/
serial.c
245 lines (221 loc) · 6.18 KB
/
serial.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
/*==============================================================================
** serial.c -- DfewOS serial communicate routines.
**
** MODIFY HISTORY:
**
** 2012-03-02 wdf Create.
==============================================================================*/
#include "types.h"
#include "config.h"
#include "dlist.h"
#include "task.h"
#include "semM.h"
#include "bsp/uart.h"
/*======================================================================
FIFO lock
======================================================================*/
#if 0
static SEM_MUX _G_serial_semM;
#define SERIAL_FIFO_LOCK_INIT() semM_init(&_G_serial_semM)
#define SERIAL_FIFO_LOCK() semM_take(&_G_serial_semM, WAIT_FOREVER)
#define SERIAL_FIFO_UNLOCK() semM_give(&_G_serial_semM)
#else
#define SERIAL_FIFO_LOCK_INIT()
#define SERIAL_FIFO_LOCK()
#define SERIAL_FIFO_UNLOCK()
#endif
/*==============================================================================
* - serial_init()
*
* - init UART hardware
*/
int serial_init()
{
uart_init ();
SERIAL_FIFO_LOCK_INIT();
return 0;
}
/*==============================================================================
* - serial_getc()
*
* - get a char
*/
int serial_getc(void)
{
return uart_getc();
}
/*==============================================================================
* - serial_putc()
*
* - send a char
*/
int serial_putc(const char c)
{
return uart_putc(c);
}
/*==============================================================================
* - serial_tstc()
*
* - check whether have received char in FIFO
*/
int serial_tstc(void)
{
return uart_tstc ();
}
/*==============================================================================
* - serial_puts()
*
* - send a string
*/
int serial_puts(const char *s)
{
int i = 0;
SERIAL_FIFO_LOCK();
while (*s) {
serial_putc(*s++);
i++;
}
SERIAL_FIFO_UNLOCK();
return i;
}
/*==============================================================================
* - serial_pend()
*
* - wait some ticks for receive data
*/
int serial_pend (int ticks)
{
return uart_pend (ticks);
}
/*==============================================================================
* - serial_read()
*
* - try to receive <max> char from FIFO
*/
int serial_read (char *buf, int max)
{
int nbyte = 0;
if (serial_tstc() == 0)
uart_pend (WAIT_FOREVER);
SERIAL_FIFO_LOCK();
while ((uart_tstc() != 0) && (max-- != 0)) {
*buf++ = uart_getc();
nbyte++;
}
SERIAL_FIFO_UNLOCK();
return nbyte;
}
/*==============================================================================
* - serial_write()
*
* - send a buffer
*/
int serial_write (char *buf, int e_size, int e_num)
{
int i;
int max = e_size * e_num;
SERIAL_FIFO_LOCK();
for (i = 0; i < max; i++) {
serial_putc(buf[i]);
}
SERIAL_FIFO_UNLOCK();
return i;
}
/**********************************************************************************************************
printf
**********************************************************************************************************/
#define f_putc(c, f) serial_putc(c)
#define f_puts(s, f) serial_puts(s)
#define ULONG unsigned long
#define UCHAR unsigned char
#ifndef EOF
#define EOF -1
#endif
//#include <stdarg.h>
#include "string.h"
int serial_printf (const char* str, ... )
{
va_list arp;
UCHAR c, f, r;
ULONG val;
char s[16];
int i, w, res, cc;
va_start(arp, str);
SERIAL_FIFO_LOCK();
for (cc = res = 0; cc != EOF; res += cc) {
c = *str++;
if (c == 0) break; /* End of string */
if (c != '%') { /* Non escape cahracter */
cc = f_putc(c, fil);
if (cc != EOF) cc = 1;
continue;
}
w = f = 0;
c = *str++;
if (c == '%') { /* print '%' _Dong */
cc = f_putc(c, fil);
continue;
}
if (c == '0') { /* Flag: '0' padding */
f = 1; c = *str++;
}
if (c == ' ') { /* Flag: ' ' padding _Dong */
c = *str++;
}
while (c >= '0' && c <= '9') {/* Precision */
w = w * 10 + (c - '0');
c = *str++;
}
if (c == 'l') { /* Prefix: Size is long int */
f |= 2; c = *str++;
if (c == 'l') {
f |= 8; c = *str++;
}
}
if (c == 's') { /* Type is string */
cc = f_puts(va_arg(arp, char*), fil);
continue;
}
if (c == 'c') { /* Type is character */
cc = f_putc(va_arg(arp, int), fil);
if (cc != EOF) cc = 1;
continue;
}
r = 0;
if (c == 'd') r = 10; /* Type is signed decimal */
if (c == 'u') r = 10; /* Type is unsigned decimal */
if (c == 'X' || c == 'x' || c == 'p') r = 16; /* Type is unsigned hexdecimal _Dong */
if (r == 0) break; /* Unknown type */
if (f & 8) { /* Get the value */
val = (ULONG long)va_arg(arp, long long);
} else if (f & 2) {
val = (ULONG)va_arg(arp, long);
} else {
val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
}
/* Put numeral string */
if (c == 'd') {
if (val & 0x80000000) {
val = 0 - val;
f |= 4;
}
}
i = sizeof(s) - 1; s[i] = 0;
do {
c = (UCHAR)(val % r + '0');
if (c > '9') c += 7;
s[--i] = c;
val /= r;
} while (i && val);
if (i && (f & 4)) s[--i] = '-';
w = sizeof(s) - 1 - w;
while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
cc = f_puts(&s[i], fil);
}
SERIAL_FIFO_UNLOCK();
va_end(arp);
return (cc == EOF) ? cc : res;
}
/*==============================================================================
** FILE END
==============================================================================*/