bissen21/Marlin_Firmware
1
0
Fork 0
Code Issues Pull Requests Projects Releases 4 Wiki Activity

⚗️ Use pwm_set_duty over analogWrite to set PWM (#23048)

Browse Source 
Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
This commit is contained in:
Andrei M
2021-11-02 01:47:16 -04:00
committed by Scott Lahteine
parent b033da1782
commit 0d91b07797
26 changed files with 159 additions and 126 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
Marlin/src/HAL/STM32/fast_pwm.cpp
View File

@ -24,26 +24,9 @@
#ifdef HAL_STM32
#include "../../inc/MarlinConfigPre.h"
#if NEEDS_HARDWARE_PWM
#include "HAL.h"
#include "../../inc/MarlinConfig.h"
#include "timers.h"
void set_pwm_frequency(const pin_t pin, int f_desired) {
if (!PWM_PIN(pin)) return; // Don't proceed if no hardware timer
PinName pin_name = digitalPinToPinName(pin);
TIM_TypeDef *Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM); // Get HAL timer instance
LOOP_S_L_N(i, 0, NUM_HARDWARE_TIMERS) // Protect used timers
if (timer_instance[i] && timer_instance[i]->getHandle()->Instance == Instance)
return;
pwm_start(pin_name, f_desired, 0, RESOLUTION_8B_COMPARE_FORMAT);
}
void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
PinName pin_name = digitalPinToPinName(pin);
TIM_TypeDef *Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM);
@ -58,5 +41,21 @@ void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255
}
}
#endif // NEEDS_HARDWARE_PWM
#if NEEDS_HARDWARE_PWM
void set_pwm_frequency(const pin_t pin, int f_desired) {
if (!PWM_PIN(pin)) return; // Don't proceed if no hardware timer
PinName pin_name = digitalPinToPinName(pin);
TIM_TypeDef *Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM); // Get HAL timer instance
LOOP_S_L_N(i, 0, NUM_HARDWARE_TIMERS) // Protect used timers
if (timer_instance[i] && timer_instance[i]->getHandle()->Instance == Instance)
return;
pwm_start(pin_name, f_desired, 0, RESOLUTION_8B_COMPARE_FORMAT);
}
#endif
#endif // HAL_STM32