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Diffstat (limited to 'Marlin/src/HAL/STM32F1/timers.cpp')
| -rw-r--r-- | Marlin/src/HAL/STM32F1/timers.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/Marlin/src/HAL/STM32F1/timers.cpp b/Marlin/src/HAL/STM32F1/timers.cpp new file mode 100644 index 0000000..8c2df1e --- /dev/null +++ b/Marlin/src/HAL/STM32F1/timers.cpp @@ -0,0 +1,187 @@ +/** + * 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__ |