/*
* This file is part of the sigrok project.
*
+ * Copyright (C) 2010-2012 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
#include <stdio.h>
#include <stdlib.h>
-#include <stdbool.h>
+#include <string.h>
#include <inttypes.h>
-#include <glib.h>
#include <libusb.h>
-
#include "config.h"
-#include "sigrok.h"
-#include "sigrok-internal.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
#include "fx2lafw.h"
+#include "command.h"
+
+static const struct fx2lafw_profile supported_fx2[] = {
+ /*
+ * CWAV USBee DX
+ * XZL Studio DX
+ */
+ { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
+ FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
+ 0 },
+ /*
+ * CWAV USBee AX
+ * EE Electronics ESLA201A
+ * ARMFLY AX-Pro
+ */
+ { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
+ FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
+ 0 },
+
+ /*
+ * CWAV USBee SX
+ */
+ { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
+ FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
+ 0 },
-static struct fx2lafw_profile supported_fx2[] = {
- /* USBee AX */
- { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, 8 },
- { 0, 0, 0, 0, 0, 0 }
+ /*
+ * Saleae Logic
+ * EE Electronics ESLA100
+ * Robomotic MiniLogic
+ * Robomotic BugLogic 3
+ */
+ { 0x0925, 0x3881, "Saleae", "Logic", NULL,
+ FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
+ 0 },
+
+ /*
+ * Default Cypress FX2 without EEPROM, e.g.:
+ * Lcsoft Mini Board
+ * Braintechnology USB Interface V2.x
+ */
+ { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
+ FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
+ DEV_CAPS_16BIT },
+
+ /*
+ * Braintechnology USB-LPS
+ */
+ { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
+ FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
+ DEV_CAPS_16BIT },
+
+ { 0, 0, 0, 0, 0, 0, 0 }
};
-static int fx2lafw_capabilities[] = {
+static const int hwcaps[] = {
SR_HWCAP_LOGIC_ANALYZER,
SR_HWCAP_SAMPLERATE,
/* These are really implemented in the driver, not the hardware. */
SR_HWCAP_LIMIT_SAMPLES,
SR_HWCAP_CONTINUOUS,
- 0
+ 0,
};
-static const char *fx2lafw_probe_names[] = {
- "D0",
- "D1",
- "D2",
- "D3",
- "D4",
- "D5",
- "D6",
- "D7",
- NULL
+/*
+ * TODO: Different probe_names[] for each supported device.
+ */
+static const char *probe_names[] = {
+ "0",
+ "1",
+ "2",
+ "3",
+ "4",
+ "5",
+ "6",
+ "7",
+ "8",
+ "9",
+ "10",
+ "11",
+ "12",
+ "13",
+ "14",
+ "15",
+ NULL,
};
-static uint64_t fx2lafw_supported_samplerates[] = {
+static const uint64_t supported_samplerates[] = {
+ SR_KHZ(20),
+ SR_KHZ(25),
+ SR_KHZ(50),
+ SR_KHZ(100),
+ SR_KHZ(200),
+ SR_KHZ(250),
+ SR_KHZ(500),
SR_MHZ(1),
SR_MHZ(2),
SR_MHZ(3),
SR_MHZ(8),
SR_MHZ(12),
SR_MHZ(16),
- SR_MHZ(24)
+ SR_MHZ(24),
+ 0,
};
-static struct sr_samplerates fx2lafw_samplerates = {
- SR_MHZ(1),
- SR_MHZ(24),
- SR_HZ(0),
- fx2lafw_supported_samplerates
+static const struct sr_samplerates samplerates = {
+ 0,
+ 0,
+ 0,
+ supported_samplerates,
};
static GSList *dev_insts = NULL;
static libusb_context *usb_context = NULL;
+static int hw_dev_config_set(int dev_index, int hwcap, const void *value);
+static int hw_dev_acquisition_stop(int dev_index, void *cb_data);
+
/**
* Check the USB configuration to determine if this is an fx2lafw device.
*
- * @return true if the device's configuration profile match fx2lafw
- * configuration, flase otherwise.
+ * @return TRUE if the device's configuration profile match fx2lafw
+ * configuration, FALSE otherwise.
*/
-static bool check_conf_profile(libusb_device *dev)
+static gboolean check_conf_profile(libusb_device *dev)
{
struct libusb_device_descriptor des;
- struct libusb_config_descriptor *conf_dsc = NULL;
- const struct libusb_interface_descriptor *intf_dsc;
- bool ret = false;
+ struct libusb_device_handle *hdl;
+ gboolean ret;
+ unsigned char strdesc[64];
+ hdl = NULL;
+ ret = FALSE;
while (!ret) {
- /* Assume it's not a Saleae Logic unless proven wrong. */
- ret = 0;
-
+ /* Assume the FW has not been loaded, unless proven wrong. */
if (libusb_get_device_descriptor(dev, &des) != 0)
break;
- if (des.bNumConfigurations != 1)
- /* Need exactly 1 configuration. */
+ if (libusb_open(dev, &hdl) != 0)
break;
- if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
+ if (libusb_get_string_descriptor_ascii(hdl,
+ des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
break;
-
- if (conf_dsc->bNumInterfaces != 1)
- /* Need exactly 1 interface. */
+ if (strncmp((const char *)strdesc, "sigrok", 6))
break;
- if (conf_dsc->interface[0].num_altsetting != 1)
- /* Need just one alternate setting. */
+ if (libusb_get_string_descriptor_ascii(hdl,
+ des.iProduct, strdesc, sizeof(strdesc)) < 0)
break;
-
- intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
- if (intf_dsc->bNumEndpoints != 3)
- /* Need exactly 3 end points. */
+ if (strncmp((const char *)strdesc, "fx2lafw", 7))
break;
- if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
- (1 | LIBUSB_ENDPOINT_OUT))
- /* The first endpoint should be 1 (outbound). */
- break;
-
- if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
- (2 | LIBUSB_ENDPOINT_IN))
- /* The second endpoint should be 2 (inbound). */
- break;
-
- /* TODO: Check the debug channel... */
-
/* If we made it here, it must be an fx2lafw. */
- ret = true;
+ ret = TRUE;
}
-
- if (conf_dsc)
- libusb_free_config_descriptor(conf_dsc);
+ if (hdl)
+ libusb_close(hdl);
return ret;
}
-static int fx2lafw_open_dev(int dev_index)
+static int fx2lafw_dev_open(int dev_index)
{
libusb_device **devlist;
struct libusb_device_descriptor des;
struct sr_dev_inst *sdi;
- struct fx2lafw_device *ctx;
- int err, skip, i;
+ struct context *ctx;
+ struct version_info vi;
+ int ret, skip, i;
+ uint8_t revid;
if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
return SR_ERR;
return SR_ERR;
skip = 0;
- libusb_get_device_list(usb_context, &devlist);
- for (i = 0; devlist[i]; i++) {
- if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
- sr_err("fx2lafw: failed to get device descriptor: %d", err);
+ const int device_count = libusb_get_device_list(usb_context, &devlist);
+ if (device_count < 0) {
+ sr_err("fx2lafw: Failed to retrieve device list (%d)",
+ device_count);
+ return SR_ERR;
+ }
+
+ for (i = 0; i < device_count; i++) {
+ if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
+ sr_err("fx2lafw: Failed to get device descriptor: %d.",
+ ret);
continue;
}
- if (des.idVendor != FIRMWARE_VID
- || des.idProduct != FIRMWARE_PID)
+ if (des.idVendor != ctx->profile->vid
+ || des.idProduct != ctx->profile->pid)
continue;
if (sdi->status == SR_ST_INITIALIZING) {
continue;
}
- if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) {
+ if (!(ret = libusb_open(devlist[i], &ctx->usb->devhdl))) {
if (ctx->usb->address == 0xff)
/*
* first time we touch this device after firmware upload,
* so we don't know the address yet.
*/
ctx->usb->address = libusb_get_device_address(devlist[i]);
-
- sdi->status = SR_ST_ACTIVE;
- sr_info("fx2lafw: opened device %d on %d.%d interface %d",
- sdi->index, ctx->usb->bus,
- ctx->usb->address, USB_INTERFACE);
} else {
- sr_err("fx2lafw: failed to open device: %d", err);
+ sr_err("fx2lafw: Failed to open device: %d.", ret);
+ break;
}
- /* if we made it here, we handled the device one way or another */
+ ret = command_get_fw_version(ctx->usb->devhdl, &vi);
+ if (ret != SR_OK) {
+ sr_err("fx2lafw: Failed to retrieve "
+ "firmware version information.");
+ break;
+ }
+
+ ret = command_get_revid_version(ctx->usb->devhdl, &revid);
+ if (ret != SR_OK) {
+ sr_err("fx2lafw: Failed to retrieve REVID.");
+ break;
+ }
+
+ /*
+ * Changes in major version mean incompatible/API changes, so
+ * bail out if we encounter an incompatible version.
+ * Different minor versions are OK, they should be compatible.
+ */
+ if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
+ sr_err("fx2lafw: Expected firmware version %d.x, "
+ "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
+ vi.major, vi.minor);
+ break;
+ }
+
+ sdi->status = SR_ST_ACTIVE;
+ sr_info("fx2lafw: Opened device %d on %d.%d "
+ "interface %d, firmware %d.%d, REVID %d.",
+ sdi->index, ctx->usb->bus, ctx->usb->address,
+ USB_INTERFACE, vi.major, vi.minor, revid);
+
break;
}
libusb_free_device_list(devlist, 1);
return SR_OK;
}
-static struct fx2lafw_device* fx2lafw_device_new(void)
+static void close_dev(struct sr_dev_inst *sdi)
+{
+ struct context *ctx;
+
+ ctx = sdi->priv;
+
+ if (ctx->usb->devhdl == NULL)
+ return;
+
+ sr_info("fx2lafw: Closing device %d on %d.%d interface %d.",
+ sdi->index, ctx->usb->bus, ctx->usb->address, USB_INTERFACE);
+ libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE);
+ libusb_close(ctx->usb->devhdl);
+ ctx->usb->devhdl = NULL;
+ sdi->status = SR_ST_INACTIVE;
+}
+
+static int configure_probes(struct context *ctx, GSList *probes)
+{
+ struct sr_probe *probe;
+ GSList *l;
+ int probe_bit, stage, i;
+ char *tc;
+
+ for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
+ ctx->trigger_mask[i] = 0;
+ ctx->trigger_value[i] = 0;
+ }
+
+ stage = -1;
+ for (l = probes; l; l = l->next) {
+ probe = (struct sr_probe *)l->data;
+ if (probe->enabled == FALSE)
+ continue;
+
+ if (probe->index > 8)
+ ctx->sample_wide = TRUE;
+
+ probe_bit = 1 << (probe->index - 1);
+ if (!(probe->trigger))
+ continue;
+
+ stage = 0;
+ for (tc = probe->trigger; *tc; tc++) {
+ ctx->trigger_mask[stage] |= probe_bit;
+ if (*tc == '1')
+ ctx->trigger_value[stage] |= probe_bit;
+ stage++;
+ if (stage > NUM_TRIGGER_STAGES)
+ return SR_ERR;
+ }
+ }
+
+ if (stage == -1)
+ /*
+ * We didn't configure any triggers, make sure acquisition
+ * doesn't wait for any.
+ */
+ ctx->trigger_stage = TRIGGER_FIRED;
+ else
+ ctx->trigger_stage = 0;
+
+ return SR_OK;
+}
+
+static struct context *fx2lafw_dev_new(void)
{
- struct fx2lafw_device *fx2lafw;
+ struct context *ctx;
- if (!(fx2lafw = g_try_malloc0(sizeof(struct fx2lafw_device)))) {
- sr_err("fx2lafw: %s: fx2lafw_device malloc failed", __func__);
+ if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
+ sr_err("fx2lafw: %s: ctx malloc failed.", __func__);
return NULL;
}
- return fx2lafw;
+ ctx->trigger_stage = TRIGGER_FIRED;
+
+ return ctx;
}
/*
* API callbacks
*/
-static int hw_init(const char *deviceinfo)
+static int hw_init(const char *devinfo)
{
struct sr_dev_inst *sdi;
struct libusb_device_descriptor des;
- struct fx2lafw_profile *fx2lafw_prof;
- struct fx2lafw_device *ctx;
+ const struct fx2lafw_profile *prof;
+ struct context *ctx;
libusb_device **devlist;
- int err;
+ int ret;
int devcnt = 0;
int i, j;
/* Avoid compiler warnings. */
- (void)deviceinfo;
+ (void)devinfo;
if (libusb_init(&usb_context) != 0) {
- sr_warn("Failed to initialize USB.");
+ sr_warn("fx2lafw: Failed to initialize libusb.");
return 0;
}
- /* Find all fx2lafw compatible devices and upload firware to all of them. */
+ /* Find all fx2lafw compatible devices and upload firmware to them. */
libusb_get_device_list(usb_context, &devlist);
for (i = 0; devlist[i]; i++) {
- if ((err = libusb_get_device_descriptor(
- devlist[i], &des)) != 0) {
- sr_warn("failed to get device descriptor: %d", err);
+ if ((ret = libusb_get_device_descriptor(
+ devlist[i], &des)) != 0) {
+ sr_warn("fx2lafw: Failed to get device descriptor: %d.", ret);
continue;
}
- fx2lafw_prof = NULL;
+ prof = NULL;
for (j = 0; supported_fx2[j].vid; j++) {
if (des.idVendor == supported_fx2[j].vid &&
des.idProduct == supported_fx2[j].pid) {
- fx2lafw_prof = &supported_fx2[j];
+ prof = &supported_fx2[j];
}
}
/* Skip if the device was not found */
- if(!fx2lafw_prof)
+ if (!prof)
continue;
sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
- fx2lafw_prof->vendor, fx2lafw_prof->model,
- fx2lafw_prof->model_version);
- if(!sdi)
+ prof->vendor, prof->model, prof->model_version);
+ if (!sdi)
return 0;
- ctx = fx2lafw_device_new();
- ctx->profile = fx2lafw_prof;
+ ctx = fx2lafw_dev_new();
+ ctx->profile = prof;
sdi->priv = ctx;
- device_instances = g_slist_append(dev_insts, sdi);
+ dev_insts = g_slist_append(dev_insts, sdi);
if (check_conf_profile(devlist[i])) {
/* Already has the firmware, so fix the new address. */
- sr_dbg("fx2lafw: Found a fx2lafw device.");
+ sr_dbg("fx2lafw: Found an fx2lafw device.");
sdi->status = SR_ST_INACTIVE;
ctx->usb = sr_usb_dev_inst_new
(libusb_get_bus_number(devlist[i]),
libusb_get_device_address(devlist[i]), NULL);
} else {
- if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, FIRMWARE) == SR_OK)
+ if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
+ prof->firmware) == SR_OK)
/* Remember when the firmware on this device was updated */
- g_get_current_time(&ctx->fw_updated);
+ ctx->fw_updated = g_get_monotonic_time();
else
- sr_err("fx2lafw: firmware upload failed for "
- "device %d", devcnt);
+ sr_err("fx2lafw: Firmware upload failed for "
+ "device %d.", devcnt);
ctx->usb = sr_usb_dev_inst_new
(libusb_get_bus_number(devlist[i]), 0xff, NULL);
}
return devcnt;
}
-static int hw_dev_open(int device_index)
+static int hw_dev_open(int dev_index)
{
- GTimeVal cur_time;
struct sr_dev_inst *sdi;
- struct fx2lafw_device *ctx;
- int timediff, err;
+ struct context *ctx;
+ int ret;
+ int64_t timediff_us, timediff_ms;
- if (!(sdi = sr_dev_inst_get(dev_insts, device_index)))
+ if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
return SR_ERR;
ctx = sdi->priv;
/*
- * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms
- * for the FX2 to renumerate
+ * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
+ * milliseconds for the FX2 to renumerate.
*/
- err = 0;
- if (GTV_TO_MSEC(ctx->fw_updated) > 0) {
- sr_info("fx2lafw: waiting for device to reset");
+ ret = SR_ERR;
+ if (ctx->fw_updated > 0) {
+ sr_info("fx2lafw: Waiting for device to reset.");
/* takes at least 300ms for the FX2 to be gone from the USB bus */
g_usleep(300 * 1000);
- timediff = 0;
- while (timediff < MAX_RENUM_DELAY) {
- if ((err = fx2lafw_open_dev(device_index)) == SR_OK)
+ timediff_ms = 0;
+ while (timediff_ms < MAX_RENUM_DELAY_MS) {
+ if ((ret = fx2lafw_dev_open(dev_index)) == SR_OK)
break;
g_usleep(100 * 1000);
- g_get_current_time(&cur_time);
- timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated);
+
+ timediff_us = g_get_monotonic_time() - ctx->fw_updated;
+ timediff_ms = timediff_us / 1000;
+ sr_spew("fx2lafw: waited %" PRIi64 " ms", timediff_ms);
}
- sr_info("fx2lafw: device came back after %d ms", timediff);
+ sr_info("fx2lafw: Device came back after %d ms.", timediff_ms);
} else {
- err = fx2lafw_open_dev(device_index);
+ ret = fx2lafw_dev_open(dev_index);
}
- if (err != SR_OK) {
- sr_err("fx2lafw: unable to open device");
+ if (ret != SR_OK) {
+ sr_err("fx2lafw: Unable to open device.");
return SR_ERR;
}
ctx = sdi->priv;
- err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
- if (err != 0) {
- sr_err("fx2lafw: Unable to claim interface: %d", err);
+ ret = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
+ if (ret != 0) {
+ switch(ret) {
+ case LIBUSB_ERROR_BUSY:
+ sr_err("fx2lafw: Unable to claim USB interface. Another "
+ "program or driver has already claimed it.");
+ break;
+
+ case LIBUSB_ERROR_NO_DEVICE:
+ sr_err("fx2lafw: Device has been disconnected.");
+ break;
+
+ default:
+ sr_err("fx2lafw: Unable to claim interface: %d.", ret);
+ break;
+ }
+
return SR_ERR;
}
+ if (ctx->cur_samplerate == 0) {
+ /* Samplerate hasn't been set; default to the slowest one. */
+ if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE,
+ &supported_samplerates[0]) == SR_ERR)
+ return SR_ERR;
+ }
+
return SR_OK;
}
-static int hw_dev_close(int device_index)
+static int hw_dev_close(int dev_index)
{
- (void)device_index;
+ struct sr_dev_inst *sdi;
+
+ if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) {
+ sr_err("fx2lafw: %s: sdi was NULL.", __func__);
+ return SR_ERR_BUG;
+ }
+
+ /* TODO */
+ close_dev(sdi);
+
return SR_OK;
}
{
GSList *l;
struct sr_dev_inst *sdi;
-
- for(l = device_instances; l; l = l->next) {
+ struct context *ctx;
+ int ret = SR_OK;
+
+ for (l = dev_insts; l; l = l->next) {
+ if (!(sdi = l->data)) {
+ /* Log error, but continue cleaning up the rest. */
+ sr_err("fx2lafw: %s: sdi was NULL, continuing.",
+ __func__);
+ ret = SR_ERR_BUG;
+ continue;
+ }
+ if (!(ctx = sdi->priv)) {
+ /* Log error, but continue cleaning up the rest. */
+ sr_err("fx2lafw: %s: sdi->priv was NULL, continuing",
+ __func__);
+ ret = SR_ERR_BUG;
+ continue;
+ }
+ close_dev(sdi);
sdi = l->data;
sr_dev_inst_free(sdi);
}
- g_slist_free(device_instances);
- device_instances = NULL;
+ g_slist_free(dev_insts);
+ dev_insts = NULL;
- if(usb_context)
+ if (usb_context)
libusb_exit(usb_context);
usb_context = NULL;
- return SR_OK;
+ return ret;
}
-static void *hw_dev_info_get(int device_index, int device_info_id)
+static const void *hw_dev_info_get(int dev_index, int dev_info_id)
{
struct sr_dev_inst *sdi;
- struct fx2lafw_device *ctx;
+ struct context *ctx;
- if (!(sdi = sr_dev_inst_get(dev_insts, device_index)))
+ if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
return NULL;
ctx = sdi->priv;
- switch (device_info_id) {
+ switch (dev_info_id) {
case SR_DI_INST:
return sdi;
case SR_DI_NUM_PROBES:
- return GINT_TO_POINTER(ctx->profile->num_probes);
+ return GINT_TO_POINTER(
+ (ctx->profile->dev_caps & DEV_CAPS_16BIT) ?
+ 16 : 8);
case SR_DI_PROBE_NAMES:
- return fx2lafw_probe_names;
+ return probe_names;
case SR_DI_SAMPLERATES:
- return &fx2lafw_samplerates;
+ return &samplerates;
case SR_DI_TRIGGER_TYPES:
return TRIGGER_TYPES;
+ case SR_DI_CUR_SAMPLERATE:
+ return &ctx->cur_samplerate;
}
return NULL;
}
-static int hw_dev_status_get(int device_index)
+static int hw_dev_status_get(int dev_index)
{
const struct sr_dev_inst *const sdi =
- sr_dev_inst_get(dev_insts, device_index);
+ sr_dev_inst_get(dev_insts, dev_index);
if (!sdi)
return SR_ST_NOT_FOUND;
return sdi->status;
}
-static int *hw_hwcap_get_all(void)
+static const int *hw_hwcap_get_all(void)
{
- return fx2lafw_capabilities;
+ return hwcaps;
}
-static int hw_dev_config_set(int dev_index, int capability, void *value)
+static int hw_dev_config_set(int dev_index, int hwcap, const void *value)
{
- (void)dev_index;
- (void)capability;
- (void)value;
- return SR_OK;
+ struct sr_dev_inst *sdi;
+ struct context *ctx;
+ int ret;
+
+ if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+ return SR_ERR;
+ ctx = sdi->priv;
+
+ if (hwcap == SR_HWCAP_SAMPLERATE) {
+ ctx->cur_samplerate = *(const uint64_t *)value;
+ ret = SR_OK;
+ } else if (hwcap == SR_HWCAP_PROBECONFIG) {
+ ret = configure_probes(ctx, (GSList *) value);
+ } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) {
+ ctx->limit_samples = *(const uint64_t *)value;
+ ret = SR_OK;
+ } else {
+ ret = SR_ERR;
+ }
+
+ return ret;
+}
+
+static int receive_data(int fd, int revents, void *cb_data)
+{
+ struct timeval tv;
+
+ /* Avoid compiler warnings. */
+ (void)fd;
+ (void)revents;
+ (void)cb_data;
+
+ tv.tv_sec = tv.tv_usec = 0;
+ libusb_handle_events_timeout(usb_context, &tv);
+
+ return TRUE;
+}
+
+static void abort_acquisition(struct context *ctx)
+{
+ int i;
+
+ ctx->num_samples = -1;
+
+ for (i = ctx->num_transfers - 1; i >= 0; i--) {
+ if (ctx->transfers[i])
+ libusb_cancel_transfer(ctx->transfers[i]);
+ }
+}
+
+static void finish_acquisition(struct context *ctx)
+{
+ struct sr_datafeed_packet packet;
+ int i;
+
+ /* Terminate session */
+ packet.type = SR_DF_END;
+ sr_session_send(ctx->session_dev_id, &packet);
+
+ /* Remove fds from polling */
+ const struct libusb_pollfd **const lupfd =
+ libusb_get_pollfds(usb_context);
+ for (i = 0; lupfd[i]; i++)
+ sr_source_remove(lupfd[i]->fd);
+ free(lupfd); /* NOT g_free()! */
+
+ ctx->num_transfers = 0;
+ g_free(ctx->transfers);
+}
+
+static void free_transfer(struct libusb_transfer *transfer)
+{
+ struct context *ctx = transfer->user_data;
+ unsigned int i;
+
+ g_free(transfer->buffer);
+ transfer->buffer = NULL;
+ libusb_free_transfer(transfer);
+
+ for (i = 0; i < ctx->num_transfers; i++) {
+ if (ctx->transfers[i] == transfer) {
+ ctx->transfers[i] = NULL;
+ break;
+ }
+ }
+
+ ctx->submitted_transfers--;
+ if (ctx->submitted_transfers == 0)
+ finish_acquisition(ctx);
+
+}
+
+static void resubmit_transfer(struct libusb_transfer *transfer)
+{
+ if (libusb_submit_transfer(transfer) != 0) {
+ free_transfer(transfer);
+ /* TODO: Stop session? */
+ /* TODO: Better error message. */
+ sr_err("fx2lafw: %s: libusb_submit_transfer error.", __func__);
+ }
+}
+
+static void receive_transfer(struct libusb_transfer *transfer)
+{
+ gboolean packet_has_error = FALSE;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_logic logic;
+ struct context *ctx = transfer->user_data;
+ int trigger_offset, i;
+
+ /*
+ * If acquisition has already ended, just free any queued up
+ * transfer that come in.
+ */
+ if (ctx->num_samples == -1) {
+ free_transfer(transfer);
+ return;
+ }
+
+ sr_info("fx2lafw: receive_transfer(): status %d received %d bytes.",
+ transfer->status, transfer->actual_length);
+
+ /* Save incoming transfer before reusing the transfer struct. */
+ uint8_t *const cur_buf = transfer->buffer;
+ const int sample_width = ctx->sample_wide ? 2 : 1;
+ const int cur_sample_count = transfer->actual_length / sample_width;
+
+ switch (transfer->status) {
+ case LIBUSB_TRANSFER_NO_DEVICE:
+ abort_acquisition(ctx);
+ free_transfer(transfer);
+ return;
+ case LIBUSB_TRANSFER_COMPLETED:
+ case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though */
+ break;
+ default:
+ packet_has_error = TRUE;
+ break;
+ }
+
+ if (transfer->actual_length == 0 || packet_has_error) {
+ ctx->empty_transfer_count++;
+ if (ctx->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
+ /*
+ * The FX2 gave up. End the acquisition, the frontend
+ * will work out that the samplecount is short.
+ */
+ abort_acquisition(ctx);
+ free_transfer(transfer);
+ } else {
+ resubmit_transfer(transfer);
+ }
+ return;
+ } else {
+ ctx->empty_transfer_count = 0;
+ }
+
+ trigger_offset = 0;
+ if (ctx->trigger_stage >= 0) {
+ for (i = 0; i < cur_sample_count; i++) {
+
+ const uint16_t cur_sample = ctx->sample_wide ?
+ *((const uint16_t*)cur_buf + i) :
+ *((const uint8_t*)cur_buf + i);
+
+ if ((cur_sample & ctx->trigger_mask[ctx->trigger_stage]) ==
+ ctx->trigger_value[ctx->trigger_stage]) {
+ /* Match on this trigger stage. */
+ ctx->trigger_buffer[ctx->trigger_stage] = cur_sample;
+ ctx->trigger_stage++;
+
+ if (ctx->trigger_stage == NUM_TRIGGER_STAGES ||
+ ctx->trigger_mask[ctx->trigger_stage] == 0) {
+ /* Match on all trigger stages, we're done. */
+ trigger_offset = i + 1;
+
+ /*
+ * TODO: Send pre-trigger buffer to session bus.
+ * Tell the frontend we hit the trigger here.
+ */
+ packet.type = SR_DF_TRIGGER;
+ packet.payload = NULL;
+ sr_session_send(ctx->session_dev_id, &packet);
+
+ /*
+ * Send the samples that triggered it, since we're
+ * skipping past them.
+ */
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.unitsize = sizeof(*ctx->trigger_buffer);
+ logic.length = ctx->trigger_stage * logic.unitsize;
+ logic.data = ctx->trigger_buffer;
+ sr_session_send(ctx->session_dev_id, &packet);
+
+ ctx->trigger_stage = TRIGGER_FIRED;
+ break;
+ }
+ } else if (ctx->trigger_stage > 0) {
+ /*
+ * We had a match before, but not in the next sample. However, we may
+ * have a match on this stage in the next bit -- trigger on 0001 will
+ * fail on seeing 00001, so we need to go back to stage 0 -- but at
+ * the next sample from the one that matched originally, which the
+ * counter increment at the end of the loop takes care of.
+ */
+ i -= ctx->trigger_stage;
+ if (i < -1)
+ i = -1; /* Oops, went back past this buffer. */
+ /* Reset trigger stage. */
+ ctx->trigger_stage = 0;
+ }
+ }
+ }
+
+ if (ctx->trigger_stage == TRIGGER_FIRED) {
+ /* Send the incoming transfer to the session bus. */
+ const int trigger_offset_bytes = trigger_offset * sample_width;
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = transfer->actual_length - trigger_offset_bytes;
+ logic.unitsize = sample_width;
+ logic.data = cur_buf + trigger_offset_bytes;
+ sr_session_send(ctx->session_dev_id, &packet);
+
+ ctx->num_samples += cur_sample_count;
+ if (ctx->limit_samples &&
+ (unsigned int)ctx->num_samples > ctx->limit_samples) {
+ abort_acquisition(ctx);
+ free_transfer(transfer);
+ return;
+ }
+ } else {
+ /*
+ * TODO: Buffer pre-trigger data in capture
+ * ratio-sized buffer.
+ */
+ }
+
+ resubmit_transfer(transfer);
+}
+
+static unsigned int to_bytes_per_ms(unsigned int samplerate)
+{
+ return samplerate / 1000;
+}
+
+static size_t get_buffer_size(struct context *ctx)
+{
+ size_t s;
+
+ /* The buffer should be large enough to hold 10ms of data and a multiple
+ * of 512. */
+ s = 10 * to_bytes_per_ms(ctx->cur_samplerate);
+ return (s + 511) & ~511;
+}
+
+static unsigned int get_number_of_transfers(struct context *ctx)
+{
+ unsigned int n;
+
+ /* Total buffer size should be able to hold about 500ms of data */
+ n = 500 * to_bytes_per_ms(ctx->cur_samplerate) / get_buffer_size(ctx);
+
+ if (n > NUM_SIMUL_TRANSFERS)
+ return NUM_SIMUL_TRANSFERS;
+
+ return n;
+}
+
+static unsigned int get_timeout(struct context *ctx)
+{
+ size_t total_size;
+ unsigned int timeout;
+
+ total_size = get_buffer_size(ctx) * get_number_of_transfers(ctx);
+ timeout = total_size / to_bytes_per_ms(ctx->cur_samplerate);
+ return timeout + timeout / 4; /* Leave a headroom of 25% percent */
}
-static int hw_dev_acquisition_start(int dev_index, gpointer session_data)
+static int hw_dev_acquisition_start(int dev_index, void *cb_data)
{
- (void)dev_index;
- (void)session_data;
+ struct sr_dev_inst *sdi;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_header header;
+ struct sr_datafeed_meta_logic meta;
+ struct context *ctx;
+ struct libusb_transfer *transfer;
+ const struct libusb_pollfd **lupfd;
+ unsigned int i;
+ int ret;
+ unsigned char *buf;
+
+ if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+ return SR_ERR;
+ ctx = sdi->priv;
+
+ if (ctx->submitted_transfers != 0)
+ return SR_ERR;
+
+ ctx->session_dev_id = cb_data;
+ ctx->num_samples = 0;
+ ctx->empty_transfer_count = 0;
+
+ const unsigned int timeout = get_timeout(ctx);
+ const unsigned int num_transfers = get_number_of_transfers(ctx);
+ const size_t size = get_buffer_size(ctx);
+
+ ctx->transfers = g_try_malloc0(sizeof(*ctx->transfers) * num_transfers);
+ if (!ctx->transfers)
+ return SR_ERR;
+
+ ctx->num_transfers = num_transfers;
+
+ for (i = 0; i < num_transfers; i++) {
+ if (!(buf = g_try_malloc(size))) {
+ sr_err("fx2lafw: %s: buf malloc failed.", __func__);
+ return SR_ERR_MALLOC;
+ }
+ transfer = libusb_alloc_transfer(0);
+ libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl,
+ 2 | LIBUSB_ENDPOINT_IN, buf, size,
+ receive_transfer, ctx, timeout);
+ if (libusb_submit_transfer(transfer) != 0) {
+ libusb_free_transfer(transfer);
+ g_free(buf);
+ abort_acquisition(ctx);
+ return SR_ERR;
+ }
+ ctx->transfers[i] = transfer;
+ ctx->submitted_transfers++;
+ }
+
+ lupfd = libusb_get_pollfds(usb_context);
+ for (i = 0; lupfd[i]; i++)
+ sr_source_add(lupfd[i]->fd, lupfd[i]->events,
+ timeout, receive_data, NULL);
+ free(lupfd); /* NOT g_free()! */
+
+ packet.type = SR_DF_HEADER;
+ packet.payload = &header;
+ header.feed_version = 1;
+ gettimeofday(&header.starttime, NULL);
+ sr_session_send(cb_data, &packet);
+
+ /* Send metadata about the SR_DF_LOGIC packets to come. */
+ packet.type = SR_DF_META_LOGIC;
+ packet.payload = &meta;
+ meta.samplerate = ctx->cur_samplerate;
+ meta.num_probes = ctx->sample_wide ? 16 : 8;
+ sr_session_send(cb_data, &packet);
+
+ if ((ret = command_start_acquisition (ctx->usb->devhdl,
+ ctx->cur_samplerate, ctx->sample_wide)) != SR_OK) {
+ abort_acquisition(ctx);
+ return ret;
+ }
+
return SR_OK;
}
-/* This stops acquisition on ALL devices, ignoring device_index. */
-static int hw_dev_acquisition_stop(int dev_index, gpointer session_data)
+/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
+static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
{
- (void)dev_index;
- (void)session_data;
+ struct sr_dev_inst *sdi;
+
+ /* Avoid compiler warnings. */
+ (void)cb_data;
+
+ if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
+ return SR_ERR;
+
+ abort_acquisition(sdi->priv);
+
return SR_OK;
}
-SR_PRIV struct sr_dev_plugin fx2lafw_plugin_info = {
+SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
.name = "fx2lafw",
- .longname = "fx2lafw",
+ .longname = "fx2lafw (generic driver for FX2 based LAs)",
.api_version = 1,
.init = hw_init,
.cleanup = hw_cleanup,
projects / libsigrok.git / blobdiff