Comments on: Using the USART of AVR Microcontrollers.

By: rf remote controls

rf remote controls — Tue, 16 Feb 2010 23:03:57 +0000

Thanks for the information! I personally really like your article. This is a great website. I will make sure that I stop back again!.

By: RF Communication Between Microcontrollers – Part III | eXtreme Electronics

RF Communication Between Microcontrollers – Part III | eXtreme Electronics — Sun, 17 Jan 2010 06:18:13 +0000

[...] Using the USART of AVR Microcontrollers. [...]

By: Ramesh

Ramesh — Tue, 12 Jan 2010 10:35:11 +0000

hello avinash
nice job avinash, this is the best avr beginers forum i found on internet.
i have a problem with with an usart implementation.
i tried implementing an usart code using internal RC oscillator at 4MHz using code vision.The hyperterminal displayed junk values(like “..[ “) instead of the chars “1? “2? or “3?,irrespective the value in UDR.
i even implemented the code given above, but the heyperterminal wasn’t accepting any input or displaying any output.
what could be the fault in this case?
is there a way i can rectify it?
there is also external crystal ocsilator on board but how to use it? as i am using codevision compiler it asks me oscilator frequncy
thanks

By: hinduja

hinduja — Wed, 30 Dec 2009 15:11:12 +0000

sir amazing tutorials i read from a lot of sites but nothing as clear as dis one……
sir my objective is to create a usart communication between two microcontroller.shld the information transmitted be first converted to binary form before transmitting through tx line or is the conversion internal. similarly if i want to see the data received should i convert the received data from binary to normal form

By: Vishal G. Mesharm

Vishal G. Mesharm — Mon, 21 Dec 2009 16:15:44 +0000

Dear Sir
I am vishal working on a project in which i have interface RF Module with ATMEGA 32L AVR Microcontroller for wireless communication.
I have already established the communication through wire using USART and adler32 protocol, But when i had connected rf module to the MC, I cannot communicate.
I had connected rf TX module to the TX PIN of AVR, and RF RX module to the RX pin of MC, Also i had made a common ground with powersupply, Still i cannot transmit the desired signal.
Should i connect some IC in between, or is there is another problem
Waiting for the solution
Regards
vishal
(vishalmeshram2007@rediffmailcom)

By: raj

raj — Wed, 02 Dec 2009 03:46:36 +0000

Hello Avinash

Thanks a lot for your excellent articles. This is best place to start with for any AVR or infact any microcontroller beginner.

The way you explain the concepts is uncanny.

By: Ganesh

Ganesh — Wed, 25 Nov 2009 10:34:12 +0000

Hello Avinash!

These are Great and easily understood tutorial.Thank you very very much!!!!
In future tutorial can you Plese add some webcam or similer Cam interface to AVR family,I am waiting eagerly,Thanks again

By: Santosh Sahu

Santosh Sahu — Sun, 04 Oct 2009 17:44:11 +0000

Hello abhinash,i want to communicate 2 ATMEGA16 through RF.if i connect 433mhz reciever and transmitter in RXD and TXD respectively in each ATMEGA16.Then if i’ll transmitt data frm one microcontroller then then,My question is -data will be receive by another ATMEGA16 or the same ATMEGA16?because both ATMEGA16 has 433mhz receiver..plz help me.

By: xTech

xTech — Tue, 29 Sep 2009 19:21:36 +0000

i dont know who are u Mr. Avinash,bt tell u have been amazing…so lucid explanation…just unbeleivable…I shal be gladly waitin to receive ur mail if u can kindly let me know about urself…

By: mitul tailor

mitul tailor — Mon, 21 Sep 2009 04:26:22 +0000

mitul tailor Says:

for communication with microcontroller through hyper terminal, do v need to give any self & remote remote address in the above given program

By: mitul tailor

mitul tailor — Mon, 21 Sep 2009 04:25:14 +0000

for communication with microcontroller through hyper terminal, do v need to give any self & remote remote address

By: From extremeelectronics: AVR USART Tutorial | Solder In The Veins

From extremeelectronics: AVR USART Tutorial | Solder In The Veins — Thu, 17 Sep 2009 13:27:15 +0000

[...] grips with the black art of AVR USART comms. The guys at extremeelectonics have published a very comprehensive tutorial on the various registers related to the AVR USART peripherial, how to set them, [...]

By: Lihil

Lihil — Thu, 03 Sep 2009 01:45:22 +0000

Hey Avinash,

Just have a question in regard to the RS232 protocol. Can it be used to transfer entire blocks of data into the Atmega chips memory?

for example, if we want to store the data line “12345″ in a special matrix in the memory, how should we go about it?

Thanks

By: Jun

Jun — Sat, 29 Aug 2009 06:25:28 +0000

Best tutorials found online for newbies

thank you so much
now I dont have to guess the meaning of the code anymore

great job!

thanks again

By: Siddharth Dev

Siddharth Dev — Tue, 11 Aug 2009 12:11:00 +0000

Hello Avinash!

Great tutorial series. Its a noble work to share knowledge.

I really enjoy the simplicity of your tutorials.

Keep Going!!

By: AVR ATMEGA8535 : USING USART [SERIAL COMM] « My English Blog

AVR ATMEGA8535 : USING USART [SERIAL COMM] « My English Blog — Mon, 20 Jul 2009 01:25:27 +0000

[...] http://extremeelectronics.co.in/avr-tutorials/using-the-usart-of-avr-microcontrollers/ [...]

By: Avinash

Avinash — Tue, 30 Jun 2009 02:52:21 +0000

Hello Dave,

It will work with ATmega168 but you have to replace register names. See datasheet for equivalent name. Like UDR becomes UDR0 and UCSRA becomes UCSR0A.

Thats all

By: kaustubh

kaustubh — Mon, 29 Jun 2009 19:29:22 +0000

thank you!it was intresting!

By: Dave from USA

Dave from USA — Mon, 29 Jun 2009 15:28:21 +0000

Hey very cool tutorial…is will this code also work with the UART on an ATMega168 MCU?

By: Pankaj

Pankaj — Thu, 28 May 2009 06:17:40 +0000

wow. now i understand how it actually works.
thanks