57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
#include "dev/msb430-uart1.h"
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#include "dev/rs232.h"
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#include "sys/clock.h"
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#include "dev/slip.h"
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void
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slip_arch_writeb(unsigned char c)
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{
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rs232_send(c);
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}
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/*---------------------------------------------------------------------------*/
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/*
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* The serial line is used to transfer IP packets using slip. To make
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* it possible to send debug output over the same line we send debug
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* output as slip frames (i.e delimeted by SLIP_END).
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*
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*/
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int
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putchar(int c)
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{
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#define SLIP_END 0300
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static char debug_frame = 0;
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if (!debug_frame) { /* Start of debug output */
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slip_arch_writeb(SLIP_END);
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slip_arch_writeb('\r'); /* Type debug line == '\r' */
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debug_frame = 1;
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}
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slip_arch_writeb((char)c);
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/*
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* Line buffered output, a newline marks the end of debug output and
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* implicitly flushes debug output.
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*/
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if (c == '\n') {
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slip_arch_writeb(SLIP_END);
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debug_frame = 0;
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}
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clock_delay(100);
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return c;
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}
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/**
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* Initalize the RS232 port and the SLIP driver.
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*
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*/
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void
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slip_arch_init(unsigned long ubr)
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{
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rs232_set_input(slip_input_byte);
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}
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