On Fri, 18 May 2007 19:15:21 +0200 Rodolfo Giometti giometti@enneenne.com wrote:
/* Not tested */ unsigned int len = 0; while(len > 0) { usbtty_poll();
/* Do stuff */ }
in __usbtty_puts()
No, this doesn't resolve the problem.
That's really quite odd. The following should be similar to what you did and it *does* seem to work just fine, for me.
/* * Output a string to the usb client port - implementing flow control */ static void __usbtty_puts (const char *str, int len) { int maxlen = usbtty_output.totalsize; int space, n, retries = 0;
/* break str into chunks < buffer size, if needed */ while (len > 0 && retries < 10000L) { usbtty_poll ();
space = maxlen - usbtty_output.size; /* Empty buffer here, if needed, to ensure space... */ if (space) { write_buffer (&usbtty_output); n = MIN (space, MIN (len, maxlen)); buf_push (&usbtty_output, str, n);
str += n; len -= n; retries = 0; }else{ retries++; } } }
Das U-Boot environment: stdin usbtty stdout usbtty usbtty cdc_acm
Best, Bryan