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libsigrok/libsigrok-internal.h

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 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/>.
*/
/** @file
* @internal
*/
#ifndef LIBSIGROK_LIBSIGROK_INTERNAL_H
#define LIBSIGROK_LIBSIGROK_INTERNAL_H
#include <stdarg.h>
#include <glib.h>
#include "config.h" /* Needed for HAVE_LIBUSB_1_0 and others. */
#ifdef HAVE_LIBUSB_1_0
#include <libusb.h>
#endif
#ifdef HAVE_LIBSERIALPORT
#include <libserialport.h>
#endif
/**
* @file
*
* libsigrok private header file, only to be used internally.
*/
/*--- Macros ----------------------------------------------------------------*/
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#endif
#ifndef ARRAY_AND_SIZE
#define ARRAY_AND_SIZE(a) (a), ARRAY_SIZE(a)
#endif
/**
* Read a 16 bits big endian integer out of memory.
* @param x a pointer to the input memory
* @return the corresponding integer
*/
#define RB16(x) (((unsigned)((const uint8_t*)(x))[0] << 8) | \
(unsigned)((const uint8_t*)(x))[1])
/**
* Read a 16 bits little endian integer out of memory.
* @param x a pointer to the input memory
* @return the corresponding integer
*/
#define RL16(x) (((unsigned)((const uint8_t*)(x))[1] << 8) | \
(unsigned)((const uint8_t*)(x))[0])
/**
* Read a 32 bits big endian integer out of memory.
* @param x a pointer to the input memory
* @return the corresponding integer
*/
#define RB32(x) (((unsigned)((const uint8_t*)(x))[0] << 24) | \
((unsigned)((const uint8_t*)(x))[1] << 16) | \
((unsigned)((const uint8_t*)(x))[2] << 8) | \
(unsigned)((const uint8_t*)(x))[3])
/**
* Read a 32 bits little endian integer out of memory.
* @param x a pointer to the input memory
* @return the corresponding integer
*/
#define RL32(x) (((unsigned)((const uint8_t*)(x))[3] << 24) | \
((unsigned)((const uint8_t*)(x))[2] << 16) | \
((unsigned)((const uint8_t*)(x))[1] << 8) | \
(unsigned)((const uint8_t*)(x))[0])
/* Portability fixes for FreeBSD. */
#ifdef __FreeBSD__
#define LIBUSB_CLASS_APPLICATION 0xfe
#define libusb_handle_events_timeout_completed(ctx, tv, c) \
libusb_handle_events_timeout(ctx, tv)
#endif
struct sr_context {
#ifdef HAVE_LIBUSB_1_0
libusb_context *libusb_ctx;
gboolean usb_source_present;
#ifdef _WIN32
GThread *usb_thread;
gboolean usb_thread_running;
GMutex usb_mutex;
HANDLE usb_event;
GPollFD usb_pollfd;
sr_receive_data_callback_t usb_cb;
void *usb_cb_data;
#endif
#endif
};
#ifdef HAVE_LIBUSB_1_0
/** USB device instance */
struct sr_usb_dev_inst {
/** USB bus */
uint8_t bus;
/** Device address on USB bus */
uint8_t address;
/** libusb device handle */
struct libusb_device_handle *devhdl;
};
#endif
#ifdef HAVE_LIBSERIALPORT
#define SERIAL_PARITY_NONE SP_PARITY_NONE
#define SERIAL_PARITY_EVEN SP_PARITY_EVEN
#define SERIAL_PARITY_ODD SP_PARITY_ODD
struct sr_serial_dev_inst {
/** Port name, e.g. '/dev/tty42'. */
char *port;
/** Comm params for serial_set_paramstr(). */
char *serialcomm;
/** Port is non-blocking. */
int nonblocking;
/** libserialport port handle */
struct sp_port *data;
/** libserialport event set */
struct sp_event_set *event_set;
/** GPollFDs for event polling */
GPollFD *pollfds;
};
#endif
struct sr_usbtmc_dev_inst {
char *device;
int fd;
};
/* Private driver context. */
struct drv_context {
/** sigrok context */
struct sr_context *sr_ctx;
GSList *instances;
};
/*--- log.c -----------------------------------------------------------------*/
SR_PRIV int sr_log(int loglevel, const char *format, ...);
SR_PRIV int sr_spew(const char *format, ...);
SR_PRIV int sr_dbg(const char *format, ...);
SR_PRIV int sr_info(const char *format, ...);
SR_PRIV int sr_warn(const char *format, ...);
SR_PRIV int sr_err(const char *format, ...);
/* Message logging helpers with subsystem-specific prefix string. */
#ifndef NO_LOG_WRAPPERS
#define sr_log(l, s, args...) sr_log(l, "%s: " s, LOG_PREFIX, ## args)
#define sr_spew(s, args...) sr_spew("%s: " s, LOG_PREFIX, ## args)
#define sr_dbg(s, args...) sr_dbg("%s: " s, LOG_PREFIX, ## args)
#define sr_info(s, args...) sr_info("%s: " s, LOG_PREFIX, ## args)
#define sr_warn(s, args...) sr_warn("%s: " s, LOG_PREFIX, ## args)
#define sr_err(s, args...) sr_err("%s: " s, LOG_PREFIX, ## args)
#endif
/*--- device.c --------------------------------------------------------------*/
SR_PRIV struct sr_probe *sr_probe_new(int index, int type,
gboolean enabled, const char *name);
/* Generic device instances */
SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status,
const char *vendor, const char *model, const char *version);
SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi);
#ifdef HAVE_LIBUSB_1_0
/* USB-specific instances */
SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
uint8_t address, struct libusb_device_handle *hdl);
SR_PRIV GSList *sr_usb_find_usbtmc(libusb_context *usb_ctx);
SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb);
#endif
#ifdef HAVE_LIBSERIALPORT
/* Serial-specific instances */
SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port,
const char *serialcomm);
SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial);
#endif
/* USBTMC-specific instances */
SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device);
SR_PRIV void sr_usbtmc_dev_inst_free(struct sr_usbtmc_dev_inst *usbtmc);
/*--- hwdriver.c ------------------------------------------------------------*/
SR_PRIV void sr_hw_cleanup_all(void);
SR_PRIV struct sr_config *sr_config_new(int key, GVariant *data);
SR_PRIV void sr_config_free(struct sr_config *src);
SR_PRIV int sr_source_remove(int fd);
SR_PRIV int sr_source_add(int fd, int events, int timeout,
sr_receive_data_callback_t cb, void *cb_data);
/*--- session.c -------------------------------------------------------------*/
struct sr_session {
/** List of struct sr_dev pointers. */
GSList *devs;
/** List of struct datafeed_callback pointers. */
GSList *datafeed_callbacks;
GTimeVal starttime;
gboolean running;
unsigned int num_sources;
/*
* Both "sources" and "pollfds" are of the same size and contain pairs
* of descriptor and callback function. We can not embed the GPollFD
* into the source struct since we want to be able to pass the array
* of all poll descriptors to g_poll().
*/
struct source *sources;
GPollFD *pollfds;
int source_timeout;
/*
* These are our synchronization primitives for stopping the session in
* an async fashion. We need to make sure the session is stopped from
* within the session thread itself.
*/
/** Mutex protecting access to abort_session. */
GMutex stop_mutex;
/** Abort current session. See sr_session_stop(). */
gboolean abort_session;
};
SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi,
const struct sr_datafeed_packet *packet);
SR_PRIV int sr_session_stop_sync(void);
SR_PRIV int sr_sessionfile_check(const char *filename);
/*--- std.c -----------------------------------------------------------------*/
typedef int (*dev_close_t)(struct sr_dev_inst *sdi);
typedef void (*std_dev_clear_t)(void *priv);
SR_PRIV int std_init(struct sr_context *sr_ctx, struct sr_dev_driver *di,
const char *prefix);
#ifdef HAVE_LIBSERIALPORT
SR_PRIV int std_serial_dev_open(struct sr_dev_inst *sdi);
SR_PRIV int std_serial_dev_acquisition_stop(struct sr_dev_inst *sdi,
void *cb_data, dev_close_t dev_close_fn,
struct sr_serial_dev_inst *serial, const char *prefix);
#endif
SR_PRIV int std_session_send_df_header(const struct sr_dev_inst *sdi,
const char *prefix);
SR_PRIV int std_dev_clear(const struct sr_dev_driver *driver,
std_dev_clear_t clear_private);
SR_PRIV int std_serial_dev_close(struct sr_dev_inst *sdi);
/*--- strutil.c -------------------------------------------------------------*/
SR_PRIV int sr_atol(const char *str, long *ret);
SR_PRIV int sr_atoi(const char *str, int *ret);
SR_PRIV int sr_atod(const char *str, double *ret);
SR_PRIV int sr_atof(const char *str, float *ret);
SR_PRIV int sr_atof_ascii(const char *str, float *ret);
/*--- hardware/common/serial.c ----------------------------------------------*/
#ifdef HAVE_LIBSERIALPORT
enum {
SERIAL_RDWR = 1,
SERIAL_RDONLY = 2,
SERIAL_NONBLOCK = 4,
};
typedef gboolean (*packet_valid_t)(const uint8_t *buf);
SR_PRIV int serial_open(struct sr_serial_dev_inst *serial, int flags);
SR_PRIV int serial_close(struct sr_serial_dev_inst *serial);
SR_PRIV int serial_flush(struct sr_serial_dev_inst *serial);
SR_PRIV int serial_write(struct sr_serial_dev_inst *serial,
const void *buf, size_t count);
SR_PRIV int serial_write_blocking(struct sr_serial_dev_inst *serial,
const void *buf, size_t count);
SR_PRIV int serial_write_nonblocking(struct sr_serial_dev_inst *serial,
const void *buf, size_t count);
SR_PRIV int serial_read(struct sr_serial_dev_inst *serial, void *buf,
size_t count);
SR_PRIV int serial_read_blocking(struct sr_serial_dev_inst *serial, void *buf,
size_t count);
SR_PRIV int serial_read_nonblocking(struct sr_serial_dev_inst *serial, void *buf,
size_t count);
SR_PRIV int serial_set_params(struct sr_serial_dev_inst *serial, int baudrate,
int bits, int parity, int stopbits, int flowcontrol, int rts, int dtr);
SR_PRIV int serial_set_paramstr(struct sr_serial_dev_inst *serial,
const char *paramstr);
SR_PRIV int serial_readline(struct sr_serial_dev_inst *serial, char **buf,
int *buflen, gint64 timeout_ms);
SR_PRIV int serial_stream_detect(struct sr_serial_dev_inst *serial,
uint8_t *buf, size_t *buflen,
size_t packet_size, packet_valid_t is_valid,
uint64_t timeout_ms, int baudrate);
SR_PRIV int sr_serial_extract_options(GSList *options, const char **serial_device,
const char **serial_options);
SR_PRIV int serial_source_add(struct sr_serial_dev_inst *serial, int events,
int timeout, sr_receive_data_callback_t cb, void *cb_data);
SR_PRIV int serial_source_remove(struct sr_serial_dev_inst *serial);
#endif
/*--- hardware/common/ezusb.c -----------------------------------------------*/
#ifdef HAVE_LIBUSB_1_0
SR_PRIV int ezusb_reset(struct libusb_device_handle *hdl, int set_clear);
SR_PRIV int ezusb_install_firmware(libusb_device_handle *hdl,
const char *filename);
SR_PRIV int ezusb_upload_firmware(libusb_device *dev, int configuration,
const char *filename);
#endif
/*--- hardware/common/usb.c -------------------------------------------------*/
#ifdef HAVE_LIBUSB_1_0
SR_PRIV GSList *sr_usb_find(libusb_context *usb_ctx, const char *conn);
SR_PRIV int sr_usb_open(libusb_context *usb_ctx, struct sr_usb_dev_inst *usb);
SR_PRIV int usb_source_add(struct sr_context *ctx, int timeout,
sr_receive_data_callback_t cb, void *cb_data);
SR_PRIV int usb_source_remove(struct sr_context *ctx);
#endif
/*--- hardware/common/scpi.c ------------------------------------------------*/
#define SCPI_CMD_IDN "*IDN?"
#define SCPI_CMD_OPC "*OPC?"
enum {
SCPI_CMD_SET_TRIGGER_SOURCE,
SCPI_CMD_SET_TIMEBASE,
SCPI_CMD_SET_VERTICAL_DIV,
SCPI_CMD_SET_TRIGGER_SLOPE,
SCPI_CMD_SET_COUPLING,
SCPI_CMD_SET_HORIZ_TRIGGERPOS,
SCPI_CMD_GET_ANALOG_CHAN_STATE,
SCPI_CMD_GET_DIG_CHAN_STATE,
SCPI_CMD_GET_TIMEBASE,
SCPI_CMD_GET_VERTICAL_DIV,
SCPI_CMD_GET_VERTICAL_OFFSET,
SCPI_CMD_GET_TRIGGER_SOURCE,
SCPI_CMD_GET_HORIZ_TRIGGERPOS,
SCPI_CMD_GET_TRIGGER_SLOPE,
SCPI_CMD_GET_COUPLING,
SCPI_CMD_SET_ANALOG_CHAN_STATE,
SCPI_CMD_SET_DIG_CHAN_STATE,
SCPI_CMD_GET_DIG_POD_STATE,
SCPI_CMD_SET_DIG_POD_STATE,
SCPI_CMD_GET_ANALOG_DATA,
SCPI_CMD_GET_DIG_DATA,
};
struct sr_scpi_hw_info {
char *manufacturer;
char *model;
char *serial_number;
char *firmware_version;
};
struct sr_scpi_dev_inst {
const char *name;
const char *prefix;
int priv_size;
int (*dev_inst_new)(void *priv, const char *resource, char **params,
const char *serialcomm);
int (*open)(void *priv);
int (*source_add)(void *priv, int events,
int timeout, sr_receive_data_callback_t cb, void *cb_data);
int (*source_remove)(void *priv);
int (*send)(void *priv, const char *command);
int (*read_begin)(void *priv);
int (*read_data)(void *priv, char *buf, int maxlen);
int (*read_complete)(void *priv);
int (*close)(void *priv);
void (*free)(void *priv);
void *priv;
};
SR_PRIV struct sr_scpi_dev_inst *scpi_dev_inst_new(const char *resource,
const char *serialcomm);
SR_PRIV int sr_scpi_open(struct sr_scpi_dev_inst *scpi);
SR_PRIV int sr_scpi_source_add(struct sr_scpi_dev_inst *scpi, int events,
int timeout, sr_receive_data_callback_t cb, void *cb_data);
SR_PRIV int sr_scpi_source_remove(struct sr_scpi_dev_inst *scpi);
SR_PRIV int sr_scpi_send(struct sr_scpi_dev_inst *scpi,
const char *format, ...);
SR_PRIV int sr_scpi_send_variadic(struct sr_scpi_dev_inst *scpi,
const char *format, va_list args);
SR_PRIV int sr_scpi_read_begin(struct sr_scpi_dev_inst *scpi);
SR_PRIV int sr_scpi_read_data(struct sr_scpi_dev_inst *scpi, char *buf, int maxlen);
SR_PRIV int sr_scpi_read_complete(struct sr_scpi_dev_inst *scpi);
SR_PRIV int sr_scpi_close(struct sr_scpi_dev_inst *scpi);
SR_PRIV void sr_scpi_free(struct sr_scpi_dev_inst *scpi);
SR_PRIV int sr_scpi_get_string(struct sr_scpi_dev_inst *scpi,
const char *command, char **scpi_response);
SR_PRIV int sr_scpi_get_bool(struct sr_scpi_dev_inst *scpi,
const char *command, gboolean *scpi_response);
SR_PRIV int sr_scpi_get_int(struct sr_scpi_dev_inst *scpi,
const char *command, int *scpi_response);
SR_PRIV int sr_scpi_get_float(struct sr_scpi_dev_inst *scpi,
const char *command, float *scpi_response);
SR_PRIV int sr_scpi_get_double(struct sr_scpi_dev_inst *scpi,
const char *command, double *scpi_response);
SR_PRIV int sr_scpi_get_opc(struct sr_scpi_dev_inst *scpi);
SR_PRIV int sr_scpi_get_floatv(struct sr_scpi_dev_inst *scpi,
const char *command, GArray **scpi_response);
SR_PRIV int sr_scpi_get_uint8v(struct sr_scpi_dev_inst *scpi,
const char *command, GArray **scpi_response);
SR_PRIV int sr_scpi_get_hw_id(struct sr_scpi_dev_inst *scpi,
struct sr_scpi_hw_info **scpi_response);
SR_PRIV void sr_scpi_hw_info_free(struct sr_scpi_hw_info *hw_info);
/*--- hardware/common/dmm/es519xx.c -----------------------------------------*/
/**
* All 11-byte es519xx chips repeat each block twice for each conversion cycle
* so always read 2 blocks at a time.
*/
#define ES519XX_11B_PACKET_SIZE (11 * 2)
#define ES519XX_14B_PACKET_SIZE 14
struct es519xx_info {
gboolean is_judge, is_voltage, is_auto, is_micro, is_current;
gboolean is_milli, is_resistance, is_continuity, is_diode;
gboolean is_frequency, is_rpm, is_capacitance, is_duty_cycle;
gboolean is_temperature, is_celsius, is_fahrenheit;
gboolean is_adp0, is_adp1, is_adp2, is_adp3;
gboolean is_sign, is_batt, is_ol, is_pmax, is_pmin, is_apo;
gboolean is_dc, is_ac, is_vahz, is_min, is_max, is_rel, is_hold;
gboolean is_digit4, is_ul, is_vasel, is_vbar, is_lpf1, is_lpf0, is_rmr;
uint32_t baudrate;
int packet_size;
gboolean alt_functions, fivedigits, clampmeter, selectable_lpf;
};
SR_PRIV gboolean sr_es519xx_2400_11b_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_2400_11b_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
SR_PRIV gboolean sr_es519xx_2400_11b_altfn_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_2400_11b_altfn_parse(const uint8_t *buf,
float *floatval, struct sr_datafeed_analog *analog, void *info);
SR_PRIV gboolean sr_es519xx_19200_11b_5digits_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_19200_11b_5digits_parse(const uint8_t *buf,
float *floatval, struct sr_datafeed_analog *analog, void *info);
SR_PRIV gboolean sr_es519xx_19200_11b_clamp_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_19200_11b_clamp_parse(const uint8_t *buf,
float *floatval, struct sr_datafeed_analog *analog, void *info);
SR_PRIV gboolean sr_es519xx_19200_11b_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_19200_11b_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
SR_PRIV gboolean sr_es519xx_19200_14b_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_19200_14b_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
SR_PRIV gboolean sr_es519xx_19200_14b_sel_lpf_packet_valid(const uint8_t *buf);
SR_PRIV int sr_es519xx_19200_14b_sel_lpf_parse(const uint8_t *buf,
float *floatval, struct sr_datafeed_analog *analog, void *info);
/*--- hardware/common/dmm/fs9922.c ------------------------------------------*/
#define FS9922_PACKET_SIZE 14
struct fs9922_info {
gboolean is_auto, is_dc, is_ac, is_rel, is_hold, is_bpn, is_z1, is_z2;
gboolean is_max, is_min, is_apo, is_bat, is_nano, is_z3, is_micro;
gboolean is_milli, is_kilo, is_mega, is_beep, is_diode, is_percent;
gboolean is_z4, is_volt, is_ampere, is_ohm, is_hfe, is_hertz, is_farad;
gboolean is_celsius, is_fahrenheit;
int bargraph_sign, bargraph_value;
};
SR_PRIV gboolean sr_fs9922_packet_valid(const uint8_t *buf);
SR_PRIV int sr_fs9922_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
SR_PRIV void sr_fs9922_z1_diode(struct sr_datafeed_analog *analog, void *info);
/*--- hardware/common/dmm/fs9721.c ------------------------------------------*/
#define FS9721_PACKET_SIZE 14
struct fs9721_info {
gboolean is_ac, is_dc, is_auto, is_rs232, is_micro, is_nano, is_kilo;
gboolean is_diode, is_milli, is_percent, is_mega, is_beep, is_farad;
gboolean is_ohm, is_rel, is_hold, is_ampere, is_volt, is_hz, is_bat;
gboolean is_c2c1_11, is_c2c1_10, is_c2c1_01, is_c2c1_00, is_sign;
};
SR_PRIV gboolean sr_fs9721_packet_valid(const uint8_t *buf);
SR_PRIV int sr_fs9721_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
SR_PRIV void sr_fs9721_00_temp_c(struct sr_datafeed_analog *analog, void *info);
SR_PRIV void sr_fs9721_01_temp_c(struct sr_datafeed_analog *analog, void *info);
SR_PRIV void sr_fs9721_10_temp_c(struct sr_datafeed_analog *analog, void *info);
SR_PRIV void sr_fs9721_01_10_temp_f_c(struct sr_datafeed_analog *analog, void *info);
SR_PRIV void sr_fs9721_max_c_min(struct sr_datafeed_analog *analog, void *info);
/*--- hardware/common/dmm/m2110.c -----------------------------------------*/
#define BBCGM_M2110_PACKET_SIZE 9
SR_PRIV gboolean sr_m2110_packet_valid(const uint8_t *buf);
SR_PRIV int sr_m2110_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
/*--- hardware/common/dmm/metex14.c -----------------------------------------*/
#define METEX14_PACKET_SIZE 14
struct metex14_info {
gboolean is_ac, is_dc, is_resistance, is_capacity, is_temperature;
gboolean is_diode, is_frequency, is_ampere, is_volt, is_farad;
gboolean is_hertz, is_ohm, is_celsius, is_pico, is_nano, is_micro;
gboolean is_milli, is_kilo, is_mega, is_gain, is_decibel, is_hfe;
gboolean is_unitless;
};
#ifdef HAVE_LIBSERIALPORT
SR_PRIV int sr_metex14_packet_request(struct sr_serial_dev_inst *serial);
#endif
SR_PRIV gboolean sr_metex14_packet_valid(const uint8_t *buf);
SR_PRIV int sr_metex14_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
/*--- hardware/common/dmm/rs9lcd.c ------------------------------------------*/
#define RS9LCD_PACKET_SIZE 9
/* Dummy info struct. The parser does not use it. */
struct rs9lcd_info { int dummy; };
SR_PRIV gboolean sr_rs9lcd_packet_valid(const uint8_t *buf);
SR_PRIV int sr_rs9lcd_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info);
#endif
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