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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) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
*
* 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
/**
* HAL Timers for Teensy 4.0 (IMXRT1062DVL6A) / 4.1 (IMXRT1062DVJ6A)
*/
#include <stdint.h>
// ------------------------
// Defines
// ------------------------
#define FORCE_INLINE __attribute__((always_inline)) inline
typedef uint32_t hal_timer_t;
#define HAL_TIMER_TYPE_MAX 0xFFFFFFFE
#define GPT_TIMER_RATE F_BUS_ACTUAL // 150MHz
#define GPT1_TIMER_PRESCALE 2
#define GPT2_TIMER_PRESCALE 10
#define GPT1_TIMER_RATE (GPT_TIMER_RATE / GPT1_TIMER_PRESCALE) // 75MHz
#define GPT2_TIMER_RATE (GPT_TIMER_RATE / GPT2_TIMER_PRESCALE) // 15MHz
#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_RATE 1000000
#define TEMP_TIMER_FREQUENCY 1000
#define STEPPER_TIMER_RATE GPT1_TIMER_RATE
#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000)
#define STEPPER_TIMER_PRESCALE ((GPT_TIMER_RATE / 1000000) / STEPPER_TIMER_TICKS_PER_US)
#define PULSE_TIMER_RATE STEPPER_TIMER_RATE // frequency of pulse timer
#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)
#ifndef HAL_STEP_TIMER_ISR
#define HAL_STEP_TIMER_ISR() extern "C" void stepTC_Handler() // GPT1_Handler()
#endif
#ifndef HAL_TEMP_TIMER_ISR
#define HAL_TEMP_TIMER_ISR() extern "C" void tempTC_Handler() // GPT2_Handler()
#endif
extern "C" {
void stepTC_Handler();
void tempTC_Handler();
}
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) {
switch (timer_num) {
case 0:
GPT1_OCR1 = compare - 1;
break;
case 1:
GPT2_OCR1 = compare - 1;
break;
}
}
FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
switch (timer_num) {
case 0: return GPT1_OCR1;
case 1: return GPT2_OCR1;
}
return 0;
}
FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
switch (timer_num) {
case 0: return GPT1_CNT;
case 1: return GPT2_CNT;
}
return 0;
}
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);
void HAL_timer_isr_prologue(const uint8_t timer_num);
//void HAL_timer_isr_epilogue(const uint8_t timer_num) {}
#define HAL_timer_isr_epilogue(TIMER_NUM)
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