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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/>.
*
*/
/**
* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
*/
#ifdef __STM32F1__
#include "../../inc/MarlinConfig.h"
// ------------------------
// Local defines
// ------------------------
// ------------------------
// Public functions
// ------------------------
/**
* Timer_clock1: Prescaler 2 -> 36 MHz
* Timer_clock2: Prescaler 8 -> 9 MHz
* Timer_clock3: Prescaler 32 -> 2.25 MHz
* Timer_clock4: Prescaler 128 -> 562.5 kHz
*/
/**
* TODO: Calculate Timer prescale value, so we get the 32bit to adjust
*/
void timer_set_interrupt_priority(uint_fast8_t timer_num, uint_fast8_t priority) {
nvic_irq_num irq_num;
switch (timer_num) {
case 1: irq_num = NVIC_TIMER1_CC; break;
case 2: irq_num = NVIC_TIMER2; break;
case 3: irq_num = NVIC_TIMER3; break;
case 4: irq_num = NVIC_TIMER4; break;
case 5: irq_num = NVIC_TIMER5; break;
#ifdef STM32_HIGH_DENSITY
// 6 & 7 are basic timers, avoid them
case 8: irq_num = NVIC_TIMER8_CC; break;
#endif
default:
/**
* This should never happen. Add a Sanitycheck for timer number.
* Should be a general timer since basic timers have no CC channels.
*/
return;
}
nvic_irq_set_priority(irq_num, priority);
}
void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
/**
* Give the Stepper ISR a higher priority (lower number)
* so it automatically preempts the Temperature ISR.
*/
switch (timer_num) {
case STEP_TIMER_NUM:
timer_pause(STEP_TIMER_DEV);
timer_set_mode(STEP_TIMER_DEV, STEP_TIMER_CHAN, TIMER_OUTPUT_COMPARE); // counter
timer_set_count(STEP_TIMER_DEV, 0);
timer_set_prescaler(STEP_TIMER_DEV, (uint16_t)(STEPPER_TIMER_PRESCALE - 1));
timer_set_reload(STEP_TIMER_DEV, 0xFFFF);
timer_oc_set_mode(STEP_TIMER_DEV, STEP_TIMER_CHAN, TIMER_OC_MODE_FROZEN, TIMER_OC_NO_PRELOAD); // no output pin change
timer_set_compare(STEP_TIMER_DEV, STEP_TIMER_CHAN, _MIN(hal_timer_t(HAL_TIMER_TYPE_MAX), (STEPPER_TIMER_RATE) / frequency));
timer_no_ARR_preload_ARPE(STEP_TIMER_DEV); // Need to be sure no preload on ARR register
timer_attach_interrupt(STEP_TIMER_DEV, STEP_TIMER_CHAN, stepTC_Handler);
timer_set_interrupt_priority(STEP_TIMER_NUM, STEP_TIMER_IRQ_PRIO);
timer_generate_update(STEP_TIMER_DEV);
timer_resume(STEP_TIMER_DEV);
break;
case TEMP_TIMER_NUM:
timer_pause(TEMP_TIMER_DEV);
timer_set_mode(TEMP_TIMER_DEV, TEMP_TIMER_CHAN, TIMER_OUTPUT_COMPARE);
timer_set_count(TEMP_TIMER_DEV, 0);
timer_set_prescaler(TEMP_TIMER_DEV, (uint16_t)(TEMP_TIMER_PRESCALE - 1));
timer_set_reload(TEMP_TIMER_DEV, 0xFFFF);
timer_set_compare(TEMP_TIMER_DEV, TEMP_TIMER_CHAN, _MIN(hal_timer_t(HAL_TIMER_TYPE_MAX), (F_CPU) / (TEMP_TIMER_PRESCALE) / frequency));
timer_attach_interrupt(TEMP_TIMER_DEV, TEMP_TIMER_CHAN, tempTC_Handler);
timer_set_interrupt_priority(TEMP_TIMER_NUM, TEMP_TIMER_IRQ_PRIO);
timer_generate_update(TEMP_TIMER_DEV);
timer_resume(TEMP_TIMER_DEV);
break;
}
}
void HAL_timer_enable_interrupt(const uint8_t timer_num) {
switch (timer_num) {
case STEP_TIMER_NUM: ENABLE_STEPPER_DRIVER_INTERRUPT(); break;
case TEMP_TIMER_NUM: ENABLE_TEMPERATURE_INTERRUPT(); break;
}
}
void HAL_timer_disable_interrupt(const uint8_t timer_num) {
switch (timer_num) {
case STEP_TIMER_NUM: DISABLE_STEPPER_DRIVER_INTERRUPT(); break;
case TEMP_TIMER_NUM: DISABLE_TEMPERATURE_INTERRUPT(); break;
}
}
static inline bool timer_irq_enabled(const timer_dev * const dev, const uint8_t interrupt) {
return bool(*bb_perip(&(dev->regs).gen->DIER, interrupt));
}
bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
switch (timer_num) {
case STEP_TIMER_NUM: return timer_irq_enabled(STEP_TIMER_DEV, STEP_TIMER_CHAN);
case TEMP_TIMER_NUM: return timer_irq_enabled(TEMP_TIMER_DEV, TEMP_TIMER_CHAN);
}
return false;
}
timer_dev* get_timer_dev(int number) {
switch (number) {
#if STM32_HAVE_TIMER(1)
case 1: return &timer1;
#endif
#if STM32_HAVE_TIMER(2)
case 2: return &timer2;
#endif
#if STM32_HAVE_TIMER(3)
case 3: return &timer3;
#endif
#if STM32_HAVE_TIMER(4)
case 4: return &timer4;
#endif
#if STM32_HAVE_TIMER(5)
case 5: return &timer5;
#endif
#if STM32_HAVE_TIMER(6)
case 6: return &timer6;
#endif
#if STM32_HAVE_TIMER(7)
case 7: return &timer7;
#endif
#if STM32_HAVE_TIMER(8)
case 8: return &timer8;
#endif
#if STM32_HAVE_TIMER(9)
case 9: return &timer9;
#endif
#if STM32_HAVE_TIMER(10)
case 10: return &timer10;
#endif
#if STM32_HAVE_TIMER(11)
case 11: return &timer11;
#endif
#if STM32_HAVE_TIMER(12)
case 12: return &timer12;
#endif
#if STM32_HAVE_TIMER(13)
case 13: return &timer13;
#endif
#if STM32_HAVE_TIMER(14)
case 14: return &timer14;
#endif
default: return nullptr;
}
}
#endif // __STM32F1__
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