]>
Commit | Line | Data |
---|---|---|
6c6bc80a C |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
f2a66a8e | 4 | * Copyright (C) 2015 Christer Ekholm <christerekholm@gmail.com> |
6c6bc80a C |
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 | ||
f2a66a8e | 23 | SR_PRIV int hantek_6xxx_open(struct sr_dev_inst *sdi) |
6c6bc80a | 24 | { |
6c6bc80a | 25 | struct dev_context *devc; |
f2a66a8e C |
26 | struct drv_context *drvc = sdi->driver->context; |
27 | struct sr_usb_dev_inst *usb; | |
28 | struct libusb_device_descriptor des; | |
29 | libusb_device **devlist; | |
7e463623 | 30 | int err = SR_ERR, i; |
f2a66a8e | 31 | char connection_id[64]; |
6c6bc80a | 32 | |
f2a66a8e C |
33 | devc = sdi->priv; |
34 | usb = sdi->conn; | |
6c6bc80a | 35 | |
f2a66a8e C |
36 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); |
37 | for (i = 0; devlist[i]; i++) { | |
c940b7a3 | 38 | libusb_get_device_descriptor(devlist[i], &des); |
6c6bc80a | 39 | |
f2a66a8e C |
40 | if (des.idVendor != devc->profile->fw_vid |
41 | || des.idProduct != devc->profile->fw_pid) | |
42 | continue; | |
43 | ||
44 | if ((sdi->status == SR_ST_INITIALIZING) || | |
45 | (sdi->status == SR_ST_INACTIVE)) { | |
46 | /* | |
47 | * Check device by its physical USB bus/port address. | |
48 | */ | |
49 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
50 | if (strcmp(sdi->connection_id, connection_id)) | |
51 | /* This is not the one. */ | |
52 | continue; | |
53 | } | |
54 | ||
55 | if (!(err = libusb_open(devlist[i], &usb->devhdl))) { | |
56 | if (usb->address == 0xff) { | |
57 | /* | |
58 | * First time we touch this device after firmware upload, | |
59 | * so we don't know the address yet. | |
60 | */ | |
61 | usb->address = libusb_get_device_address(devlist[i]); | |
62 | } | |
63 | ||
f2a66a8e C |
64 | sr_info("Opened device on %d.%d (logical) / " |
65 | "%s (physical) interface %d.", | |
66 | usb->bus, usb->address, | |
67 | sdi->connection_id, USB_INTERFACE); | |
7e463623 UH |
68 | |
69 | err = SR_OK; | |
f2a66a8e C |
70 | } else { |
71 | sr_err("Failed to open device: %s.", | |
72 | libusb_error_name(err)); | |
7e463623 | 73 | err = SR_ERR; |
f2a66a8e C |
74 | } |
75 | ||
76 | /* If we made it here, we handled the device (somehow). */ | |
77 | break; | |
6c6bc80a C |
78 | } |
79 | ||
f2a66a8e C |
80 | libusb_free_device_list(devlist, 1); |
81 | ||
7e463623 | 82 | return err; |
f2a66a8e C |
83 | } |
84 | ||
85 | SR_PRIV void hantek_6xxx_close(struct sr_dev_inst *sdi) | |
86 | { | |
87 | struct sr_usb_dev_inst *usb; | |
88 | ||
89 | usb = sdi->conn; | |
90 | ||
91 | if (!usb->devhdl) | |
92 | return; | |
93 | ||
94 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
95 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
96 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
97 | libusb_close(usb->devhdl); | |
98 | usb->devhdl = NULL; | |
99 | sdi->status = SR_ST_INACTIVE; | |
100 | } | |
101 | ||
102 | SR_PRIV int hantek_6xxx_get_channeldata(const struct sr_dev_inst *sdi, | |
103 | libusb_transfer_cb_fn cb, uint32_t data_amount) | |
104 | { | |
105 | struct sr_usb_dev_inst *usb; | |
106 | struct libusb_transfer *transfer; | |
107 | int ret; | |
108 | unsigned char *buf; | |
109 | ||
110 | sr_dbg("Request channel data."); | |
111 | ||
112 | usb = sdi->conn; | |
113 | ||
114 | if (!(buf = g_try_malloc(data_amount))) { | |
115 | sr_err("Failed to malloc USB endpoint buffer."); | |
116 | return SR_ERR_MALLOC; | |
117 | } | |
118 | transfer = libusb_alloc_transfer(0); | |
119 | libusb_fill_bulk_transfer(transfer, usb->devhdl, HANTEK_EP_IN, buf, | |
120 | data_amount, cb, (void *)sdi, 4000); | |
8d6d7d5d | 121 | if ((ret = libusb_submit_transfer(transfer)) < 0) { |
f2a66a8e C |
122 | sr_err("Failed to submit transfer: %s.", |
123 | libusb_error_name(ret)); | |
124 | /* TODO: Free them all. */ | |
125 | libusb_free_transfer(transfer); | |
126 | g_free(buf); | |
127 | return SR_ERR; | |
128 | } | |
129 | ||
130 | return SR_OK; | |
131 | } | |
132 | ||
133 | static uint8_t samplerate_to_reg(uint64_t samplerate) | |
134 | { | |
135 | const uint64_t samplerate_values[] = {SAMPLERATE_VALUES}; | |
136 | const uint8_t samplerate_regs[] = {SAMPLERATE_REGS}; | |
137 | uint32_t i; | |
138 | ||
139 | for (i = 0; i < ARRAY_SIZE(samplerate_values); i++) { | |
140 | if (samplerate_values[i] == samplerate) | |
141 | return samplerate_regs[i]; | |
142 | } | |
143 | ||
144 | sr_err("Failed to convert samplerate: %" PRIu64 ".", samplerate); | |
145 | ||
146 | return samplerate_regs[ARRAY_SIZE(samplerate_values) - 1]; | |
147 | } | |
148 | ||
149 | static uint8_t voltage_to_reg(uint8_t state) | |
150 | { | |
151 | const uint8_t vdiv_reg[] = {VDIV_REG}; | |
152 | ||
153 | if (state < ARRAY_SIZE(vdiv_reg)) { | |
154 | return vdiv_reg[state]; | |
155 | } else { | |
156 | sr_err("Failed to convert vdiv: %d.", state); | |
157 | return vdiv_reg[ARRAY_SIZE(vdiv_reg) - 1]; | |
158 | } | |
159 | } | |
160 | ||
161 | static int write_control(const struct sr_dev_inst *sdi, | |
162 | enum control_requests reg, uint8_t value) | |
163 | { | |
164 | struct sr_usb_dev_inst *usb = sdi->conn; | |
165 | int ret; | |
166 | ||
167 | sr_spew("hantek_6xxx_write_control: 0x%x 0x%x", reg, value); | |
168 | ||
169 | if ((ret = libusb_control_transfer(usb->devhdl, | |
170 | LIBUSB_REQUEST_TYPE_VENDOR, (uint8_t)reg, | |
171 | 0, 0, &value, 1, 100)) <= 0) { | |
172 | sr_err("Failed to control transfer: 0x%x: %s.", reg, | |
173 | libusb_error_name(ret)); | |
174 | return ret; | |
175 | } | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | SR_PRIV int hantek_6xxx_start_data_collecting(const struct sr_dev_inst *sdi) | |
181 | { | |
182 | sr_dbg("trigger"); | |
183 | return write_control(sdi, TRIGGER_REG, 1); | |
184 | } | |
185 | ||
186 | SR_PRIV int hantek_6xxx_stop_data_collecting(const struct sr_dev_inst *sdi) | |
187 | { | |
188 | return write_control(sdi, TRIGGER_REG, 0); | |
189 | } | |
190 | ||
191 | SR_PRIV int hantek_6xxx_update_samplerate(const struct sr_dev_inst *sdi) | |
192 | { | |
193 | struct dev_context *devc = sdi->priv; | |
194 | sr_dbg("update samplerate %d", samplerate_to_reg(devc->samplerate)); | |
195 | ||
196 | return write_control(sdi, SAMPLERATE_REG, samplerate_to_reg(devc->samplerate)); | |
197 | } | |
198 | ||
199 | SR_PRIV int hantek_6xxx_update_vdiv(const struct sr_dev_inst *sdi) | |
200 | { | |
201 | struct dev_context *devc = sdi->priv; | |
202 | int ret1, ret2; | |
203 | ||
204 | sr_dbg("update vdiv %d %d", voltage_to_reg(devc->voltage[0]), | |
205 | voltage_to_reg(devc->voltage[1])); | |
206 | ||
207 | ret1 = write_control(sdi, VDIV_CH1_REG, voltage_to_reg(devc->voltage[0])); | |
208 | ret2 = write_control(sdi, VDIV_CH2_REG, voltage_to_reg(devc->voltage[1])); | |
209 | ||
210 | return MIN(ret1, ret2); | |
211 | } | |
212 | ||
cc5ebc8a BL |
213 | SR_PRIV int hantek_6xxx_update_coupling(const struct sr_dev_inst *sdi) |
214 | { | |
215 | struct dev_context *devc = sdi->priv; | |
216 | uint8_t coupling = 0xFF & ((devc->coupling[1] << 4) | devc->coupling[0]); | |
217 | ||
817b7441 EM |
218 | if (devc->has_coupling) { |
219 | sr_dbg("update coupling 0x%x", coupling); | |
220 | return write_control(sdi, COUPLING_REG, coupling); | |
221 | } else { | |
222 | sr_dbg("coupling not supported"); | |
223 | return SR_OK; | |
224 | } | |
cc5ebc8a BL |
225 | } |
226 | ||
f2a66a8e C |
227 | SR_PRIV int hantek_6xxx_update_channels(const struct sr_dev_inst *sdi) |
228 | { | |
229 | struct dev_context *devc = sdi->priv; | |
230 | uint8_t chan = devc->ch_enabled[1] ? 2 : 1; | |
231 | sr_dbg("update channels amount %d", chan); | |
232 | ||
233 | return write_control(sdi, CHANNELS_REG, chan); | |
234 | } | |
235 | ||
236 | SR_PRIV int hantek_6xxx_init(const struct sr_dev_inst *sdi) | |
237 | { | |
238 | sr_dbg("Initializing"); | |
239 | ||
240 | hantek_6xxx_update_samplerate(sdi); | |
241 | hantek_6xxx_update_vdiv(sdi); | |
cc5ebc8a | 242 | hantek_6xxx_update_coupling(sdi); |
f2a66a8e C |
243 | // hantek_6xxx_update_channels(sdi); /* Only 2 channel mode supported. */ |
244 | ||
245 | return SR_OK; | |
6c6bc80a | 246 | } |