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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 | ||
05199c0a | 31 | static const uint32_t drvopts[] = { |
607dcdea | 32 | SR_CONF_SCALE, |
05199c0a UH |
33 | }; |
34 | ||
35 | static const uint32_t devopts[] = { | |
607dcdea UH |
36 | SR_CONF_CONTINUOUS, |
37 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
38 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
39 | }; | |
40 | ||
9380ec2f UH |
41 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
42 | { | |
607dcdea UH |
43 | struct scale_info *scale; |
44 | struct sr_config *src; | |
45 | GSList *l, *devices; | |
46 | const char *conn, *serialcomm; | |
47 | struct sr_dev_inst *sdi; | |
607dcdea UH |
48 | struct dev_context *devc; |
49 | struct sr_serial_dev_inst *serial; | |
50 | int ret; | |
51 | size_t len; | |
52 | uint8_t buf[128]; | |
53 | ||
54 | scale = (struct scale_info *)di; | |
55 | ||
56 | conn = serialcomm = NULL; | |
57 | for (l = options; l; l = l->next) { | |
58 | src = l->data; | |
59 | switch (src->key) { | |
60 | case SR_CONF_CONN: | |
61 | conn = g_variant_get_string(src->data, NULL); | |
62 | break; | |
63 | case SR_CONF_SERIALCOMM: | |
64 | serialcomm = g_variant_get_string(src->data, NULL); | |
65 | break; | |
66 | } | |
67 | } | |
68 | if (!conn) | |
69 | return NULL; | |
9380ec2f | 70 | |
607dcdea UH |
71 | if (!serialcomm) |
72 | serialcomm = scale->conn; | |
9380ec2f | 73 | |
607dcdea | 74 | serial = sr_serial_dev_inst_new(conn, serialcomm); |
9380ec2f | 75 | |
607dcdea UH |
76 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) |
77 | return NULL; | |
9380ec2f | 78 | |
607dcdea | 79 | sr_info("Probing serial port %s.", conn); |
9380ec2f | 80 | |
607dcdea | 81 | devices = NULL; |
9380ec2f | 82 | |
607dcdea | 83 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); |
379e95c5 | 84 | if (serial_write_blocking(serial, "O1\r\n", 4, 0) < 0) |
607dcdea UH |
85 | goto scan_cleanup; |
86 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
9380ec2f | 87 | |
607dcdea UH |
88 | /* Let's get a bit of data and see if we can find a packet. */ |
89 | len = sizeof(buf); | |
90 | ret = serial_stream_detect(serial, buf, &len, scale->packet_size, | |
1a7adeac | 91 | scale->packet_valid, NULL, NULL, 3000); |
607dcdea UH |
92 | if (ret != SR_OK) |
93 | goto scan_cleanup; | |
9380ec2f | 94 | |
607dcdea | 95 | sr_info("Found device on port %s.", conn); |
9380ec2f | 96 | |
607dcdea | 97 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
9380ec2f | 98 | sdi->status = SR_ST_INACTIVE; |
607dcdea UH |
99 | sdi->vendor = g_strdup(scale->vendor); |
100 | sdi->model = g_strdup(scale->device); | |
101 | devc = g_malloc0(sizeof(struct dev_context)); | |
7fc9dc31 | 102 | sr_sw_limits_init(&devc->limits); |
607dcdea UH |
103 | sdi->inst_type = SR_INST_SERIAL; |
104 | sdi->conn = serial; | |
105 | sdi->priv = devc; | |
607dcdea | 106 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass"); |
607dcdea UH |
107 | devices = g_slist_append(devices, sdi); |
108 | ||
109 | scan_cleanup: | |
110 | serial_close(serial); | |
9380ec2f | 111 | |
15a5bfe4 | 112 | return std_scan_complete(di, devices); |
9380ec2f UH |
113 | } |
114 | ||
dd7a72ea UH |
115 | static int config_set(uint32_t key, GVariant *data, |
116 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
9380ec2f | 117 | { |
607dcdea | 118 | struct dev_context *devc; |
9380ec2f | 119 | |
9380ec2f UH |
120 | (void)cg; |
121 | ||
b0baddef | 122 | devc = sdi->priv; |
607dcdea | 123 | |
7fc9dc31 | 124 | return sr_sw_limits_config_set(&devc->limits, key, data); |
9380ec2f UH |
125 | } |
126 | ||
dd7a72ea UH |
127 | static int config_list(uint32_t key, GVariant **data, |
128 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
9380ec2f | 129 | { |
05199c0a | 130 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); |
9380ec2f UH |
131 | } |
132 | ||
695dc859 | 133 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
9380ec2f | 134 | { |
607dcdea UH |
135 | struct dev_context *devc; |
136 | struct sr_serial_dev_inst *serial; | |
9380ec2f | 137 | |
208c1d35 | 138 | devc = sdi->priv; |
607dcdea UH |
139 | serial = sdi->conn; |
140 | ||
141 | sr_spew("Set O1 mode (continuous values, stable and unstable ones)."); | |
379e95c5 | 142 | if (serial_write_blocking(serial, "O1\r\n", 4, 0) < 0) |
607dcdea UH |
143 | return SR_ERR; |
144 | /* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */ | |
145 | ||
7fc9dc31 | 146 | sr_sw_limits_acquisition_start(&devc->limits); |
bee2b016 | 147 | std_session_send_df_header(sdi); |
607dcdea | 148 | |
607dcdea UH |
149 | serial_source_add(sdi->session, serial, G_IO_IN, 50, |
150 | kern_scale_receive_data, (void *)sdi); | |
151 | ||
9380ec2f UH |
152 | return SR_OK; |
153 | } | |
154 | ||
685ed709 | 155 | #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, PACKETSIZE, \ |
607dcdea | 156 | VALID, PARSE) \ |
dd5c48a6 | 157 | &((struct scale_info) { \ |
607dcdea UH |
158 | { \ |
159 | .name = ID, \ | |
160 | .longname = VENDOR " " MODEL, \ | |
161 | .api_version = 1, \ | |
c2fdcc25 | 162 | .init = std_init, \ |
700d6b64 | 163 | .cleanup = std_cleanup, \ |
607dcdea | 164 | .scan = scan, \ |
c01bf34c | 165 | .dev_list = std_dev_list, \ |
f778bf02 | 166 | .dev_clear = std_dev_clear, \ |
607dcdea UH |
167 | .config_get = NULL, \ |
168 | .config_set = config_set, \ | |
169 | .config_list = config_list, \ | |
170 | .dev_open = std_serial_dev_open, \ | |
171 | .dev_close = std_serial_dev_close, \ | |
172 | .dev_acquisition_start = dev_acquisition_start, \ | |
4b1a9d5d | 173 | .dev_acquisition_stop = std_serial_dev_acquisition_stop, \ |
607dcdea UH |
174 | .context = NULL, \ |
175 | }, \ | |
685ed709 | 176 | VENDOR, MODEL, CONN, PACKETSIZE, \ |
607dcdea | 177 | VALID, PARSE, sizeof(struct CHIPSET##_info) \ |
dd5c48a6 | 178 | }).di |
9380ec2f | 179 | |
607dcdea UH |
180 | /* |
181 | * Some scales have (user-configurable) 14-byte or 15-byte packets. | |
182 | * We transparently support both variants by specifying the larger value | |
183 | * below and due to the way the stream parser works. | |
184 | * | |
185 | * The scales have a standard baudrate (model dependent) as listed below, | |
186 | * but serial parameters are user-configurable. We support that by letting | |
187 | * the user override them via "serialcomm". | |
188 | */ | |
9380ec2f | 189 | |
dd5c48a6 | 190 | SR_REGISTER_DEV_DRIVER_LIST(kern_scale_drivers, |
607dcdea UH |
191 | SCALE( |
192 | "kern-ew-6200-2nm", kern, | |
685ed709 | 193 | "KERN", "EW 6200-2NM", "1200/8n2", |
607dcdea | 194 | 15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse |
dd5c48a6 LPC |
195 | ) |
196 | ); |