Add rotary knob volume control
This commit is contained in:
parent
e1fb103db9
commit
3b3e4d9f34
3 changed files with 285 additions and 9 deletions
39
main.py
39
main.py
|
|
@ -10,6 +10,7 @@ from umqtt.simple import MQTTClient
|
|||
|
||||
import ssd1306
|
||||
import mcp4
|
||||
from rotary_irq_esp import RotaryIRQ
|
||||
from statetree import StateTree
|
||||
|
||||
VOLUME_MAX = const(128)
|
||||
|
|
@ -29,12 +30,24 @@ state = StateTree(
|
|||
)
|
||||
last_update = 0
|
||||
|
||||
i2c = SoftI2C(sda=Pin(2), scl=Pin(16))
|
||||
rotary = RotaryIRQ(
|
||||
33,
|
||||
32,
|
||||
0,
|
||||
max_val=128,
|
||||
range_mode=RotaryIRQ.RANGE_BOUNDED,
|
||||
pull_up=True,
|
||||
)
|
||||
rotary_value = rotary.value()
|
||||
|
||||
try:
|
||||
i2c = SoftI2C(sda=Pin(21), scl=Pin(22))
|
||||
oled_width = const(128)
|
||||
oled_height = const(32)
|
||||
oled = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c)
|
||||
buf = bytearray((oled_height // 8) * oled_width)
|
||||
fbuf = framebuf.FrameBuffer1(buf, oled_width, oled_height)
|
||||
except Exception as e:
|
||||
print("WARNING: OLED unavailable:", e)
|
||||
oled = None
|
||||
|
||||
sta_if = network.WLAN(network.STA_IF)
|
||||
|
||||
|
|
@ -65,11 +78,25 @@ def on_message(topic, msg):
|
|||
|
||||
|
||||
def loop():
|
||||
global mqtt, state, last_update
|
||||
global mqtt, state, last_update, rotary, rotary_value
|
||||
|
||||
state["volume"]["left"] = pot.read(0)
|
||||
state["volume"]["right"] = pot.read(1)
|
||||
|
||||
if state.changed:
|
||||
# Volume changed externally
|
||||
rotary.set(value=max(state["volume"]["left"], state["volume"]["right"]))
|
||||
rotary_value = rotary.value()
|
||||
|
||||
new_value = rotary.value()
|
||||
if rotary_value != new_value:
|
||||
print("Rotary:", new_value)
|
||||
state["volume"]["left"] = new_value
|
||||
state["volume"]["right"] = new_value
|
||||
pot.write(0, new_value)
|
||||
pot.write(1, new_value)
|
||||
rotary_value = new_value
|
||||
|
||||
if not sta_if.active():
|
||||
print("Connecting to WiFi")
|
||||
sta_if.active(True)
|
||||
|
|
@ -170,7 +197,7 @@ def loop():
|
|||
mqtt.publish(topic, payload, retain=True)
|
||||
last_update = utime.time()
|
||||
mqtt.check_msg()
|
||||
if state.changed:
|
||||
if oled and state.changed:
|
||||
oled.fill(0)
|
||||
oled.framebuf.rect(10, 0, 92, 8, 1)
|
||||
oled.framebuf.rect(
|
||||
|
|
@ -191,4 +218,4 @@ def loop():
|
|||
|
||||
while True:
|
||||
loop()
|
||||
utime.sleep(1)
|
||||
utime.sleep(0.1)
|
||||
|
|
|
|||
173
rotary.py
Normal file
173
rotary.py
Normal file
|
|
@ -0,0 +1,173 @@
|
|||
# MIT License (MIT)
|
||||
# Copyright (c) 2022 Mike Teachman
|
||||
# https://opensource.org/licenses/MIT
|
||||
|
||||
# Platform-independent MicroPython code for the rotary encoder module
|
||||
|
||||
# Documentation:
|
||||
# https://github.com/MikeTeachman/micropython-rotary
|
||||
|
||||
import micropython
|
||||
|
||||
_DIR_CW = const(0x10) # Clockwise step
|
||||
_DIR_CCW = const(0x20) # Counter-clockwise step
|
||||
|
||||
# Rotary Encoder States
|
||||
_R_START = const(0x0)
|
||||
_R_CW_1 = const(0x1)
|
||||
_R_CW_2 = const(0x2)
|
||||
_R_CW_3 = const(0x3)
|
||||
_R_CCW_1 = const(0x4)
|
||||
_R_CCW_2 = const(0x5)
|
||||
_R_CCW_3 = const(0x6)
|
||||
_R_ILLEGAL = const(0x7)
|
||||
|
||||
_transition_table = [
|
||||
|
||||
# |------------- NEXT STATE -------------| |CURRENT STATE|
|
||||
# CLK/DT CLK/DT CLK/DT CLK/DT
|
||||
# 00 01 10 11
|
||||
[_R_START, _R_CCW_1, _R_CW_1, _R_START], # _R_START
|
||||
[_R_CW_2, _R_START, _R_CW_1, _R_START], # _R_CW_1
|
||||
[_R_CW_2, _R_CW_3, _R_CW_1, _R_START], # _R_CW_2
|
||||
[_R_CW_2, _R_CW_3, _R_START, _R_START | _DIR_CW], # _R_CW_3
|
||||
[_R_CCW_2, _R_CCW_1, _R_START, _R_START], # _R_CCW_1
|
||||
[_R_CCW_2, _R_CCW_1, _R_CCW_3, _R_START], # _R_CCW_2
|
||||
[_R_CCW_2, _R_START, _R_CCW_3, _R_START | _DIR_CCW], # _R_CCW_3
|
||||
[_R_START, _R_START, _R_START, _R_START]] # _R_ILLEGAL
|
||||
|
||||
_transition_table_half_step = [
|
||||
[_R_CW_3, _R_CW_2, _R_CW_1, _R_START],
|
||||
[_R_CW_3 | _DIR_CCW, _R_START, _R_CW_1, _R_START],
|
||||
[_R_CW_3 | _DIR_CW, _R_CW_2, _R_START, _R_START],
|
||||
[_R_CW_3, _R_CCW_2, _R_CCW_1, _R_START],
|
||||
[_R_CW_3, _R_CW_2, _R_CCW_1, _R_START | _DIR_CW],
|
||||
[_R_CW_3, _R_CCW_2, _R_CW_3, _R_START | _DIR_CCW],
|
||||
[_R_START, _R_START, _R_START, _R_START],
|
||||
[_R_START, _R_START, _R_START, _R_START]]
|
||||
|
||||
_STATE_MASK = const(0x07)
|
||||
_DIR_MASK = const(0x30)
|
||||
|
||||
|
||||
def _wrap(value, incr, lower_bound, upper_bound):
|
||||
range = upper_bound - lower_bound + 1
|
||||
value = value + incr
|
||||
|
||||
if value < lower_bound:
|
||||
value += range * ((lower_bound - value) // range + 1)
|
||||
|
||||
return lower_bound + (value - lower_bound) % range
|
||||
|
||||
|
||||
def _bound(value, incr, lower_bound, upper_bound):
|
||||
return min(upper_bound, max(lower_bound, value + incr))
|
||||
|
||||
|
||||
def _trigger(rotary_instance):
|
||||
for listener in rotary_instance._listener:
|
||||
listener()
|
||||
|
||||
|
||||
class Rotary(object):
|
||||
|
||||
RANGE_UNBOUNDED = const(1)
|
||||
RANGE_WRAP = const(2)
|
||||
RANGE_BOUNDED = const(3)
|
||||
|
||||
def __init__(self, min_val, max_val, incr, reverse, range_mode, half_step, invert):
|
||||
self._min_val = min_val
|
||||
self._max_val = max_val
|
||||
self._incr = incr
|
||||
self._reverse = -1 if reverse else 1
|
||||
self._range_mode = range_mode
|
||||
self._value = min_val
|
||||
self._state = _R_START
|
||||
self._half_step = half_step
|
||||
self._invert = invert
|
||||
self._listener = []
|
||||
|
||||
def set(self, value=None, min_val=None, incr=None,
|
||||
max_val=None, reverse=None, range_mode=None):
|
||||
# disable DT and CLK pin interrupts
|
||||
self._hal_disable_irq()
|
||||
|
||||
if value is not None:
|
||||
self._value = value
|
||||
if min_val is not None:
|
||||
self._min_val = min_val
|
||||
if max_val is not None:
|
||||
self._max_val = max_val
|
||||
if incr is not None:
|
||||
self._incr = incr
|
||||
if reverse is not None:
|
||||
self._reverse = -1 if reverse else 1
|
||||
if range_mode is not None:
|
||||
self._range_mode = range_mode
|
||||
self._state = _R_START
|
||||
|
||||
# enable DT and CLK pin interrupts
|
||||
self._hal_enable_irq()
|
||||
|
||||
def value(self):
|
||||
return self._value
|
||||
|
||||
def reset(self):
|
||||
self._value = 0
|
||||
|
||||
def close(self):
|
||||
self._hal_close()
|
||||
|
||||
def add_listener(self, l):
|
||||
self._listener.append(l)
|
||||
|
||||
def remove_listener(self, l):
|
||||
if l not in self._listener:
|
||||
raise ValueError('{} is not an installed listener'.format(l))
|
||||
self._listener.remove(l)
|
||||
|
||||
def _process_rotary_pins(self, pin):
|
||||
old_value = self._value
|
||||
clk_dt_pins = (self._hal_get_clk_value() <<
|
||||
1) | self._hal_get_dt_value()
|
||||
|
||||
if self._invert:
|
||||
clk_dt_pins = ~clk_dt_pins & 0x03
|
||||
|
||||
# Determine next state
|
||||
if self._half_step:
|
||||
self._state = _transition_table_half_step[self._state &
|
||||
_STATE_MASK][clk_dt_pins]
|
||||
else:
|
||||
self._state = _transition_table[self._state &
|
||||
_STATE_MASK][clk_dt_pins]
|
||||
direction = self._state & _DIR_MASK
|
||||
|
||||
incr = 0
|
||||
if direction == _DIR_CW:
|
||||
incr = self._incr
|
||||
elif direction == _DIR_CCW:
|
||||
incr = -self._incr
|
||||
|
||||
incr *= self._reverse
|
||||
|
||||
if self._range_mode == self.RANGE_WRAP:
|
||||
self._value = _wrap(
|
||||
self._value,
|
||||
incr,
|
||||
self._min_val,
|
||||
self._max_val)
|
||||
elif self._range_mode == self.RANGE_BOUNDED:
|
||||
self._value = _bound(
|
||||
self._value,
|
||||
incr,
|
||||
self._min_val,
|
||||
self._max_val)
|
||||
else:
|
||||
self._value = self._value + incr
|
||||
|
||||
try:
|
||||
if old_value != self._value and len(self._listener) != 0:
|
||||
_trigger(self)
|
||||
except:
|
||||
pass
|
||||
76
rotary_irq_esp.py
Normal file
76
rotary_irq_esp.py
Normal file
|
|
@ -0,0 +1,76 @@
|
|||
# MIT License (MIT)
|
||||
# Copyright (c) 2020 Mike Teachman
|
||||
# https://opensource.org/licenses/MIT
|
||||
|
||||
# Platform-specific MicroPython code for the rotary encoder module
|
||||
# ESP8266/ESP32 implementation
|
||||
|
||||
# Documentation:
|
||||
# https://github.com/MikeTeachman/micropython-rotary
|
||||
|
||||
from machine import Pin
|
||||
from rotary import Rotary
|
||||
from sys import platform
|
||||
|
||||
_esp8266_deny_pins = [16]
|
||||
|
||||
|
||||
class RotaryIRQ(Rotary):
|
||||
|
||||
def __init__(self, pin_num_clk, pin_num_dt, min_val=0, max_val=10, incr=1,
|
||||
reverse=False, range_mode=Rotary.RANGE_UNBOUNDED, pull_up=False, half_step=False, invert=False):
|
||||
|
||||
if platform == 'esp8266':
|
||||
if pin_num_clk in _esp8266_deny_pins:
|
||||
raise ValueError(
|
||||
'%s: Pin %d not allowed. Not Available for Interrupt: %s' %
|
||||
(platform, pin_num_clk, _esp8266_deny_pins))
|
||||
if pin_num_dt in _esp8266_deny_pins:
|
||||
raise ValueError(
|
||||
'%s: Pin %d not allowed. Not Available for Interrupt: %s' %
|
||||
(platform, pin_num_dt, _esp8266_deny_pins))
|
||||
|
||||
super().__init__(min_val, max_val, incr, reverse, range_mode, half_step, invert)
|
||||
|
||||
if pull_up == True:
|
||||
self._pin_clk = Pin(pin_num_clk, Pin.IN, Pin.PULL_UP)
|
||||
self._pin_dt = Pin(pin_num_dt, Pin.IN, Pin.PULL_UP)
|
||||
else:
|
||||
self._pin_clk = Pin(pin_num_clk, Pin.IN)
|
||||
self._pin_dt = Pin(pin_num_dt, Pin.IN)
|
||||
|
||||
self._enable_clk_irq(self._process_rotary_pins)
|
||||
self._enable_dt_irq(self._process_rotary_pins)
|
||||
|
||||
def _enable_clk_irq(self, callback=None):
|
||||
self._pin_clk.irq(
|
||||
trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING,
|
||||
handler=callback)
|
||||
|
||||
def _enable_dt_irq(self, callback=None):
|
||||
self._pin_dt.irq(
|
||||
trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING,
|
||||
handler=callback)
|
||||
|
||||
def _disable_clk_irq(self):
|
||||
self._pin_clk.irq(handler=None)
|
||||
|
||||
def _disable_dt_irq(self):
|
||||
self._pin_dt.irq(handler=None)
|
||||
|
||||
def _hal_get_clk_value(self):
|
||||
return self._pin_clk.value()
|
||||
|
||||
def _hal_get_dt_value(self):
|
||||
return self._pin_dt.value()
|
||||
|
||||
def _hal_enable_irq(self):
|
||||
self._enable_clk_irq(self._process_rotary_pins)
|
||||
self._enable_dt_irq(self._process_rotary_pins)
|
||||
|
||||
def _hal_disable_irq(self):
|
||||
self._disable_clk_irq()
|
||||
self._disable_dt_irq()
|
||||
|
||||
def _hal_close(self):
|
||||
self._hal_disable_irq()
|
||||
Loading…
Reference in a new issue