rxen= atmega16
rxen0= atmega484

and so on with the others, i changed this and it compile without and error, i also have to change the void main() to int main() cause when compiling that part caused a warning so i changed it.
My baud rate is also 2400bps but i’m running with 20MHz crystal and because of that according to my datasheet table of UDRR the value must be 520 for both TX and RX obviously.

But sadly nothing occurs int the receiver, the leds don’t glow, when i measure the voltage in the RX pin of the uC, and i press a button in th TX module a quick change of voltage occurs, so i think the uC RX is receiving data but it doesn’t send it to the portc.
If i measure voltage in the pin TX of the TX uC or in the data pin of the TX RF module nothing happends when i press the buttons… as i told you before just happen in the RX pin of the RX uC of RF module.

I don’t know what to do i all the code is the same i check carefully the name of the usart registers to make the modification to your library i don’t think that it could be a problem all seems to compile ok without errors and warnings.

plz help me out..

sir..kindly tell me ..that do we need to use only sm-rx-02 ask & sm tx 01 ask rfmodules…only
or i can use any other rf module also….
i have purchsed a Rs.250 rx tx pair…
but dont know whether is it…the same which u have mentioned here…

thanx..
geek

plz sir,kindly tell me is this really possible..

Yes. Why not ?

have you written these codes for atmega16..????

It is very clear from the above article!

i m a Ist year eng.. student…
Your tutorials hv cleared lot of my problems.
Now.I am trying to implement your project of tx and receiving data..

but i m using atmega8 at the transmitting end..and atmega32 at the receiving end..
plz sir,kindly tell me is this really possible..
if yes, where do i need to make the changes in the codes..

Sorry..if i m asking smthing foolish..
bt plz help me..

have you written these codes for atmega16..????

Thank you sir..
geek..

Firstly loads of thanks for such a great hard work and making things easy for begineer’s like me:):)

Sorry if my question is silly, I hope you will answer

I am trying to experiment your RF module using Atmega32 microcontroller. But I saw in some internet pages that USART can be used only for wireless communication and even from my friends. Is it so?. The code available in this RF module Part III is for RF wireless communication only right??

Thanks in advance very much sir. Looking forward for your valuable reply asap.

The page on interrupts did help, thank you. I’ve had to delay working on this specific tutorial for a while since the school semester started, but I have been working on an RFID system for my senior design project using many of the principles I’ve learned from your tutorials. I should finish it by December and I’ll try to post it on youtube so others can learn from it too.

Thanks,
Jake

Please use this page to find out the name of ISRs

http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html

For ATmega328p the name for USART receive complete interrupt is “USART_RX_vect ”

Hope it helps.

First of all, your tutorials have helped me immensely, thank you so much.

I have been implementing many of the projects in your tutorials using Atmega328p MCU’s and am trying to do the same here. For all of the registers, I have compared the Atmega16 and Atmega328p datasheets to implement the same functionality on the 328p. The problem I cannot figure out, is the USART interrupt vectors. When I compile the code, I get a warning: “‘USART_RXC_vector’ appears to be a misspelled signal handler.”

In both datasheets there is mention of “USART_RXC” in the ISR sections, however, I do not understand why USART_RXC_VECTOR is accepted by the compiler for the m16 and not the m328p. Can you please help me?

(I do see that in “USART.h” there is the line “#define USART_RXC_VECT USART_RXC_vect” which is noted to change for each MCU, but I dont know what it would change to for the 328p, if at all because the “USART_RXC” ISR is listed as the same thing for both MCU’s)

Thank You