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Fix stepper pulse timing

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Always honor minimum period on stepper pulse generation, and fix timing calculations

Signed-off-by: etagle <ejtagle@hotmail.com>
This commit is contained in:
etagle
2018-06-12 01:04:26 -03:00
committed by Scott Lahteine
parent 0d79128c8d
commit a215725df6
8 changed files with 116 additions and 107 deletions
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37
Marlin/src/HAL/HAL_STM32F1/HAL_timers_Stm32f1.h
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@ -47,37 +47,34 @@
typedef uint16_t hal_timer_t;
#define HAL_TIMER_TYPE_MAX 0xFFFF
#define HAL_TIMER_RATE (F_CPU) // frequency of timers peripherals
#define STEP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
#define TEMP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
#if defined(MCU_STM32F103CB) || defined(MCU_STM32F103C8)
#define STEP_TIMER_NUM 4 // For C8/CB boards, use timer 4
#else
#define STEP_TIMER_NUM 5 // for other boards, five is fine.
#endif
#define STEP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
#define TEMP_TIMER_NUM 2 // index of timer to use for temperature
#define TEMP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
#define PULSE_TIMER_NUM STEP_TIMER_NUM
timer_dev* get_timer_dev(int number);
#define TIMER_DEV(num) get_timer_dev(num)
#define STEP_TIMER_DEV TIMER_DEV(STEP_TIMER_NUM)
#define TEMP_TIMER_DEV TIMER_DEV(TEMP_TIMER_NUM)
//STM32_HAVE_TIMER(n);
#define HAL_TIMER_RATE (F_CPU) // frequency of timers peripherals
#define STEPPER_TIMER_PRESCALE 18 // prescaler for setting stepper timer, 4Mhz
#define STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer
#define HAL_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
#define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
#define STEP_TIMER_MIN_INTERVAL 8 // minimum time in µs between stepper interrupts
#define STEPPER_TIMER_PRESCALE 18 // prescaler for setting stepper timer, 4Mhz
#define STEPPER_TIMER_RATE (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE) // frequency of stepper timer
#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
#define PULSE_TIMER_RATE STEPPER_TIMER_RATE // frequency of pulse timer
#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
timer_dev* get_timer_dev(int number);
#define TIMER_DEV(num) get_timer_dev(num)
#define STEP_TIMER_DEV TIMER_DEV(STEP_TIMER_NUM)
#define TEMP_TIMER_DEV TIMER_DEV(TEMP_TIMER_NUM)
#define ENABLE_STEPPER_DRIVER_INTERRUPT() timer_enable_irq(STEP_TIMER_DEV, STEP_TIMER_CHAN)
#define DISABLE_STEPPER_DRIVER_INTERRUPT() timer_disable_irq(STEP_TIMER_DEV, STEP_TIMER_CHAN)