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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 <http://www.gnu.org/licenses/>.
- *
- */
-
- /**
- * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
- */
-
- #ifdef __STM32F1__
-
- #include "../../inc/MarlinConfig.h"
- #include "HAL.h"
- #include "timers.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 HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
- 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.
- */
- break;
- }
-
- /**
- * 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);
- nvic_irq_set_priority(irq_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);
- nvic_irq_set_priority(irq_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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