2ec4113cb2
Some to correct missing files from previous PR to completely avoid HardwareTimer Class (reduce overhead). Some changes to formatting. Changes to DMA ADC to work correctly. Change to F1 sanity check.
171 lines
6.5 KiB
C
171 lines
6.5 KiB
C
/**
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* Marlin 3D Printer Firmware
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*
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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* Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
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* Copyright (c) 2017 Victor Perez
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
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*/
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#ifndef _HAL_TIMERS_STM32F1_H
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#define _HAL_TIMERS_STM32F1_H
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include <stdint.h>
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// --------------------------------------------------------------------------
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// Defines
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// --------------------------------------------------------------------------
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/**
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* TODO: Check and confirm what timer we will use for each Temps and stepper driving.
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* We should probable drive temps with PWM.
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*/
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#define FORCE_INLINE __attribute__((always_inline)) inline
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typedef uint16_t hal_timer_t;
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#define HAL_TIMER_TYPE_MAX 0xFFFF
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#if defined MCU_STM32F103CB || defined(MCU_STM32F103C8)
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#define STEP_TIMER_NUM 4 // For C8/CB boards, use timer 4
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#else
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#define STEP_TIMER_NUM 5 // for other boards, five is fine.
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#endif
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#define STEP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
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#define TEMP_TIMER_NUM 2 // index of timer to use for temperature
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#define TEMP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
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#define CAT(a, ...) a ## __VA_ARGS__
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#define TIMER_DEV(num) CAT (&timer, num)
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#define STEP_TIMER_DEV TIMER_DEV(STEP_TIMER_NUM)
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#define TEMP_TIMER_DEV TIMER_DEV(TEMP_TIMER_NUM)
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//STM32_HAVE_TIMER(n);
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#define HAL_TIMER_RATE (F_CPU) // frequency of timers peripherals
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#define STEPPER_TIMER_PRESCALE 18 // prescaler for setting stepper timer, 4Mhz
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#define HAL_STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
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#define HAL_TICKS_PER_US ((HAL_STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per us
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#define PULSE_TIMER_NUM STEP_TIMER_NUM
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#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
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#define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
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#define TEMP_TIMER_FREQUENCY 100 // temperature interrupt frequency
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#define ENABLE_STEPPER_DRIVER_INTERRUPT() timer_enable_irq(STEP_TIMER_DEV, STEP_TIMER_CHAN)
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#define DISABLE_STEPPER_DRIVER_INTERRUPT() timer_disable_irq(STEP_TIMER_DEV, STEP_TIMER_CHAN)
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#define ENABLE_TEMPERATURE_INTERRUPT() timer_enable_irq(TEMP_TIMER_DEV, TEMP_TIMER_CHAN)
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#define DISABLE_TEMPERATURE_INTERRUPT() timer_disable_irq(TEMP_TIMER_DEV, TEMP_TIMER_CHAN)
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#define HAL_timer_get_current_count(timer_num) timer_get_count(TIMER_DEV(timer_num))
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#define HAL_timer_set_current_count(timer_num, count) timer_set_count(TIMER_DEV(timer_num, (uint16)count))
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#define HAL_ENABLE_ISRs() do { if (thermalManager.in_temp_isr)DISABLE_TEMPERATURE_INTERRUPT(); else ENABLE_TEMPERATURE_INTERRUPT(); ENABLE_STEPPER_DRIVER_INTERRUPT(); } while(0)
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// TODO change this
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#define HAL_TEMP_TIMER_ISR extern "C" void tempTC_Handler(void)
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#define HAL_STEP_TIMER_ISR extern "C" void stepTC_Handler(void)
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extern "C" void tempTC_Handler(void);
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extern "C" void stepTC_Handler(void);
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// --------------------------------------------------------------------------
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// Types
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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/*
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static HardwareTimer StepperTimer(STEP_TIMER_NUM);
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static HardwareTimer TempTimer(TEMP_TIMER_NUM);
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*/
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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void HAL_timer_start(uint8_t timer_num, uint32_t frequency);
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void HAL_timer_enable_interrupt(uint8_t timer_num);
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void HAL_timer_disable_interrupt(uint8_t timer_num);
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/**
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* NOTE: By default libmaple sets ARPE = 1, which means the Auto reload register is preloaded (will only update with an update event)
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* Thus we have to pause the timer, update the value, refresh, resume the timer.
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* That seems like a big waste of time and may be better to change the timer config to ARPE = 0, so ARR can be updated any time.
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* We are using a Channel in each timer in Capture/Compare mode. We could also instead use the Time Update Event Interrupt, but need to disable ARPE
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* so we can change the ARR value on the fly (without calling refresh), and not get an interrupt right there because we caused an UEV.
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* This mode pretty much makes 2 timers unusable for PWM since they have their counts updated all the time on ISRs.
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* The way Marlin manages timer interrupts doesn't make for an efficient usage in STM32F1
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* Todo: Look at that possibility later.
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*/
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FORCE_INLINE static void HAL_timer_set_count(const uint8_t timer_num, const hal_timer_t count) {
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//count = min(count, HAL_TIMER_TYPE_MAX);
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switch (timer_num) {
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case STEP_TIMER_NUM:
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timer_set_compare(STEP_TIMER_DEV, STEP_TIMER_CHAN, count);
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return;
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case TEMP_TIMER_NUM:
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timer_set_compare(TEMP_TIMER_DEV, TEMP_TIMER_CHAN, count);
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return;
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default:
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return;
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}
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}
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FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
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switch (timer_num) {
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case STEP_TIMER_NUM:
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return timer_get_compare(STEP_TIMER_DEV, STEP_TIMER_CHAN);
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case TEMP_TIMER_NUM:
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return timer_get_compare(TEMP_TIMER_DEV, TEMP_TIMER_CHAN);
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default:
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return 0;
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}
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}
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FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
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switch (timer_num) {
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case STEP_TIMER_NUM:
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timer_set_count(STEP_TIMER_DEV, 0);
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timer_generate_update(STEP_TIMER_DEV);
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return;
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case TEMP_TIMER_NUM:
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timer_set_count(TEMP_TIMER_DEV, 0);
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timer_generate_update(TEMP_TIMER_DEV);
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return;
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default:
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return;
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}
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}
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#endif // _HAL_TIMERS_STM32F1_H
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