632d8efa05
PWM implementation uses a timer and interrupts (FRC1), taken from
Espressif's/NodeMCU's implementation and adapted for our use.
8 channels are supported, on pins 0, 2, 4, 5, 12, 13, 14, 15.
Usage:
import machine
pwm0 = machine.PWM(machine.Pin(0))
pwm0.freq(1000)
pwm0.duty(500)
Frequency is shared (ie the same) for all channels. Frequency is
between 1 and 1000. Duty is between 0 and 1023.
20 lines
554 B
C
20 lines
554 B
C
extern const mp_obj_type_t pyb_pin_type;
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extern const mp_obj_type_t pyb_pwm_type;
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extern const mp_obj_type_t pyb_adc_type;
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extern const mp_obj_type_t pyb_rtc_type;
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extern const mp_obj_type_t pyb_i2c_type;
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extern const mp_obj_type_t pyb_spi_type;
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typedef struct _pyb_pin_obj_t {
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mp_obj_base_t base;
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uint16_t pin_id;
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uint16_t phys_port;
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uint32_t periph;
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uint16_t func;
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} pyb_pin_obj_t;
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uint mp_obj_get_pin(mp_obj_t pin_in);
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pyb_pin_obj_t *mp_obj_get_pin_obj(mp_obj_t pin_in);
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int pin_get(uint pin);
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void pin_set(uint pin, int value);
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