libsigrok/hardware/fx2lafw/protocol.h

115 lines
3.4 KiB
C

/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
* 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/>.
*/
#ifndef LIBSIGROK_HARDWARE_FX2LAFW_PROTOCOL_H
#define LIBSIGROK_HARDWARE_FX2LAFW_PROTOCOL_H
#include <glib.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <libusb.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#define LOG_PREFIX "fx2lafw"
#define USB_INTERFACE 0
#define USB_CONFIGURATION 1
#define NUM_TRIGGER_STAGES 4
#define TRIGGER_TYPE "01"
#define MAX_RENUM_DELAY_MS 3000
#define NUM_SIMUL_TRANSFERS 32
#define MAX_EMPTY_TRANSFERS (NUM_SIMUL_TRANSFERS * 2)
#define FX2LAFW_REQUIRED_VERSION_MAJOR 1
#define MAX_8BIT_SAMPLE_RATE SR_MHZ(24)
#define MAX_16BIT_SAMPLE_RATE SR_MHZ(12)
/* 6 delay states of up to 256 clock ticks */
#define MAX_SAMPLE_DELAY (6 * 256)
/* Software trigger implementation: positive values indicate trigger stage. */
#define TRIGGER_FIRED -1
#define DEV_CAPS_16BIT_POS 0
#define DEV_CAPS_16BIT (1 << DEV_CAPS_16BIT_POS)
struct fx2lafw_profile {
uint16_t vid;
uint16_t pid;
const char *vendor;
const char *model;
const char *model_version;
const char *firmware;
uint32_t dev_caps;
};
struct dev_context {
const struct fx2lafw_profile *profile;
/*
* Since we can't keep track of an fx2lafw device after upgrading
* the firmware (it renumerates into a different device address
* after the upgrade) this is like a global lock. No device will open
* until a proper delay after the last device was upgraded.
*/
int64_t fw_updated;
/* Device/capture settings */
uint64_t cur_samplerate;
uint64_t limit_samples;
/* Operational settings */
gboolean sample_wide;
uint16_t trigger_mask[NUM_TRIGGER_STAGES];
uint16_t trigger_value[NUM_TRIGGER_STAGES];
int trigger_stage;
uint16_t trigger_buffer[NUM_TRIGGER_STAGES];
int num_samples;
int submitted_transfers;
int empty_transfer_count;
void *cb_data;
unsigned int num_transfers;
struct libusb_transfer **transfers;
struct sr_context *ctx;
};
SR_PRIV int fx2lafw_command_start_acquisition(libusb_device_handle *devhdl,
uint64_t samplerate, gboolean samplewide);
SR_PRIV gboolean fx2lafw_check_conf_profile(libusb_device *dev);
SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di);
SR_PRIV int fx2lafw_configure_probes(const struct sr_dev_inst *sdi);
SR_PRIV struct dev_context *fx2lafw_dev_new(void);
SR_PRIV void fx2lafw_abort_acquisition(struct dev_context *devc);
SR_PRIV void fx2lafw_receive_transfer(struct libusb_transfer *transfer);
SR_PRIV size_t fx2lafw_get_buffer_size(struct dev_context *devc);
SR_PRIV unsigned int fx2lafw_get_number_of_transfers(struct dev_context *devc);
SR_PRIV unsigned int fx2lafw_get_timeout(struct dev_context *devc);
#endif