tushki7
Full Member level 4
no, schematic only for example. The real one is i want to intercept data from lcd on different microcontroller (machnine lcd module). I have counting machine, i want to intercept data from lcd on the machine. Then send result to computer.
Hey..
First thing always write (what you really want to do things here).. there is no point in hiding information what you really want to do..
Ok Now i assume you want to get data from counting machine i.e. data = no.??
1. if i want to do this - then first thing i would try to do is to get output directly from sensor(output from counting machine sensor not from the counting machine microcontroller) and put that output into my own microcontroller.. try this
2. if you dont want to go with first option then you should know few things :
a. If Lcd is working in 4 bit mode or 8 bit mode,
b. You cant get output directly by just intercepting data lines, the two thing you should know about lcd is : it works only if we send command and then data to lcd. Though all data or command are sent to lcd via D0-D7 lines, proper use of en, rs and wr pins will tell lcd is it command or data(counting no.).
c. now as you know you only need data part i.e. counting number, you can filter away the unnecessary part (command part)
d. interface all pins of lcd with microcontroller and make a program such that it will filter the command part.. For this First you should do some programming with lcd only, when you get know enough about how you can send data(initialize lcd and display characters on it), then go for this interception part. p.s - Try to do interfacing with lcd in real world not in simulator you will gain alot.
it will take some time but eventually you will learn something.. :wink:
Good Luck :twisted: