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Marlin-Artillery-M600/Marlin/src/HAL/HAL_STM32F1/HAL_timers_Stm32f1.h

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/**
* Marlin 3D Printer Firmware
*
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
*
*/
/**
* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
*/
#ifndef _HAL_TIMERS_STM32F1_H
#define _HAL_TIMERS_STM32F1_H
// --------------------------------------------------------------------------
// Includes
// --------------------------------------------------------------------------
#include <stdint.h>
// --------------------------------------------------------------------------
// Defines
// --------------------------------------------------------------------------
/**
* TODO: Check and confirm what timer we will use for each Temps and stepper driving.
* We should probable drive temps with PWM.
*/
#define FORCE_INLINE __attribute__((always_inline)) inline
typedef uint16_t hal_timer_t;
#define HAL_TIMER_TYPE_MAX 0xFFFF
#define STEP_TIMER_NUM 5 // index of timer to use for stepper
#define STEP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
#define TEMP_TIMER_NUM 2 // index of timer to use for temperature
#define TEMP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
#define HAL_TIMER_RATE (F_CPU) // frequency of timers peripherals
#define STEPPER_TIMER_PRESCALE 36 // prescaler for setting stepper timer, 2Mhz
#define HAL_STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
#define HAL_TICKS_PER_US ((HAL_STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per us
#define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
#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 ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt (TEMP_TIMER_NUM)
#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt (TEMP_TIMER_NUM)
#define HAL_ENABLE_ISRs() do { if (thermalManager.in_temp_isr)DISABLE_TEMPERATURE_INTERRUPT(); else ENABLE_TEMPERATURE_INTERRUPT(); ENABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
// TODO change this
#define HAL_TEMP_TIMER_ISR extern "C" void tempTC_Handler(void)
#define HAL_STEP_TIMER_ISR extern "C" void stepTC_Handler(void)
extern "C" void tempTC_Handler(void);
extern "C" void stepTC_Handler(void);
// --------------------------------------------------------------------------
// Types
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
static HardwareTimer StepperTimer(STEP_TIMER_NUM);
static HardwareTimer TempTimer(TEMP_TIMER_NUM);
// --------------------------------------------------------------------------
// Public functions
// --------------------------------------------------------------------------
void HAL_timer_start (uint8_t timer_num, uint32_t frequency);
void HAL_timer_enable_interrupt(uint8_t timer_num);
void HAL_timer_disable_interrupt(uint8_t timer_num);
/**
* NOTE: By default libmaple sets ARPE = 1, which means the Auto reload register is preloaded (will only update with an update event)
* Thus we have to pause the timer, update the value, refresh, resume the timer.
* That seems like a big waste of time and may be better to change the timer config to ARPE = 0, so ARR can be updated any time.
* We are using a Channel in each timer in Capture/Compare mode. We could also instead use the Time Update Event Interrupt, but need to disable ARPE
* so we can change the ARR value on the fly (without calling refresh), and not get an interrupt right there because we caused an UEV.
* This mode pretty much makes 2 timers unusable for PWM since they have their counts updated all the time on ISRs.
* The way Marlin manages timer interrupts doesn't make for an efficient usage in STM32F1
* Todo: Look at that possibility later.
*/
static FORCE_INLINE void HAL_timer_set_count (uint8_t timer_num, uint32_t count) {
switch (timer_num) {
case STEP_TIMER_NUM:
StepperTimer.pause();
StepperTimer.setCompare (STEP_TIMER_CHAN, count);
StepperTimer.refresh ();
StepperTimer.resume ();
break;
case TEMP_TIMER_NUM:
TempTimer.pause();
TempTimer.setCompare (TEMP_TIMER_CHAN, count);
TempTimer.refresh ();
TempTimer.resume ();
break;
default:
break;
}
}
static FORCE_INLINE hal_timer_t HAL_timer_get_count (uint8_t timer_num) {
hal_timer_t temp;
switch (timer_num) {
case STEP_TIMER_NUM:
temp = StepperTimer.getCompare(STEP_TIMER_CHAN);
break;
case TEMP_TIMER_NUM:
temp = TempTimer.getCompare(TEMP_TIMER_CHAN);
break;
default:
temp = 0;
break;
}
return temp;
}
static FORCE_INLINE hal_timer_t HAL_timer_get_current_count(uint8_t timer_num) {
hal_timer_t temp;
switch (timer_num) {
case STEP_TIMER_NUM:
temp = StepperTimer.getCount();
break;
case TEMP_TIMER_NUM:
temp = TempTimer.getCount();
break;
default:
temp = 0;
break;
}
return temp;
}
//void HAL_timer_isr_prologue (uint8_t timer_num);
static FORCE_INLINE void HAL_timer_isr_prologue(uint8_t timer_num) {
switch (timer_num) {
case STEP_TIMER_NUM:
StepperTimer.pause();
StepperTimer.setCount(0);
StepperTimer.refresh();
StepperTimer.resume();
break;
case TEMP_TIMER_NUM:
TempTimer.pause();
TempTimer.setCount(0);
TempTimer.refresh();
TempTimer.resume();
break;
default:
break;
}
}
#endif // _HAL_TIMERS_STM32F1_H