mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-12-23 12:51:24 +01:00
118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
/*
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* © 2022 Paul M Antoine
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* © 2021 Mike S
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* © 2021 Harald Barth
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* © 2021 Fred Decker
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* © 2021 Chris Harlow
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* © 2021 David Cutting
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* All rights reserved.
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*
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* This file is part of Asbelos DCC API
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*
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* This 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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* It 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 CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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// ATTENTION: this file only compiles on a STM32 based boards
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// Please refer to DCCTimer.h for general comments about how this class works
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// This is to avoid repetition and duplication.
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#ifdef ARDUINO_ARCH_STM32
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#include "FSH.h" //PMA temp debug
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#include "DIAG.h" //PMA temp debug
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#include "DCCTimer.h"
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// STM32 doesn't have Serial1 defined by default
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HardwareSerial Serial1(PA10, PA15); // Rx=PA10, Tx=PA9
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INTERRUPT_CALLBACK interruptHandler=0;
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// Let's use STM32's timer #1 until disabused of this notion
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HardwareTimer timer(TIM1);
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// Timer IRQ handler
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void Timer1_Handler() {
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interruptHandler();
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}
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void DCCTimer::begin(INTERRUPT_CALLBACK callback) {
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interruptHandler=callback;
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noInterrupts();
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timer.pause();
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timer.setPrescaleFactor(1);
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// timer.setOverflow(CLOCK_CYCLES * 2);
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timer.setOverflow(DCC_SIGNAL_TIME, MICROSEC_FORMAT);
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timer.attachInterrupt(Timer1_Handler);
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timer.refresh();
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timer.resume();
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interrupts();
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}
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bool DCCTimer::isPWMPin(byte pin) {
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//TODO: SAMD whilst this call to digitalPinHasPWM will reveal which pins can do PWM,
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// there's no support yet for High Accuracy, so for now return false
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// return digitalPinHasPWM(pin);
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return false;
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}
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void DCCTimer::setPWM(byte pin, bool high) {
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// TODO: High Accuracy mode is not supported as yet, and may never need to be
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(void) pin;
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(void) high;
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}
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void DCCTimer::clearPWM() {
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return;
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}
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void DCCTimer::getSimulatedMacAddress(byte mac[6]) {
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volatile uint32_t *serno1 = (volatile uint32_t *)0x0080A00C;
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volatile uint32_t *serno2 = (volatile uint32_t *)0x0080A040;
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// volatile uint32_t *serno3 = (volatile uint32_t *)0x0080A044;
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// volatile uint32_t *serno4 = (volatile uint32_t *)0x0080A048;
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volatile uint32_t m1 = *serno1;
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volatile uint32_t m2 = *serno2;
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mac[0] = m1 >> 8;
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mac[1] = m1 >> 0;
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mac[2] = m2 >> 24;
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mac[3] = m2 >> 16;
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mac[4] = m2 >> 8;
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mac[5] = m2 >> 0;
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}
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volatile int DCCTimer::minimum_free_memory=__INT_MAX__;
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// Return low memory value...
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int DCCTimer::getMinimumFreeMemory() {
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noInterrupts(); // Disable interrupts to get volatile value
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int retval = freeMemory();
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interrupts();
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return retval;
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}
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extern "C" char* sbrk(int incr);
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int DCCTimer::freeMemory() {
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char top;
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return (int)(&top - reinterpret_cast<char *>(sbrk(0)));
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}
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void DCCTimer::reset() {
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__disable_irq();
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NVIC_SystemReset();
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while(true) {};
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}
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#endif |