libsigrok/hardware/lascar-el-usb/protocol.h

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
*
* 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/>.
*/
#ifndef LIBSIGROK_HARDWARE_LASCAR_EL_USB_PROTOCOL_H
#define LIBSIGROK_HARDWARE_LASCAR_EL_USB_PROTOCOL_H
#include <stdint.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#define LOG_PREFIX "lascar-el-usb"
#define LASCAR_VENDOR "Lascar"
#define LASCAR_INTERFACE 0
#define LASCAR_EP_IN 0x82
#define LASCAR_EP_OUT 2
/* Max 100ms for a device to positively identify. */
#define SCAN_TIMEOUT 100000
#define MAX_CONFIGBLOCK_SIZE 256
/** Private, per-device-instance driver context. */
struct dev_context {
void *cb_data;
const struct elusb_profile *profile;
/* Generic EL-USB */
unsigned char config[MAX_CONFIGBLOCK_SIZE];
unsigned int log_size;
unsigned int rcvd_bytes;
unsigned int sample_size;
unsigned int logged_samples;
unsigned int rcvd_samples;
uint64_t limit_samples;
/* Model-specific */
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/* EL-USB-CO: these are something like scaling and calibration values
* fixed per device, used to convert the sample values to CO ppm. */
float co_high;
float co_low;
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/* Temperature units as stored in the device config. */
int temp_unit;
};
enum {
LOG_UNSUPPORTED,
LOG_TEMP_RH,
LOG_CO,
};
struct elusb_profile {
int modelid;
char *modelname;
int logformat;
};
SR_PRIV int lascar_get_config(libusb_device_handle *dev_hdl,
unsigned char *configblock, int *configlen);
SR_PRIV struct sr_dev_inst *lascar_scan(int bus, int address);
SR_PRIV int lascar_el_usb_handle_events(int fd, int revents, void *cb_data);
SR_PRIV void lascar_el_usb_receive_transfer(struct libusb_transfer *transfer);
SR_PRIV int lascar_start_logging(const struct sr_dev_inst *sdi);
SR_PRIV int lascar_stop_logging(const struct sr_dev_inst *sdi);
SR_PRIV int lascar_is_logging(const struct sr_dev_inst *sdi);
SR_PRIV int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
#endif