[libsigrok.git] / src / hardware / hantek-4032l / protocol.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2016 Andreas Zschunke <andreas.zschunke@gmx.net>
 * Copyright (C) 2017 Andrej Valek <andy@skyrain.eu>
 * Copyright (C) 2017 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * 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 <config.h>
#include "protocol.h"

#define H4032L_USB_TIMEOUT 500

enum h4032l_cmd {
	CMD_RESET = 0x00b3, /* Also arms the logic analyzer. */
	CMD_CONFIGURE = 0x2b1a,
	CMD_STATUS = 0x4b3a,
	CMD_GET = 0x6b5a
};

struct h4032l_status_packet {
	uint32_t magic;
	uint32_t values;
	uint32_t status;
};

SR_PRIV int h4032l_receive_data(int fd, int revents, void *cb_data)
{
	struct timeval tv;
	struct drv_context *drvc;

	(void)fd;
	(void)revents;

	drvc = (struct drv_context *)cb_data;

	tv.tv_sec = tv.tv_usec = 0;
	libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);

	return TRUE;
}

void LIBUSB_CALL h4032l_usb_callback(struct libusb_transfer *transfer)
{
	const struct sr_dev_inst *sdi = transfer->user_data;
	struct dev_context *devc = sdi->priv;
	struct drv_context *drvc = sdi->driver->context;
	struct sr_usb_dev_inst *usb = sdi->conn;
	gboolean cmd = FALSE;
	uint32_t max_samples = 512 / sizeof(uint32_t);
	uint32_t *buffer;
	struct h4032l_status_packet *status;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_logic logic;
	uint32_t number_samples;
	int ret;

	if (transfer->status != LIBUSB_TRANSFER_COMPLETED)
		sr_dbg("%s error: %d.", __func__, transfer->status);

	buffer = (uint32_t *)transfer->buffer;

	switch (devc->status) {
	case H4032L_STATUS_IDLE:
		sr_err("USB callback called in idle.");
		break;
	case H4032L_STATUS_CMD_CONFIGURE:
		/* Select status request as next. */
		cmd = TRUE;
		devc->cmd_pkt.cmd = CMD_STATUS;
		devc->status = H4032L_STATUS_CMD_STATUS;
		break;
	case H4032L_STATUS_CMD_STATUS:
		/* Select status request as next. */
		devc->status = H4032L_STATUS_RESPONSE_STATUS;
		break;
	case H4032L_STATUS_RESPONSE_STATUS:
		/*
		 * Check magic and if status is complete, then select
		 * First Transfer as next.
		 */
		status = (struct h4032l_status_packet *)transfer->buffer;
		if (status->magic != H4032L_STATUS_PACKET_MAGIC) {
			devc->status = H4032L_STATUS_RESPONSE_STATUS;
		} else if (status->status == 2) {
			devc->status = H4032L_STATUS_RESPONSE_STATUS_CONTINUE;
		} else {
			devc->status = H4032L_STATUS_RESPONSE_STATUS_RETRY;
		}
		break;
	case H4032L_STATUS_RESPONSE_STATUS_RETRY:
		devc->status = H4032L_STATUS_CMD_STATUS;
		devc->cmd_pkt.cmd = CMD_STATUS;
		cmd = TRUE;
		break;
	case H4032L_STATUS_RESPONSE_STATUS_CONTINUE:
		devc->status = H4032L_STATUS_CMD_GET;
		devc->cmd_pkt.cmd = CMD_GET;
		cmd = TRUE;
		break;
	case H4032L_STATUS_CMD_GET:
		devc->status = H4032L_STATUS_FIRST_TRANSFER;
		break;
	case H4032L_STATUS_FIRST_TRANSFER:
		/* Drop packets until H4032L_START_PACKET_MAGIC. */
		if (buffer[0] != H4032L_START_PACKET_MAGIC) {
			sr_dbg("Mismatch magic number of start poll.");
			break;
		}
		devc->status = H4032L_STATUS_TRANSFER;
		max_samples--;
		buffer++;
		/* Fallthrough. */
	case H4032L_STATUS_TRANSFER:
		number_samples = (devc->remaining_samples < max_samples) ? devc->remaining_samples : max_samples;
		devc->remaining_samples -= number_samples;
		packet.type = SR_DF_LOGIC;
		packet.payload = &logic;
		logic.length = number_samples * sizeof(uint32_t);
		logic.unitsize = sizeof(uint32_t);
		logic.data = buffer;
		sr_session_send(sdi, &packet);
		sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples,
			buffer[0], buffer[1]);
		if (devc->remaining_samples == 0) {
			std_session_send_df_end(sdi);
			usb_source_remove(sdi->session, drvc->sr_ctx);
			devc->status = H4032L_STATUS_IDLE;
			if (buffer[number_samples] != H4032L_END_PACKET_MAGIC)
				sr_err("Mismatch magic number of end poll.");
		}
		break;
	}

	if (devc->status != H4032L_STATUS_IDLE) {
		if (cmd) {
			/* Setup new USB cmd packet, reuse transfer object. */
			sr_dbg("New command: %d.", devc->status);
			libusb_fill_bulk_transfer(transfer, usb->devhdl,
				2 | LIBUSB_ENDPOINT_OUT,
				(unsigned char *)&devc->cmd_pkt,
				sizeof(struct h4032l_cmd_pkt),
				h4032l_usb_callback, (void *)sdi,
				H4032L_USB_TIMEOUT);
		} else {
			/* Setup new USB poll packet, reuse transfer object. */
			sr_dbg("Poll: %d.", devc->status);
			libusb_fill_bulk_transfer(transfer, usb->devhdl,
				6 | LIBUSB_ENDPOINT_IN,
				devc->buffer, ARRAY_SIZE(devc->buffer),
				h4032l_usb_callback,
				(void *)sdi, H4032L_USB_TIMEOUT);
		}
		/* Send prepared USB packet. */
		if ((ret = libusb_submit_transfer(transfer)) != 0) {
			sr_err("Failed to submit transfer: %s.",
			       libusb_error_name(ret));
			devc->status = H4032L_STATUS_IDLE;
		}
	} else {
		sr_dbg("Now idle.");
	}

	if (devc->status == H4032L_STATUS_IDLE)
		libusb_free_transfer(transfer);
}

uint16_t h4032l_voltage2pwm(double voltage)
{
	/*
	 * word PwmA - channel A Vref PWM value, pseudocode:
	 * -6V < ThresholdVoltage < +6V
	 * Vref = 1.8 - ThresholdVoltage
	 * if Vref > 10.0
	 * 	Vref = 10.0
	 * if Vref < -5.0
	 * 	Vref = -5.0
	 * pwm = ToInt((Vref + 5.0) / 15.0 * 4096.0)
	 * if pwm > 4095
	 * 	pwm = 4095
	 */
	voltage = 1.8 - voltage;
	if (voltage > 10.0)
		voltage = 10.0;
	else if (voltage < -5.0)
		voltage = -5.0;

	return (uint16_t) ((voltage + 5.0) * (4096.0 / 15.0));
}

SR_PRIV int h4032l_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	struct sr_usb_dev_inst *usb = sdi->conn;
	struct libusb_transfer *transfer;
	unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
	int ret;

	/* Send reset command to arm the logic analyzer. */
	if ((ret = libusb_control_transfer(usb->devhdl,
		LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, CMD_RESET,
		0x00, 0x00, buffer, ARRAY_SIZE(buffer), H4032L_USB_TIMEOUT)) < 0) {
		sr_err("Failed to send vendor request %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	/* Wait for reset vendor request. */
	g_usleep(20 * 1000);

	/* Send configure command. */
	devc->cmd_pkt.cmd = CMD_CONFIGURE;
	devc->status = H4032L_STATUS_CMD_CONFIGURE;
	devc->remaining_samples = devc->cmd_pkt.sample_size;

	transfer = libusb_alloc_transfer(0);

	libusb_fill_bulk_transfer(transfer, usb->devhdl,
		2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt,
		sizeof(struct h4032l_cmd_pkt), h4032l_usb_callback,
		(void *)sdi, H4032L_USB_TIMEOUT);

	if ((ret = libusb_submit_transfer(transfer)) != 0) {
		sr_err("Failed to submit transfer: %s.", libusb_error_name(ret));
		libusb_free_transfer(transfer);
		return SR_ERR;
	}

	std_session_send_df_header(sdi);

	return SR_OK;
}

SR_PRIV int h4032l_dev_open(struct sr_dev_inst *sdi)
{
	struct drv_context *drvc = sdi->driver->context;
	struct sr_usb_dev_inst *usb = sdi->conn;
	struct libusb_device_descriptor des;
	libusb_device **devlist;
	int ret = SR_ERR, i, device_count;
	char connection_id[64];

	device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	if (device_count < 0) {
		sr_err("Failed to get device list: %s.",
		       libusb_error_name(device_count));
		return SR_ERR;
	}

	for (i = 0; i < device_count; i++) {
		libusb_get_device_descriptor(devlist[i], &des);

		if (des.idVendor != H4032L_USB_VENDOR ||
		    des.idProduct != H4032L_USB_PRODUCT)
			continue;

		if ((sdi->status == SR_ST_INITIALIZING) ||
		    (sdi->status == SR_ST_INACTIVE)) {
			/* Check device by its physical USB bus/port address. */
			usb_get_port_path(devlist[i], connection_id,
					  sizeof(connection_id));
			if (strcmp(sdi->connection_id, connection_id))
				/* This is not the one. */
				continue;
		}

		if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
			if (usb->address == 0xff)
				/*
				 * First time we touch this device after FW
				 * upload, so we don't know the address yet.
				 */
				usb->address =
				    libusb_get_device_address(devlist[i]);
		} else {
			sr_err("Failed to open device: %s.",
			       libusb_error_name(ret));
			ret = SR_ERR;
			break;
		}

		ret = SR_OK;
		break;
	}

	libusb_free_device_list(devlist, 1);
	return ret;
}
Commit	Line	Data
6a25fa42 AZ	1	/*
	2	* This file is part of the libsigrok project.
	3	*
5089a143 AZ	4	* Copyright (C) 2016 Andreas Zschunke <andreas.zschunke@gmx.net>
	5	* Copyright (C) 2017 Andrej Valek <andy@skyrain.eu>
	6	* Copyright (C) 2017 Uwe Hermann <uwe@hermann-uwe.de>
6a25fa42 AZ	7	*
	8	* This program is free software: you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation, either version 3 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	20	*/
	21
	22	#include <config.h>
	23	#include "protocol.h"
	24
5089a143 AZ	25	#define H4032L_USB_TIMEOUT 500
	26
	27	enum h4032l_cmd {
74c4c174 AV	28	CMD_RESET = 0x00b3, /* Also arms the logic analyzer. */
74c4c174 AV	29	CMD_CONFIGURE = 0x2b1a,
5089a143 AZ	30	CMD_STATUS = 0x4b3a,
	31	CMD_GET = 0x6b5a
	32	};
	33
e80e1858	34	struct h4032l_status_packet {
5089a143 AZ	35	uint32_t magic;
	36	uint32_t values;
	37	uint32_t status;
	38	};
	39
	40	SR_PRIV int h4032l_receive_data(int fd, int revents, void *cb_data)
6a25fa42	41	{
5089a143 AZ	42	struct timeval tv;
5089a143 AZ	43	struct drv_context *drvc;
6a25fa42 AZ	44
6a25fa42 AZ	45	(void)fd;
5089a143 AZ	46	(void)revents;
	47
	48	drvc = (struct drv_context *)cb_data;
	49
	50	tv.tv_sec = tv.tv_usec = 0;
	51	libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
6a25fa42	52
5089a143 AZ	53	return TRUE;
5089a143 AZ	54	}
6a25fa42	55
5089a143 AZ	56	void LIBUSB_CALL h4032l_usb_callback(struct libusb_transfer *transfer)
	57	{
	58	const struct sr_dev_inst *sdi = transfer->user_data;
	59	struct dev_context *devc = sdi->priv;
	60	struct drv_context *drvc = sdi->driver->context;
	61	struct sr_usb_dev_inst *usb = sdi->conn;
	62	gboolean cmd = FALSE;
	63	uint32_t max_samples = 512 / sizeof(uint32_t);
	64	uint32_t *buffer;
	65	struct h4032l_status_packet *status;
	66	struct sr_datafeed_packet packet;
	67	struct sr_datafeed_logic logic;
	68	uint32_t number_samples;
	69	int ret;
6a25fa42	70
74c4c174 AV	71	if (transfer->status != LIBUSB_TRANSFER_COMPLETED)
74c4c174 AV	72	sr_dbg("%s error: %d.", __func__, transfer->status);
6a25fa42	73
5089a143 AZ	74	buffer = (uint32_t *)transfer->buffer;
	75
	76	switch (devc->status) {
	77	case H4032L_STATUS_IDLE:
	78	sr_err("USB callback called in idle.");
	79	break;
	80	case H4032L_STATUS_CMD_CONFIGURE:
	81	/* Select status request as next. */
	82	cmd = TRUE;
	83	devc->cmd_pkt.cmd = CMD_STATUS;
	84	devc->status = H4032L_STATUS_CMD_STATUS;
	85	break;
	86	case H4032L_STATUS_CMD_STATUS:
	87	/* Select status request as next. */
	88	devc->status = H4032L_STATUS_RESPONSE_STATUS;
	89	break;
	90	case H4032L_STATUS_RESPONSE_STATUS:
	91	/*
	92	* Check magic and if status is complete, then select
	93	* First Transfer as next.
	94	*/
	95	status = (struct h4032l_status_packet *)transfer->buffer;
	96	if (status->magic != H4032L_STATUS_PACKET_MAGIC) {
74c4c174	97	devc->status = H4032L_STATUS_RESPONSE_STATUS;
5089a143 AZ	98	} else if (status->status == 2) {
	99	devc->status = H4032L_STATUS_RESPONSE_STATUS_CONTINUE;
	100	} else {
	101	devc->status = H4032L_STATUS_RESPONSE_STATUS_RETRY;
	102	}
	103	break;
	104	case H4032L_STATUS_RESPONSE_STATUS_RETRY:
	105	devc->status = H4032L_STATUS_CMD_STATUS;
	106	devc->cmd_pkt.cmd = CMD_STATUS;
	107	cmd = TRUE;
	108	break;
	109	case H4032L_STATUS_RESPONSE_STATUS_CONTINUE:
	110	devc->status = H4032L_STATUS_CMD_GET;
	111	devc->cmd_pkt.cmd = CMD_GET;
	112	cmd = TRUE;
	113	break;
	114	case H4032L_STATUS_CMD_GET:
	115	devc->status = H4032L_STATUS_FIRST_TRANSFER;
	116	break;
	117	case H4032L_STATUS_FIRST_TRANSFER:
74c4c174	118	/* Drop packets until H4032L_START_PACKET_MAGIC. */
5089a143	119	if (buffer[0] != H4032L_START_PACKET_MAGIC) {
74c4c174	120	sr_dbg("Mismatch magic number of start poll.");
5089a143 AZ	121	break;
	122	}
	123	devc->status = H4032L_STATUS_TRANSFER;
	124	max_samples--;
	125	buffer++;
97200156	126	/* Fallthrough. */
5089a143 AZ	127	case H4032L_STATUS_TRANSFER:
	128	number_samples = (devc->remaining_samples < max_samples) ? devc->remaining_samples : max_samples;
	129	devc->remaining_samples -= number_samples;
	130	packet.type = SR_DF_LOGIC;
	131	packet.payload = &logic;
	132	logic.length = number_samples * sizeof(uint32_t);
	133	logic.unitsize = sizeof(uint32_t);
	134	logic.data = buffer;
	135	sr_session_send(sdi, &packet);
	136	sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples,
	137	buffer[0], buffer[1]);
	138	if (devc->remaining_samples == 0) {
	139	std_session_send_df_end(sdi);
	140	usb_source_remove(sdi->session, drvc->sr_ctx);
	141	devc->status = H4032L_STATUS_IDLE;
	142	if (buffer[number_samples] != H4032L_END_PACKET_MAGIC)
	143	sr_err("Mismatch magic number of end poll.");
	144	}
	145	break;
	146	}
	147
	148	if (devc->status != H4032L_STATUS_IDLE) {
	149	if (cmd) {
	150	/* Setup new USB cmd packet, reuse transfer object. */
	151	sr_dbg("New command: %d.", devc->status);
	152	libusb_fill_bulk_transfer(transfer, usb->devhdl,
	153	2 \| LIBUSB_ENDPOINT_OUT,
	154	(unsigned char *)&devc->cmd_pkt,
	155	sizeof(struct h4032l_cmd_pkt),
	156	h4032l_usb_callback, (void *)sdi,
	157	H4032L_USB_TIMEOUT);
	158	} else {
	159	/* Setup new USB poll packet, reuse transfer object. */
	160	sr_dbg("Poll: %d.", devc->status);
	161	libusb_fill_bulk_transfer(transfer, usb->devhdl,
	162	6 \| LIBUSB_ENDPOINT_IN,
	163	devc->buffer, ARRAY_SIZE(devc->buffer),
	164	h4032l_usb_callback,
	165	(void *)sdi, H4032L_USB_TIMEOUT);
	166	}
4868f15a	167	/* Send prepared USB packet. */
5089a143 AZ	168	if ((ret = libusb_submit_transfer(transfer)) != 0) {
	169	sr_err("Failed to submit transfer: %s.",
	170	libusb_error_name(ret));
	171	devc->status = H4032L_STATUS_IDLE;
	172	}
	173	} else {
	174	sr_dbg("Now idle.");
	175	}
	176
	177	if (devc->status == H4032L_STATUS_IDLE)
	178	libusb_free_transfer(transfer);
	179	}
	180
	181	uint16_t h4032l_voltage2pwm(double voltage)
	182	{
	183	/*
	184	* word PwmA - channel A Vref PWM value, pseudocode:
	185	* -6V < ThresholdVoltage < +6V
	186	* Vref = 1.8 - ThresholdVoltage
	187	* if Vref > 10.0
	188	* Vref = 10.0
	189	* if Vref < -5.0
	190	* Vref = -5.0
	191	* pwm = ToInt((Vref + 5.0) / 15.0 * 4096.0)
	192	* if pwm > 4095
	193	* pwm = 4095
	194	*/
	195	voltage = 1.8 - voltage;
	196	if (voltage > 10.0)
	197	voltage = 10.0;
	198	else if (voltage < -5.0)
	199	voltage = -5.0;
	200
	201	return (uint16_t) ((voltage + 5.0) * (4096.0 / 15.0));
	202	}
	203
	204	SR_PRIV int h4032l_start(const struct sr_dev_inst *sdi)
	205	{
	206	struct dev_context *devc = sdi->priv;
	207	struct sr_usb_dev_inst *usb = sdi->conn;
	208	struct libusb_transfer *transfer;
74c4c174	209	unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
5089a143 AZ	210	int ret;
5089a143 AZ	211
74c4c174 AV	212	/* Send reset command to arm the logic analyzer. */
	213	if ((ret = libusb_control_transfer(usb->devhdl,
	214	LIBUSB_REQUEST_TYPE_VENDOR \| LIBUSB_ENDPOINT_OUT, CMD_RESET,
	215	0x00, 0x00, buffer, ARRAY_SIZE(buffer), H4032L_USB_TIMEOUT)) < 0) {
	216	sr_err("Failed to send vendor request %s.", libusb_error_name(ret));
	217	return SR_ERR;
	218	}
	219
	220	/* Wait for reset vendor request. */
	221	g_usleep(20 * 1000);
	222
	223	/* Send configure command. */
5089a143 AZ	224	devc->cmd_pkt.cmd = CMD_CONFIGURE;
	225	devc->status = H4032L_STATUS_CMD_CONFIGURE;
	226	devc->remaining_samples = devc->cmd_pkt.sample_size;
	227
	228	transfer = libusb_alloc_transfer(0);
	229
	230	libusb_fill_bulk_transfer(transfer, usb->devhdl,
	231	2 \| LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt,
	232	sizeof(struct h4032l_cmd_pkt), h4032l_usb_callback,
	233	(void *)sdi, H4032L_USB_TIMEOUT);
	234
	235	if ((ret = libusb_submit_transfer(transfer)) != 0) {
	236	sr_err("Failed to submit transfer: %s.", libusb_error_name(ret));
	237	libusb_free_transfer(transfer);
	238	return SR_ERR;
	239	}
	240
	241	std_session_send_df_header(sdi);
	242
	243	return SR_OK;
	244	}
	245
	246	SR_PRIV int h4032l_dev_open(struct sr_dev_inst *sdi)
	247	{
	248	struct drv_context *drvc = sdi->driver->context;
	249	struct sr_usb_dev_inst *usb = sdi->conn;
	250	struct libusb_device_descriptor des;
	251	libusb_device **devlist;
	252	int ret = SR_ERR, i, device_count;
	253	char connection_id[64];
	254
	255	device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	256	if (device_count < 0) {
	257	sr_err("Failed to get device list: %s.",
	258	libusb_error_name(device_count));
	259	return SR_ERR;
	260	}
	261
	262	for (i = 0; i < device_count; i++) {
	263	libusb_get_device_descriptor(devlist[i], &des);
	264
	265	if (des.idVendor != H4032L_USB_VENDOR \|\|
	266	des.idProduct != H4032L_USB_PRODUCT)
	267	continue;
	268
	269	if ((sdi->status == SR_ST_INITIALIZING) \|\|
	270	(sdi->status == SR_ST_INACTIVE)) {
	271	/* Check device by its physical USB bus/port address. */
	272	usb_get_port_path(devlist[i], connection_id,
	273	sizeof(connection_id));
	274	if (strcmp(sdi->connection_id, connection_id))
	275	/* This is not the one. */
	276	continue;
	277	}
	278
	279	if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
	280	if (usb->address == 0xff)
	281	/*
	282	* First time we touch this device after FW
	283	* upload, so we don't know the address yet.
	284	*/
	285	usb->address =
	286	libusb_get_device_address(devlist[i]);
	287	} else {
288	sr_err("Failed to open device: %s.",
289	libusb_error_name(ret));
290	ret = SR_ERR;
291	break;
292	}
293
294	ret = SR_OK;
295	break;
296	}
297
298	libusb_free_device_list(devlist, 1);
299	return ret;
6a25fa42	300	}