear_reset_source(void);
+uint8_t HAL_get_reset_source(void);

Marlin/src/HAL/HAL_LPC1768/watchdog.cpp

   WDT_Start(WDT_TIMEOUT);
 }
 
-void HAL_clear_reset_source() {
-  WDT_ClrTimeOutFlag();
-}
-
-uint8_t HAL_get_reset_source() {
-  if (TEST(WDT_ReadTimeOutFlag(), 0)) return RST_WATCHDOG;
-  return RST_POWER_ON;
-}
-
-void watchdog_reset() {
+void HAL_watchdog_refresh() {
   WDT_Feed();
   #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
     TOGGLE(LED_PIN);  // heartbeat indicator
   #endif
 }
 
-#else
-
-void watchdog_init() {}
-void watchdog_reset() {}
-void HAL_clear_reset_source() {}
-uint8_t HAL_get_reset_source() { return RST_POWER_ON; }
+// Timeout state
+bool watchdog_timed_out() { return TEST(WDT_ReadTimeOutFlag(), 0); }
+void watchdog_clear_timeout_flag() { WDT_ClrTimeOutFlag(); }
 
 #endif // USE_WATCHDOG
 

Marlin/src/HAL/HAL_LPC1768/watchdog.h

 #define WDT_TIMEOUT   4000000 // 4 second timeout
 
 void watchdog_init();
-void watchdog_reset();
-void HAL_clear_reset_source();
-uint8_t HAL_get_reset_source();
+void HAL_watchdog_refresh();
+
+bool watchdog_timed_out();
+void watchdog_clear_timeout_flag();

Marlin/src/HAL/HAL_SAMD51/watchdog.cpp

     WDT->INTENCLR.reg = WDT_INTENCLR_EW;        // Disable early warning interrupt
     WDT->CONFIG.reg = WDT_CONFIG_PER_CYC4096;   // Set at least 4s period for chip reset
 
-    watchdog_reset();
+    HAL_watchdog_refresh();
 
     WDT->CTRLA.reg = WDT_CTRLA_ENABLE;          // Start watchdog now in normal mode
     SYNC(WDT->SYNCBUSY.bit.ENABLE);

Marlin/src/HAL/HAL_SAMD51/watchdog.h

 
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or SAMD will go into emergency procedures.
-inline void watchdog_reset() {
+inline void HAL_watchdog_refresh() {
   SYNC(WDT->SYNCBUSY.bit.CLEAR);        // Test first if previous is 'ongoing' to save time waiting for command execution
   WDT->CLEAR.reg = WDT_CLEAR_CLEAR_KEY;
 }

Marlin/src/HAL/HAL_STM32/watchdog.cpp

 
   void watchdog_init() { IWatchdog.begin(4000000); } // 4 sec timeout
 
-  void watchdog_reset() {
+  void HAL_watchdog_refresh() {
     IWatchdog.reload();
     #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
       TOGGLE(LED_PIN);  // heartbeat indicator

Marlin/src/HAL/HAL_STM32/watchdog.h

 #pragma once
 
 void watchdog_init();
-void watchdog_reset();
+void HAL_watchdog_refresh();

Marlin/src/HAL/HAL_STM32F1/watchdog.cpp

 #include <libmaple/iwdg.h>
 #include "watchdog.h"
 
-void watchdog_reset() {
+void HAL_watchdog_refresh() {
   #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
     TOGGLE(LED_PIN);  // heartbeat indicator
   #endif

Marlin/src/HAL/HAL_STM32F1/watchdog.h

 
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or STM32F1 will reset.
-void watchdog_reset();
+void HAL_watchdog_refresh();

Marlin/src/HAL/HAL_STM32_F4_F7/watchdog.cpp

     }
   }
 
-  void watchdog_reset() {
+  void HAL_watchdog_refresh() {
     /* Refresh IWDG: reload counter */
     if (HAL_IWDG_Refresh(&hiwdg) != HAL_OK) {
       /* Refresh Error */

Marlin/src/HAL/HAL_STM32_F4_F7/watchdog.h

 extern IWDG_HandleTypeDef hiwdg;
 
 void watchdog_init();
-void watchdog_reset();
+void HAL_watchdog_refresh();

Marlin/src/HAL/HAL_TEENSY31_32/watchdog.h

 
 void watchdog_init();
 
-inline void watchdog_reset() {
+inline void HAL_watchdog_refresh() {
   // Watchdog refresh sequence
   WDOG_REFRESH = 0xA602;
   WDOG_REFRESH = 0xB480;

Marlin/src/HAL/HAL_TEENSY35_36/watchdog.h

 
 void watchdog_init();
 
-inline void watchdog_reset() {
+inline void HAL_watchdog_refresh() {
   // Watchdog refresh sequence
   WDOG_REFRESH = 0xA602;
   WDOG_REFRESH = 0xB480;

Marlin/src/Marlin.cpp

   #if HAS_KILL
 
     // Wait for kill to be released
-    while (!READ(KILL_PIN)) {
-      #if ENABLED(USE_WATCHDOG)
-        watchdog_reset();
-      #endif
-    }
+    while (!READ(KILL_PIN)) watchdog_refresh();
 
     // Wait for kill to be pressed
-    while (READ(KILL_PIN)) {
-      #if ENABLED(USE_WATCHDOG)
-        watchdog_reset();
-      #endif
-    }
+    while (READ(KILL_PIN)) watchdog_refresh();
 
     void (*resetFunc)() = 0;  // Declare resetFunc() at address 0
     resetFunc();                  // Jump to address 0
 
   #else // !HAS_KILL
 
-    for (;;) {
-      #if ENABLED(USE_WATCHDOG)
-        watchdog_reset();
-      #endif
-    } // Wait for reset
+    for (;;) watchdog_refresh(); // Wait for reset
 
   #endif // !HAS_KILL
 }

Marlin/src/gcode/config/M43.cpp

   #define GET_PIN_MAP_PIN_M43(Q) GET_PIN_MAP_PIN(Q)
 #endif
 
-inline void _watchdog_reset() {
-  #if ENABLED(USE_WATCHDOG)
-    watchdog_reset();
-  #endif
-}
-
 inline void toggle_pins() {
   const bool ignore_protection = parser.boolval('I');
   const int repeat = parser.intval('R', 1),
       SERIAL_EOL();
     }
     else {
-      _watchdog_reset();
+      watchdog_refresh();
       report_pin_state_extended(pin, ignore_protection, true, "Pulsing   ");
       #if AVR_AT90USB1286_FAMILY // Teensy IDEs don't know about these pins so must use FASTIO
         if (pin == TEENSY_E2) {
       {
         pinMode(pin, OUTPUT);
         for (int16_t j = 0; j < repeat; j++) {
-          _watchdog_reset(); extDigitalWrite(pin, 0); safe_delay(wait);
-          _watchdog_reset(); extDigitalWrite(pin, 1); safe_delay(wait);
-          _watchdog_reset(); extDigitalWrite(pin, 0); safe_delay(wait);
-          _watchdog_reset();
+          watchdog_refresh(); extDigitalWrite(pin, 0); safe_delay(wait);
+          watchdog_refresh(); extDigitalWrite(pin, 1); safe_delay(wait);
+          watchdog_refresh(); extDigitalWrite(pin, 0); safe_delay(wait);
+          watchdog_refresh();
         }
       }
     }

Marlin/src/gcode/feature/L6470/M916-918.cpp

         }
         DEBUG_ECHOLNPGM(".");
         reset_stepper_timeout(); // reset_stepper_timeout to keep steppers powered
-        watchdog_reset();   // beat the dog
+        watchdog_refresh();
         safe_delay(5000);
         status_composite_temp = 0;
         for (j = 0; j < driver_count; j++) {

Marlin/src/module/temperature.cpp

 
   #if EARLY_WATCHDOG
     // If thermal manager is still not running, make sure to at least reset the watchdog!
-    if (!inited) return watchdog_reset();
+    if (!inited) return watchdog_refresh();
   #endif
 
   #if BOTH(PROBING_HEATERS_OFF, BED_LIMIT_SWITCHING)
     filwidth.update_measured_mm();
   #endif
 
-  #if ENABLED(USE_WATCHDOG)
-    // Reset the watchdog after we know we have a temperature measurement.
-    watchdog_reset();
-  #endif
+  // Reset the watchdog on good temperature measurement
+  watchdog_refresh();
 
   temp_meas_ready = false;
 }

Marlin/src/sd/Sd2Card.cpp

   const millis_t init_timeout = millis() + SD_INIT_TIMEOUT;
   uint32_t arg;
 
-  // If init takes more than 4s it could trigger
-  // watchdog leading to a reboot loop.
-  #if ENABLED(USE_WATCHDOG)
-    watchdog_reset();
-  #endif
+  watchdog_refresh(); // In case init takes too long
 
   // Set pin modes
   extDigitalWrite(chipSelectPin_, HIGH);  // For some CPUs pinMode can write the wrong data so init desired data value first
   // Must supply min of 74 clock cycles with CS high.
   for (uint8_t i = 0; i < 10; i++) spiSend(0xFF);
 
-  // Initialization can cause the watchdog to timeout, so reinit it here
-  #if ENABLED(USE_WATCHDOG)
-    watchdog_reset();
-  #endif
+  watchdog_refresh(); // In case init takes too long
 
   // Command to go idle in SPI mode
   while ((status_ = cardCommand(CMD0, 0)) != R1_IDLE_STATE) {
     crcSupported = (cardCommand(CMD59, 1) == R1_IDLE_STATE);
   #endif
 
-  // Initialization can cause the watchdog to timeout, so reinit it here
-  #if ENABLED(USE_WATCHDOG)
-    watchdog_reset();
-  #endif
+  watchdog_refresh(); // In case init takes too long
 
   // check SD version
   for (;;) {
     }
   }
 
-  // Initialization can cause the watchdog to timeout, so reinit it here
-  #if ENABLED(USE_WATCHDOG)
-    watchdog_reset();
-  #endif
+  watchdog_refresh(); // In case init takes too long
 
   // Initialize card and send host supports SDHC if SD2
   arg = type() == SD_CARD_TYPE_SD2 ? 0x40000000 : 0;

buildroot/share/tests/megaatmega2560-tests

 opt_set TEMP_SENSOR_BED 2
 opt_set GRID_MAX_POINTS_X 16
 opt_set FANMUX0_PIN 53
+opt_disable USE_WATCHDOG
 opt_enable REPRAP_DISCOUNT_SMART_CONTROLLER LCD_PROGRESS_BAR LCD_PROGRESS_BAR_TEST \
            PIDTEMPBED FIX_MOUNTED_PROBE Z_SAFE_HOMING CODEPENDENT_XY_HOMING \
            EEPROM_SETTINGS SDSUPPORT SD_REPRINT_LAST_SELECTED_FILE BINARY_FILE_TRANSFER \

platformio.ini

 #
 [env:linux_native]
 platform        = native
-build_flags     = -D__PLAT_LINUX__ -std=gnu++17 -ggdb -g -lrt -lpthread -D__MARLIN_FIRMWARE__
+build_flags     = -D__PLAT_LINUX__ -std=gnu++17 -ggdb -g -lrt -lpthread -D__MARLIN_FIRMWARE__ -Wno-expansion-to-defined
 src_build_flags = -Wall -IMarlin/src/HAL/HAL_LINUX/include
 build_unflags   = -Wall
 lib_ldf_mode    = off