2 * This file is part of the sigrok project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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/>.
23 #include "sigrok-internal.h"
25 SR_PRIV int command_get_fw_version(libusb_device_handle *devhdl,
26 struct version_info *vi)
28 const int ret = libusb_control_transfer (devhdl,
29 LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN,
30 CMD_GET_FW_VERSION, 0x0000, 0x0000,
31 (unsigned char*)vi, sizeof(struct version_info),
35 sr_err("fx2lafw: Unable to get version info: %d.", ret);
42 SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl,
45 struct cmd_start_acquisition cmd;
48 /* Compute the sample rate. */
49 if((SR_MHZ(48) % samplerate) == 0) {
50 cmd.flags = CMD_START_FLAGS_CLK_48MHZ;
51 delay = SR_MHZ(48) / samplerate - 1;
52 } else if((SR_MHZ(30) % samplerate) == 0) {
53 cmd.flags = CMD_START_FLAGS_CLK_30MHZ;
54 delay = SR_MHZ(30) / samplerate - 1;
57 /* Note: sample_delay=0 is treated as sample_delay=256. */
58 if (delay <= 0 || delay > 256) {
59 sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.",
64 cmd.sample_delay = delay;
66 /* Send the control message. */
67 ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
68 LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000,
69 (unsigned char *)&cmd, sizeof(cmd), 100);
71 sr_err("fx2lafw: Unable to send start command: %d.", ret);