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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 | |
2ea1fdf1 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
9380ec2f UH |
18 | */ |
19 | ||
6ec6c43b | 20 | #include <config.h> |
607dcdea UH |
21 | #include <glib.h> |
22 | #include <libsigrok/libsigrok.h> | |
23 | #include "libsigrok-internal.h" | |
9380ec2f UH |
24 | #include "protocol.h" |
25 | ||
607dcdea UH |
26 | static const uint32_t scanopts[] = { |
27 | SR_CONF_CONN, | |
28 | SR_CONF_SERIALCOMM, | |
29 | }; | |
30 | ||
31 | static const uint32_t devopts[] = { | |
32 | SR_CONF_SCALE, | |
33 | SR_CONF_CONTINUOUS, | |
34 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
35 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
36 | }; | |
37 | ||
9380ec2f UH |
38 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
39 | { | |
607dcdea UH |
40 | struct scale_info *scale; |
41 | struct sr_config *src; | |
42 | GSList *l, *devices; | |
43 | const char *conn, *serialcomm; | |
44 | struct sr_dev_inst *sdi; | |
607dcdea UH |
45 | struct dev_context *devc; |
46 | struct sr_serial_dev_inst *serial; | |
47 | int ret; | |
48 | size_t len; | |
49 | uint8_t buf[128]; | |
50 | ||
51 | scale = (struct scale_info *)di; | |
52 | ||
53 | conn = serialcomm = NULL; | |
54 | for (l = options; l; l = l->next) { | |
55 | src = l->data; | |
56 | switch (src->key) { | |
57 | case SR_CONF_CONN: | |
58 | conn = g_variant_get_string(src->data, NULL); | |
59 | break; | |
60 | case SR_CONF_SERIALCOMM: | |
61 | serialcomm = g_variant_get_string(src->data, NULL); | |
62 | break; | |
63 | } | |
64 | } | |
65 | if (!conn) | |
66 | return NULL; | |
9380ec2f | 67 | |
607dcdea UH |
68 | if (!serialcomm) |
69 | serialcomm = scale->conn; | |
9380ec2f | 70 | |
607dcdea | 71 | serial = sr_serial_dev_inst_new(conn, serialcomm); |
9380ec2f | 72 | |
607dcdea UH |
73 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) |
74 | return NULL; | |
9380ec2f | 75 | |
607dcdea | 76 | sr_info("Probing serial port %s.", conn); |
9380ec2f | 77 | |
607dcdea UH |
78 | devices = NULL; |
79 | serial_flush(serial); | |
9380ec2f | 80 | |
607dcdea UH |
81 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); |
82 | if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4) | |
83 | goto scan_cleanup; | |
84 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
9380ec2f | 85 | |
607dcdea UH |
86 | /* Let's get a bit of data and see if we can find a packet. */ |
87 | len = sizeof(buf); | |
88 | ret = serial_stream_detect(serial, buf, &len, scale->packet_size, | |
89 | scale->packet_valid, 3000, scale->baudrate); | |
90 | if (ret != SR_OK) | |
91 | goto scan_cleanup; | |
9380ec2f | 92 | |
607dcdea | 93 | sr_info("Found device on port %s.", conn); |
9380ec2f | 94 | |
607dcdea | 95 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
9380ec2f | 96 | sdi->status = SR_ST_INACTIVE; |
607dcdea UH |
97 | sdi->vendor = g_strdup(scale->vendor); |
98 | sdi->model = g_strdup(scale->device); | |
99 | devc = g_malloc0(sizeof(struct dev_context)); | |
7fc9dc31 | 100 | sr_sw_limits_init(&devc->limits); |
607dcdea UH |
101 | sdi->inst_type = SR_INST_SERIAL; |
102 | sdi->conn = serial; | |
103 | sdi->priv = devc; | |
607dcdea | 104 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass"); |
607dcdea UH |
105 | devices = g_slist_append(devices, sdi); |
106 | ||
107 | scan_cleanup: | |
108 | serial_close(serial); | |
9380ec2f | 109 | |
15a5bfe4 | 110 | return std_scan_complete(di, devices); |
9380ec2f UH |
111 | } |
112 | ||
9380ec2f UH |
113 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
114 | const struct sr_channel_group *cg) | |
115 | { | |
607dcdea | 116 | struct dev_context *devc; |
9380ec2f | 117 | |
9380ec2f UH |
118 | (void)cg; |
119 | ||
b0baddef | 120 | devc = sdi->priv; |
607dcdea | 121 | |
7fc9dc31 | 122 | return sr_sw_limits_config_set(&devc->limits, key, data); |
9380ec2f UH |
123 | } |
124 | ||
125 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
126 | const struct sr_channel_group *cg) | |
127 | { | |
9380ec2f | 128 | (void)sdi; |
9380ec2f UH |
129 | (void)cg; |
130 | ||
9380ec2f | 131 | switch (key) { |
607dcdea UH |
132 | case SR_CONF_SCAN_OPTIONS: |
133 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
134 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
135 | break; | |
136 | case SR_CONF_DEVICE_OPTIONS: | |
137 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
138 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
139 | break; | |
9380ec2f UH |
140 | default: |
141 | return SR_ERR_NA; | |
142 | } | |
143 | ||
607dcdea | 144 | return SR_OK; |
9380ec2f UH |
145 | } |
146 | ||
695dc859 | 147 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
9380ec2f | 148 | { |
607dcdea UH |
149 | struct dev_context *devc; |
150 | struct sr_serial_dev_inst *serial; | |
9380ec2f | 151 | |
208c1d35 | 152 | devc = sdi->priv; |
607dcdea UH |
153 | serial = sdi->conn; |
154 | ||
155 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); | |
156 | if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4) | |
157 | return SR_ERR; | |
158 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
159 | ||
7fc9dc31 | 160 | sr_sw_limits_acquisition_start(&devc->limits); |
bee2b016 | 161 | std_session_send_df_header(sdi); |
607dcdea UH |
162 | |
163 | /* Poll every 50ms, or whenever some data comes in. */ | |
164 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
165 | kern_scale_receive_data, (void *)sdi); | |
166 | ||
9380ec2f UH |
167 | return SR_OK; |
168 | } | |
169 | ||
607dcdea UH |
170 | #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \ |
171 | VALID, PARSE) \ | |
dd5c48a6 | 172 | &((struct scale_info) { \ |
607dcdea UH |
173 | { \ |
174 | .name = ID, \ | |
175 | .longname = VENDOR " " MODEL, \ | |
176 | .api_version = 1, \ | |
c2fdcc25 | 177 | .init = std_init, \ |
700d6b64 | 178 | .cleanup = std_cleanup, \ |
607dcdea | 179 | .scan = scan, \ |
c01bf34c | 180 | .dev_list = std_dev_list, \ |
f778bf02 | 181 | .dev_clear = std_dev_clear, \ |
607dcdea UH |
182 | .config_get = NULL, \ |
183 | .config_set = config_set, \ | |
184 | .config_list = config_list, \ | |
185 | .dev_open = std_serial_dev_open, \ | |
186 | .dev_close = std_serial_dev_close, \ | |
187 | .dev_acquisition_start = dev_acquisition_start, \ | |
4b1a9d5d | 188 | .dev_acquisition_stop = std_serial_dev_acquisition_stop, \ |
607dcdea UH |
189 | .context = NULL, \ |
190 | }, \ | |
191 | VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \ | |
192 | VALID, PARSE, sizeof(struct CHIPSET##_info) \ | |
dd5c48a6 | 193 | }).di |
9380ec2f | 194 | |
607dcdea UH |
195 | /* |
196 | * Some scales have (user-configurable) 14-byte or 15-byte packets. | |
197 | * We transparently support both variants by specifying the larger value | |
198 | * below and due to the way the stream parser works. | |
199 | * | |
200 | * The scales have a standard baudrate (model dependent) as listed below, | |
201 | * but serial parameters are user-configurable. We support that by letting | |
202 | * the user override them via "serialcomm". | |
203 | */ | |
9380ec2f | 204 | |
dd5c48a6 | 205 | SR_REGISTER_DEV_DRIVER_LIST(kern_scale_drivers, |
607dcdea UH |
206 | SCALE( |
207 | "kern-ew-6200-2nm", kern, | |
208 | "KERN", "EW 6200-2NM", "1200/8n2", 1200, | |
209 | 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse | |
dd5c48a6 LPC |
210 | ) |
211 | ); |