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
|
/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include "mpconfig.h"
#include "misc.h"
#include "qstr.h"
#include "misc.h"
#include "obj.h"
#include "stream.h"
#include MICROPY_HAL_H
#include "usb.h"
#include "uart.h"
#include "pybstdio.h"
// TODO make stdin, stdout and stderr writable objects so they can
// be changed by Python code. This requires some changes, as these
// objects are in a read-only module (py/modsys.c).
// stdio is repeated on this UART object if it's not null
pyb_uart_obj_t *pyb_stdio_uart = NULL;
void stdout_tx_str(const char *str) {
stdout_tx_strn(str, strlen(str));
}
void stdout_tx_strn(const char *str, mp_uint_t len) {
if (pyb_stdio_uart != PYB_UART_NONE) {
uart_tx_strn(pyb_stdio_uart, str, len);
}
#if 0 && defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD
lcd_print_strn(str, len);
#endif
if (usb_vcp_is_enabled()) {
usb_vcp_send_strn(str, len);
}
}
void stdout_tx_strn_cooked(const char *str, mp_uint_t len) {
// send stdout to UART and USB CDC VCP
if (pyb_stdio_uart != PYB_UART_NONE) {
uart_tx_strn_cooked(pyb_stdio_uart, str, len);
}
if (usb_vcp_is_enabled()) {
usb_vcp_send_strn_cooked(str, len);
}
}
int stdin_rx_chr(void) {
for (;;) {
#if 0
#ifdef USE_HOST_MODE
pyb_usb_host_process();
int c = pyb_usb_host_get_keyboard();
if (c != 0) {
return c;
}
#endif
#endif
byte c;
if (usb_vcp_recv_byte(&c) != 0) {
return c;
} else if (pyb_stdio_uart != PYB_UART_NONE && uart_rx_any(pyb_stdio_uart)) {
return uart_rx_char(pyb_stdio_uart);
}
__WFI();
}
}
/******************************************************************************/
// Micro Python bindings
#define STDIO_FD_IN (0)
#define STDIO_FD_OUT (1)
#define STDIO_FD_ERR (2)
typedef struct _pyb_stdio_obj_t {
mp_obj_base_t base;
int fd;
} pyb_stdio_obj_t;
void stdio_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
pyb_stdio_obj_t *self = self_in;
print(env, "<io.FileIO %d>", self->fd);
}
STATIC mp_uint_t stdio_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
pyb_stdio_obj_t *self = self_in;
if (self->fd == STDIO_FD_IN) {
for (uint i = 0; i < size; i++) {
int c = stdin_rx_chr();
if (c == '\r') {
c = '\n';
}
((byte*)buf)[i] = c;
}
return size;
} else {
*errcode = EPERM;
return MP_STREAM_ERROR;
}
}
STATIC mp_uint_t stdio_write(mp_obj_t self_in, const void *buf, mp_uint_t size, int *errcode) {
pyb_stdio_obj_t *self = self_in;
if (self->fd == STDIO_FD_OUT || self->fd == STDIO_FD_ERR) {
stdout_tx_strn_cooked(buf, size);
return size;
} else {
*errcode = EPERM;
return MP_STREAM_ERROR;
}
}
mp_obj_t stdio_obj___exit__(mp_uint_t n_args, const mp_obj_t *args) {
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(stdio_obj___exit___obj, 4, 4, stdio_obj___exit__);
// TODO gc hook to close the file if not already closed
STATIC const mp_map_elem_t stdio_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&mp_stream_read_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_readall), (mp_obj_t)&mp_stream_readall_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_readline), (mp_obj_t)&mp_stream_unbuffered_readline_obj},
{ MP_OBJ_NEW_QSTR(MP_QSTR_write), (mp_obj_t)&mp_stream_write_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&mp_identity_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&mp_identity_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR___enter__), (mp_obj_t)&mp_identity_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR___exit__), (mp_obj_t)&stdio_obj___exit___obj },
};
STATIC MP_DEFINE_CONST_DICT(stdio_locals_dict, stdio_locals_dict_table);
STATIC const mp_stream_p_t stdio_obj_stream_p = {
.read = stdio_read,
.write = stdio_write,
.is_text = true,
};
STATIC const mp_obj_type_t stdio_obj_type = {
{ &mp_type_type },
.name = MP_QSTR_FileIO,
// TODO .make_new?
.print = stdio_obj_print,
.getiter = mp_identity,
.iternext = mp_stream_unbuffered_iter,
.stream_p = &stdio_obj_stream_p,
.locals_dict = (mp_obj_t)&stdio_locals_dict,
};
/// \moduleref sys
/// \constant stdin - standard input (connected to USB VCP, and optional UART object)
/// \constant stdout - standard output (connected to USB VCP, and optional UART object)
/// \constant stderr - standard error (connected to USB VCP, and optional UART object)
const pyb_stdio_obj_t mp_sys_stdin_obj = {{&stdio_obj_type}, .fd = STDIO_FD_IN};
const pyb_stdio_obj_t mp_sys_stdout_obj = {{&stdio_obj_type}, .fd = STDIO_FD_OUT};
const pyb_stdio_obj_t mp_sys_stderr_obj = {{&stdio_obj_type}, .fd = STDIO_FD_ERR};
|
