Dear Graeme Russ, In message <[email protected]> you wrote: > > > Assume we have a simple device with a small Rx FIFO - say, 8 bytes > > only. Guess what the chances are that we will overrun this FIFO (and > > then lose characters) before the other side stops sending? > > Should be zero (if you disable the hardware Tx buffer) unless you have an > incredibly slow Rx routine (in which case, your baud rate is too high). And > even with a Tx buffer in play the solution is fairly simple - After sending > an XOFF, flush the Rx buffer (and remote Tx buffer) into an internal buffer > until tstc() returns false - use this buffer for getc() until it is empty.
Things are becoming more and more complicated, it seems. If you ask me: forget about all this, and stick with single line input. Do the processing on the sender's side (always wait for a prompt before sending the next line). This is MUCH easier. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: [email protected] "Never face facts; if you do, you'll never get up in the morning." - Marlo Thomas _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
