]>
Commit | Line | Data |
---|---|---|
0549416e JC |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2018 James Churchill <pelrun@gmail.com> | |
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 3 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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include "protocol.h" | |
22 | ||
69b05583 JC |
23 | SR_PRIV int rdtech_dps_get_reg(struct sr_modbus_dev_inst *modbus, |
24 | uint16_t address, uint16_t *value) | |
25 | { | |
26 | uint16_t registers[1]; | |
27 | int ret = sr_modbus_read_holding_registers(modbus, address, 1, registers); | |
28 | *value = RB16(registers + 0); | |
29 | return ret; | |
30 | } | |
31 | ||
32 | SR_PRIV int rdtech_dps_set_reg(struct sr_modbus_dev_inst *modbus, | |
33 | uint16_t address, uint16_t value) | |
34 | { | |
35 | uint16_t registers[1]; | |
36 | WB16(registers, value); | |
37 | return sr_modbus_write_multiple_registers(modbus, address, 1, registers); | |
38 | } | |
39 | ||
40 | SR_PRIV int rdtech_dps_get_model_version(struct sr_modbus_dev_inst *modbus, | |
41 | uint16_t *model, uint16_t *version) | |
42 | { | |
43 | uint16_t registers[2]; | |
44 | int ret; | |
45 | ret = sr_modbus_read_holding_registers(modbus, REG_MODEL, 2, registers); | |
46 | if (ret == SR_OK) { | |
47 | *model = RB16(registers + 0); | |
48 | *version = RB16(registers + 1); | |
49 | sr_info("RDTech PSU model: %d version: %d", *model, *version); | |
50 | } | |
51 | return ret; | |
52 | } | |
53 | ||
54 | static void send_value(const struct sr_dev_inst *sdi, struct sr_channel *ch, | |
55 | float value, enum sr_mq mq, enum sr_unit unit, int digits) | |
56 | { | |
57 | struct sr_datafeed_packet packet; | |
58 | struct sr_datafeed_analog analog; | |
59 | struct sr_analog_encoding encoding; | |
60 | struct sr_analog_meaning meaning; | |
61 | struct sr_analog_spec spec; | |
62 | ||
63 | sr_analog_init(&analog, &encoding, &meaning, &spec, digits); | |
64 | analog.meaning->channels = g_slist_append(NULL, ch); | |
65 | analog.num_samples = 1; | |
66 | analog.data = &value; | |
67 | analog.meaning->mq = mq; | |
68 | analog.meaning->unit = unit; | |
69 | analog.meaning->mqflags = SR_MQFLAG_DC; | |
70 | ||
71 | packet.type = SR_DF_ANALOG; | |
72 | packet.payload = &analog; | |
73 | sr_session_send(sdi, &packet); | |
74 | g_slist_free(analog.meaning->channels); | |
75 | } | |
76 | ||
77 | SR_PRIV int rdtech_dps_capture_start(const struct sr_dev_inst *sdi) | |
78 | { | |
79 | struct dev_context *devc; | |
80 | struct sr_modbus_dev_inst *modbus; | |
81 | int ret; | |
82 | ||
83 | modbus = sdi->conn; | |
84 | devc = sdi->priv; | |
85 | ||
86 | if ((ret = sr_modbus_read_holding_registers(modbus, REG_UOUT, 3, NULL)) == SR_OK) | |
87 | devc->expecting_registers = 2; | |
88 | return ret; | |
89 | } | |
90 | ||
0549416e JC |
91 | SR_PRIV int rdtech_dps_receive_data(int fd, int revents, void *cb_data) |
92 | { | |
69b05583 | 93 | struct sr_dev_inst *sdi; |
0549416e | 94 | struct dev_context *devc; |
69b05583 JC |
95 | struct sr_modbus_dev_inst *modbus; |
96 | struct sr_datafeed_packet packet; | |
97 | uint16_t registers[3]; | |
0549416e JC |
98 | |
99 | (void)fd; | |
69b05583 | 100 | (void)revents; |
0549416e JC |
101 | |
102 | if (!(sdi = cb_data)) | |
103 | return TRUE; | |
104 | ||
69b05583 JC |
105 | modbus = sdi->conn; |
106 | devc = sdi->priv; | |
107 | ||
108 | devc->expecting_registers = 0; | |
109 | if (sr_modbus_read_holding_registers(modbus, -1, 3, registers) == SR_OK) { | |
110 | packet.type = SR_DF_FRAME_BEGIN; | |
111 | sr_session_send(sdi, &packet); | |
112 | ||
113 | send_value(sdi, sdi->channels->data, | |
114 | RB16(registers + 0) / 100.0f, | |
115 | SR_MQ_VOLTAGE, SR_UNIT_VOLT, 3); | |
116 | send_value(sdi, sdi->channels->next->data, | |
117 | RB16(registers + 1) / 1000.0f, | |
118 | SR_MQ_CURRENT, SR_UNIT_AMPERE, 4); | |
119 | send_value(sdi, sdi->channels->next->next->data, | |
120 | RB16(registers + 2) / 100.0f, | |
121 | SR_MQ_POWER, SR_UNIT_WATT, 3); | |
0549416e | 122 | |
69b05583 JC |
123 | packet.type = SR_DF_FRAME_END; |
124 | sr_session_send(sdi, &packet); | |
125 | sr_sw_limits_update_samples_read(&devc->limits, 1); | |
126 | } | |
127 | ||
128 | if (sr_sw_limits_check(&devc->limits)) { | |
129 | sr_dev_acquisition_stop(sdi); | |
130 | return TRUE; | |
0549416e JC |
131 | } |
132 | ||
69b05583 | 133 | rdtech_dps_capture_start(sdi); |
0549416e JC |
134 | return TRUE; |
135 | } |