166 lines
6 KiB
C++
166 lines
6 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) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
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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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#ifdef __STM32F1__
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include "../HAL.h"
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#include "HAL_timers_Stm32f1.h"
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// --------------------------------------------------------------------------
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// Externals
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Local defines
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// --------------------------------------------------------------------------
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#define NUM_HARDWARE_TIMERS 4
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//#define PRESCALER 1
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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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// Private Variables
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// --------------------------------------------------------------------------
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/* VGPV
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const tTimerConfig TimerConfig [NUM_HARDWARE_TIMERS] = {
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{ TC0, 0, TC0_IRQn, 0}, // 0 - [servo timer5]
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{ TC0, 1, TC1_IRQn, 0}, // 1
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{ TC0, 2, TC2_IRQn, 0}, // 2
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{ TC1, 0, TC3_IRQn, 2}, // 3 - stepper
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{ TC1, 1, TC4_IRQn, 15}, // 4 - temperature
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{ TC1, 2, TC5_IRQn, 0}, // 5 - [servo timer3]
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{ TC2, 0, TC6_IRQn, 0}, // 6
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{ TC2, 1, TC7_IRQn, 0}, // 7
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{ TC2, 2, TC8_IRQn, 0}, // 8
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};
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*/
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// --------------------------------------------------------------------------
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// Function prototypes
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Private functions
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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/**
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* Timer_clock1: Prescaler 2 -> 36 MHz
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* Timer_clock2: Prescaler 8 -> 9 MHz
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* Timer_clock3: Prescaler 32 -> 2.25 MHz
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* Timer_clock4: Prescaler 128 -> 562.5 kHz
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*/
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/**
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* TODO: Calculate Timer prescale value, so we get the 32bit to adjust
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*/
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void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
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nvic_irq_num irq_num;
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switch (timer_num) {
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case 1: irq_num = NVIC_TIMER1_CC; break;
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case 2: irq_num = NVIC_TIMER2; break;
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case 3: irq_num = NVIC_TIMER3; break;
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case 4: irq_num = NVIC_TIMER4; break;
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case 5: irq_num = NVIC_TIMER5; break;
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default:
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/**
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* We should not get here, add Sanitycheck for timer number. Should be a general timer
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* since basic timers do not have CC channels.
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* Advanced timers should be skipped if possible too, and are not listed above.
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*/
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break;
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}
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nvic_irq_set_priority(irq_num, 0xF); // this is the lowest settable priority, but should still be over USB
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switch (timer_num) {
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case STEP_TIMER_NUM:
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timer_pause(STEP_TIMER_DEV);
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timer_set_count(STEP_TIMER_DEV, 0);
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timer_set_prescaler(STEP_TIMER_DEV, (uint16)(STEPPER_TIMER_PRESCALE - 1));
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timer_set_reload(STEP_TIMER_DEV, 0xFFFF);
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timer_set_compare(STEP_TIMER_DEV, STEP_TIMER_CHAN, min(HAL_TIMER_TYPE_MAX, (HAL_STEPPER_TIMER_RATE / frequency)));
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timer_attach_interrupt(STEP_TIMER_DEV, STEP_TIMER_CHAN, stepTC_Handler);
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timer_generate_update(STEP_TIMER_DEV);
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timer_resume(STEP_TIMER_DEV);
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break;
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case TEMP_TIMER_NUM:
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timer_pause(TEMP_TIMER_DEV);
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timer_set_count(TEMP_TIMER_DEV, 0);
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timer_set_prescaler(TEMP_TIMER_DEV, (uint16)(TEMP_TIMER_PRESCALE - 1));
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timer_set_reload(TEMP_TIMER_DEV, 0xFFFF);
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timer_set_compare(TEMP_TIMER_DEV, TEMP_TIMER_CHAN, min(HAL_TIMER_TYPE_MAX, ((F_CPU / TEMP_TIMER_PRESCALE) / frequency)));
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timer_attach_interrupt(TEMP_TIMER_DEV, TEMP_TIMER_CHAN, tempTC_Handler);
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timer_generate_update(TEMP_TIMER_DEV);
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timer_resume(TEMP_TIMER_DEV);
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break;
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}
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}
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void HAL_timer_enable_interrupt(const uint8_t timer_num) {
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switch (timer_num) {
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case STEP_TIMER_NUM: ENABLE_STEPPER_DRIVER_INTERRUPT(); break;
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case TEMP_TIMER_NUM: ENABLE_TEMPERATURE_INTERRUPT(); break;
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default: break;
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}
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}
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void HAL_timer_disable_interrupt(const uint8_t timer_num) {
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switch (timer_num) {
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case STEP_TIMER_NUM: DISABLE_STEPPER_DRIVER_INTERRUPT(); break;
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case TEMP_TIMER_NUM: DISABLE_TEMPERATURE_INTERRUPT(); break;
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default: break;
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}
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}
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static inline bool timer_irq_enabled(const timer_dev * const dev, const uint8 interrupt) {
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return bool(*bb_perip(&(dev->regs).adv->DIER, interrupt));
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}
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bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
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switch (timer_num) {
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case STEP_TIMER_NUM: return timer_irq_enabled(STEP_TIMER_DEV, STEP_TIMER_CHAN);
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case TEMP_TIMER_NUM: return timer_irq_enabled(TEMP_TIMER_DEV, TEMP_TIMER_CHAN);
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}
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return false;
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}
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#endif // __STM32F1__
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