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Support Forum » comminicating thru uart

June 02, 2009
by HarmVeenstra
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comminicating thru uart

using the following code I can send a string to my PC running Hyperterm (115200,N,8,1)

// start up the serial port
uart_init();
FILE uart_str = FDEV_SETUP_STREAM(uart_putchar, uart_getchar, _FDEV_SETUP_RW);
stdin = stdout = &uart_stream;
printf_P(PSTR("hallo"));

but I can't seem to figure out how to read text back that I type in Hyperterm.

Do I need to read 1 char at a time, or can I receive an entire string ?

June 04, 2009
by Starwarslegokid
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Hi HarmVeenstra,

Take a look at the servo guided water squirter tutorial, It shows how you can make the microcontoller do different things by what key is pressed. It waits for a message to be reciceved and then stores it into a variable that you read. I thinking you will have to do it one char at a time, every time you press a key that message is sent to the controller so to type a word, it be allot of messages.

Hope this helps B-) Scott

June 04, 2009
by HarmVeenstra
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Thanks for the tip. I found out that my code was OK. The problem is that Micorsoft's HyperTerm is a pice of cr*p! I now use a differnt terminal program, one that was designed to be used with microcontrollers.

June 04, 2009
by Starwarslegokid
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What terminal are you using?

June 07, 2009
by HarmVeenstra
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Sorry for the late reply.

http://hw-server.com/software/termv19b.html

Download it from there, because the link to the homepage doesn't work.

Rgds.

June 09, 2009
by Starwarslegokid
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Thanks for posting the link, I like the terminal allot more than the hyper terminal, it works very nice B-)

Thanks again!

Scott B-)

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