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✨ ESP32 - Hardware PWM for fan, cutter, servos (#23802)

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This commit is contained in:
John Robertson
2022-03-18 03:21:53 +00:00
committed by Scott Lahteine
parent c7a2ecc31a
commit cc8e485e1c
6 changed files with 116 additions and 41 deletions
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25
Marlin/src/HAL/ESP32/HAL.h
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@@ -64,6 +64,12 @@
#define CRITICAL_SECTION_START() portENTER_CRITICAL(&spinlock)
#define CRITICAL_SECTION_END() portEXIT_CRITICAL(&spinlock)
#define HAL_CAN_SET_PWM_FREQ // This HAL supports PWM Frequency adjustment
#define PWM_FREQUENCY 1000u // Default PWM frequency when set_pwm_duty() is called without set_pwm_frequency()
#define PWM_RESOLUTION 10u // Default PWM bit resolution
#define CHANNEL_MAX_NUM 15u // max PWM channel # to allocate (7 to only use low speed, 15 to use low & high)
#define MAX_PWM_IOPIN 33u // hardware pwm pins < 34
// ------------------------
// Types
// ------------------------
@@ -83,7 +89,7 @@ typedef Servo hal_servo_t;
void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration=0);
void noTone(const pin_t _pin);
void analogWrite(pin_t pin, int value);
void analogWrite(const pin_t pin, const uint16_t value, const uint32_t freq=PWM_FREQUENCY, const uint16_t res=8);
//
// Pin Mapping for M42, M43, M226
@@ -209,12 +215,17 @@ public:
static uint16_t adc_value() { return adc_result; }
/**
* Set the PWM duty cycle for the pin to the given value.
* No inverting the duty cycle in this HAL.
* No changing the maximum size of the provided value to enable finer PWM duty control in this HAL.
* If not already allocated, allocate a hardware PWM channel
* to the pin and set the duty cycle..
* Optionally invert the duty cycle [default = false]
* Optionally change the scale of the provided value to enable finer PWM duty control [default = 255]
*/
static void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t=255, const bool=false) {
analogWrite(pin, v);
}
static void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
/**
* Allocate and set the frequency of a hardware PWM pin
* Returns -1 if no pin available.
*/
static int8_t set_pwm_frequency(const pin_t pin, const uint32_t f_desired);
};