[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 "sigrok.h"
#include "sigrok-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: %d.", 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: %d.", ret);
		return SR_ERR;
	}

	return SR_OK;
}

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

	/* Compute the sample rate. */
	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: %d.", 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 JH	21
897c1a2e JH	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	61	SR_PRIV int command_start_acquisition(libusb_device_handle *devhdl,
d1ddc7a9 JH	62	uint64_t samplerate,
d1ddc7a9 JH	63	bool samplewide)
f6582cd7	64	{
dba02442	65	struct cmd_start_acquisition cmd;
f4a9e5c0	66	int delay = 0, ret;
dba02442	67
f4a9e5c0	68	/* Compute the sample rate. */
44dfd483	69	if ((SR_MHZ(48) % samplerate) == 0) {
dba02442 JH	70	cmd.flags = CMD_START_FLAGS_CLK_48MHZ;
dba02442 JH	71	delay = SR_MHZ(48) / samplerate - 1;
37dc0b16	72	if (delay > MAX_SAMPLE_DELAY)
79dc6498 JH	73	delay = 0;
	74	}
	75
	76	if (delay == 0 && (SR_MHZ(30) % samplerate) == 0) {
dba02442 JH	77	cmd.flags = CMD_START_FLAGS_CLK_30MHZ;
	78	delay = SR_MHZ(30) / samplerate - 1;
	79	}
	80
37dc0b16	81	sr_info("fx2lafw: GPIF delay = %d, clocksource = %sMHz", delay,
dc68c660 JH	82	(cmd.flags & CMD_START_FLAGS_CLK_48MHZ) ? "48" : "30");
dc68c660 JH	83
897c1a2e	84	if (delay <= 0 \|\| delay > MAX_SAMPLE_DELAY) {
7ae2f9d5 UH	85	sr_err("fx2lafw: Unable to sample at %" PRIu64 "Hz.",
7ae2f9d5 UH	86	samplerate);
dba02442 JH	87	return SR_ERR;
	88	}
	89
37dc0b16 UH	90	cmd.sample_delay_h = (delay >> 8) & 0xff;
37dc0b16 UH	91	cmd.sample_delay_l = delay & 0xff;
dba02442	92
d1ddc7a9 JH	93	/* Select the sampling width */
	94	cmd.flags \|= samplewide ? CMD_START_FLAGS_SAMPLE_16BIT :
	95	CMD_START_FLAGS_SAMPLE_8BIT;
	96
f4a9e5c0 UH	97	/* Send the control message. */
	98	ret = libusb_control_transfer(devhdl, LIBUSB_REQUEST_TYPE_VENDOR \|
	99	LIBUSB_ENDPOINT_OUT, CMD_START, 0x0000, 0x0000,
	100	(unsigned char *)&cmd, sizeof(cmd), 100);
	101	if (ret < 0) {
7ae2f9d5	102	sr_err("fx2lafw: Unable to send start command: %d.", ret);
f6582cd7 JH	103	return SR_ERR;
	104	}
	105
	106	return SR_OK;
	107	}