81 lines
1.2 KiB
C
81 lines
1.2 KiB
C
#include <uart.h>
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#include <console.h>
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#include <stdio.h>
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#include <stdarg.h>
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FILE *stdin, *stdout, *stderr;
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static console_write_hook write_hook;
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static console_read_hook read_hook;
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static console_read_nonblock_hook read_nonblock_hook;
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void console_set_write_hook(console_write_hook h)
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{
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write_hook = h;
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}
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void console_set_read_hook(console_read_hook r, console_read_nonblock_hook rn)
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{
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read_hook = r;
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read_nonblock_hook = rn;
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}
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int putchar(int c)
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{
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uart_write(c);
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if(write_hook != NULL)
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write_hook(c);
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return c;
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}
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char readchar(void)
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{
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while(1) {
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if(uart_read_nonblock())
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return uart_read();
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if((read_nonblock_hook != NULL) && read_nonblock_hook())
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return read_hook();
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}
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}
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int readchar_nonblock(void)
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{
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return (uart_read_nonblock()
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|| ((read_nonblock_hook != NULL) && read_nonblock_hook()));
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}
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int puts(const char *s)
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{
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while(*s) {
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putchar(*s);
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s++;
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}
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putchar('\n');
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return 1;
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}
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void putsnonl(const char *s)
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{
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while(*s) {
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putchar(*s);
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s++;
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}
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}
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#define PRINTF_BUFFER_SIZE 256
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int printf(const char *fmt, ...)
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{
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va_list args;
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int len;
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char outbuf[PRINTF_BUFFER_SIZE];
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va_start(args, fmt);
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len = vscnprintf(outbuf, sizeof(outbuf), fmt, args);
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va_end(args);
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outbuf[len] = 0;
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putsnonl(outbuf);
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return len;
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}
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