gets function for receiving uart data doesn't work

[nehallove]

I am using PIC16f1937 and I am using UART. getc() and putc() works. But gets(string) doesn't work.

[Ttelmah]

Big difference is you need to send a line feed before gets will return.

Best Wishes

[temtronic]

also add 'errors' to the use rs232(...) statement to avoid UART 'lockup'.

[asmboy]

Let me politely add, that i never have used gets() as it makes it too easy to hang the program.

The ONLY TWO receive functions i ever use on the USART are:
KBHIT, and when it is TRUE.

mybyte=getc();
and follow that -- process and loop while KBHIT stays true.

I build a string buffer as i go, ignoring ASC 10 and replacing ASC 13 with ASC 0 in the recovered string data.

By putting a KBHIT, conditional block in main() - you can run other processes instead of stall on the 'deadwait' that the pitiful (and really useless) GETS() imposes.

[Douglas Kennedy]

Many fail to recognize that rs232 is asynchronous...yes it is never ever synchronized to your code unless you use flow control or if you have a very short isr linked to the RDA interrupt. Never never put delay_xx or puts or printf into an isr and expect a pleasant result.
The code below might work sometimes and sometimes not. The reason is while the puts is sending data the gets is blocked. If you are typing at a keyboard and stop to view the puts data before typing the next line you have created human flow control and it has a good chance of working. Otherwise just hope it's your lucky day.

[nehallove]

Thank you guys.
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nehal