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nrf: switch to shared softencoder implementation

This commit is contained in:
Jeff Epler 2021-04-08 16:36:10 -05:00
parent 3aec1032f7
commit d69ca4a8ae
3 changed files with 5 additions and 30 deletions
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30
ports/nrf/common-hal/rotaryio/IncrementalEncoder.c
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@ -25,6 +25,7 @@
*/
#include "common-hal/rotaryio/IncrementalEncoder.h"
#include "shared-module/rotaryio/IncrementalEncoder.h"
#include "nrfx_gpiote.h"
#include "py/runtime.h"
@ -44,25 +45,7 @@ static void _intr_handler(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action) {
uint8_t new_state = nrf_gpio_pin_read(self->pin_a);
new_state = (new_state << 1) + (new_state ^ nrf_gpio_pin_read(self->pin_b));
uint8_t change = (new_state - self->state) & 0x03;
if (change == 1) {
self->quarter++;
} else if (change == 3) {
self->quarter--;
}
// ignore other state transitions
self->state = new_state;
// logic from the atmel-samd port: provides some damping and scales movement
// down by 4:1.
if (self->quarter >= 4) {
self->position++;
self->quarter = 0;
} else if (self->quarter <= -4) {
self->position--;
self->quarter = 0;
}
shared_module_softencoder_state_update(self, new_state);
}
void common_hal_rotaryio_incrementalencoder_construct(rotaryio_incrementalencoder_obj_t *self,
@ -110,12 +93,3 @@ void common_hal_rotaryio_incrementalencoder_deinit(rotaryio_incrementalencoder_o
self->pin_a = NO_PIN;
self->pin_b = NO_PIN;
}
mp_int_t common_hal_rotaryio_incrementalencoder_get_position(rotaryio_incrementalencoder_obj_t *self) {
return self->position;
}
void common_hal_rotaryio_incrementalencoder_set_position(rotaryio_incrementalencoder_obj_t *self,
mp_int_t new_position) {
self->position = new_position;
}

4
ports/nrf/common-hal/rotaryio/IncrementalEncoder.h
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@ -35,8 +35,8 @@ typedef struct {
mp_obj_base_t base;
uint8_t pin_a;
uint8_t pin_b;
uint8_t state;
int8_t quarter;
int8_t quarter_count : 4;
uint8_t state : 4;
mp_int_t position;
} rotaryio_incrementalencoder_obj_t;

1
ports/nrf/mpconfigport.mk
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@ -40,6 +40,7 @@ CIRCUITPY_RTC ?= 1
CIRCUITPY_FREQUENCYIO = 0
CIRCUITPY_RGBMATRIX ?= 1
CIRCUITPY_ROTARYIO_SOFTENCODER = 1
CIRCUITPY_FRAMEBUFFERIO ?= 1
CIRCUITPY_COUNTIO = 0