TM1650.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import smbus
import time

class TM1650(object):
    NumTab={
    '0':0x3F,
    '1':0x06,
    '2':0x5B,
    '3':0x4F,
    '4':0x66,
    '5':0x6D,
    '6':0x7D,
    '7':0x07,
    '8':0x7F,
    '9':0x6F,
    '.':0x80,
    ' ':0x00,
    '-':0x40,
    '_':0x08
    }
    bus=object
    OK=0
    rddat=0

    def __init__(self):
        self.OK=0
        try:
            # open /dev/i2c-1
            self.bus = smbus.SMBus(1)
            # set brightness 8 highest , 8 point 0x05
            self.bus.write_byte( 0x27 , 0x00 )
            self.bus.write_byte( 0x27 , 0x05 )
        except:
            print('No hand box');
            return;
        self.bus.write_byte( 0x34 , 0x00)
        self.bus.write_byte( 0x35 , 0x00)
        self.bus.write_byte( 0x36 , self.NumTab['0'])
        self.bus.write_byte( 0x37 , 0x00)
        self.OK=1


    def on(self):
        try:
            # open /dev/i2c-1
            # self.bus = smbus.SMBus(1)
            # set brightness 8 highest , 8 point 0x05
            self.bus.write_byte( 0x27 , 0x05 )
            self.bus.write_byte(0x35 , 0x08)
            self.OK=1
        except:
            print('hand box on fail');


    def L(self,schar):
        try:
            self.bus.write_byte(0x34 , self.NumTab[schar[0]])
            self.bus.write_byte(0x37 , self.NumTab[schar[1]])
        except:
            self.OK=0


    def R(self,schar):
        try:
            if schar=='  ':
                self.bus.write_byte(0x35 , 0x00)
                self.bus.write_byte(0x36 , 0x00)
                return
            if int(schar)<10:
                schar=' '+schar
            self.bus.write_byte( 0x35 , self.NumTab[schar[0]])
            self.bus.write_byte( 0x36 , self.NumTab[schar[1]])

        except:
            self.OK=0


    def _test(self):
        while True:
            self.bus.write_byte( 0x34 , self.NumTab['0'] )
            self.bus.write_byte( 0x35 , self.NumTab['1']|self.NumTab['.'])
            self.bus.write_byte( 0x36 , self.NumTab['2'] )
            self.bus.write_byte( 0x37 , self.NumTab['3'] )
            time.sleep(0.1)
            self.bus.write_byte( 0x34 , self.NumTab['4'] )
            self.bus.write_byte( 0x35 , self.NumTab['5'] )
            self.bus.write_byte( 0x36 , self.NumTab['6'] )
            self.bus.write_byte( 0x37 , self.NumTab['7'] )
            time.sleep(0.1)
            self.bus.write_byte( 0x34 , self.NumTab['8'] )
            self.bus.write_byte( 0x35 , self.NumTab['9'] )
            self.bus.write_byte( 0x36 , self.NumTab['.'])
            self.bus.write_byte( 0x37 , self.NumTab['8'] )
            time.sleep(0.1)
        pass