am use attiny13 and 433mhz rf module for my project , i need to send simple data using attiny13
irashana:
am use attiny13 and 433mhz rf module for my project , i need to send simple data using attiny13
And so?
If you don't want to use a library you will have to figure out how to represent your data as a series of state changes between ON and OFF. There is plenty of noise in the 433 MHz band so you should include lots of redundancy and noise immunity. Do you have experience in signaling?
Article on OOK (On-Off Keying): On–off keying - Wikipedia
Article on Manchester encoding: Manchester code - Wikipedia
I would add a header, a sequence number, and a checksum to your message and repeat the whole thing several times in case noise prevents successful transmission on the first try.
Is there a library available to do the job? You never have to use a library, they are just there for your convenience. Your problem is how to come to a sensible conclusion as to why you wouldn't use one.
Maybe also explain why you are attempting to use an ATtiny13 which has only 64 bytes of RAM. This, I guess, is the reason you can’t use a library.