Tasmota/tasmota/berry/drivers/tm1637.be

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#-
Simplified Tasmota TM1637 driver written in Berry
Might be helpful in the case of using multiple displays
Supports only the 4 digit basic display
DIO_PIN and CLK_PIN are your esp32 pin numbers
How to use
> load('tm1637')
> tm = Tm1637(DIO_PIN, CLK_PIN)
> tm.set_on(4)
> tm.print('0123')
> tm.print(456)
Add custom commands to the native Tasmota console:
> tm_add_custom_commands(DIO_PIN, CLK_PIN)
And then:
TmBrightness 2
TmPrint 0123
TmPrint -5.67
Note: adding these commands to autoexec.be should be performed via creating an additional .be file with the content:
tm_add_custom_commands(DIO_PIN, CLK_PIN)
and then loading it in autoexec.be via load('tm1637') and load('script_name')
The direct addition may not work
-#
class Tm1637
static var CMD_CTRL = 0x80
static var CMD_DISP_ON = 0x08
static var CMD_DATA = 0x40
static var CMD_ADDR = 0xC0
static var SYMB_DOT = 0x80
static var DIGIT_MAP = {
'0': 0x3F,
'1': 0x06,
'2': 0x5B,
'3': 0x4F,
'4': 0x66,
'5': 0x6D,
'6': 0x7D,
'7': 0x07,
'8': 0x7F,
'9': 0x6F,
'-': 0x40,
' ': 0x00
}
var PIN_DIO
var PIN_CLK
def init(dio, clk)
self.PIN_DIO = dio
self.PIN_CLK = clk
gpio.pin_mode(self.PIN_DIO, gpio.OUTPUT)
gpio.pin_mode(self.PIN_CLK, gpio.OUTPUT)
gpio.digital_write(self.PIN_DIO, 1)
gpio.digital_write(self.PIN_CLK, 1)
end
def start()
gpio.digital_write(self.PIN_DIO, 1)
gpio.digital_write(self.PIN_CLK, 1)
gpio.digital_write(self.PIN_DIO, 0)
end
def stop()
gpio.digital_write(self.PIN_CLK, 0)
gpio.digital_write(self.PIN_DIO, 0)
gpio.digital_write(self.PIN_CLK, 1)
gpio.digital_write(self.PIN_DIO, 1)
end
def ack()
gpio.digital_write(self.PIN_CLK, 0)
gpio.pin_mode(self.PIN_DIO, gpio.INPUT_PULLUP)
var ack_state = gpio.digital_read(self.PIN_DIO) == 0
gpio.digital_write(self.PIN_CLK, 1)
gpio.digital_write(self.PIN_CLK, 0)
gpio.pin_mode(self.PIN_DIO, gpio.OUTPUT)
return ack_state
end
def write_bit(bitval)
gpio.digital_write(self.PIN_CLK, 0)
gpio.digital_write(self.PIN_DIO, bitval)
gpio.digital_write(self.PIN_CLK, 1)
end
def write_byte(byteval)
for pos: 0..7
self.write_bit((byteval >> pos) & 0x01)
end
end
def send_command(command)
self.start()
self.write_byte(command)
var ack_state = self.ack()
self.stop()
return ack_state
end
def send_data(data)
var ack_state = true
self.start()
for i : 0..size(data)-1
self.write_byte(data[i])
ack_state = self.ack() && ack_state
end
self.stop()
return ack_state
end
# 0-8 range, 0 to 'OFF'
def set_on(brightness)
if brightness == nil || brightness > 8
brightness = 8
elif brightness < 0
brightness = 0
end
var cmd = self.CMD_CTRL
if brightness
cmd |= self.CMD_DISP_ON
brightness -= 1
end
return self.send_command(cmd | brightness)
end
def print(num)
import string
num = str(num)
var max_str_len = 4
do
var dot_pos = string.find(num, '.')
if dot_pos >= 0 && dot_pos < 5
max_str_len = 5
end
end
if size(num) > max_str_len
num = string.split(num, max_str_len)[0]
end
num = format('%4s', num)
var payload = bytes(-5)
payload[0] = self.CMD_ADDR
var int_offset = 1
for i : 0..size(num)-1
if num[i] == '.'
payload[i] |= self.SYMB_DOT
int_offset = 0
else
payload[i + int_offset] = self.DIGIT_MAP[num[i]]
end
end
var ack_state = self.send_command(self.CMD_DATA) && self.send_data(payload)
if !ack_state
log('TM1637 - no ACK, please check connections')
end
return ack_state
end
def clear()
self.print(' ')
end
# Won't be called on the system restart
def deinit()
self.set_on(0)
end
end
def tm_add_custom_commands(dio, clk)
var tm = Tm1637(dio, clk)
tm.clear()
tm.set_on(4)
tasmota.add_cmd('tmprint', def(cmd, idx, payload)
tm.print(payload) ? tasmota.resp_cmnd_done() : tasmota.resp_cmnd_failed()
end)
# 0-8 range, 0 to 'OFF'
tasmota.add_cmd('tmbrightness', def(cmd, idx, payload)
tm.set_on(int(payload)) ? tasmota.resp_cmnd_done() : tasmota.resp_cmnd_failed()
end)
log("Tasmota custom commands registered: TmPrint, TmBrightness")
end