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)
30 ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
31 LIBUSB_ENDPOINT_IN, CMD_GET_FW_VERSION, 0x0000, 0x0000,
32 (unsigned char *)vi, sizeof(struct version_info), 100);
35 sr_err("fx2lafw: Unable to get version info: %d.", ret);
42 SR_PRIV int command_get_revid_version(libusb_device_handle *devhdl,
47 ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
48 LIBUSB_ENDPOINT_IN, CMD_GET_REVID_VERSION, 0x0000, 0x0000,
52 sr_err("fx2lafw: Unable to get REVID: %d.", ret);
59 SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl,
62 struct cmd_start_acquisition cmd;
65 /* Compute the sample rate. */
66 if ((SR_MHZ(48) % samplerate) == 0) {
67 cmd.flags = CMD_START_FLAGS_CLK_48MHZ;
68 delay = SR_MHZ(48) / samplerate - 1;
69 } else if ((SR_MHZ(30) % samplerate) == 0) {
70 cmd.flags = CMD_START_FLAGS_CLK_30MHZ;
71 delay = SR_MHZ(30) / samplerate - 1;
74 /* Note: sample_delay=0 is treated as sample_delay=256. */
75 if (delay <= 0 || delay > 256) {
76 sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.",
81 cmd.sample_delay = delay;
83 /* Send the control message. */
84 ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
85 LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000,
86 (unsigned char *)&cmd, sizeof(cmd), 100);
88 sr_err("fx2lafw: Unable to send start command: %d.", ret);