projects / libsigrok.git / blame
| Commit | Line | Data |
|---|---|---|
| f6582cd7 JH |
1 | /* |
| 2 | * This file is part of the sigrok project. | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
| 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 <libusb.h> | |
| f6582cd7 JH |
21 | #include "command.h" |
| 22 | #include "sigrok.h" | |
| 23 | #include "sigrok-internal.h" | |
| 24 | ||
| 13bf7ecc JH |
25 | SR_PRIV int command_get_fw_version(libusb_device_handle *devhdl, |
| 26 | struct version_info *vi) | |
| 27 | { | |
| 44dfd483 | 28 | int ret; |
| 13bf7ecc | 29 | |
| 44dfd483 UH |
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); | |
| 33 | ||
| 34 | if (ret < 0) { | |
| 13bf7ecc JH |
35 | sr_err("fx2lafw: Unable to get version info: %d.", ret); |
| 36 | return SR_ERR; | |
| 37 | } | |
| 38 | ||
| 39 | return SR_OK; | |
| 40 | } | |
| 41 | ||
| b04902b6 UH |
42 | SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl, |
| 43 | uint64_t samplerate) | |
| f6582cd7 | 44 | { |
| dba02442 | 45 | struct cmd_start_acquisition cmd; |
| f4a9e5c0 | 46 | int delay = 0, ret; |
| dba02442 | 47 | |
| f4a9e5c0 | 48 | /* Compute the sample rate. */ |
| 44dfd483 | 49 | if ((SR_MHZ(48) % samplerate) == 0) { |
| dba02442 JH |
50 | cmd.flags = CMD_START_FLAGS_CLK_48MHZ; |
| 51 | delay = SR_MHZ(48) / samplerate - 1; | |
| 44dfd483 | 52 | } else if ((SR_MHZ(30) % samplerate) == 0) { |
| dba02442 JH |
53 | cmd.flags = CMD_START_FLAGS_CLK_30MHZ; |
| 54 | delay = SR_MHZ(30) / samplerate - 1; | |
| 55 | } | |
| 56 | ||
| f4a9e5c0 | 57 | /* Note: sample_delay=0 is treated as sample_delay=256. */ |
| dba02442 | 58 | if (delay <= 0 || delay > 256) { |
| 7ae2f9d5 UH |
59 | sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.", |
| 60 | samplerate); | |
| dba02442 JH |
61 | return SR_ERR; |
| 62 | } | |
| 63 | ||
| 64 | cmd.sample_delay = delay; | |
| 65 | ||
| f4a9e5c0 UH |
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); | |
| 70 | if (ret < 0) { | |
| 7ae2f9d5 | 71 | sr_err("fx2lafw: Unable to send start command: %d.", ret); |
| f6582cd7 JH |
72 | return SR_ERR; |
| 73 | } | |
| 74 | ||
| 75 | return SR_OK; | |
| 76 | } |