115 lines
2.0 KiB
C
115 lines
2.0 KiB
C
|
/*
|
||
|
|
* File : zdevice.c
|
||
|
|
* the implemention of zmodem protocol.
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2011-03-29 itspy
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <rtthread.h>
|
||
|
|
#include <finsh.h>
|
||
|
|
#include <shell.h>
|
||
|
|
#include <rtdef.h>
|
||
|
|
#include <dfs.h>
|
||
|
|
#include <dfs_file.h>
|
||
|
|
#include <dfs_posix.h>
|
||
|
|
#include "zdef.h"
|
||
|
|
|
||
|
|
|
||
|
|
rt_uint32_t Line_left = 0; /* left number of data in the read line buffer*/
|
||
|
|
rt_uint32_t Left_sizes = 0; /* left file sizes */
|
||
|
|
rt_uint32_t Baudrate = BITRATE; /* console baudrate */
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
rt_uint32_t get_device_baud(void)
|
||
|
|
{
|
||
|
|
return(Baudrate);
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_uint32_t get_sys_time(void)
|
||
|
|
{
|
||
|
|
return(0L);
|
||
|
|
}
|
||
|
|
|
||
|
|
void zsend_byte(rt_uint16_t ch)
|
||
|
|
{
|
||
|
|
rt_device_write(zmodem.device, 0, &ch,1);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
void zsend_line(rt_uint16_t c)
|
||
|
|
{
|
||
|
|
rt_uint16_t ch;
|
||
|
|
|
||
|
|
ch = (c & 0377);
|
||
|
|
rt_device_write(zmodem.device, 0, &ch, 1);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_int16_t zread_line(rt_uint16_t timeout)
|
||
|
|
{
|
||
|
|
char *str;
|
||
|
|
static char buf[10];
|
||
|
|
|
||
|
|
if (Line_left > 0)
|
||
|
|
{
|
||
|
|
Line_left -= 1;
|
||
|
|
return (*str++ & 0377);
|
||
|
|
}
|
||
|
|
Line_left = 0;
|
||
|
|
timeout/=5;
|
||
|
|
while (1)
|
||
|
|
{
|
||
|
|
Line_left = rt_device_read(shell->device, 0, buf, 1);
|
||
|
|
if (Line_left)
|
||
|
|
{
|
||
|
|
Line_left = Line_left;
|
||
|
|
str = buf;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (Line_left < 1) return TIMEOUT;
|
||
|
|
Line_left -=1;
|
||
|
|
|
||
|
|
return (*str++ & 0377);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* send a string to the modem, processing for \336 (sleep 1 sec)
|
||
|
|
* and \335 (break signal)
|
||
|
|
*/
|
||
|
|
void zsend_break(char *cmd)
|
||
|
|
{
|
||
|
|
|
||
|
|
while (*cmd++)
|
||
|
|
{
|
||
|
|
switch (*cmd)
|
||
|
|
{
|
||
|
|
case '\336':
|
||
|
|
continue;
|
||
|
|
case '\335':
|
||
|
|
rt_thread_delay(RT_TICK_PER_SECOND);
|
||
|
|
continue;
|
||
|
|
default:
|
||
|
|
zsend_line(*cmd);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* send cancel string to get the other end to shut up */
|
||
|
|
void zsend_can(void)
|
||
|
|
{
|
||
|
|
static char cmd[] = {24,24,24,24,24,24,24,24,24,24,0};
|
||
|
|
|
||
|
|
zsend_break(cmd);
|
||
|
|
rt_kprintf("\x0d");
|
||
|
|
Line_left=0; /* clear Line_left */
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* end of zdevice.c */
|