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> | |
| 897c1a2e JH |
21 | |
| 22 | #include "fx2lafw.h" | |
| f6582cd7 JH |
23 | #include "command.h" |
| 24 | #include "sigrok.h" | |
| 25 | #include "sigrok-internal.h" | |
| 26 | ||
| 13bf7ecc JH |
27 | SR_PRIV int command_get_fw_version(libusb_device_handle *devhdl, |
| 28 | struct version_info *vi) | |
| 29 | { | |
| 44dfd483 | 30 | int ret; |
| 13bf7ecc | 31 | |
| 44dfd483 UH |
32 | ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR | |
| 33 | LIBUSB_ENDPOINT_IN, CMD_GET_FW_VERSION, 0x0000, 0x0000, | |
| 34 | (unsigned char *)vi, sizeof(struct version_info), 100); | |
| 35 | ||
| 36 | if (ret < 0) { | |
| 13bf7ecc | 37 | sr_err("fx2lafw: Unable to get version info: %d.", ret); |
| 1e94408a UH |
38 | return SR_ERR; |
| 39 | } | |
| 40 | ||
| 41 | return SR_OK; | |
| 42 | } | |
| 43 | ||
| 44 | SR_PRIV int command_get_revid_version(libusb_device_handle *devhdl, | |
| 45 | uint8_t *revid) | |
| 46 | { | |
| 47 | int ret; | |
| 48 | ||
| 49 | ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
| 50 | LIBUSB_ENDPOINT_IN, CMD_GET_REVID_VERSION, 0x0000, 0x0000, | |
| 51 | revid, 1, 100); | |
| 52 | ||
| 53 | if (ret < 0) { | |
| 54 | sr_err("fx2lafw: Unable to get REVID: %d.", ret); | |
| 13bf7ecc JH |
55 | return SR_ERR; |
| 56 | } | |
| 57 | ||
| 58 | return SR_OK; | |
| 59 | } | |
| 60 | ||
| b04902b6 UH |
61 | SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl, |
| 62 | uint64_t samplerate) | |
| f6582cd7 | 63 | { |
| dba02442 | 64 | struct cmd_start_acquisition cmd; |
| f4a9e5c0 | 65 | int delay = 0, ret; |
| dba02442 | 66 | |
| f4a9e5c0 | 67 | /* Compute the sample rate. */ |
| 44dfd483 | 68 | if ((SR_MHZ(48) % samplerate) == 0) { |
| dba02442 JH |
69 | cmd.flags = CMD_START_FLAGS_CLK_48MHZ; |
| 70 | delay = SR_MHZ(48) / samplerate - 1; | |
| 79dc6498 JH |
71 | if(delay > MAX_SAMPLE_DELAY) |
| 72 | delay = 0; | |
| 73 | } | |
| 74 | ||
| 75 | if (delay == 0 && (SR_MHZ(30) % samplerate) == 0) { | |
| dba02442 JH |
76 | cmd.flags = CMD_START_FLAGS_CLK_30MHZ; |
| 77 | delay = SR_MHZ(30) / samplerate - 1; | |
| 78 | } | |
| 79 | ||
| 897c1a2e | 80 | if (delay <= 0 || delay > MAX_SAMPLE_DELAY) { |
| 7ae2f9d5 UH |
81 | sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.", |
| 82 | samplerate); | |
| dba02442 JH |
83 | return SR_ERR; |
| 84 | } | |
| 85 | ||
| 897c1a2e JH |
86 | cmd.sample_delay_h = (delay >> 8) & 0x00FF; |
| 87 | cmd.sample_delay_l = delay & 0x00FF; | |
| dba02442 | 88 | |
| f4a9e5c0 UH |
89 | /* Send the control message. */ |
| 90 | ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR | | |
| 91 | LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000, | |
| 92 | (unsigned char *)&cmd, sizeof(cmd), 100); | |
| 93 | if (ret < 0) { | |
| 7ae2f9d5 | 94 | sr_err("fx2lafw: Unable to send start command: %d.", ret); |
| f6582cd7 JH |
95 | return SR_ERR; |
| 96 | } | |
| 97 | ||
| 98 | return SR_OK; | |
| 99 | } |