[libsigrok.git] / hardware / fx2lafw / command.c

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <libusb.h>
#include "fx2lafw.h"
#include "command.h"
#include "libsigrok.h"
#include "libsigrok-internal.h"

SR_PRIV int command_get_fw_version(libusb_device_handle *devhdl,
				   struct version_info *vi)
{
	int ret;

	ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
		LIBUSB_ENDPOINT_IN, CMD_GET_FW_VERSION, 0x0000, 0x0000,
		(unsigned char *)vi, sizeof(struct version_info), 100);

	if (ret < 0) {
		sr_err("fx2lafw: Unable to get version info: %s.",
		       libusb_error_name(ret));
		return SR_ERR;
	}

	return SR_OK;
}

SR_PRIV int command_get_revid_version(libusb_device_handle *devhdl,
				      uint8_t *revid)
{
	int ret;

	ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
		LIBUSB_ENDPOINT_IN, CMD_GET_REVID_VERSION, 0x0000, 0x0000,
		revid, 1, 100);

	if (ret < 0) {
		sr_err("fx2lafw: Unable to get REVID: %s.",
		       libusb_error_name(ret));
		return SR_ERR;
	}

	return SR_OK;
}

SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl,
				      uint64_t samplerate, gboolean samplewide)
{
	struct cmd_start_acquisition cmd;
	int delay = 0, ret;

	/* Compute the sample rate. */
	if (samplewide && samplerate > MAX_16BIT_SAMPLE_RATE) {
		sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz "
		       "when collecting 16-bit samples.", samplerate);
		return SR_ERR;
	}

	if ((SR_MHZ(48) % samplerate) == 0) {
		cmd.flags = CMD_START_FLAGS_CLK_48MHZ;
		delay = SR_MHZ(48) / samplerate - 1;
		if (delay > MAX_SAMPLE_DELAY)
			delay = 0;
	}

	if (delay == 0 && (SR_MHZ(30) % samplerate) == 0) {
		cmd.flags = CMD_START_FLAGS_CLK_30MHZ;
		delay = SR_MHZ(30) / samplerate - 1;
	}

	sr_info("fx2lafw: GPIF delay = %d, clocksource = %sMHz", delay,
		(cmd.flags & CMD_START_FLAGS_CLK_48MHZ) ? "48" : "30");

	if (delay <= 0 || delay > MAX_SAMPLE_DELAY) {
		sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.",
		       samplerate);
		return SR_ERR;
	}

	cmd.sample_delay_h = (delay >> 8) & 0xff;
	cmd.sample_delay_l = delay & 0xff;

	/* Select the sampling width */
	cmd.flags |= samplewide ? CMD_START_FLAGS_SAMPLE_16BIT :
		CMD_START_FLAGS_SAMPLE_8BIT;

	/* Send the control message. */
	ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
			LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000,
			(unsigned char *)&cmd, sizeof(cmd), 100);
	if (ret < 0) {
		sr_err("fx2lafw: Unable to send start command: %s.",
		       libusb_error_name(ret));
		return SR_ERR;
	}

	return SR_OK;
}
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	21	#include "fx2lafw.h"
f6582cd7	22	#include "command.h"
45c59c8b BV	23	#include "libsigrok.h"
45c59c8b BV	24	#include "libsigrok-internal.h"
f6582cd7	25
13bf7ecc JH	26	SR_PRIV int command_get_fw_version(libusb_device_handle *devhdl,
	27	struct version_info *vi)
	28	{
44dfd483	29	int ret;
13bf7ecc	30
44dfd483 UH	31	ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR \|
	32	LIBUSB_ENDPOINT_IN, CMD_GET_FW_VERSION, 0x0000, 0x0000,
	33	(unsigned char *)vi, sizeof(struct version_info), 100);
	34
	35	if (ret < 0) {
d4928d71 PS	36	sr_err("fx2lafw: Unable to get version info: %s.",
d4928d71 PS	37	libusb_error_name(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) {
d4928d71 PS	54	sr_err("fx2lafw: Unable to get REVID: %s.",
d4928d71 PS	55	libusb_error_name(ret));
13bf7ecc JH	56	return SR_ERR;
	57	}
	58
	59	return SR_OK;
	60	}
	61
b04902b6	62	SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl,
0a88ec3d	63	uint64_t samplerate, gboolean samplewide)
f6582cd7	64	{
dba02442	65	struct cmd_start_acquisition cmd;
f4a9e5c0	66	int delay = 0, ret;
dba02442	67
f4a9e5c0	68	/* Compute the sample rate. */
0a88ec3d	69	if (samplewide && samplerate > MAX_16BIT_SAMPLE_RATE) {
f4575b65	70	sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz "
0a88ec3d	71	"when collecting 16-bit samples.", samplerate);
f4575b65 JH	72	return SR_ERR;
	73	}
	74
44dfd483	75	if ((SR_MHZ(48) % samplerate) == 0) {
dba02442 JH	76	cmd.flags = CMD_START_FLAGS_CLK_48MHZ;
dba02442 JH	77	delay = SR_MHZ(48) / samplerate - 1;
37dc0b16	78	if (delay > MAX_SAMPLE_DELAY)
79dc6498 JH	79	delay = 0;
	80	}
	81
	82	if (delay == 0 && (SR_MHZ(30) % samplerate) == 0) {
dba02442 JH	83	cmd.flags = CMD_START_FLAGS_CLK_30MHZ;
	84	delay = SR_MHZ(30) / samplerate - 1;
	85	}
	86
37dc0b16	87	sr_info("fx2lafw: GPIF delay = %d, clocksource = %sMHz", delay,
dc68c660 JH	88	(cmd.flags & CMD_START_FLAGS_CLK_48MHZ) ? "48" : "30");
dc68c660 JH	89
897c1a2e	90	if (delay <= 0 \|\| delay > MAX_SAMPLE_DELAY) {
7ae2f9d5 UH	91	sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.",
7ae2f9d5 UH	92	samplerate);
dba02442 JH	93	return SR_ERR;
	94	}
	95
37dc0b16 UH	96	cmd.sample_delay_h = (delay >> 8) & 0xff;
37dc0b16 UH	97	cmd.sample_delay_l = delay & 0xff;
dba02442	98
d1ddc7a9 JH	99	/* Select the sampling width */
	100	cmd.flags \|= samplewide ? CMD_START_FLAGS_SAMPLE_16BIT :
	101	CMD_START_FLAGS_SAMPLE_8BIT;
	102
f4a9e5c0 UH	103	/* Send the control message. */
	104	ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR \|
	105	LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000,
	106	(unsigned char *)&cmd, sizeof(cmd), 100);
	107	if (ret < 0) {
d4928d71 PS	108	sr_err("fx2lafw: Unable to send start command: %s.",
d4928d71 PS	109	libusb_error_name(ret));
f6582cd7 JH	110	return SR_ERR;
	111	}
	112
	113	return SR_OK;
	114	}