how to read a large number of data from Serial?

swortain

I want to read a lot of data(about 40000+ bytes) from serial. and I just read it( by using readChar()) and print it, than it wil crash. I want to know that if I was wrong or Processing can't handle that much data from Serial?

GoToLoop

If by print you meant using Processing's print() or println() functions,
just know that the console provided by Processing's IDE can't handle too much! :-O

Perhaps you may try getting a compiled ".jar" and run it from a console terminal! :-??

swortain

Actually I want to read an image through Serial. Print is for debugging, so if I don't use print(). Is there any other way to know what't the program going on? Thanks!

GoToLoop

Well, print to a file! 8-|

swortain

Thank you first. Then I got another problem that I saved all the data in a String and its length is correctly. but sometimes(actually it's about 80%) Processing can receive the first 12 bytes data(it's the answer packet) but can't receive the followed data packets(30032 bytes). readChar() returns 0xffff. I don't know why?