338 lines
7.0 KiB
C
338 lines
7.0 KiB
C
/*
|
|
* File : console.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2006, RT-Thread Development Team
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://openlab.rt-thread.com/license/LICENSE
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2006-09-15 QiuYi the first version
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
#include <rthw.h>
|
|
|
|
#include <bsp.h>
|
|
|
|
static unsigned addr_6845;
|
|
static rt_uint16_t *crt_buf;
|
|
static rt_int16_t crt_pos;
|
|
|
|
extern void init_keyboard();
|
|
extern void rt_keyboard_isr(void);
|
|
extern rt_bool_t rt_keyboard_getc(char* c);
|
|
|
|
extern void rt_serial_init(void);
|
|
extern char rt_serial_getc(void);
|
|
extern void rt_serial_putc(const char c);
|
|
|
|
void rt_console_putc(int c);
|
|
|
|
/**
|
|
* @addtogroup QEMU
|
|
*/
|
|
/*@{*/
|
|
|
|
/**
|
|
* This function initializes cga
|
|
*
|
|
*/
|
|
void rt_cga_init(void)
|
|
{
|
|
rt_uint16_t volatile *cp;
|
|
rt_uint16_t was;
|
|
rt_uint32_t pos;
|
|
|
|
cp = (rt_uint16_t *) (CGA_BUF);
|
|
was = *cp;
|
|
*cp = (rt_uint16_t) 0xA55A;
|
|
if (*cp != 0xA55A)
|
|
{
|
|
cp = (rt_uint16_t *) (MONO_BUF);
|
|
addr_6845 = MONO_BASE;
|
|
}
|
|
else
|
|
{
|
|
*cp = was;
|
|
addr_6845 = CGA_BASE;
|
|
}
|
|
|
|
/* Extract cursor location */
|
|
outb(addr_6845, 14);
|
|
pos = inb(addr_6845+1) << 8;
|
|
outb(addr_6845, 15);
|
|
pos |= inb(addr_6845+1);
|
|
|
|
crt_buf = (rt_uint16_t *)cp;
|
|
crt_pos = pos;
|
|
}
|
|
|
|
/**
|
|
* This function will write a character to cga
|
|
*
|
|
* @param c the char to write
|
|
*/
|
|
static void rt_cga_putc(int c)
|
|
{
|
|
/* if no attribute given, then use black on white */
|
|
if (!(c & ~0xff)) c |= 0x0700;
|
|
|
|
switch (c & 0xff)
|
|
{
|
|
case '\b':
|
|
if (crt_pos > 0)
|
|
{
|
|
crt_pos--;
|
|
crt_buf[crt_pos] = (c&~0xff) | ' ';
|
|
}
|
|
break;
|
|
case '\n':
|
|
crt_pos += CRT_COLS;
|
|
/* cascade */
|
|
case '\r':
|
|
crt_pos -= (crt_pos % CRT_COLS);
|
|
break;
|
|
case '\t':
|
|
rt_console_putc(' ');
|
|
rt_console_putc(' ');
|
|
rt_console_putc(' ');
|
|
rt_console_putc(' ');
|
|
rt_console_putc(' ');
|
|
break;
|
|
default:
|
|
crt_buf[crt_pos++] = c; /* write the character */
|
|
break;
|
|
}
|
|
|
|
if (crt_pos >= CRT_SIZE)
|
|
{
|
|
rt_int32_t i;
|
|
rt_memcpy(crt_buf, crt_buf + CRT_COLS, (CRT_SIZE - CRT_COLS) << 1);
|
|
for (i = CRT_SIZE - CRT_COLS; i < CRT_SIZE; i++)
|
|
crt_buf[i] = 0x0700 | ' ';
|
|
crt_pos -= CRT_COLS;
|
|
}
|
|
|
|
outb(addr_6845, 14);
|
|
outb(addr_6845+1, crt_pos >> 8);
|
|
outb(addr_6845, 15);
|
|
outb(addr_6845+1, crt_pos);
|
|
}
|
|
|
|
/**
|
|
* This function will write a character to serial an cga
|
|
*
|
|
* @param c the char to write
|
|
*/
|
|
void rt_console_putc(int c)
|
|
{
|
|
rt_cga_putc(c);
|
|
rt_serial_putc(c);
|
|
}
|
|
|
|
/* RT-Thread Device Interface */
|
|
#define CONSOLE_RX_BUFFER_SIZE 64
|
|
static struct rt_device console_device;
|
|
static rt_uint8_t rx_buffer[CONSOLE_RX_BUFFER_SIZE];
|
|
static rt_uint32_t read_index, save_index;
|
|
|
|
static rt_err_t rt_console_init (rt_device_t dev)
|
|
{
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t rt_console_open(rt_device_t dev, rt_uint16_t oflag)
|
|
{
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t rt_console_close(rt_device_t dev)
|
|
{
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t rt_console_control(rt_device_t dev, int cmd, void *args)
|
|
{
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_size_t rt_console_write(rt_device_t dev, rt_off_t pos, const void * buffer, rt_size_t size)
|
|
{
|
|
rt_size_t i = size;
|
|
const char* str = buffer;
|
|
|
|
while(i--)
|
|
{
|
|
rt_console_putc(*str++);
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static rt_size_t rt_console_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
|
|
{
|
|
rt_uint8_t* ptr = buffer;
|
|
rt_err_t err_code = RT_EOK;
|
|
|
|
/* interrupt mode Rx */
|
|
while (size)
|
|
{
|
|
rt_base_t level;
|
|
|
|
/* disable interrupt */
|
|
level = rt_hw_interrupt_disable();
|
|
|
|
if (read_index != save_index)
|
|
{
|
|
/* read a character */
|
|
*ptr++ = rx_buffer[read_index];
|
|
size--;
|
|
|
|
/* move to next position */
|
|
read_index ++;
|
|
if (read_index >= CONSOLE_RX_BUFFER_SIZE)
|
|
read_index = 0;
|
|
}
|
|
else
|
|
{
|
|
/* set error code */
|
|
err_code = -RT_EEMPTY;
|
|
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
break;
|
|
}
|
|
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
}
|
|
|
|
/* set error code */
|
|
rt_set_errno(err_code);
|
|
return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
|
|
}
|
|
|
|
static void rt_console_isr(int vector, void* param)
|
|
{
|
|
char c;
|
|
rt_bool_t ret;
|
|
rt_base_t level;
|
|
|
|
if(INTUART0_RX == vector)
|
|
{
|
|
c = rt_serial_getc();
|
|
ret = RT_TRUE;
|
|
}
|
|
else
|
|
{
|
|
rt_keyboard_isr();
|
|
|
|
ret = rt_keyboard_getc(&c);
|
|
}
|
|
|
|
if(ret == RT_FALSE)
|
|
{
|
|
/* do nothing */
|
|
}
|
|
else
|
|
{
|
|
/* disable interrupt */
|
|
level = rt_hw_interrupt_disable();
|
|
|
|
/* save character */
|
|
rx_buffer[save_index] = c;
|
|
save_index ++;
|
|
if (save_index >= CONSOLE_RX_BUFFER_SIZE)
|
|
save_index = 0;
|
|
|
|
/* if the next position is read index, discard this 'read char' */
|
|
if (save_index == read_index)
|
|
{
|
|
read_index ++;
|
|
if (read_index >= CONSOLE_RX_BUFFER_SIZE)
|
|
read_index = 0;
|
|
}
|
|
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
}
|
|
|
|
/* invoke callback */
|
|
if (console_device.rx_indicate != RT_NULL)
|
|
{
|
|
rt_size_t rx_length;
|
|
|
|
/* get rx length */
|
|
rx_length = read_index > save_index ?
|
|
CONSOLE_RX_BUFFER_SIZE - read_index + save_index :
|
|
save_index - read_index;
|
|
|
|
if(rx_length > 0)
|
|
{
|
|
console_device.rx_indicate(&console_device, rx_length);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function initializes console
|
|
*
|
|
*/
|
|
void rt_hw_console_init(void)
|
|
{
|
|
rt_cga_init();
|
|
rt_serial_init();
|
|
init_keyboard();
|
|
|
|
/* install keyboard isr */
|
|
rt_hw_interrupt_install(INTKEYBOARD, rt_console_isr, RT_NULL, "kbd");
|
|
rt_hw_interrupt_umask(INTKEYBOARD);
|
|
|
|
rt_hw_interrupt_install(INTUART0_RX, rt_console_isr, RT_NULL, "COM1");
|
|
rt_hw_interrupt_umask(INTUART0_RX);
|
|
|
|
console_device.type = RT_Device_Class_Char;
|
|
console_device.rx_indicate = RT_NULL;
|
|
console_device.tx_complete = RT_NULL;
|
|
console_device.init = rt_console_init;
|
|
console_device.open = rt_console_open;
|
|
console_device.close = rt_console_close;
|
|
console_device.read = rt_console_read;
|
|
console_device.write = rt_console_write;
|
|
console_device.control = rt_console_control;
|
|
console_device.user_data = RT_NULL;
|
|
|
|
/* register a character device */
|
|
rt_device_register(&console_device,
|
|
"console",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM);
|
|
}
|
|
|
|
/**
|
|
* This function is used to display a string on console, normally, it's
|
|
* invoked by rt_kprintf
|
|
*
|
|
* @param str the displayed string
|
|
*
|
|
* Modified:
|
|
* caoxl 2009-10-14
|
|
* the name is change to rt_hw_console_output in the v0.3.0
|
|
*
|
|
*/
|
|
void rt_hw_console_output(const char* str)
|
|
{
|
|
while (*str)
|
|
{
|
|
rt_console_putc (*str++);
|
|
}
|
|
}
|
|
|
|
/*@}*/
|