def manual_move_end_setter():
import RPi.GPIO as GPIO
from time import sleep
from DBFunctions import curtain_length, current_position, set_curtain_length
while True:
cnx = DBFunctions.start_connection()
if not cnx: continue
cursor = cnx.cursor(buffered=True)
if GPIO.input(
ENABLE_PIN
): # motor is currently activated; wait before next check
sleep(INTERVAL_BETWEEN_MANUAL_MOVEMENT_CHECKS)
length = curtain_length(cursor)
position = current_position(cursor)
# if curtain open and position not marked at open end
if GPIO.input(OPEN_STOP_PIN) and length != position:
set_curtain_length(cnx, cursor, length)
# if curtain closed and position not marked at closed end
elif GPIO.input(CLOSED_STOP_PIN) and position:
set_curtain_length(cnx, cursor, 0)
sleep(INTERVAL_BETWEEN_MANUAL_MOVEMENT_CHECKS)
cnx.close()
def calibrate(cnx, cursor):
try:
import RPi.GPIO as GPIO
from DBFunctions import direction, set_curtain_length
GPIOUtility.enable_motor()
closed_direction = direction(cursor)
move_to_closed(closed_direction)
step_count = count_steps_from_closed_to_open()
set_curtain_length(cnx, cursor, step_count) # write count to DB
GPIOUtility.disable_motor()
except Exception as error:
try:
GPIOUtility.disable_motor()
except:
pass
ErrorWriter.write_error(error)
def setup(cnx, cursor):
import RPi.GPIO as GPIO
from DBFunctions import set_direction_switch, set_curtain_length
if GPIO.input(OPEN_STOP_PIN) or GPIO.input(CLOSED_STOP_PIN):
raise Exception("To determine direction, curtain cannot be at an end")
GPIOUtility.enable_motor()
# move to end and orient
first_stop_pin = move_to_an_end()
# True (pin) & going "negative" (CLOSED_STOP_PIN) is `direction` = False
# True (pin) & going "positive" (OPEN_STOP_PIN) is `direction` = True
closed_direction = False if first_stop_pin == CLOSED_STOP_PIN else True
set_direction_switch(cnx, cursor,
closed_direction) # write direction to DB
# get number of steps
if OPEN_STOP_PIN == first_stop_pin: opposite_pin = CLOSED_STOP_PIN
else: opposite_pin = OPEN_STOP_PIN
step_count = count_steps_to_end(opposite_pin)
set_curtain_length(cnx, cursor, step_count) # write count to DB
GPIOUtility.disable_motor()