]>
Commit | Line | Data |
---|---|---|
9380ec2f UH |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
6ec6c43b | 21 | #include <config.h> |
607dcdea UH |
22 | #include <glib.h> |
23 | #include <libsigrok/libsigrok.h> | |
24 | #include "libsigrok-internal.h" | |
9380ec2f UH |
25 | #include "protocol.h" |
26 | ||
607dcdea UH |
27 | static const uint32_t scanopts[] = { |
28 | SR_CONF_CONN, | |
29 | SR_CONF_SERIALCOMM, | |
30 | }; | |
31 | ||
32 | static const uint32_t devopts[] = { | |
33 | SR_CONF_SCALE, | |
34 | SR_CONF_CONTINUOUS, | |
35 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
36 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
37 | }; | |
38 | ||
39 | static int dev_clear(const struct sr_dev_driver *di) | |
40 | { | |
41 | return std_dev_clear(di, NULL); | |
42 | } | |
9380ec2f UH |
43 | |
44 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
45 | { | |
46 | return std_init(sr_ctx, di, LOG_PREFIX); | |
47 | } | |
48 | ||
49 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
50 | { | |
607dcdea UH |
51 | struct scale_info *scale; |
52 | struct sr_config *src; | |
53 | GSList *l, *devices; | |
54 | const char *conn, *serialcomm; | |
55 | struct sr_dev_inst *sdi; | |
9380ec2f | 56 | struct drv_context *drvc; |
607dcdea UH |
57 | struct dev_context *devc; |
58 | struct sr_serial_dev_inst *serial; | |
59 | int ret; | |
60 | size_t len; | |
61 | uint8_t buf[128]; | |
62 | ||
63 | scale = (struct scale_info *)di; | |
64 | ||
65 | conn = serialcomm = NULL; | |
66 | for (l = options; l; l = l->next) { | |
67 | src = l->data; | |
68 | switch (src->key) { | |
69 | case SR_CONF_CONN: | |
70 | conn = g_variant_get_string(src->data, NULL); | |
71 | break; | |
72 | case SR_CONF_SERIALCOMM: | |
73 | serialcomm = g_variant_get_string(src->data, NULL); | |
74 | break; | |
75 | } | |
76 | } | |
77 | if (!conn) | |
78 | return NULL; | |
9380ec2f | 79 | |
607dcdea UH |
80 | if (!serialcomm) |
81 | serialcomm = scale->conn; | |
9380ec2f | 82 | |
607dcdea | 83 | serial = sr_serial_dev_inst_new(conn, serialcomm); |
9380ec2f | 84 | |
607dcdea UH |
85 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) |
86 | return NULL; | |
9380ec2f | 87 | |
607dcdea | 88 | sr_info("Probing serial port %s.", conn); |
9380ec2f | 89 | |
607dcdea UH |
90 | drvc = di->context; |
91 | devices = NULL; | |
92 | serial_flush(serial); | |
9380ec2f | 93 | |
607dcdea UH |
94 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); |
95 | if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4) | |
96 | goto scan_cleanup; | |
97 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
9380ec2f | 98 | |
607dcdea UH |
99 | /* Let's get a bit of data and see if we can find a packet. */ |
100 | len = sizeof(buf); | |
101 | ret = serial_stream_detect(serial, buf, &len, scale->packet_size, | |
102 | scale->packet_valid, 3000, scale->baudrate); | |
103 | if (ret != SR_OK) | |
104 | goto scan_cleanup; | |
9380ec2f | 105 | |
607dcdea | 106 | sr_info("Found device on port %s.", conn); |
9380ec2f | 107 | |
607dcdea | 108 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
9380ec2f | 109 | sdi->status = SR_ST_INACTIVE; |
607dcdea UH |
110 | sdi->vendor = g_strdup(scale->vendor); |
111 | sdi->model = g_strdup(scale->device); | |
112 | devc = g_malloc0(sizeof(struct dev_context)); | |
113 | sdi->inst_type = SR_INST_SERIAL; | |
114 | sdi->conn = serial; | |
115 | sdi->priv = devc; | |
116 | sdi->driver = di; | |
117 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass"); | |
118 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
119 | devices = g_slist_append(devices, sdi); | |
120 | ||
121 | scan_cleanup: | |
122 | serial_close(serial); | |
9380ec2f | 123 | |
607dcdea | 124 | return devices; |
9380ec2f UH |
125 | } |
126 | ||
607dcdea | 127 | static GSList *dev_list(const struct sr_dev_driver *di) |
9380ec2f | 128 | { |
607dcdea | 129 | return ((struct drv_context *)(di->context))->instances; |
9380ec2f UH |
130 | } |
131 | ||
607dcdea | 132 | static int cleanup(const struct sr_dev_driver *di) |
9380ec2f | 133 | { |
607dcdea | 134 | return dev_clear(di); |
9380ec2f UH |
135 | } |
136 | ||
137 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
138 | const struct sr_channel_group *cg) | |
139 | { | |
607dcdea | 140 | struct dev_context *devc; |
9380ec2f | 141 | |
9380ec2f UH |
142 | (void)cg; |
143 | ||
144 | if (sdi->status != SR_ST_ACTIVE) | |
145 | return SR_ERR_DEV_CLOSED; | |
146 | ||
607dcdea UH |
147 | if (!(devc = sdi->priv)) |
148 | return SR_ERR_BUG; | |
149 | ||
9380ec2f | 150 | switch (key) { |
607dcdea UH |
151 | case SR_CONF_LIMIT_SAMPLES: |
152 | devc->limit_samples = g_variant_get_uint64(data); | |
153 | break; | |
154 | case SR_CONF_LIMIT_MSEC: | |
155 | devc->limit_msec = g_variant_get_uint64(data); | |
156 | break; | |
9380ec2f | 157 | default: |
607dcdea | 158 | return SR_ERR_NA; |
9380ec2f UH |
159 | } |
160 | ||
607dcdea | 161 | return SR_OK; |
9380ec2f UH |
162 | } |
163 | ||
164 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
165 | const struct sr_channel_group *cg) | |
166 | { | |
9380ec2f | 167 | (void)sdi; |
9380ec2f UH |
168 | (void)cg; |
169 | ||
9380ec2f | 170 | switch (key) { |
607dcdea UH |
171 | case SR_CONF_SCAN_OPTIONS: |
172 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
173 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
174 | break; | |
175 | case SR_CONF_DEVICE_OPTIONS: | |
176 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
177 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
178 | break; | |
9380ec2f UH |
179 | default: |
180 | return SR_ERR_NA; | |
181 | } | |
182 | ||
607dcdea | 183 | return SR_OK; |
9380ec2f UH |
184 | } |
185 | ||
186 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
187 | { | |
607dcdea UH |
188 | struct dev_context *devc; |
189 | struct sr_serial_dev_inst *serial; | |
9380ec2f UH |
190 | |
191 | if (sdi->status != SR_ST_ACTIVE) | |
192 | return SR_ERR_DEV_CLOSED; | |
193 | ||
607dcdea UH |
194 | if (!(devc = sdi->priv)) |
195 | return SR_ERR_BUG; | |
196 | ||
197 | devc->cb_data = cb_data; | |
198 | ||
199 | serial = sdi->conn; | |
200 | ||
201 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); | |
202 | if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4) | |
203 | return SR_ERR; | |
204 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
205 | ||
206 | devc->num_samples = 0; | |
207 | devc->starttime = g_get_monotonic_time(); | |
208 | ||
209 | /* Send header packet to the session bus. */ | |
210 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
211 | ||
212 | /* Poll every 50ms, or whenever some data comes in. */ | |
213 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
214 | kern_scale_receive_data, (void *)sdi); | |
215 | ||
9380ec2f UH |
216 | return SR_OK; |
217 | } | |
218 | ||
219 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
220 | { | |
607dcdea UH |
221 | return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close, |
222 | sdi->conn, LOG_PREFIX); | |
223 | } | |
9380ec2f | 224 | |
607dcdea UH |
225 | #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \ |
226 | VALID, PARSE) \ | |
227 | &(struct scale_info) { \ | |
228 | { \ | |
229 | .name = ID, \ | |
230 | .longname = VENDOR " " MODEL, \ | |
231 | .api_version = 1, \ | |
232 | .init = init, \ | |
233 | .cleanup = cleanup, \ | |
234 | .scan = scan, \ | |
235 | .dev_list = dev_list, \ | |
236 | .dev_clear = dev_clear, \ | |
237 | .config_get = NULL, \ | |
238 | .config_set = config_set, \ | |
239 | .config_list = config_list, \ | |
240 | .dev_open = std_serial_dev_open, \ | |
241 | .dev_close = std_serial_dev_close, \ | |
242 | .dev_acquisition_start = dev_acquisition_start, \ | |
243 | .dev_acquisition_stop = dev_acquisition_stop, \ | |
244 | .context = NULL, \ | |
245 | }, \ | |
246 | VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \ | |
247 | VALID, PARSE, sizeof(struct CHIPSET##_info) \ | |
248 | } | |
9380ec2f | 249 | |
607dcdea UH |
250 | /* |
251 | * Some scales have (user-configurable) 14-byte or 15-byte packets. | |
252 | * We transparently support both variants by specifying the larger value | |
253 | * below and due to the way the stream parser works. | |
254 | * | |
255 | * The scales have a standard baudrate (model dependent) as listed below, | |
256 | * but serial parameters are user-configurable. We support that by letting | |
257 | * the user override them via "serialcomm". | |
258 | */ | |
9380ec2f | 259 | |
607dcdea UH |
260 | SR_PRIV const struct scale_info *kern_scale_drivers[] = { |
261 | SCALE( | |
262 | "kern-ew-6200-2nm", kern, | |
263 | "KERN", "EW 6200-2NM", "1200/8n2", 1200, | |
264 | 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse | |
265 | ), | |
266 | NULL | |
9380ec2f | 267 | }; |