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diff --git a/Marlin/src/HAL/STM32/timers.h b/Marlin/src/HAL/STM32/timers.h
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+++ b/Marlin/src/HAL/STM32/timers.h
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+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ * Copyright (c) 2017 Victor Perez
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <stdint.h>
+#include "../../inc/MarlinConfig.h"
+
+// ------------------------
+// Defines
+// ------------------------
+
+#define FORCE_INLINE __attribute__((always_inline)) inline
+
+// STM32 timers may be 16 or 32 bit. Limiting HAL_TIMER_TYPE_MAX to 16 bits
+// avoids issues with STM32F0 MCUs, which seem to pause timers if UINT32_MAX
+// is written to the register. STM32F4 timers do not manifest this issue,
+// even when writing to 16 bit timers.
+//
+// The range of the timer can be queried at runtime using IS_TIM_32B_COUNTER_INSTANCE.
+// This is a more expensive check than a simple compile-time constant, so its
+// implementation is deferred until the desire for a 32-bit range outweighs the cost
+// of adding a run-time check and HAL_TIMER_TYPE_MAX is refactored to allow unique
+// values for each timer.
+#define hal_timer_t uint32_t
+#define HAL_TIMER_TYPE_MAX UINT16_MAX
+
+#define NUM_HARDWARE_TIMERS 2
+
+#ifndef STEP_TIMER_NUM
+  #define STEP_TIMER_NUM        0  // Timer Index for Stepper
+#endif
+#ifndef PULSE_TIMER_NUM
+  #define PULSE_TIMER_NUM       STEP_TIMER_NUM
+#endif
+#ifndef TEMP_TIMER_NUM
+  #define TEMP_TIMER_NUM        1  // Timer Index for Temperature
+#endif
+
+#define TEMP_TIMER_FREQUENCY 1000   // Temperature::isr() is expected to be called at around 1kHz
+
+// TODO: get rid of manual rate/prescale/ticks/cycles taken for procedures in stepper.cpp
+#define STEPPER_TIMER_RATE 2000000 // 2 Mhz
+extern uint32_t GetStepperTimerClkFreq();
+#define STEPPER_TIMER_PRESCALE (GetStepperTimerClkFreq() / (STEPPER_TIMER_RATE))
+#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
+
+#define PULSE_TIMER_RATE STEPPER_TIMER_RATE
+#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
+
+#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM)
+#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(STEP_TIMER_NUM)
+#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM)
+
+#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
+#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
+
+extern void Step_Handler();
+extern void Temp_Handler();
+
+#ifndef HAL_STEP_TIMER_ISR
+  #define HAL_STEP_TIMER_ISR() void Step_Handler()
+#endif
+#ifndef HAL_TEMP_TIMER_ISR
+  #define HAL_TEMP_TIMER_ISR() void Temp_Handler()
+#endif
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+extern HardwareTimer *timer_instance[];
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency);
+void HAL_timer_enable_interrupt(const uint8_t timer_num);
+void HAL_timer_disable_interrupt(const uint8_t timer_num);
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
+
+// Configure timer priorities for peripherals such as Software Serial or Servos.
+// Exposed here to allow all timer priority information to reside in timers.cpp
+void SetTimerInterruptPriorities();
+
+// FORCE_INLINE because these are used in performance-critical situations
+FORCE_INLINE bool HAL_timer_initialized(const uint8_t timer_num) {
+  return timer_instance[timer_num] != nullptr;
+}
+FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
+  return HAL_timer_initialized(timer_num) ? timer_instance[timer_num]->getCount() : 0;
+}
+
+// NOTE: Method name may be misleading.
+// STM32 has an Auto-Reload Register (ARR) as opposed to a "compare" register
+FORCE_INLINE static void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t overflow) {
+  if (HAL_timer_initialized(timer_num)) {
+    timer_instance[timer_num]->setOverflow(overflow + 1, TICK_FORMAT); // Value decremented by setOverflow()
+    // wiki: "force all registers (Autoreload, prescaler, compare) to be taken into account"
+    // So, if the new overflow value is less than the count it will trigger a rollover interrupt.
+    if (overflow < timer_instance[timer_num]->getCount())  // Added 'if' here because reports say it won't boot without it
+      timer_instance[timer_num]->refresh();
+  }
+}
+
+#define HAL_timer_isr_prologue(TIMER_NUM)
+#define HAL_timer_isr_epilogue(TIMER_NUM)