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/**
* Marlin 3D Printer Firmware
*
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
* SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
*
* 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>
// --------------------------------------------------------------------------
// Defines
// --------------------------------------------------------------------------
#define RTC_TIMER_NUM 8 // This is not a TC but a RTC
typedef uint32_t hal_timer_t;
#define HAL_TIMER_TYPE_MAX 0xFFFFFFFF
#define HAL_TIMER_RATE F_CPU // frequency of timers peripherals
#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 RTC_TIMER_NUM // Timer Index for Temperature
#endif
#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
#define STEPPER_TIMER_RATE HAL_TIMER_RATE // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
#define STEPPER_TIMER_TICKS_PER_US (STEPPER_TIMER_RATE / 1000000) // stepper timer ticks per µs
#define STEPPER_TIMER_PRESCALE (CYCLES_PER_MICROSECOND / STEPPER_TIMER_TICKS_PER_US)
#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)
#define TC_PRIORITY(t) t == SERVO_TC ? 1 \
: (t == STEP_TIMER_NUM || t == PULSE_TIMER_NUM) ? 2 \
: (t == TEMP_TIMER_NUM) ? 6 \
: 7
#define _TC_HANDLER(t) void TC##t##_Handler()
#define TC_HANDLER(t) _TC_HANDLER(t)
#ifndef HAL_STEP_TIMER_ISR
#define HAL_STEP_TIMER_ISR() TC_HANDLER(STEP_TIMER_NUM)
#endif
#if STEP_TIMER_NUM != PULSE_TIMER_NUM
#define HAL_PULSE_TIMER_ISR() TC_HANDLER(PULSE_TIMER_NUM)
#endif
#if TEMP_TIMER_NUM == RTC_TIMER_NUM
#define HAL_TEMP_TIMER_ISR() void RTC_Handler()
#else
#define HAL_TEMP_TIMER_ISR() TC_HANDLER(TEMP_TIMER_NUM)
#endif
// --------------------------------------------------------------------------
// Types
// --------------------------------------------------------------------------
typedef struct {
union {
Tc *pTc;
Rtc *pRtc;
};
IRQn_Type IRQ_Id;
uint8_t priority;
} tTimerConfig;
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
extern const tTimerConfig TimerConfig[];
// --------------------------------------------------------------------------
// Public functions
// --------------------------------------------------------------------------
void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency);
FORCE_INLINE static void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t compare) {
// Should never be called with timer RTC_TIMER_NUM
Tc * const tc = TimerConfig[timer_num].pTc;
tc->COUNT32.CC[0].reg = compare;
}
FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
// Should never be called with timer RTC_TIMER_NUM
Tc * const tc = TimerConfig[timer_num].pTc;
return (hal_timer_t)tc->COUNT32.CC[0].reg;
}
FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
// Should never be called with timer RTC_TIMER_NUM
Tc * const tc = TimerConfig[timer_num].pTc;
tc->COUNT32.CTRLBSET.reg = TC_CTRLBCLR_CMD_READSYNC;
SYNC(tc->COUNT32.SYNCBUSY.bit.CTRLB || tc->COUNT32.SYNCBUSY.bit.COUNT);
return tc->COUNT32.COUNT.reg;
}
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);
FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
if (timer_num == RTC_TIMER_NUM) {
Rtc * const rtc = TimerConfig[timer_num].pRtc;
// Clear interrupt flag
rtc->MODE0.INTFLAG.reg = RTC_MODE0_INTFLAG_CMP0;
}
else {
Tc * const tc = TimerConfig[timer_num].pTc;
// Clear interrupt flag
tc->COUNT32.INTFLAG.reg = TC_INTFLAG_OVF;
}
}
#define HAL_timer_isr_epilogue(timer_num)
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