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Apply fixes for DUE

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Alternative to #7882. If F_CPU is greater than 1000 it can be evenly divided by 8. Over 10000, 16; over 100000, 32; over 1 million, 64; etc.
This commit is contained in:
Scott Lahteine 2017-10-07 13:34:25 -05:00
parent 4b36a542e0
commit 8315a8a716
8 changed files with 20 additions and 21 deletions
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4
Marlin/src/HAL/HAL_AVR/HAL_AVR.h
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@ -102,10 +102,10 @@ extern "C" {
#define TEMP_TIMER_NUM 0
#define TEMP_TIMER_FREQUENCY (F_CPU / 64.0 / 256.0)
#define HAL_TIMER_RATE ((F_CPU) / 8.0)
#define HAL_TIMER_RATE ((F_CPU) / 8) // i.e., 2MHz or 2.5MHz
#define HAL_STEPPER_TIMER_RATE HAL_TIMER_RATE
#define STEPPER_TIMER_PRESCALE INT0_PRESCALER
#define HAL_TICKS_PER_US (((F_CPU) / 8) / 1000000) // Can not be of type double
#define HAL_TICKS_PER_US ((HAL_STEPPER_TIMER_RATE) / 1000000) // Cannot be of type double
#define ENABLE_STEPPER_DRIVER_INTERRUPT() SBI(TIMSK1, OCIE1A)
#define DISABLE_STEPPER_DRIVER_INTERRUPT() CBI(TIMSK1, OCIE1A)

2
Marlin/src/HAL/HAL_DUE/HAL_timers_Due.h
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@ -46,7 +46,7 @@
#define STEP_TIMER_NUM 3 // index of timer to use for stepper
#define TEMP_TIMER_NUM 4 // index of timer to use for temperature
#define HAL_TIMER_RATE ((F_CPU) / 2.0) // frequency of timers peripherals
#define HAL_TIMER_RATE ((F_CPU) / 2) // frequency of timers peripherals
#define STEPPER_TIMER_PRESCALE 1.0 // prescaler for setting stepper frequency
#define HAL_STEPPER_TIMER_RATE HAL_TIMER_RATE // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
#define HAL_TICKS_PER_US ((HAL_STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per us

8
Marlin/src/HAL/HAL_LPC1768/HAL_timers.cpp
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@ -33,22 +33,22 @@
void HAL_timer_init(void) {
SBI(LPC_SC->PCONP, 1); // power on timer0
LPC_TIM0->PR = ((HAL_TIMER_RATE / HAL_STEPPER_TIMER_RATE) - 1); // Use prescaler to set frequency if needed
LPC_TIM0->PR = (HAL_TIMER_RATE) / (HAL_STEPPER_TIMER_RATE) - 1; // Use prescaler to set frequency if needed
SBI(LPC_SC->PCONP, 2); // power on timer1
LPC_TIM1->PR = ((HAL_TIMER_RATE / 1000000) - 1);
LPC_TIM1->PR = (HAL_TIMER_RATE) / 1000000 - 1;
}
void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
switch (timer_num) {
case 0:
LPC_TIM0->MCR = 3; // Match on MR0, reset on MR0
LPC_TIM0->MR0 = (uint32_t)(HAL_STEPPER_TIMER_RATE / frequency); // Match value (period) to set frequency
LPC_TIM0->MR0 = uint32_t(HAL_STEPPER_TIMER_RATE) / frequency; // Match value (period) to set frequency
LPC_TIM0->TCR = _BV(0); // enable
break;
case 1:
LPC_TIM1->MCR = 3;
LPC_TIM1->MR0 = (uint32_t)(HAL_TEMP_TIMER_RATE / frequency);;
LPC_TIM1->MR0 = uint32_t(HAL_TEMP_TIMER_RATE) / frequency;
LPC_TIM1->TCR = _BV(0);
break;
default: break;

4
Marlin/src/HAL/HAL_STM32F1/HAL_timers_Stm32f1.cpp
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@ -100,7 +100,7 @@ void HAL_timer_start (uint8_t timer_num, uint32_t frequency) {
StepperTimer.setCount(0);
StepperTimer.setPrescaleFactor(STEPPER_TIMER_PRESCALE);
StepperTimer.setOverflow(0xFFFF);
StepperTimer.setCompare (STEP_TIMER_CHAN, (HAL_STEPPER_TIMER_RATE / frequency));
StepperTimer.setCompare(STEP_TIMER_CHAN, uint32_t(HAL_STEPPER_TIMER_RATE) / frequency);
StepperTimer.refresh();
StepperTimer.resume();
break;
@ -109,7 +109,7 @@ void HAL_timer_start (uint8_t timer_num, uint32_t frequency) {
TempTimer.setCount(0);
TempTimer.setPrescaleFactor(TEMP_TIMER_PRESCALE);
TempTimer.setOverflow(0xFFFF);
TempTimer.setCompare (TEMP_TIMER_CHAN, ((F_CPU / TEMP_TIMER_PRESCALE) / frequency));
TempTimer.setCompare(TEMP_TIMER_CHAN, (F_CPU) / (TEMP_TIMER_PRESCALE) / frequency);
TempTimer.refresh();
TempTimer.resume();
break;

2
Marlin/src/HAL/HAL_TEENSY35_36/HAL_timers_Teensy.h
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@ -59,7 +59,7 @@
#define HAL_TIMER_RATE (FTM0_TIMER_RATE)
#define HAL_STEPPER_TIMER_RATE HAL_TIMER_RATE
#define HAL_TICKS_PER_US (HAL_STEPPER_TIMER_RATE/1000000)
#define HAL_TICKS_PER_US ((HAL_STEPPER_TIMER_RATE) / 1000000)
#define TEMP_TIMER_FREQUENCY 1000

2
Marlin/src/inc/Conditionals_post.h
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@ -207,7 +207,7 @@
/**
* Hidden options for developer
*/
// Double stepping start from STEP_DOUBLER_FREQUENCY + 1, quad stepping start from STEP_DOUBLER_FREQUENCY * 2 + 1
// Double stepping starts at STEP_DOUBLER_FREQUENCY + 1, quad stepping starts at STEP_DOUBLER_FREQUENCY * 2 + 1
#ifndef STEP_DOUBLER_FREQUENCY
#if ENABLED(ADVANCE) || ENABLED(LIN_ADVANCE)
#define STEP_DOUBLER_FREQUENCY 60000 // Hz

7
Marlin/src/module/stepper.h
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@ -303,10 +303,9 @@ class Stepper {
#ifdef CPU_32_BIT
// In case of high-performance processor, it is able to calculate in real-time
timer = (uint32_t)(HAL_STEPPER_TIMER_RATE) / step_rate;
if (timer < (HAL_STEPPER_TIMER_RATE / (STEP_DOUBLER_FREQUENCY * 2))) { // (STEP_DOUBLER_FREQUENCY * 2 kHz - this should never happen)
timer = (HAL_STEPPER_TIMER_RATE / (STEP_DOUBLER_FREQUENCY * 2));
}
constexpr uint32_t MIN_TIME_PER_STEP = (HAL_STEPPER_TIMER_RATE) / ((STEP_DOUBLER_FREQUENCY) * 2);
timer = uint32_t(HAL_STEPPER_TIMER_RATE) / step_rate;
NOLESS(timer, MIN_TIME_PER_STEP); // (STEP_DOUBLER_FREQUENCY * 2 kHz - this should never happen)
#else
NOLESS(step_rate, F_CPU / 500000);
step_rate -= F_CPU / 500000; // Correct for minimal speed