libsigrokhwchronovula8_la_SOURCES = \
api.c \
- driver.c \
- driver.h
+ protocol.c \
+ protocol.h
libsigrokhwchronovula8_la_CFLAGS = \
-I$(top_srcdir)
#include <string.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
-#include "driver.h"
+#include "protocol.h"
SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
static struct sr_dev_driver *di = &chronovu_la8_driver_info;
+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2011-2012 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 2 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <ftdi.h>
-#include <glib.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include "driver.h"
-
-/* Probes are numbered 0-7. */
-SR_PRIV const char *probe_names[NUM_PROBES + 1] = {
- "0",
- "1",
- "2",
- "3",
- "4",
- "5",
- "6",
- "7",
- NULL,
-};
-
-/* This will be initialized via hw_info_get()/SR_DI_SAMPLERATES. */
-SR_PRIV uint64_t supported_samplerates[255 + 1] = { 0 };
-
-/*
- * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz
- * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz
- */
-const struct sr_samplerates samplerates = {
- .low = 0,
- .high = 0,
- .step = 0,
- .list = supported_samplerates,
-};
-
-/* Note: Continuous sampling is not supported by the hardware. */
-SR_PRIV const int hwcaps[] = {
- SR_HWCAP_LOGIC_ANALYZER,
- SR_HWCAP_SAMPLERATE,
- SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */
- SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */
- 0,
-};
-
-SR_PRIV void fill_supported_samplerates_if_needed(void)
-{
- int i;
-
- /* Do nothing if supported_samplerates[] is already filled. */
- if (supported_samplerates[0] != 0)
- return;
-
- /* Fill supported_samplerates[] with the proper values. */
- for (i = 0; i < 255; i++)
- supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1);
- supported_samplerates[255] = 0;
-}
-
-/**
- * Check if the given samplerate is supported by the LA8 hardware.
- *
- * @param samplerate The samplerate (in Hz) to check.
- * @return 1 if the samplerate is supported/valid, 0 otherwise.
- */
-SR_PRIV int is_valid_samplerate(uint64_t samplerate)
-{
- int i;
-
- fill_supported_samplerates_if_needed();
-
- for (i = 0; i < 255; i++) {
- if (supported_samplerates[i] == samplerate)
- return 1;
- }
-
- sr_err("Invalid samplerate (%" PRIu64 "Hz).", samplerate);
-
- return 0;
-}
-
-/**
- * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants.
- *
- * LA8 hardware: sample period = (divcount + 1) * 10ns.
- * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate).
- * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate).
- *
- * @param samplerate The samplerate in Hz.
- * @return The divcount value as needed by the hardware, or 0xff upon errors.
- */
-SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate)
-{
- if (samplerate == 0) {
- sr_err("%s: samplerate was 0.", __func__);
- return 0xff;
- }
-
- if (!is_valid_samplerate(samplerate)) {
- sr_err("%s: Can't get divcount, samplerate invalid.", __func__);
- return 0xff;
- }
-
- return (SR_MHZ(100) / samplerate) - 1;
-}
-
-/**
- * Write data of a certain length to the LA8's FTDI device.
- *
- * @param devc The struct containing private per-device-instance data. Must not
- * be NULL. devc->ftdic must not be NULL either.
- * @param buf The buffer containing the data to write. Must not be NULL.
- * @param size The number of bytes to write. Must be >= 0.
- * @return The number of bytes written, or a negative value upon errors.
- */
-SR_PRIV int la8_write(struct dev_context *devc, uint8_t *buf, int size)
-{
- int bytes_written;
-
- /* Note: Caller checked that devc and devc->ftdic != NULL. */
-
- if (!buf) {
- sr_err("%s: buf was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if (size < 0) {
- sr_err("%s: size was < 0.", __func__);
- return SR_ERR_ARG;
- }
-
- bytes_written = ftdi_write_data(devc->ftdic, buf, size);
-
- if (bytes_written < 0) {
- sr_err("%s: ftdi_write_data: (%d) %s.", __func__,
- bytes_written, ftdi_get_error_string(devc->ftdic));
- (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
- } else if (bytes_written != size) {
- sr_err("%s: bytes to write: %d, bytes written: %d.",
- __func__, size, bytes_written);
- (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
- }
-
- return bytes_written;
-}
-
-/**
- * Read a certain amount of bytes from the LA8's FTDI device.
- *
- * @param devc The struct containing private per-device-instance data. Must not
- * be NULL. devc->ftdic must not be NULL either.
- * @param buf The buffer where the received data will be stored. Must not
- * be NULL.
- * @param size The number of bytes to read. Must be >= 1.
- * @return The number of bytes read, or a negative value upon errors.
- */
-SR_PRIV int la8_read(struct dev_context *devc, uint8_t *buf, int size)
-{
- int bytes_read;
-
- /* Note: Caller checked that devc and devc->ftdic != NULL. */
-
- if (!buf) {
- sr_err("%s: buf was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if (size <= 0) {
- sr_err("%s: size was <= 0.", __func__);
- return SR_ERR_ARG;
- }
-
- bytes_read = ftdi_read_data(devc->ftdic, buf, size);
-
- if (bytes_read < 0) {
- sr_err("%s: ftdi_read_data: (%d) %s.", __func__,
- bytes_read, ftdi_get_error_string(devc->ftdic));
- } else if (bytes_read != size) {
- // sr_err("%s: Bytes to read: %d, bytes read: %d.",
- // __func__, size, bytes_read);
- }
-
- return bytes_read;
-}
-
-SR_PRIV int la8_close(struct dev_context *devc)
-{
- int ret;
-
- if (!devc) {
- sr_err("%s: devc was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if (!devc->ftdic) {
- sr_err("%s: devc->ftdic was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if ((ret = ftdi_usb_close(devc->ftdic)) < 0) {
- sr_err("%s: ftdi_usb_close: (%d) %s.",
- __func__, ret, ftdi_get_error_string(devc->ftdic));
- }
-
- return ret;
-}
-
-/**
- * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic.
- *
- * @param devc The struct containing private per-device-instance data.
- * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments.
- */
-SR_PRIV int la8_close_usb_reset_sequencer(struct dev_context *devc)
-{
- /* Magic sequence of bytes for resetting the LA8 sequencer logic. */
- uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01};
- int ret;
-
- if (!devc) {
- sr_err("%s: devc was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if (!devc->ftdic) {
- sr_err("%s: devc->ftdic was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if (devc->ftdic->usb_dev) {
- /* Reset the LA8 sequencer logic, then wait 100ms. */
- sr_dbg("Resetting sequencer logic.");
- (void) la8_write(devc, buf, 8); /* Ignore errors. */
- g_usleep(100 * 1000);
-
- /* Purge FTDI buffers, then reset and close the FTDI device. */
- sr_dbg("Purging buffers, resetting+closing FTDI device.");
-
- /* Log errors, but ignore them (i.e., don't abort). */
- if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0)
- sr_err("%s: ftdi_usb_purge_buffers: (%d) %s.",
- __func__, ret, ftdi_get_error_string(devc->ftdic));
- if ((ret = ftdi_usb_reset(devc->ftdic)) < 0)
- sr_err("%s: ftdi_usb_reset: (%d) %s.", __func__,
- ret, ftdi_get_error_string(devc->ftdic));
- if ((ret = ftdi_usb_close(devc->ftdic)) < 0)
- sr_err("%s: ftdi_usb_close: (%d) %s.", __func__,
- ret, ftdi_get_error_string(devc->ftdic));
- }
-
- /* Close USB device, deinitialize and free the FTDI context. */
- ftdi_free(devc->ftdic); /* Returns void. */
- devc->ftdic = NULL;
-
- return SR_OK;
-}
-
-/**
- * Reset the ChronoVu LA8.
- *
- * The LA8 must be reset after a failed read/write operation or upon timeouts.
- *
- * @param devc The struct containing private per-device-instance data.
- * @return SR_OK upon success, SR_ERR upon failure.
- */
-SR_PRIV int la8_reset(struct dev_context *devc)
-{
- uint8_t buf[BS];
- time_t done, now;
- int bytes_read;
-
- if (!devc) {
- sr_err("%s: devc was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- if (!devc->ftdic) {
- sr_err("%s: devc->ftdic was NULL.", __func__);
- return SR_ERR_ARG;
- }
-
- sr_dbg("Resetting the device.");
-
- /*
- * Purge pending read data from the FTDI hardware FIFO until
- * no more data is left, or a timeout occurs (after 20s).
- */
- done = 20 + time(NULL);
- do {
- /* TODO: Ignore errors? Check for < 0 at least! */
- bytes_read = la8_read(devc, (uint8_t *)&buf, BS);
- now = time(NULL);
- } while ((done > now) && (bytes_read > 0));
-
- /* Reset the LA8 sequencer logic and close the USB port. */
- (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
-
- sr_dbg("Device reset finished.");
-
- return SR_OK;
-}
-
-SR_PRIV int configure_probes(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- const struct sr_probe *probe;
- const GSList *l;
- uint8_t probe_bit;
- char *tc;
-
- devc = sdi->priv;
- devc->trigger_pattern = 0;
- devc->trigger_mask = 0; /* Default to "don't care" for all probes. */
-
- for (l = sdi->probes; l; l = l->next) {
- probe = (struct sr_probe *)l->data;
-
- if (!probe) {
- sr_err("%s: probe was NULL.", __func__);
- return SR_ERR;
- }
-
- /* Skip disabled probes. */
- if (!probe->enabled)
- continue;
-
- /* Skip (enabled) probes with no configured trigger. */
- if (!probe->trigger)
- continue;
-
- /* Note: Must only be run if probe->trigger != NULL. */
- if (probe->index < 0 || probe->index > 7) {
- sr_err("%s: Invalid probe index %d, must be "
- "between 0 and 7.", __func__, probe->index);
- return SR_ERR;
- }
-
- probe_bit = (1 << (probe->index));
-
- /* Configure the probe's trigger mask and trigger pattern. */
- for (tc = probe->trigger; tc && *tc; tc++) {
- devc->trigger_mask |= probe_bit;
-
- /* Sanity check, LA8 only supports low/high trigger. */
- if (*tc != '0' && *tc != '1') {
- sr_err("%s: Invalid trigger '%c', only "
- "'0'/'1' supported.", __func__, *tc);
- return SR_ERR;
- }
-
- if (*tc == '1')
- devc->trigger_pattern |= probe_bit;
- }
- }
-
- sr_dbg("Trigger mask = 0x%x, trigger pattern = 0x%x.",
- devc->trigger_mask, devc->trigger_pattern);
-
- return SR_OK;
-}
-
-SR_PRIV int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate)
-{
- struct dev_context *devc;
-
- /* Note: Caller checked that sdi and sdi->priv != NULL. */
-
- devc = sdi->priv;
-
- sr_spew("Trying to set samplerate to %" PRIu64 "Hz.", samplerate);
-
- fill_supported_samplerates_if_needed();
-
- /* Check if this is a samplerate supported by the hardware. */
- if (!is_valid_samplerate(samplerate))
- return SR_ERR;
-
- /* Set the new samplerate. */
- devc->cur_samplerate = samplerate;
-
- sr_dbg("Samplerate set to %" PRIu64 "Hz.", devc->cur_samplerate);
-
- return SR_OK;
-}
-
-/**
- * Get a block of data from the LA8.
- *
- * @param devc The struct containing private per-device-instance data. Must not
- * be NULL. devc->ftdic must not be NULL either.
- * @return SR_OK upon success, or SR_ERR upon errors.
- */
-SR_PRIV int la8_read_block(struct dev_context *devc)
-{
- int i, byte_offset, m, mi, p, index, bytes_read;
- time_t now;
-
- /* Note: Caller checked that devc and devc->ftdic != NULL. */
-
- sr_spew("Reading block %d.", devc->block_counter);
-
- bytes_read = la8_read(devc, devc->mangled_buf, BS);
-
- /* If first block read got 0 bytes, retry until success or timeout. */
- if ((bytes_read == 0) && (devc->block_counter == 0)) {
- do {
- sr_spew("Reading block 0 (again).");
- bytes_read = la8_read(devc, devc->mangled_buf, BS);
- /* TODO: How to handle read errors here? */
- now = time(NULL);
- } while ((devc->done > now) && (bytes_read == 0));
- }
-
- /* Check if block read was successful or a timeout occured. */
- if (bytes_read != BS) {
- sr_err("Trigger timed out. Bytes read: %d.", bytes_read);
- (void) la8_reset(devc); /* Ignore errors. */
- return SR_ERR;
- }
-
- /* De-mangle the data. */
- sr_spew("Demangling block %d.", devc->block_counter);
- byte_offset = devc->block_counter * BS;
- m = byte_offset / (1024 * 1024);
- mi = m * (1024 * 1024);
- for (i = 0; i < BS; i++) {
- p = i & (1 << 0);
- index = m * 2 + (((byte_offset + i) - mi) / 2) * 16;
- index += (devc->divcount == 0) ? p : (1 - p);
- devc->final_buf[index] = devc->mangled_buf[i];
- }
-
- return SR_OK;
-}
-
-SR_PRIV void send_block_to_session_bus(struct dev_context *devc, int block)
-{
- int i;
- uint8_t sample, expected_sample;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_logic logic;
- int trigger_point; /* Relative trigger point (in this block). */
-
- /* Note: No sanity checks on devc/block, caller is responsible. */
-
- /* Check if we can find the trigger condition in this block. */
- trigger_point = -1;
- expected_sample = devc->trigger_pattern & devc->trigger_mask;
- for (i = 0; i < BS; i++) {
- /* Don't continue if the trigger was found previously. */
- if (devc->trigger_found)
- break;
-
- /*
- * Also, don't continue if triggers are "don't care", i.e. if
- * no trigger conditions were specified by the user. In that
- * case we don't want to send an SR_DF_TRIGGER packet at all.
- */
- if (devc->trigger_mask == 0x00)
- break;
-
- sample = *(devc->final_buf + (block * BS) + i);
-
- if ((sample & devc->trigger_mask) == expected_sample) {
- trigger_point = i;
- devc->trigger_found = 1;
- break;
- }
- }
-
- /* If no trigger was found, send one SR_DF_LOGIC packet. */
- if (trigger_point == -1) {
- /* Send an SR_DF_LOGIC packet to the session bus. */
- sr_spew("Sending SR_DF_LOGIC packet (%d bytes) for "
- "block %d.", BS, block);
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = BS;
- logic.unitsize = 1;
- logic.data = devc->final_buf + (block * BS);
- sr_session_send(devc->session_dev_id, &packet);
- return;
- }
-
- /*
- * We found the trigger, so some special handling is needed. We have
- * to send an SR_DF_LOGIC packet with the samples before the trigger
- * (if any), then the SD_DF_TRIGGER packet itself, then another
- * SR_DF_LOGIC packet with the samples after the trigger (if any).
- */
-
- /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */
-
- /* If at least one sample is located before the trigger... */
- if (trigger_point > 0) {
- /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */
- sr_spew("Sending pre-trigger SR_DF_LOGIC packet, "
- "start = %d, length = %d.", block * BS, trigger_point);
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = trigger_point;
- logic.unitsize = 1;
- logic.data = devc->final_buf + (block * BS);
- sr_session_send(devc->session_dev_id, &packet);
- }
-
- /* Send the SR_DF_TRIGGER packet to the session bus. */
- sr_spew("Sending SR_DF_TRIGGER packet, sample = %d.",
- (block * BS) + trigger_point);
- packet.type = SR_DF_TRIGGER;
- packet.payload = NULL;
- sr_session_send(devc->session_dev_id, &packet);
-
- /* If at least one sample is located after the trigger... */
- if (trigger_point < (BS - 1)) {
- /* Send post-trigger SR_DF_LOGIC packet to the session bus. */
- sr_spew("Sending post-trigger SR_DF_LOGIC packet, "
- "start = %d, length = %d.",
- (block * BS) + trigger_point, BS - trigger_point);
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = BS - trigger_point;
- logic.unitsize = 1;
- logic.data = devc->final_buf + (block * BS) + trigger_point;
- sr_session_send(devc->session_dev_id, &packet);
- }
-}
+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2011-2012 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 2 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA8_DRIVER_H
-#define LIBSIGROK_HARDWARE_CHRONOVU_LA8_DRIVER_H
-
-#include <glib.h>
-#include <ftdi.h>
-#include <stdint.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-
-/* Message logging helpers with driver-specific prefix string. */
-#define DRIVER_LOG_DOMAIN "la8: "
-#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
-#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
-
-#define USB_VENDOR_ID 0x0403
-#define USB_DESCRIPTION "ChronoVu LA8"
-#define USB_VENDOR_NAME "ChronoVu"
-#define USB_MODEL_NAME "LA8"
-#define USB_MODEL_VERSION ""
-
-#define NUM_PROBES 8
-#define TRIGGER_TYPES "01"
-#define SDRAM_SIZE (8 * 1024 * 1024)
-#define MIN_NUM_SAMPLES 1
-
-#define BS 4096 /* Block size */
-#define NUM_BLOCKS 2048 /* Number of blocks */
-
-/* Private, per-device-instance driver context. */
-struct dev_context {
- /** FTDI device context (used by libftdi). */
- struct ftdi_context *ftdic;
-
- /** The currently configured samplerate of the device. */
- uint64_t cur_samplerate;
-
- /** The current sampling limit (in ms). */
- uint64_t limit_msec;
-
- /** The current sampling limit (in number of samples). */
- uint64_t limit_samples;
-
- /** TODO */
- void *session_dev_id;
-
- /**
- * A buffer containing some (mangled) samples from the device.
- * Format: Pretty mangled-up (due to hardware reasons), see code.
- */
- uint8_t mangled_buf[BS];
-
- /**
- * An 8MB buffer where we'll store the de-mangled samples.
- * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0.
- */
- uint8_t *final_buf;
-
- /**
- * Trigger pattern (MSB = channel 7, LSB = channel 0).
- * A 1 bit matches a high signal, 0 matches a low signal on a probe.
- * Only low/high triggers (but not e.g. rising/falling) are supported.
- */
- uint8_t trigger_pattern;
-
- /**
- * Trigger mask (MSB = channel 7, LSB = channel 0).
- * A 1 bit means "must match trigger_pattern", 0 means "don't care".
- */
- uint8_t trigger_mask;
-
- /** Time (in seconds) before the trigger times out. */
- uint64_t trigger_timeout;
-
- /** Tells us whether an SR_DF_TRIGGER packet was already sent. */
- int trigger_found;
-
- /** TODO */
- time_t done;
-
- /** Counter/index for the data block to be read. */
- int block_counter;
-
- /** The divcount value (determines the sample period) for the LA8. */
- uint8_t divcount;
-
- /** This ChronoVu LA8's USB PID (multiple versions exist). */
- uint16_t usb_pid;
-};
-
-/* driver.c */
-extern SR_PRIV uint64_t supported_samplerates[];
-extern SR_PRIV const int hwcaps[];
-extern SR_PRIV const char *probe_names[];
-extern const struct sr_samplerates samplerates;
-SR_PRIV void fill_supported_samplerates_if_needed(void);
-SR_PRIV int is_valid_samplerate(uint64_t samplerate);
-SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate);
-SR_PRIV int la8_write(struct dev_context *devc, uint8_t *buf, int size);
-SR_PRIV int la8_read(struct dev_context *devc, uint8_t *buf, int size);
-SR_PRIV int la8_close(struct dev_context *devc);
-SR_PRIV int la8_close_usb_reset_sequencer(struct dev_context *devc);
-SR_PRIV int la8_reset(struct dev_context *devc);
-SR_PRIV int configure_probes(const struct sr_dev_inst *sdi);
-SR_PRIV int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate);
-SR_PRIV int la8_read_block(struct dev_context *devc);
-SR_PRIV void send_block_to_session_bus(struct dev_context *devc, int block);
-
-#endif
--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2011-2012 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <ftdi.h>
+#include <glib.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+#include "protocol.h"
+
+/* Probes are numbered 0-7. */
+SR_PRIV const char *probe_names[NUM_PROBES + 1] = {
+ "0",
+ "1",
+ "2",
+ "3",
+ "4",
+ "5",
+ "6",
+ "7",
+ NULL,
+};
+
+/* This will be initialized via hw_info_get()/SR_DI_SAMPLERATES. */
+SR_PRIV uint64_t supported_samplerates[255 + 1] = { 0 };
+
+/*
+ * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz
+ * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz
+ */
+const struct sr_samplerates samplerates = {
+ .low = 0,
+ .high = 0,
+ .step = 0,
+ .list = supported_samplerates,
+};
+
+/* Note: Continuous sampling is not supported by the hardware. */
+SR_PRIV const int hwcaps[] = {
+ SR_HWCAP_LOGIC_ANALYZER,
+ SR_HWCAP_SAMPLERATE,
+ SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */
+ SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */
+ 0,
+};
+
+SR_PRIV void fill_supported_samplerates_if_needed(void)
+{
+ int i;
+
+ /* Do nothing if supported_samplerates[] is already filled. */
+ if (supported_samplerates[0] != 0)
+ return;
+
+ /* Fill supported_samplerates[] with the proper values. */
+ for (i = 0; i < 255; i++)
+ supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1);
+ supported_samplerates[255] = 0;
+}
+
+/**
+ * Check if the given samplerate is supported by the LA8 hardware.
+ *
+ * @param samplerate The samplerate (in Hz) to check.
+ * @return 1 if the samplerate is supported/valid, 0 otherwise.
+ */
+SR_PRIV int is_valid_samplerate(uint64_t samplerate)
+{
+ int i;
+
+ fill_supported_samplerates_if_needed();
+
+ for (i = 0; i < 255; i++) {
+ if (supported_samplerates[i] == samplerate)
+ return 1;
+ }
+
+ sr_err("Invalid samplerate (%" PRIu64 "Hz).", samplerate);
+
+ return 0;
+}
+
+/**
+ * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants.
+ *
+ * LA8 hardware: sample period = (divcount + 1) * 10ns.
+ * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate).
+ * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate).
+ *
+ * @param samplerate The samplerate in Hz.
+ * @return The divcount value as needed by the hardware, or 0xff upon errors.
+ */
+SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate)
+{
+ if (samplerate == 0) {
+ sr_err("%s: samplerate was 0.", __func__);
+ return 0xff;
+ }
+
+ if (!is_valid_samplerate(samplerate)) {
+ sr_err("%s: Can't get divcount, samplerate invalid.", __func__);
+ return 0xff;
+ }
+
+ return (SR_MHZ(100) / samplerate) - 1;
+}
+
+/**
+ * Write data of a certain length to the LA8's FTDI device.
+ *
+ * @param devc The struct containing private per-device-instance data. Must not
+ * be NULL. devc->ftdic must not be NULL either.
+ * @param buf The buffer containing the data to write. Must not be NULL.
+ * @param size The number of bytes to write. Must be >= 0.
+ * @return The number of bytes written, or a negative value upon errors.
+ */
+SR_PRIV int la8_write(struct dev_context *devc, uint8_t *buf, int size)
+{
+ int bytes_written;
+
+ /* Note: Caller checked that devc and devc->ftdic != NULL. */
+
+ if (!buf) {
+ sr_err("%s: buf was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if (size < 0) {
+ sr_err("%s: size was < 0.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ bytes_written = ftdi_write_data(devc->ftdic, buf, size);
+
+ if (bytes_written < 0) {
+ sr_err("%s: ftdi_write_data: (%d) %s.", __func__,
+ bytes_written, ftdi_get_error_string(devc->ftdic));
+ (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
+ } else if (bytes_written != size) {
+ sr_err("%s: bytes to write: %d, bytes written: %d.",
+ __func__, size, bytes_written);
+ (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
+ }
+
+ return bytes_written;
+}
+
+/**
+ * Read a certain amount of bytes from the LA8's FTDI device.
+ *
+ * @param devc The struct containing private per-device-instance data. Must not
+ * be NULL. devc->ftdic must not be NULL either.
+ * @param buf The buffer where the received data will be stored. Must not
+ * be NULL.
+ * @param size The number of bytes to read. Must be >= 1.
+ * @return The number of bytes read, or a negative value upon errors.
+ */
+SR_PRIV int la8_read(struct dev_context *devc, uint8_t *buf, int size)
+{
+ int bytes_read;
+
+ /* Note: Caller checked that devc and devc->ftdic != NULL. */
+
+ if (!buf) {
+ sr_err("%s: buf was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if (size <= 0) {
+ sr_err("%s: size was <= 0.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ bytes_read = ftdi_read_data(devc->ftdic, buf, size);
+
+ if (bytes_read < 0) {
+ sr_err("%s: ftdi_read_data: (%d) %s.", __func__,
+ bytes_read, ftdi_get_error_string(devc->ftdic));
+ } else if (bytes_read != size) {
+ // sr_err("%s: Bytes to read: %d, bytes read: %d.",
+ // __func__, size, bytes_read);
+ }
+
+ return bytes_read;
+}
+
+SR_PRIV int la8_close(struct dev_context *devc)
+{
+ int ret;
+
+ if (!devc) {
+ sr_err("%s: devc was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if (!devc->ftdic) {
+ sr_err("%s: devc->ftdic was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if ((ret = ftdi_usb_close(devc->ftdic)) < 0) {
+ sr_err("%s: ftdi_usb_close: (%d) %s.",
+ __func__, ret, ftdi_get_error_string(devc->ftdic));
+ }
+
+ return ret;
+}
+
+/**
+ * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic.
+ *
+ * @param devc The struct containing private per-device-instance data.
+ * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments.
+ */
+SR_PRIV int la8_close_usb_reset_sequencer(struct dev_context *devc)
+{
+ /* Magic sequence of bytes for resetting the LA8 sequencer logic. */
+ uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01};
+ int ret;
+
+ if (!devc) {
+ sr_err("%s: devc was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if (!devc->ftdic) {
+ sr_err("%s: devc->ftdic was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if (devc->ftdic->usb_dev) {
+ /* Reset the LA8 sequencer logic, then wait 100ms. */
+ sr_dbg("Resetting sequencer logic.");
+ (void) la8_write(devc, buf, 8); /* Ignore errors. */
+ g_usleep(100 * 1000);
+
+ /* Purge FTDI buffers, then reset and close the FTDI device. */
+ sr_dbg("Purging buffers, resetting+closing FTDI device.");
+
+ /* Log errors, but ignore them (i.e., don't abort). */
+ if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0)
+ sr_err("%s: ftdi_usb_purge_buffers: (%d) %s.",
+ __func__, ret, ftdi_get_error_string(devc->ftdic));
+ if ((ret = ftdi_usb_reset(devc->ftdic)) < 0)
+ sr_err("%s: ftdi_usb_reset: (%d) %s.", __func__,
+ ret, ftdi_get_error_string(devc->ftdic));
+ if ((ret = ftdi_usb_close(devc->ftdic)) < 0)
+ sr_err("%s: ftdi_usb_close: (%d) %s.", __func__,
+ ret, ftdi_get_error_string(devc->ftdic));
+ }
+
+ /* Close USB device, deinitialize and free the FTDI context. */
+ ftdi_free(devc->ftdic); /* Returns void. */
+ devc->ftdic = NULL;
+
+ return SR_OK;
+}
+
+/**
+ * Reset the ChronoVu LA8.
+ *
+ * The LA8 must be reset after a failed read/write operation or upon timeouts.
+ *
+ * @param devc The struct containing private per-device-instance data.
+ * @return SR_OK upon success, SR_ERR upon failure.
+ */
+SR_PRIV int la8_reset(struct dev_context *devc)
+{
+ uint8_t buf[BS];
+ time_t done, now;
+ int bytes_read;
+
+ if (!devc) {
+ sr_err("%s: devc was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ if (!devc->ftdic) {
+ sr_err("%s: devc->ftdic was NULL.", __func__);
+ return SR_ERR_ARG;
+ }
+
+ sr_dbg("Resetting the device.");
+
+ /*
+ * Purge pending read data from the FTDI hardware FIFO until
+ * no more data is left, or a timeout occurs (after 20s).
+ */
+ done = 20 + time(NULL);
+ do {
+ /* TODO: Ignore errors? Check for < 0 at least! */
+ bytes_read = la8_read(devc, (uint8_t *)&buf, BS);
+ now = time(NULL);
+ } while ((done > now) && (bytes_read > 0));
+
+ /* Reset the LA8 sequencer logic and close the USB port. */
+ (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */
+
+ sr_dbg("Device reset finished.");
+
+ return SR_OK;
+}
+
+SR_PRIV int configure_probes(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ const struct sr_probe *probe;
+ const GSList *l;
+ uint8_t probe_bit;
+ char *tc;
+
+ devc = sdi->priv;
+ devc->trigger_pattern = 0;
+ devc->trigger_mask = 0; /* Default to "don't care" for all probes. */
+
+ for (l = sdi->probes; l; l = l->next) {
+ probe = (struct sr_probe *)l->data;
+
+ if (!probe) {
+ sr_err("%s: probe was NULL.", __func__);
+ return SR_ERR;
+ }
+
+ /* Skip disabled probes. */
+ if (!probe->enabled)
+ continue;
+
+ /* Skip (enabled) probes with no configured trigger. */
+ if (!probe->trigger)
+ continue;
+
+ /* Note: Must only be run if probe->trigger != NULL. */
+ if (probe->index < 0 || probe->index > 7) {
+ sr_err("%s: Invalid probe index %d, must be "
+ "between 0 and 7.", __func__, probe->index);
+ return SR_ERR;
+ }
+
+ probe_bit = (1 << (probe->index));
+
+ /* Configure the probe's trigger mask and trigger pattern. */
+ for (tc = probe->trigger; tc && *tc; tc++) {
+ devc->trigger_mask |= probe_bit;
+
+ /* Sanity check, LA8 only supports low/high trigger. */
+ if (*tc != '0' && *tc != '1') {
+ sr_err("%s: Invalid trigger '%c', only "
+ "'0'/'1' supported.", __func__, *tc);
+ return SR_ERR;
+ }
+
+ if (*tc == '1')
+ devc->trigger_pattern |= probe_bit;
+ }
+ }
+
+ sr_dbg("Trigger mask = 0x%x, trigger pattern = 0x%x.",
+ devc->trigger_mask, devc->trigger_pattern);
+
+ return SR_OK;
+}
+
+SR_PRIV int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate)
+{
+ struct dev_context *devc;
+
+ /* Note: Caller checked that sdi and sdi->priv != NULL. */
+
+ devc = sdi->priv;
+
+ sr_spew("Trying to set samplerate to %" PRIu64 "Hz.", samplerate);
+
+ fill_supported_samplerates_if_needed();
+
+ /* Check if this is a samplerate supported by the hardware. */
+ if (!is_valid_samplerate(samplerate))
+ return SR_ERR;
+
+ /* Set the new samplerate. */
+ devc->cur_samplerate = samplerate;
+
+ sr_dbg("Samplerate set to %" PRIu64 "Hz.", devc->cur_samplerate);
+
+ return SR_OK;
+}
+
+/**
+ * Get a block of data from the LA8.
+ *
+ * @param devc The struct containing private per-device-instance data. Must not
+ * be NULL. devc->ftdic must not be NULL either.
+ * @return SR_OK upon success, or SR_ERR upon errors.
+ */
+SR_PRIV int la8_read_block(struct dev_context *devc)
+{
+ int i, byte_offset, m, mi, p, index, bytes_read;
+ time_t now;
+
+ /* Note: Caller checked that devc and devc->ftdic != NULL. */
+
+ sr_spew("Reading block %d.", devc->block_counter);
+
+ bytes_read = la8_read(devc, devc->mangled_buf, BS);
+
+ /* If first block read got 0 bytes, retry until success or timeout. */
+ if ((bytes_read == 0) && (devc->block_counter == 0)) {
+ do {
+ sr_spew("Reading block 0 (again).");
+ bytes_read = la8_read(devc, devc->mangled_buf, BS);
+ /* TODO: How to handle read errors here? */
+ now = time(NULL);
+ } while ((devc->done > now) && (bytes_read == 0));
+ }
+
+ /* Check if block read was successful or a timeout occured. */
+ if (bytes_read != BS) {
+ sr_err("Trigger timed out. Bytes read: %d.", bytes_read);
+ (void) la8_reset(devc); /* Ignore errors. */
+ return SR_ERR;
+ }
+
+ /* De-mangle the data. */
+ sr_spew("Demangling block %d.", devc->block_counter);
+ byte_offset = devc->block_counter * BS;
+ m = byte_offset / (1024 * 1024);
+ mi = m * (1024 * 1024);
+ for (i = 0; i < BS; i++) {
+ p = i & (1 << 0);
+ index = m * 2 + (((byte_offset + i) - mi) / 2) * 16;
+ index += (devc->divcount == 0) ? p : (1 - p);
+ devc->final_buf[index] = devc->mangled_buf[i];
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV void send_block_to_session_bus(struct dev_context *devc, int block)
+{
+ int i;
+ uint8_t sample, expected_sample;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_logic logic;
+ int trigger_point; /* Relative trigger point (in this block). */
+
+ /* Note: No sanity checks on devc/block, caller is responsible. */
+
+ /* Check if we can find the trigger condition in this block. */
+ trigger_point = -1;
+ expected_sample = devc->trigger_pattern & devc->trigger_mask;
+ for (i = 0; i < BS; i++) {
+ /* Don't continue if the trigger was found previously. */
+ if (devc->trigger_found)
+ break;
+
+ /*
+ * Also, don't continue if triggers are "don't care", i.e. if
+ * no trigger conditions were specified by the user. In that
+ * case we don't want to send an SR_DF_TRIGGER packet at all.
+ */
+ if (devc->trigger_mask == 0x00)
+ break;
+
+ sample = *(devc->final_buf + (block * BS) + i);
+
+ if ((sample & devc->trigger_mask) == expected_sample) {
+ trigger_point = i;
+ devc->trigger_found = 1;
+ break;
+ }
+ }
+
+ /* If no trigger was found, send one SR_DF_LOGIC packet. */
+ if (trigger_point == -1) {
+ /* Send an SR_DF_LOGIC packet to the session bus. */
+ sr_spew("Sending SR_DF_LOGIC packet (%d bytes) for "
+ "block %d.", BS, block);
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = BS;
+ logic.unitsize = 1;
+ logic.data = devc->final_buf + (block * BS);
+ sr_session_send(devc->session_dev_id, &packet);
+ return;
+ }
+
+ /*
+ * We found the trigger, so some special handling is needed. We have
+ * to send an SR_DF_LOGIC packet with the samples before the trigger
+ * (if any), then the SD_DF_TRIGGER packet itself, then another
+ * SR_DF_LOGIC packet with the samples after the trigger (if any).
+ */
+
+ /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */
+
+ /* If at least one sample is located before the trigger... */
+ if (trigger_point > 0) {
+ /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */
+ sr_spew("Sending pre-trigger SR_DF_LOGIC packet, "
+ "start = %d, length = %d.", block * BS, trigger_point);
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = trigger_point;
+ logic.unitsize = 1;
+ logic.data = devc->final_buf + (block * BS);
+ sr_session_send(devc->session_dev_id, &packet);
+ }
+
+ /* Send the SR_DF_TRIGGER packet to the session bus. */
+ sr_spew("Sending SR_DF_TRIGGER packet, sample = %d.",
+ (block * BS) + trigger_point);
+ packet.type = SR_DF_TRIGGER;
+ packet.payload = NULL;
+ sr_session_send(devc->session_dev_id, &packet);
+
+ /* If at least one sample is located after the trigger... */
+ if (trigger_point < (BS - 1)) {
+ /* Send post-trigger SR_DF_LOGIC packet to the session bus. */
+ sr_spew("Sending post-trigger SR_DF_LOGIC packet, "
+ "start = %d, length = %d.",
+ (block * BS) + trigger_point, BS - trigger_point);
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = BS - trigger_point;
+ logic.unitsize = 1;
+ logic.data = devc->final_buf + (block * BS) + trigger_point;
+ sr_session_send(devc->session_dev_id, &packet);
+ }
+}
--- /dev/null
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2011-2012 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef LIBSIGROK_HARDWARE_CHRONOVU_LA8_PROTOCOL_H
+#define LIBSIGROK_HARDWARE_CHRONOVU_LA8_PROTOCOL_H
+
+#include <glib.h>
+#include <ftdi.h>
+#include <stdint.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/* Message logging helpers with driver-specific prefix string. */
+#define DRIVER_LOG_DOMAIN "la8: "
+#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
+#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
+
+#define USB_VENDOR_ID 0x0403
+#define USB_DESCRIPTION "ChronoVu LA8"
+#define USB_VENDOR_NAME "ChronoVu"
+#define USB_MODEL_NAME "LA8"
+#define USB_MODEL_VERSION ""
+
+#define NUM_PROBES 8
+#define TRIGGER_TYPES "01"
+#define SDRAM_SIZE (8 * 1024 * 1024)
+#define MIN_NUM_SAMPLES 1
+
+#define BS 4096 /* Block size */
+#define NUM_BLOCKS 2048 /* Number of blocks */
+
+/* Private, per-device-instance driver context. */
+struct dev_context {
+ /** FTDI device context (used by libftdi). */
+ struct ftdi_context *ftdic;
+
+ /** The currently configured samplerate of the device. */
+ uint64_t cur_samplerate;
+
+ /** The current sampling limit (in ms). */
+ uint64_t limit_msec;
+
+ /** The current sampling limit (in number of samples). */
+ uint64_t limit_samples;
+
+ /** TODO */
+ void *session_dev_id;
+
+ /**
+ * A buffer containing some (mangled) samples from the device.
+ * Format: Pretty mangled-up (due to hardware reasons), see code.
+ */
+ uint8_t mangled_buf[BS];
+
+ /**
+ * An 8MB buffer where we'll store the de-mangled samples.
+ * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0.
+ */
+ uint8_t *final_buf;
+
+ /**
+ * Trigger pattern (MSB = channel 7, LSB = channel 0).
+ * A 1 bit matches a high signal, 0 matches a low signal on a probe.
+ * Only low/high triggers (but not e.g. rising/falling) are supported.
+ */
+ uint8_t trigger_pattern;
+
+ /**
+ * Trigger mask (MSB = channel 7, LSB = channel 0).
+ * A 1 bit means "must match trigger_pattern", 0 means "don't care".
+ */
+ uint8_t trigger_mask;
+
+ /** Time (in seconds) before the trigger times out. */
+ uint64_t trigger_timeout;
+
+ /** Tells us whether an SR_DF_TRIGGER packet was already sent. */
+ int trigger_found;
+
+ /** TODO */
+ time_t done;
+
+ /** Counter/index for the data block to be read. */
+ int block_counter;
+
+ /** The divcount value (determines the sample period) for the LA8. */
+ uint8_t divcount;
+
+ /** This ChronoVu LA8's USB PID (multiple versions exist). */
+ uint16_t usb_pid;
+};
+
+/* protocol.c */
+extern SR_PRIV uint64_t supported_samplerates[];
+extern SR_PRIV const int hwcaps[];
+extern SR_PRIV const char *probe_names[];
+extern const struct sr_samplerates samplerates;
+SR_PRIV void fill_supported_samplerates_if_needed(void);
+SR_PRIV int is_valid_samplerate(uint64_t samplerate);
+SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate);
+SR_PRIV int la8_write(struct dev_context *devc, uint8_t *buf, int size);
+SR_PRIV int la8_read(struct dev_context *devc, uint8_t *buf, int size);
+SR_PRIV int la8_close(struct dev_context *devc);
+SR_PRIV int la8_close_usb_reset_sequencer(struct dev_context *devc);
+SR_PRIV int la8_reset(struct dev_context *devc);
+SR_PRIV int configure_probes(const struct sr_dev_inst *sdi);
+SR_PRIV int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate);
+SR_PRIV int la8_read_block(struct dev_context *devc);
+SR_PRIV void send_block_to_session_bus(struct dev_context *devc, int block);
+
+#endif
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