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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 | ||
9380ec2f UH |
39 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
40 | { | |
41 | return std_init(sr_ctx, di, LOG_PREFIX); | |
42 | } | |
43 | ||
44 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
45 | { | |
607dcdea UH |
46 | struct scale_info *scale; |
47 | struct sr_config *src; | |
48 | GSList *l, *devices; | |
49 | const char *conn, *serialcomm; | |
50 | struct sr_dev_inst *sdi; | |
9380ec2f | 51 | struct drv_context *drvc; |
607dcdea UH |
52 | struct dev_context *devc; |
53 | struct sr_serial_dev_inst *serial; | |
54 | int ret; | |
55 | size_t len; | |
56 | uint8_t buf[128]; | |
57 | ||
58 | scale = (struct scale_info *)di; | |
59 | ||
60 | conn = serialcomm = NULL; | |
61 | for (l = options; l; l = l->next) { | |
62 | src = l->data; | |
63 | switch (src->key) { | |
64 | case SR_CONF_CONN: | |
65 | conn = g_variant_get_string(src->data, NULL); | |
66 | break; | |
67 | case SR_CONF_SERIALCOMM: | |
68 | serialcomm = g_variant_get_string(src->data, NULL); | |
69 | break; | |
70 | } | |
71 | } | |
72 | if (!conn) | |
73 | return NULL; | |
9380ec2f | 74 | |
607dcdea UH |
75 | if (!serialcomm) |
76 | serialcomm = scale->conn; | |
9380ec2f | 77 | |
607dcdea | 78 | serial = sr_serial_dev_inst_new(conn, serialcomm); |
9380ec2f | 79 | |
607dcdea UH |
80 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) |
81 | return NULL; | |
9380ec2f | 82 | |
607dcdea | 83 | sr_info("Probing serial port %s.", conn); |
9380ec2f | 84 | |
607dcdea UH |
85 | drvc = di->context; |
86 | devices = NULL; | |
87 | serial_flush(serial); | |
9380ec2f | 88 | |
607dcdea UH |
89 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); |
90 | if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4) | |
91 | goto scan_cleanup; | |
92 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
9380ec2f | 93 | |
607dcdea UH |
94 | /* Let's get a bit of data and see if we can find a packet. */ |
95 | len = sizeof(buf); | |
96 | ret = serial_stream_detect(serial, buf, &len, scale->packet_size, | |
97 | scale->packet_valid, 3000, scale->baudrate); | |
98 | if (ret != SR_OK) | |
99 | goto scan_cleanup; | |
9380ec2f | 100 | |
607dcdea | 101 | sr_info("Found device on port %s.", conn); |
9380ec2f | 102 | |
607dcdea | 103 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
9380ec2f | 104 | sdi->status = SR_ST_INACTIVE; |
607dcdea UH |
105 | sdi->vendor = g_strdup(scale->vendor); |
106 | sdi->model = g_strdup(scale->device); | |
107 | devc = g_malloc0(sizeof(struct dev_context)); | |
108 | sdi->inst_type = SR_INST_SERIAL; | |
109 | sdi->conn = serial; | |
110 | sdi->priv = devc; | |
111 | sdi->driver = di; | |
112 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass"); | |
113 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
114 | devices = g_slist_append(devices, sdi); | |
115 | ||
116 | scan_cleanup: | |
117 | serial_close(serial); | |
9380ec2f | 118 | |
607dcdea | 119 | return devices; |
9380ec2f UH |
120 | } |
121 | ||
9380ec2f UH |
122 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
123 | const struct sr_channel_group *cg) | |
124 | { | |
607dcdea | 125 | struct dev_context *devc; |
9380ec2f | 126 | |
9380ec2f UH |
127 | (void)cg; |
128 | ||
129 | if (sdi->status != SR_ST_ACTIVE) | |
130 | return SR_ERR_DEV_CLOSED; | |
131 | ||
607dcdea UH |
132 | if (!(devc = sdi->priv)) |
133 | return SR_ERR_BUG; | |
134 | ||
9380ec2f | 135 | switch (key) { |
607dcdea UH |
136 | case SR_CONF_LIMIT_SAMPLES: |
137 | devc->limit_samples = g_variant_get_uint64(data); | |
138 | break; | |
139 | case SR_CONF_LIMIT_MSEC: | |
140 | devc->limit_msec = g_variant_get_uint64(data); | |
141 | break; | |
9380ec2f | 142 | default: |
607dcdea | 143 | return SR_ERR_NA; |
9380ec2f UH |
144 | } |
145 | ||
607dcdea | 146 | return SR_OK; |
9380ec2f UH |
147 | } |
148 | ||
149 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
150 | const struct sr_channel_group *cg) | |
151 | { | |
9380ec2f | 152 | (void)sdi; |
9380ec2f UH |
153 | (void)cg; |
154 | ||
9380ec2f | 155 | switch (key) { |
607dcdea UH |
156 | case SR_CONF_SCAN_OPTIONS: |
157 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
158 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
159 | break; | |
160 | case SR_CONF_DEVICE_OPTIONS: | |
161 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
162 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
163 | break; | |
9380ec2f UH |
164 | default: |
165 | return SR_ERR_NA; | |
166 | } | |
167 | ||
607dcdea | 168 | return SR_OK; |
9380ec2f UH |
169 | } |
170 | ||
695dc859 | 171 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
9380ec2f | 172 | { |
607dcdea UH |
173 | struct dev_context *devc; |
174 | struct sr_serial_dev_inst *serial; | |
9380ec2f UH |
175 | |
176 | if (sdi->status != SR_ST_ACTIVE) | |
177 | return SR_ERR_DEV_CLOSED; | |
178 | ||
208c1d35 | 179 | devc = sdi->priv; |
607dcdea UH |
180 | serial = sdi->conn; |
181 | ||
182 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); | |
183 | if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4) | |
184 | return SR_ERR; | |
185 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
186 | ||
187 | devc->num_samples = 0; | |
188 | devc->starttime = g_get_monotonic_time(); | |
189 | ||
695dc859 | 190 | std_session_send_df_header(sdi, LOG_PREFIX); |
607dcdea UH |
191 | |
192 | /* Poll every 50ms, or whenever some data comes in. */ | |
193 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
194 | kern_scale_receive_data, (void *)sdi); | |
195 | ||
9380ec2f UH |
196 | return SR_OK; |
197 | } | |
198 | ||
695dc859 | 199 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
9380ec2f | 200 | { |
6525d819 | 201 | return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close, |
607dcdea UH |
202 | sdi->conn, LOG_PREFIX); |
203 | } | |
9380ec2f | 204 | |
607dcdea UH |
205 | #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \ |
206 | VALID, PARSE) \ | |
207 | &(struct scale_info) { \ | |
208 | { \ | |
209 | .name = ID, \ | |
210 | .longname = VENDOR " " MODEL, \ | |
211 | .api_version = 1, \ | |
212 | .init = init, \ | |
700d6b64 | 213 | .cleanup = std_cleanup, \ |
607dcdea | 214 | .scan = scan, \ |
c01bf34c | 215 | .dev_list = std_dev_list, \ |
607dcdea UH |
216 | .config_get = NULL, \ |
217 | .config_set = config_set, \ | |
218 | .config_list = config_list, \ | |
219 | .dev_open = std_serial_dev_open, \ | |
220 | .dev_close = std_serial_dev_close, \ | |
221 | .dev_acquisition_start = dev_acquisition_start, \ | |
222 | .dev_acquisition_stop = dev_acquisition_stop, \ | |
223 | .context = NULL, \ | |
224 | }, \ | |
225 | VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \ | |
226 | VALID, PARSE, sizeof(struct CHIPSET##_info) \ | |
227 | } | |
9380ec2f | 228 | |
607dcdea UH |
229 | /* |
230 | * Some scales have (user-configurable) 14-byte or 15-byte packets. | |
231 | * We transparently support both variants by specifying the larger value | |
232 | * below and due to the way the stream parser works. | |
233 | * | |
234 | * The scales have a standard baudrate (model dependent) as listed below, | |
235 | * but serial parameters are user-configurable. We support that by letting | |
236 | * the user override them via "serialcomm". | |
237 | */ | |
9380ec2f | 238 | |
607dcdea UH |
239 | SR_PRIV const struct scale_info *kern_scale_drivers[] = { |
240 | SCALE( | |
241 | "kern-ew-6200-2nm", kern, | |
242 | "KERN", "EW 6200-2NM", "1200/8n2", 1200, | |
243 | 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse | |
244 | ), | |
245 | NULL | |
9380ec2f | 246 | }; |