1*10465441SEvalZero /*
2*10465441SEvalZero * File : zdevice.c
3*10465441SEvalZero * the implemention of zmodem protocol.
4*10465441SEvalZero * Change Logs:
5*10465441SEvalZero * Date Author Notes
6*10465441SEvalZero * 2011-03-29 itspy
7*10465441SEvalZero */
8*10465441SEvalZero
9*10465441SEvalZero #include <rtthread.h>
10*10465441SEvalZero #include <finsh.h>
11*10465441SEvalZero #include <shell.h>
12*10465441SEvalZero #include <rtdef.h>
13*10465441SEvalZero #include <dfs.h>
14*10465441SEvalZero #include <dfs_file.h>
15*10465441SEvalZero #include <dfs_posix.h>
16*10465441SEvalZero #include "zdef.h"
17*10465441SEvalZero
18*10465441SEvalZero
19*10465441SEvalZero rt_uint32_t Line_left = 0; /* left number of data in the read line buffer*/
20*10465441SEvalZero rt_uint32_t Left_sizes = 0; /* left file sizes */
21*10465441SEvalZero rt_uint32_t Baudrate = BITRATE; /* console baudrate */
22*10465441SEvalZero
23*10465441SEvalZero
24*10465441SEvalZero
get_device_baud(void)25*10465441SEvalZero rt_uint32_t get_device_baud(void)
26*10465441SEvalZero {
27*10465441SEvalZero return(Baudrate);
28*10465441SEvalZero }
29*10465441SEvalZero
get_sys_time(void)30*10465441SEvalZero rt_uint32_t get_sys_time(void)
31*10465441SEvalZero {
32*10465441SEvalZero return(0L);
33*10465441SEvalZero }
34*10465441SEvalZero
zsend_byte(rt_uint16_t ch)35*10465441SEvalZero void zsend_byte(rt_uint16_t ch)
36*10465441SEvalZero {
37*10465441SEvalZero rt_device_write(zmodem.device, 0, &ch,1);
38*10465441SEvalZero
39*10465441SEvalZero return;
40*10465441SEvalZero }
41*10465441SEvalZero
zsend_line(rt_uint16_t c)42*10465441SEvalZero void zsend_line(rt_uint16_t c)
43*10465441SEvalZero {
44*10465441SEvalZero rt_uint16_t ch;
45*10465441SEvalZero
46*10465441SEvalZero ch = (c & 0377);
47*10465441SEvalZero rt_device_write(zmodem.device, 0, &ch, 1);
48*10465441SEvalZero
49*10465441SEvalZero return;
50*10465441SEvalZero }
51*10465441SEvalZero
zread_line(rt_uint16_t timeout)52*10465441SEvalZero rt_int16_t zread_line(rt_uint16_t timeout)
53*10465441SEvalZero {
54*10465441SEvalZero char *str;
55*10465441SEvalZero static char buf[10];
56*10465441SEvalZero
57*10465441SEvalZero if (Line_left > 0)
58*10465441SEvalZero {
59*10465441SEvalZero Line_left -= 1;
60*10465441SEvalZero return (*str++ & 0377);
61*10465441SEvalZero }
62*10465441SEvalZero Line_left = 0;
63*10465441SEvalZero timeout/=5;
64*10465441SEvalZero while (1)
65*10465441SEvalZero {
66*10465441SEvalZero Line_left = rt_device_read(shell->device, 0, buf, 1);
67*10465441SEvalZero if (Line_left)
68*10465441SEvalZero {
69*10465441SEvalZero Line_left = Line_left;
70*10465441SEvalZero str = buf;
71*10465441SEvalZero break;
72*10465441SEvalZero }
73*10465441SEvalZero }
74*10465441SEvalZero if (Line_left < 1) return TIMEOUT;
75*10465441SEvalZero Line_left -=1;
76*10465441SEvalZero
77*10465441SEvalZero return (*str++ & 0377);
78*10465441SEvalZero }
79*10465441SEvalZero
80*10465441SEvalZero /*
81*10465441SEvalZero * send a string to the modem, processing for \336 (sleep 1 sec)
82*10465441SEvalZero * and \335 (break signal)
83*10465441SEvalZero */
zsend_break(char * cmd)84*10465441SEvalZero void zsend_break(char *cmd)
85*10465441SEvalZero {
86*10465441SEvalZero
87*10465441SEvalZero while (*cmd++)
88*10465441SEvalZero {
89*10465441SEvalZero switch (*cmd)
90*10465441SEvalZero {
91*10465441SEvalZero case '\336':
92*10465441SEvalZero continue;
93*10465441SEvalZero case '\335':
94*10465441SEvalZero rt_thread_delay(RT_TICK_PER_SECOND);
95*10465441SEvalZero continue;
96*10465441SEvalZero default:
97*10465441SEvalZero zsend_line(*cmd);
98*10465441SEvalZero break;
99*10465441SEvalZero }
100*10465441SEvalZero }
101*10465441SEvalZero }
102*10465441SEvalZero /* send cancel string to get the other end to shut up */
zsend_can(void)103*10465441SEvalZero void zsend_can(void)
104*10465441SEvalZero {
105*10465441SEvalZero static char cmd[] = {24,24,24,24,24,24,24,24,24,24,0};
106*10465441SEvalZero
107*10465441SEvalZero zsend_break(cmd);
108*10465441SEvalZero rt_kprintf("\x0d");
109*10465441SEvalZero Line_left=0; /* clear Line_left */
110*10465441SEvalZero
111*10465441SEvalZero return;
112*10465441SEvalZero }
113*10465441SEvalZero
114*10465441SEvalZero /* end of zdevice.c */
115