Pratyush Mallick / Mbed OS nano_dac

this is testing

noos_mbed/libraries/iio/libtinyiiod/parser.c@0:e8a1ba50c46b, 2021-01-14 (annotated)

Committer:
pmallick
Date:
Thu Jan 14 19:12:57 2021 +0530
Revision:
0:e8a1ba50c46b
this is testing

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pmallick 0:e8a1ba50c46b 1 /*
pmallick 0:e8a1ba50c46b 2 * libtinyiiod - Tiny IIO Daemon Library
pmallick 0:e8a1ba50c46b 3 *
pmallick 0:e8a1ba50c46b 4 * Copyright (C) 2016 Analog Devices, Inc.
pmallick 0:e8a1ba50c46b 5 * Author: Paul Cercueil <paul.cercueil@analog.com>
pmallick 0:e8a1ba50c46b 6 *
pmallick 0:e8a1ba50c46b 7 * This library is free software; you can redistribute it and/or
pmallick 0:e8a1ba50c46b 8 * modify it under the terms of the GNU Lesser General Public
pmallick 0:e8a1ba50c46b 9 * License as published by the Free Software Foundation; either
pmallick 0:e8a1ba50c46b 10 * version 2.1 of the License, or (at your option) any later version.
pmallick 0:e8a1ba50c46b 11 *
pmallick 0:e8a1ba50c46b 12 * This library is distributed in the hope that it will be useful,
pmallick 0:e8a1ba50c46b 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
pmallick 0:e8a1ba50c46b 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
pmallick 0:e8a1ba50c46b 15 * Lesser General Public License for more details.
pmallick 0:e8a1ba50c46b 16 */
pmallick 0:e8a1ba50c46b 17
pmallick 0:e8a1ba50c46b 18 #include "tinyiiod-private.h"
pmallick 0:e8a1ba50c46b 19
pmallick 0:e8a1ba50c46b 20 #include "compat.h"
pmallick 0:e8a1ba50c46b 21
pmallick 0:e8a1ba50c46b 22 static int32_t parse_rw_string(struct tinyiiod *iiod, char *str, bool write)
pmallick 0:e8a1ba50c46b 23 {
pmallick 0:e8a1ba50c46b 24 char *device, *channel, *attr, *ptr;
pmallick 0:e8a1ba50c46b 25 bool is_channel = false, output = false;
pmallick 0:e8a1ba50c46b 26 enum iio_attr_type type = IIO_ATTR_TYPE_DEVICE;
pmallick 0:e8a1ba50c46b 27 long bytes;
pmallick 0:e8a1ba50c46b 28
pmallick 0:e8a1ba50c46b 29 ptr = strchr(str, ' ');
pmallick 0:e8a1ba50c46b 30 if (!ptr)
pmallick 0:e8a1ba50c46b 31 return -EINVAL;
pmallick 0:e8a1ba50c46b 32
pmallick 0:e8a1ba50c46b 33 *ptr = '\0';
pmallick 0:e8a1ba50c46b 34 device = str;
pmallick 0:e8a1ba50c46b 35 str = ptr + 1;
pmallick 0:e8a1ba50c46b 36
pmallick 0:e8a1ba50c46b 37 if (!strncmp(str, "INPUT ", sizeof("INPUT ") - 1)) {
pmallick 0:e8a1ba50c46b 38 is_channel = true;
pmallick 0:e8a1ba50c46b 39 str += sizeof("INPUT ") - 1;
pmallick 0:e8a1ba50c46b 40 } else if (!strncmp(str, "OUTPUT ", sizeof("OUTPUT ") - 1)) {
pmallick 0:e8a1ba50c46b 41 is_channel = true;
pmallick 0:e8a1ba50c46b 42 output = true;
pmallick 0:e8a1ba50c46b 43 str += sizeof("OUTPUT ") - 1;
pmallick 0:e8a1ba50c46b 44 } else if (!strncmp(str, "DEBUG ", sizeof("DEBUG ") - 1)) {
pmallick 0:e8a1ba50c46b 45 type = IIO_ATTR_TYPE_DEBUG;
pmallick 0:e8a1ba50c46b 46 str += sizeof("DEBUG ") - 1;
pmallick 0:e8a1ba50c46b 47 } else if (!strncmp(str, "BUFFER ", sizeof("BUFFER ") - 1)) {
pmallick 0:e8a1ba50c46b 48 type = IIO_ATTR_TYPE_BUFFER;
pmallick 0:e8a1ba50c46b 49 str += sizeof("BUFFER ") - 1;
pmallick 0:e8a1ba50c46b 50 }
pmallick 0:e8a1ba50c46b 51
pmallick 0:e8a1ba50c46b 52 if (is_channel) {
pmallick 0:e8a1ba50c46b 53 ptr = strchr(str, ' ');
pmallick 0:e8a1ba50c46b 54 if (!ptr)
pmallick 0:e8a1ba50c46b 55 return -EINVAL;
pmallick 0:e8a1ba50c46b 56
pmallick 0:e8a1ba50c46b 57 *ptr = '\0';
pmallick 0:e8a1ba50c46b 58 channel = str;
pmallick 0:e8a1ba50c46b 59 str = ptr + 1;
pmallick 0:e8a1ba50c46b 60 } else {
pmallick 0:e8a1ba50c46b 61 channel = NULL;
pmallick 0:e8a1ba50c46b 62 }
pmallick 0:e8a1ba50c46b 63
pmallick 0:e8a1ba50c46b 64 ptr = strchr(str, ' ');
pmallick 0:e8a1ba50c46b 65 if ((!!ptr) ^ write)
pmallick 0:e8a1ba50c46b 66 return -EINVAL;
pmallick 0:e8a1ba50c46b 67
pmallick 0:e8a1ba50c46b 68 attr = str;
pmallick 0:e8a1ba50c46b 69
pmallick 0:e8a1ba50c46b 70 if (write) {
pmallick 0:e8a1ba50c46b 71 *ptr = '\0';
pmallick 0:e8a1ba50c46b 72 str = ptr + 1;
pmallick 0:e8a1ba50c46b 73 } else {
pmallick 0:e8a1ba50c46b 74 tinyiiod_do_read_attr(iiod, device, channel,
pmallick 0:e8a1ba50c46b 75 output, attr, type);
pmallick 0:e8a1ba50c46b 76 return 0;
pmallick 0:e8a1ba50c46b 77 }
pmallick 0:e8a1ba50c46b 78
pmallick 0:e8a1ba50c46b 79 bytes = strtol(str, &ptr, 10);
pmallick 0:e8a1ba50c46b 80 if (str == ptr || bytes < 0)
pmallick 0:e8a1ba50c46b 81 return -EINVAL;
pmallick 0:e8a1ba50c46b 82
pmallick 0:e8a1ba50c46b 83 tinyiiod_do_write_attr(iiod, device, channel,
pmallick 0:e8a1ba50c46b 84 output, attr, (size_t) bytes, type);
pmallick 0:e8a1ba50c46b 85
pmallick 0:e8a1ba50c46b 86 return 0;
pmallick 0:e8a1ba50c46b 87 }
pmallick 0:e8a1ba50c46b 88
pmallick 0:e8a1ba50c46b 89 static int32_t parse_open_string(struct tinyiiod *iiod, char *str)
pmallick 0:e8a1ba50c46b 90 {
pmallick 0:e8a1ba50c46b 91 char *device, *ptr;
pmallick 0:e8a1ba50c46b 92 long samples_count;
pmallick 0:e8a1ba50c46b 93 uint32_t mask = 0;
pmallick 0:e8a1ba50c46b 94
pmallick 0:e8a1ba50c46b 95 ptr = strchr(str, ' ');
pmallick 0:e8a1ba50c46b 96 if (!ptr)
pmallick 0:e8a1ba50c46b 97 return -EINVAL;
pmallick 0:e8a1ba50c46b 98
pmallick 0:e8a1ba50c46b 99 *ptr = '\0';
pmallick 0:e8a1ba50c46b 100 device = str;
pmallick 0:e8a1ba50c46b 101 str = ptr + 1;
pmallick 0:e8a1ba50c46b 102
pmallick 0:e8a1ba50c46b 103 samples_count = strtol(str, &ptr, 10);
pmallick 0:e8a1ba50c46b 104 if (str == ptr || *ptr != ' ' || samples_count < 0)
pmallick 0:e8a1ba50c46b 105 return -EINVAL;
pmallick 0:e8a1ba50c46b 106
pmallick 0:e8a1ba50c46b 107 str = ptr + 1;
pmallick 0:e8a1ba50c46b 108
pmallick 0:e8a1ba50c46b 109 mask = strtoul(str, NULL, 16);
pmallick 0:e8a1ba50c46b 110
pmallick 0:e8a1ba50c46b 111 tinyiiod_do_open(iiod, device, (size_t) samples_count, mask);
pmallick 0:e8a1ba50c46b 112
pmallick 0:e8a1ba50c46b 113 return 0;
pmallick 0:e8a1ba50c46b 114 }
pmallick 0:e8a1ba50c46b 115
pmallick 0:e8a1ba50c46b 116 static int32_t parse_timeout_string(struct tinyiiod *iiod, char *str)
pmallick 0:e8a1ba50c46b 117 {
pmallick 0:e8a1ba50c46b 118 uint32_t timeout = strtoul(str, NULL, 10);
pmallick 0:e8a1ba50c46b 119
pmallick 0:e8a1ba50c46b 120 return tinyiiod_set_timeout(iiod, timeout);
pmallick 0:e8a1ba50c46b 121 }
pmallick 0:e8a1ba50c46b 122
pmallick 0:e8a1ba50c46b 123 static int32_t parse_writebuf_string(struct tinyiiod *iiod, char *str)
pmallick 0:e8a1ba50c46b 124 {
pmallick 0:e8a1ba50c46b 125 char *device, *ptr;
pmallick 0:e8a1ba50c46b 126 long bytes_count;
pmallick 0:e8a1ba50c46b 127
pmallick 0:e8a1ba50c46b 128 ptr = strchr(str, ' ');
pmallick 0:e8a1ba50c46b 129 if (!ptr)
pmallick 0:e8a1ba50c46b 130 return -EINVAL;
pmallick 0:e8a1ba50c46b 131
pmallick 0:e8a1ba50c46b 132 *ptr = '\0';
pmallick 0:e8a1ba50c46b 133 device = str;
pmallick 0:e8a1ba50c46b 134 str = ptr + 1;
pmallick 0:e8a1ba50c46b 135
pmallick 0:e8a1ba50c46b 136 bytes_count = strtol(str, &ptr, 10);
pmallick 0:e8a1ba50c46b 137 if (str == ptr || *ptr != '\0' || bytes_count < 0)
pmallick 0:e8a1ba50c46b 138 return -EINVAL;
pmallick 0:e8a1ba50c46b 139
pmallick 0:e8a1ba50c46b 140 return tinyiiod_do_writebuf(iiod, device, (size_t) bytes_count);
pmallick 0:e8a1ba50c46b 141 }
pmallick 0:e8a1ba50c46b 142
pmallick 0:e8a1ba50c46b 143 static int32_t parse_readbuf_string(struct tinyiiod *iiod, char *str)
pmallick 0:e8a1ba50c46b 144 {
pmallick 0:e8a1ba50c46b 145 char *device, *ptr;
pmallick 0:e8a1ba50c46b 146 long bytes_count;
pmallick 0:e8a1ba50c46b 147
pmallick 0:e8a1ba50c46b 148 ptr = strchr(str, ' ');
pmallick 0:e8a1ba50c46b 149 if (!ptr)
pmallick 0:e8a1ba50c46b 150 return -EINVAL;
pmallick 0:e8a1ba50c46b 151
pmallick 0:e8a1ba50c46b 152 *ptr = '\0';
pmallick 0:e8a1ba50c46b 153 device = str;
pmallick 0:e8a1ba50c46b 154 str = ptr + 1;
pmallick 0:e8a1ba50c46b 155
pmallick 0:e8a1ba50c46b 156 bytes_count = strtol(str, &ptr, 10);
pmallick 0:e8a1ba50c46b 157 if (str == ptr || *ptr != '\0' || bytes_count < 0)
pmallick 0:e8a1ba50c46b 158 return -EINVAL;
pmallick 0:e8a1ba50c46b 159
pmallick 0:e8a1ba50c46b 160 return tinyiiod_do_readbuf(iiod, device, (size_t) bytes_count);
pmallick 0:e8a1ba50c46b 161 }
pmallick 0:e8a1ba50c46b 162
pmallick 0:e8a1ba50c46b 163 int32_t tinyiiod_parse_string(struct tinyiiod *iiod, char *str)
pmallick 0:e8a1ba50c46b 164 {
pmallick 0:e8a1ba50c46b 165 while (*str == '\n' || *str == '\r')
pmallick 0:e8a1ba50c46b 166 str++;
pmallick 0:e8a1ba50c46b 167
pmallick 0:e8a1ba50c46b 168 if (str[0] == '\0')
pmallick 0:e8a1ba50c46b 169 return 0;
pmallick 0:e8a1ba50c46b 170
pmallick 0:e8a1ba50c46b 171 if (!strncmp(str, "VERSION", sizeof("VERSION"))) {
pmallick 0:e8a1ba50c46b 172 char buf[32];
pmallick 0:e8a1ba50c46b 173
pmallick 0:e8a1ba50c46b 174 snprintf(buf, sizeof(buf), "%"PRIu16".%"PRIu16".%07x\n",
pmallick 0:e8a1ba50c46b 175 TINYIIOD_VERSION_MAJOR,
pmallick 0:e8a1ba50c46b 176 TINYIIOD_VERSION_MINOR,
pmallick 0:e8a1ba50c46b 177 TINYIIOD_VERSION_GIT);
pmallick 0:e8a1ba50c46b 178 tinyiiod_write_string(iiod, buf);
pmallick 0:e8a1ba50c46b 179 return 0;
pmallick 0:e8a1ba50c46b 180 }
pmallick 0:e8a1ba50c46b 181
pmallick 0:e8a1ba50c46b 182 if (!strncmp(str, "PRINT", sizeof("PRINT"))) {
pmallick 0:e8a1ba50c46b 183 tinyiiod_write_xml(iiod);
pmallick 0:e8a1ba50c46b 184 return 0;
pmallick 0:e8a1ba50c46b 185 }
pmallick 0:e8a1ba50c46b 186
pmallick 0:e8a1ba50c46b 187 if (!strncmp(str, "READ ", sizeof("READ ") - 1))
pmallick 0:e8a1ba50c46b 188 return parse_rw_string(iiod, str + sizeof("READ ") - 1, false);
pmallick 0:e8a1ba50c46b 189
pmallick 0:e8a1ba50c46b 190 if (!strncmp(str, "WRITE ", sizeof("WRITE ") -1))
pmallick 0:e8a1ba50c46b 191 return parse_rw_string(iiod, str + sizeof("WRITE ") - 1, true);
pmallick 0:e8a1ba50c46b 192
pmallick 0:e8a1ba50c46b 193 if (!strncmp(str, "OPEN ", sizeof("OPEN ") -1))
pmallick 0:e8a1ba50c46b 194 return parse_open_string(iiod, str + sizeof("OPEN ") - 1);
pmallick 0:e8a1ba50c46b 195
pmallick 0:e8a1ba50c46b 196 if (!strncmp(str, "CLOSE ", sizeof("CLOSE ") -1)) {
pmallick 0:e8a1ba50c46b 197 tinyiiod_do_close(iiod, str + sizeof("CLOSE ") - 1);
pmallick 0:e8a1ba50c46b 198 return 0;
pmallick 0:e8a1ba50c46b 199 }
pmallick 0:e8a1ba50c46b 200
pmallick 0:e8a1ba50c46b 201 if (!strncmp(str, "READBUF ", sizeof("READBUF ") -1))
pmallick 0:e8a1ba50c46b 202 return parse_readbuf_string(iiod, str + sizeof("READBUF ") - 1);
pmallick 0:e8a1ba50c46b 203
pmallick 0:e8a1ba50c46b 204 if (!strncmp(str, "TIMEOUT ", sizeof("TIMEOUT ") - 1))
pmallick 0:e8a1ba50c46b 205 return parse_timeout_string(iiod, str + sizeof("TIMEOUT ") - 1);
pmallick 0:e8a1ba50c46b 206
pmallick 0:e8a1ba50c46b 207 if (!strncmp(str, "WRITEBUF ", sizeof("WRITEBUF ") -1))
pmallick 0:e8a1ba50c46b 208 return parse_writebuf_string(iiod, str + sizeof("WRITEBUF ") - 1);
pmallick 0:e8a1ba50c46b 209
pmallick 0:e8a1ba50c46b 210 if (!strncmp(str, "EXIT", sizeof("EXIT") - 1))
pmallick 0:e8a1ba50c46b 211 return tinyiiod_do_close_instance(iiod);
pmallick 0:e8a1ba50c46b 212
pmallick 0:e8a1ba50c46b 213 if (!strncmp(str, "GETTRIG", sizeof("GETTRIG") - 1))
pmallick 0:e8a1ba50c46b 214 return tinyiiod_write_value(iiod, -ENODEV);
pmallick 0:e8a1ba50c46b 215
pmallick 0:e8a1ba50c46b 216 return -EINVAL;
pmallick 0:e8a1ba50c46b 217 }