141 lines
No EOL
3.4 KiB
Python
141 lines
No EOL
3.4 KiB
Python
from machine import Pin, I2C
|
|
from onewire import OneWire
|
|
from ds18x20 import DS18X20
|
|
from time import sleep_ms, ticks_ms, ticks_diff
|
|
from lcd_api import LcdApi
|
|
from pico_i2c_lcd import I2cLcd
|
|
|
|
# Version
|
|
VERSION = "1.0.0"
|
|
|
|
# Relais
|
|
relais = Pin(18, machine.Pin.OUT, value = 1)
|
|
#led_onboard = Pin(25, machine.Pin.OUT, value = 0)
|
|
|
|
# Temperature
|
|
temp_sensor = DS18X20(OneWire(Pin(28)))
|
|
sensor_id = temp_sensor.scan()[0]
|
|
|
|
# LCD Display
|
|
i2c = I2C(1, sda=Pin(26), scl=Pin(27), freq=400000)
|
|
I2C_ADDR = 0x27
|
|
I2C_NUM_ROWS = 2
|
|
I2C_NUM_COLS = 16
|
|
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)
|
|
|
|
# Custom characters
|
|
degree = (
|
|
0b00111,
|
|
0b00101,
|
|
0b00111,
|
|
0b00000,
|
|
0b00000,
|
|
0b00000,
|
|
0b00000,
|
|
0b00000,
|
|
)
|
|
umlaut_a = (
|
|
0b01010,
|
|
0b00000,
|
|
0b01110,
|
|
0b00001,
|
|
0b01111,
|
|
0b10001,
|
|
0b01111,
|
|
0b00000,
|
|
)
|
|
|
|
def ctrl_relais(active = True):
|
|
if active:
|
|
relais.value(0)
|
|
#led_onboard.on()
|
|
else:
|
|
relais.value(1)
|
|
#led_onboard.off()
|
|
|
|
lcd.backlight_on()
|
|
lcd.clear()
|
|
lcd.custom_char(0, degree)
|
|
lcd.custom_char(1, umlaut_a)
|
|
|
|
temp_tgt = 28.0
|
|
temp_gap = 0.5
|
|
is_heating = False
|
|
heat_string = ""
|
|
system_on = False
|
|
system_on_string = "OFF"
|
|
temp_curr = 0
|
|
|
|
lcd.move_to(0, 0)
|
|
lcd.putstr(" G" + chr(1) + "rbox Manager\n (Ver. "+ VERSION + ")")
|
|
sleep_ms(3000)
|
|
|
|
# Buttons
|
|
PIN_BUTTON_1 = 17
|
|
PIN_BUTTON_2 = 16
|
|
PIN_BUTTON_3 = 15
|
|
button1 = Pin(PIN_BUTTON_1, Pin.IN, Pin.PULL_DOWN)
|
|
button2 = Pin(PIN_BUTTON_2, Pin.IN, Pin.PULL_DOWN)
|
|
button3 = Pin(PIN_BUTTON_3, Pin.IN, Pin.PULL_DOWN)
|
|
|
|
button1_last = ticks_ms()
|
|
button2_last = ticks_ms()
|
|
button3_last = ticks_ms()
|
|
|
|
def button_action(pin):
|
|
global temp_tgt
|
|
global button1_last
|
|
global button2_last
|
|
global button3_last
|
|
global system_on
|
|
global system_on_string
|
|
|
|
if pin is button1:
|
|
if ticks_diff(ticks_ms(), button1_last) > 750:
|
|
temp_tgt -= 0.5
|
|
#lcd.move_to(5, 1)
|
|
#lcd.putstr("{0:3.1f}".format(temp_tgt))
|
|
button1_last = ticks_ms()
|
|
elif pin is button2:
|
|
if ticks_diff(ticks_ms(), button2_last) > 750:
|
|
temp_tgt += 0.5
|
|
#lcd.move_to(5, 1)
|
|
#lcd.putstr("{0:3.1f}".format(temp_tgt))
|
|
button2_last = ticks_ms()
|
|
elif pin is button3:
|
|
if ticks_diff(ticks_ms(), button3_last) > 750:
|
|
system_on = not system_on
|
|
if system_on == True:
|
|
system_on_string = "ON "
|
|
else:
|
|
system_on_string = "OFF"
|
|
#lcd.move_to(13, 1)
|
|
#lcd.putstr(system_on_string)
|
|
button3_last = ticks_ms()
|
|
|
|
button1.irq(trigger = Pin.IRQ_RISING, handler = button_action)
|
|
button2.irq(trigger = Pin.IRQ_RISING, handler = button_action)
|
|
button3.irq(trigger = Pin.IRQ_RISING, handler = button_action)
|
|
|
|
while True:
|
|
temp_sensor.convert_temp()
|
|
sleep_ms(750)
|
|
temp_curr = temp_sensor.read_temp(sensor_id)
|
|
|
|
if system_on == True and temp_curr < temp_tgt - temp_gap:
|
|
is_heating = True
|
|
elif system_on == True and temp_curr > temp_tgt + temp_gap:
|
|
is_heating = False
|
|
elif system_on == False:
|
|
is_heating = False
|
|
|
|
ctrl_relais(is_heating)
|
|
|
|
if is_heating == True:
|
|
heat_string = ">H<"
|
|
else:
|
|
heat_string = " "
|
|
|
|
lcd.move_to(0, 0)
|
|
lcd.putstr("ACT: {0:3.1f}".format(temp_curr) + chr(0) + "C " + heat_string +
|
|
"\nTGT: {0:3.1f}".format(temp_tgt) + chr(0) + "C " + system_on_string) |