mirror of https://github.com/arendst/Tasmota.git
81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
# Sample Relay driver for 595 shift registers
|
|
# -------------------------------------------------------------------------
|
|
# You can cascade multiple '595 for a total of 28 relays (including other native relays)
|
|
# Include the following lines in 'preinit.be'
|
|
# import Shift595
|
|
# tasmota.add_driver(Shift595(srclk,ser,rclk,count,inverted))
|
|
# where
|
|
# srclk : GPIO number connected to the 595's SRCLK pin (serial shift clock)
|
|
# ser : GPIO number connected to the 595's SER pin (serial data in)
|
|
# rclk : GPIO number connected to the 595's RCLK pin (transfer to output)
|
|
# count : number of used output pins / relays (must be consecutive)
|
|
# inverted : if true, relay is driven by a 0/LOW inverted (instead of 1/HIGH)
|
|
#
|
|
# To use multiple '595, connects
|
|
# all SRCLK together to GPIO srclk
|
|
# all RCLK together to GPIO rclk
|
|
# GPIO ser to SER input of first '595
|
|
# QH' output of first '595 to SER input of 2nd '595 and so on
|
|
# -------------------------------------------------------------------------
|
|
|
|
import string
|
|
import gpio
|
|
|
|
class Shift595
|
|
|
|
var srclk, ser, rclk, count, inverted
|
|
var first, state
|
|
|
|
def log_relay(relay)
|
|
var s = ""
|
|
for r:relay if r s+='1' else s+='0' end end
|
|
log("595: "+s,2)
|
|
end
|
|
|
|
def shift_out(relay)
|
|
self.log_relay(relay)
|
|
|
|
for i:0..size(relay)-1
|
|
var bit
|
|
bit = (relay[size(relay)-1 - i]) ? int(!self.inverted) : int(self.inverted)
|
|
gpio.digital_write(self.srclk, 0)
|
|
gpio.digital_write(self.ser, bit)
|
|
gpio.digital_write(self.srclk, 1)
|
|
end
|
|
|
|
gpio.digital_write(self.rclk, 1)
|
|
gpio.digital_write(self.rclk, 0)
|
|
gpio.digital_write(self.srclk, 0)
|
|
end
|
|
|
|
def init(srclk, ser, rclk, count, inverted)
|
|
self.srclk= srclk
|
|
self.ser = ser
|
|
self.rclk = rclk
|
|
self.count = count
|
|
self.inverted = inverted
|
|
self.first = tasmota.global.devices_present
|
|
tasmota.global.devices_present += count
|
|
|
|
gpio.pin_mode(self.srclk, gpio.OUTPUT)
|
|
gpio.pin_mode(self.ser, gpio.OUTPUT)
|
|
gpio.pin_mode(self.rclk, gpio.OUTPUT)
|
|
gpio.digital_write(self.srclk, 0)
|
|
gpio.digital_write(self.ser, 0)
|
|
gpio.digital_write(self.rclk, 0)
|
|
|
|
self.state = 0
|
|
end
|
|
|
|
def set_power_handler(cmd, idx)
|
|
var new_state = tasmota.get_power()[self.first..self.first+self.count]
|
|
if self.state != new_state
|
|
self.state = new_state
|
|
self.shift_out(self.state)
|
|
end
|
|
end
|
|
|
|
end
|
|
|
|
return Shift595 # allow using 'import' instead of 'load()'
|