diff options
Diffstat (limited to 'nuttx/arch/8051/src/up_putc.c')
-rw-r--r-- | nuttx/arch/8051/src/up_putc.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/nuttx/arch/8051/src/up_putc.c b/nuttx/arch/8051/src/up_putc.c new file mode 100644 index 000000000..a4b96e23f --- /dev/null +++ b/nuttx/arch/8051/src/up_putc.c @@ -0,0 +1,81 @@ +/************************************************************************ + * up_putc.c + * + * Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/arch.h> +#include "up_internal.h" + +/************************************************************************ + * Private Functions + ************************************************************************/ + +static void _up_putc(int ch) __naked +{ +#if 1 + ch; /* To avoid unreferenced argument warning */ + _asm + mov a, dpl + ljmp PM2_ENTRY_COUT + _endasm; +#else + ch; /* To avoid unreferenced argument warning */ + _asm + mov a, dpl +cout: jnb ti, cout + clr ti + mov sbuf, a + ret + _endasm; +#endif +} + +/************************************************************************ + * Public Functions + ************************************************************************/ + +int up_putc(int ch) +{ + _up_putc(ch); + if (ch == '\n') + { + _up_putc('\r'); + } + return ch; +} + |