CHROMIUM: Add driver for Chromium Twinkie dongle
Add the hardware driver to acquire both Control Channels using the Chromium "Twinkie" dongle. Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vincent Palatin
parent
1aba657270
commit
6c71d32f27
|
|
@ -248,6 +248,12 @@ src_libdrivers_la_SOURCES += \
|
||||||
src/hardware/center-3xx/protocol.c \
|
src/hardware/center-3xx/protocol.c \
|
||||||
src/hardware/center-3xx/api.c
|
src/hardware/center-3xx/api.c
|
||||||
endif
|
endif
|
||||||
|
if HW_CHROMIUM_TWINKIE
|
||||||
|
libsigrok_la_SOURCES += \
|
||||||
|
src/hardware/chromium-twinkie/protocol.h \
|
||||||
|
src/hardware/chromium-twinkie/protocol.c \
|
||||||
|
src/hardware/chromium-twinkie/api.c
|
||||||
|
endif
|
||||||
if HW_CHRONOVU_LA
|
if HW_CHRONOVU_LA
|
||||||
src_libdrivers_la_SOURCES += \
|
src_libdrivers_la_SOURCES += \
|
||||||
src/hardware/chronovu-la/protocol.h \
|
src/hardware/chronovu-la/protocol.h \
|
||||||
|
|
|
||||||
|
|
@ -230,6 +230,7 @@ SR_DRIVER([Brymen BM86x], [brymen-bm86x], [libusb])
|
||||||
SR_DRIVER([Brymen DMM], [brymen-dmm], [libserialport])
|
SR_DRIVER([Brymen DMM], [brymen-dmm], [libserialport])
|
||||||
SR_DRIVER([CEM DT-885x], [cem-dt-885x], [libserialport])
|
SR_DRIVER([CEM DT-885x], [cem-dt-885x], [libserialport])
|
||||||
SR_DRIVER([Center 3xx], [center-3xx], [libserialport])
|
SR_DRIVER([Center 3xx], [center-3xx], [libserialport])
|
||||||
|
SR_DRIVER([Chromium Twinkie], [chromium-twinkie], [libusb])
|
||||||
SR_DRIVER([ChronoVu LA], [chronovu-la], [libusb libftdi])
|
SR_DRIVER([ChronoVu LA], [chronovu-la], [libusb libftdi])
|
||||||
SR_DRIVER([Colead SLM], [colead-slm], [libserialport])
|
SR_DRIVER([Colead SLM], [colead-slm], [libserialport])
|
||||||
SR_DRIVER([Conrad DIGI 35 CPU], [conrad-digi-35-cpu], [libserialport])
|
SR_DRIVER([Conrad DIGI 35 CPU], [conrad-digi-35-cpu], [libserialport])
|
||||||
|
|
|
||||||
|
|
@ -45,6 +45,9 @@ ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="0498", MODE="660", GROUP="plugdev",
|
||||||
# CEM DT-8852
|
# CEM DT-8852
|
||||||
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", MODE="660", GROUP="plugdev", TAG+="uaccess"
|
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", MODE="660", GROUP="plugdev", TAG+="uaccess"
|
||||||
|
|
||||||
|
# Chromium Twinkie dongle
|
||||||
|
ATTRS{idVendor}=="18d1", ATTRS{idProduct}=="500a", MODE="664", GROUP="plugdev"
|
||||||
|
|
||||||
# ChronoVu LA8 (new VID/PID)
|
# ChronoVu LA8 (new VID/PID)
|
||||||
# ChronoVu LA16 (new VID/PID)
|
# ChronoVu LA16 (new VID/PID)
|
||||||
ATTRS{idVendor}=="0403", ATTRS{idProduct}=="8867", MODE="660", GROUP="plugdev", TAG+="uaccess"
|
ATTRS{idVendor}=="0403", ATTRS{idProduct}=="8867", MODE="660", GROUP="plugdev", TAG+="uaccess"
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,524 @@
|
||||||
|
/*
|
||||||
|
* This file is part of the libsigrok project.
|
||||||
|
*
|
||||||
|
* Copyright 2014 Google, Inc
|
||||||
|
*
|
||||||
|
* 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, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <config.h>
|
||||||
|
#include <libusb.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <math.h>
|
||||||
|
#include <libsigrok/libsigrok.h>
|
||||||
|
#include "libsigrok-internal.h"
|
||||||
|
#include "protocol.h"
|
||||||
|
|
||||||
|
#define TWINKIE_VID 0x18d1
|
||||||
|
#define TWINKIE_PID 0x500a
|
||||||
|
|
||||||
|
#define USB_INTERFACE 1
|
||||||
|
#define USB_CONFIGURATION 1
|
||||||
|
|
||||||
|
#define MAX_RENUM_DELAY_MS 3000
|
||||||
|
#define NUM_SIMUL_TRANSFERS 32
|
||||||
|
|
||||||
|
#define SAMPLE_RATE SR_KHZ(2400)
|
||||||
|
|
||||||
|
static const int32_t hwopts[] = {
|
||||||
|
SR_CONF_CONN,
|
||||||
|
};
|
||||||
|
|
||||||
|
static const int32_t hwcaps[] = {
|
||||||
|
SR_CONF_LOGIC_ANALYZER,
|
||||||
|
SR_CONF_CONTINUOUS,
|
||||||
|
SR_CONF_CONN | SR_CONF_GET,
|
||||||
|
SR_CONF_SAMPLERATE | SR_CONF_GET,
|
||||||
|
SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
|
||||||
|
};
|
||||||
|
|
||||||
|
static const struct chan {
|
||||||
|
char *name;
|
||||||
|
int type;
|
||||||
|
} chan_defs[] = {
|
||||||
|
{"CC1", SR_CHANNEL_LOGIC},
|
||||||
|
{"CC2", SR_CHANNEL_LOGIC},
|
||||||
|
|
||||||
|
{NULL, 0}
|
||||||
|
};
|
||||||
|
|
||||||
|
static GSList *scan(struct sr_dev_driver *di, GSList *options)
|
||||||
|
{
|
||||||
|
struct drv_context *drvc;
|
||||||
|
struct dev_context *devc;
|
||||||
|
struct sr_dev_inst *sdi;
|
||||||
|
struct sr_usb_dev_inst *usb;
|
||||||
|
struct sr_channel *ch;
|
||||||
|
struct sr_config *src;
|
||||||
|
GSList *l, *devices, *conn_devices;
|
||||||
|
struct libusb_device_descriptor des;
|
||||||
|
libusb_device **devlist;
|
||||||
|
int ret, i, j;
|
||||||
|
const char *conn;
|
||||||
|
char connection_id[64];
|
||||||
|
|
||||||
|
drvc = di->context;
|
||||||
|
|
||||||
|
conn = NULL;
|
||||||
|
for (l = options; l; l = l->next) {
|
||||||
|
src = l->data;
|
||||||
|
switch (src->key) {
|
||||||
|
case SR_CONF_CONN:
|
||||||
|
conn = g_variant_get_string(src->data, NULL);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (conn)
|
||||||
|
conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
|
||||||
|
else
|
||||||
|
conn_devices = NULL;
|
||||||
|
|
||||||
|
/* Find all Twinkie devices */
|
||||||
|
devices = NULL;
|
||||||
|
libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
|
||||||
|
for (i = 0; devlist[i]; i++) {
|
||||||
|
if (conn) {
|
||||||
|
usb = NULL;
|
||||||
|
for (l = conn_devices; l; l = l->next) {
|
||||||
|
usb = l->data;
|
||||||
|
if (usb->bus == libusb_get_bus_number(devlist[i])
|
||||||
|
&& usb->address == libusb_get_device_address(devlist[i]))
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (!l)
|
||||||
|
/* This device matched none of the ones that
|
||||||
|
* matched the conn specification. */
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) {
|
||||||
|
sr_warn("Failed to get device descriptor: %s.",
|
||||||
|
libusb_error_name(ret));
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (des.idVendor != TWINKIE_VID || des.idProduct != TWINKIE_PID)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
|
||||||
|
|
||||||
|
sdi = g_malloc0(sizeof(struct sr_dev_inst));
|
||||||
|
sdi->status = SR_ST_INITIALIZING;
|
||||||
|
sdi->vendor = g_strdup("Chromium");
|
||||||
|
sdi->model = g_strdup("Twinkie");
|
||||||
|
sdi->driver = di;
|
||||||
|
sdi->connection_id = g_strdup(connection_id);
|
||||||
|
|
||||||
|
for (j = 0; chan_defs[j].name; j++)
|
||||||
|
if (!(ch = sr_channel_new(sdi, j, chan_defs[j].type,
|
||||||
|
TRUE, chan_defs[j].name)))
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
|
||||||
|
return NULL;
|
||||||
|
sdi->priv = devc;
|
||||||
|
drvc->instances = g_slist_append(drvc->instances, sdi);
|
||||||
|
devices = g_slist_append(devices, sdi);
|
||||||
|
|
||||||
|
sr_dbg("Found a Twinkie dongle.");
|
||||||
|
sdi->status = SR_ST_INACTIVE;
|
||||||
|
sdi->inst_type = SR_INST_USB;
|
||||||
|
sdi->conn = sr_usb_dev_inst_new(
|
||||||
|
libusb_get_bus_number(devlist[i]),
|
||||||
|
libusb_get_device_address(devlist[i]), NULL);
|
||||||
|
}
|
||||||
|
libusb_free_device_list(devlist, 1);
|
||||||
|
g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
|
||||||
|
|
||||||
|
return devices;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int twinkie_dev_open(struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
struct sr_dev_driver *di;
|
||||||
|
libusb_device **devlist;
|
||||||
|
struct sr_usb_dev_inst *usb;
|
||||||
|
struct libusb_device_descriptor des;
|
||||||
|
struct drv_context *drvc;
|
||||||
|
int ret, i, device_count;
|
||||||
|
char connection_id[64];
|
||||||
|
|
||||||
|
di = sdi->driver;
|
||||||
|
drvc = di->context;
|
||||||
|
usb = sdi->conn;
|
||||||
|
|
||||||
|
if (sdi->status == SR_ST_ACTIVE)
|
||||||
|
/* Device is already in use. */
|
||||||
|
return SR_ERR;
|
||||||
|
|
||||||
|
device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
|
||||||
|
if (device_count < 0) {
|
||||||
|
sr_err("Failed to get device list: %s.",
|
||||||
|
libusb_error_name(device_count));
|
||||||
|
return SR_ERR;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (i = 0; i < device_count; i++) {
|
||||||
|
if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
|
||||||
|
sr_err("Failed to get device descriptor: %s.",
|
||||||
|
libusb_error_name(ret));
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (des.idVendor != TWINKIE_VID || des.idProduct != TWINKIE_PID)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if ((sdi->status == SR_ST_INITIALIZING) ||
|
||||||
|
(sdi->status == SR_ST_INACTIVE)) {
|
||||||
|
/*
|
||||||
|
* Check device by its physical USB bus/port address.
|
||||||
|
*/
|
||||||
|
usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
|
||||||
|
if (strcmp(sdi->connection_id, connection_id))
|
||||||
|
/* This is not the one. */
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
|
||||||
|
if (usb->address == 0xff)
|
||||||
|
/*
|
||||||
|
* First time we touch this device after FW
|
||||||
|
* upload, so we don't know the address yet.
|
||||||
|
*/
|
||||||
|
usb->address = libusb_get_device_address(devlist[i]);
|
||||||
|
} else {
|
||||||
|
sr_err("Failed to open device: %s.",
|
||||||
|
libusb_error_name(ret));
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
|
||||||
|
if (ret == LIBUSB_ERROR_BUSY) {
|
||||||
|
sr_err("Unable to claim USB interface. Another "
|
||||||
|
"program or driver has already claimed it.");
|
||||||
|
break;
|
||||||
|
} else if (ret == LIBUSB_ERROR_NO_DEVICE) {
|
||||||
|
sr_err("Device has been disconnected.");
|
||||||
|
break;
|
||||||
|
} else if (ret != 0) {
|
||||||
|
sr_err("Unable to claim interface: %s.",
|
||||||
|
libusb_error_name(ret));
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((ret = twinkie_init_device(sdi)) != SR_OK) {
|
||||||
|
sr_err("Failed to init device.");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
sdi->status = SR_ST_ACTIVE;
|
||||||
|
sr_info("Opened device %d.%d, interface %d.",
|
||||||
|
usb->bus, usb->address, USB_INTERFACE);
|
||||||
|
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
libusb_free_device_list(devlist, 1);
|
||||||
|
|
||||||
|
if (sdi->status != SR_ST_ACTIVE) {
|
||||||
|
if (usb->devhdl) {
|
||||||
|
libusb_release_interface(usb->devhdl, USB_INTERFACE);
|
||||||
|
libusb_close(usb->devhdl);
|
||||||
|
usb->devhdl = NULL;
|
||||||
|
}
|
||||||
|
return SR_ERR;
|
||||||
|
}
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int dev_open(struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = twinkie_dev_open(sdi);
|
||||||
|
if (ret != SR_OK) {
|
||||||
|
sr_err("Unable to open device.");
|
||||||
|
return SR_ERR;
|
||||||
|
}
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int dev_close(struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
struct sr_usb_dev_inst *usb;
|
||||||
|
|
||||||
|
usb = sdi->conn;
|
||||||
|
if (usb->devhdl == NULL)
|
||||||
|
return SR_ERR;
|
||||||
|
|
||||||
|
sr_info("Closing device %d.%d interface %d.",
|
||||||
|
usb->bus, usb->address, USB_INTERFACE);
|
||||||
|
libusb_release_interface(usb->devhdl, USB_INTERFACE);
|
||||||
|
libusb_close(usb->devhdl);
|
||||||
|
usb->devhdl = NULL;
|
||||||
|
sdi->status = SR_ST_INACTIVE;
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int dev_clear(const struct sr_dev_driver *di)
|
||||||
|
{
|
||||||
|
return std_dev_clear(di, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int config_get(uint32_t key, GVariant **data,
|
||||||
|
const struct sr_dev_inst *sdi,
|
||||||
|
const struct sr_channel_group *cg)
|
||||||
|
{
|
||||||
|
struct sr_usb_dev_inst *usb;
|
||||||
|
char str[128];
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
(void)cg;
|
||||||
|
|
||||||
|
ret = SR_OK;
|
||||||
|
switch (key) {
|
||||||
|
case SR_CONF_CONN:
|
||||||
|
if (!sdi || !sdi->conn)
|
||||||
|
return SR_ERR_ARG;
|
||||||
|
usb = sdi->conn;
|
||||||
|
if (usb->address == 255)
|
||||||
|
/* Device still needs to re-enumerate after firmware
|
||||||
|
* upload, so we don't know its (future) address. */
|
||||||
|
return SR_ERR;
|
||||||
|
snprintf(str, 128, "%d.%d", usb->bus, usb->address);
|
||||||
|
*data = g_variant_new_string(str);
|
||||||
|
break;
|
||||||
|
case SR_CONF_SAMPLERATE:
|
||||||
|
*data = g_variant_new_uint64(SAMPLE_RATE);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return SR_ERR_NA;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int config_set(uint32_t key, GVariant *data,
|
||||||
|
const struct sr_dev_inst *sdi,
|
||||||
|
const struct sr_channel_group *cg)
|
||||||
|
{
|
||||||
|
struct dev_context *devc;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
(void)cg;
|
||||||
|
|
||||||
|
if (sdi->status != SR_ST_ACTIVE)
|
||||||
|
return SR_ERR_DEV_CLOSED;
|
||||||
|
|
||||||
|
devc = sdi->priv;
|
||||||
|
|
||||||
|
ret = SR_OK;
|
||||||
|
switch (key) {
|
||||||
|
case SR_CONF_LIMIT_SAMPLES:
|
||||||
|
devc->limit_samples = g_variant_get_uint64(data);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
ret = SR_ERR_NA;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int config_list(uint32_t key, GVariant **data,
|
||||||
|
const struct sr_dev_inst *sdi,
|
||||||
|
const struct sr_channel_group *cg)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
(void)sdi;
|
||||||
|
(void)cg;
|
||||||
|
|
||||||
|
ret = SR_OK;
|
||||||
|
switch (key) {
|
||||||
|
case SR_CONF_SCAN_OPTIONS:
|
||||||
|
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
|
||||||
|
hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
|
||||||
|
break;
|
||||||
|
case SR_CONF_DEVICE_OPTIONS:
|
||||||
|
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
|
||||||
|
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return SR_ERR_NA;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void abort_acquisition(struct dev_context *devc)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
|
||||||
|
devc->sent_samples = -1;
|
||||||
|
|
||||||
|
for (i = devc->num_transfers - 1; i >= 0; i--) {
|
||||||
|
if (devc->transfers[i])
|
||||||
|
libusb_cancel_transfer(devc->transfers[i]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static int receive_data(int fd, int revents, void *cb_data)
|
||||||
|
{
|
||||||
|
struct timeval tv;
|
||||||
|
struct dev_context *devc;
|
||||||
|
struct drv_context *drvc;
|
||||||
|
const struct sr_dev_inst *sdi;
|
||||||
|
struct sr_dev_driver *di;
|
||||||
|
|
||||||
|
(void)fd;
|
||||||
|
(void)revents;
|
||||||
|
|
||||||
|
sdi = cb_data;
|
||||||
|
di = sdi->driver;
|
||||||
|
drvc = di->context;
|
||||||
|
devc = sdi->priv;
|
||||||
|
|
||||||
|
tv.tv_sec = tv.tv_usec = 0;
|
||||||
|
libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
|
||||||
|
|
||||||
|
if (devc->sent_samples == -2) {
|
||||||
|
abort_acquisition(devc);
|
||||||
|
}
|
||||||
|
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int dev_acquisition_start(const struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
struct sr_dev_driver *di = sdi->driver;
|
||||||
|
struct dev_context *devc;
|
||||||
|
struct drv_context *drvc;
|
||||||
|
struct sr_usb_dev_inst *usb;
|
||||||
|
struct libusb_transfer *transfer;
|
||||||
|
unsigned int i, timeout, num_transfers;
|
||||||
|
int ret;
|
||||||
|
unsigned char *buf;
|
||||||
|
size_t size, convsize;
|
||||||
|
|
||||||
|
if (sdi->status != SR_ST_ACTIVE)
|
||||||
|
return SR_ERR_DEV_CLOSED;
|
||||||
|
|
||||||
|
drvc = di->context;
|
||||||
|
devc = sdi->priv;
|
||||||
|
usb = sdi->conn;
|
||||||
|
|
||||||
|
devc->sent_samples = 0;
|
||||||
|
/* reset per-CC context */
|
||||||
|
memset(devc->cc, 0, sizeof(devc->cc));
|
||||||
|
|
||||||
|
timeout = 1000;
|
||||||
|
num_transfers = 10;
|
||||||
|
size = 10*1024;
|
||||||
|
convsize = size * 8 * 256 /* largest size : only rollbacks/no edges */;
|
||||||
|
devc->submitted_transfers = 0;
|
||||||
|
|
||||||
|
devc->convbuffer_size = convsize;
|
||||||
|
if (!(devc->convbuffer = g_try_malloc(convsize))) {
|
||||||
|
sr_err("Conversion buffer malloc failed.");
|
||||||
|
return SR_ERR_MALLOC;
|
||||||
|
}
|
||||||
|
memset(devc->convbuffer, 0, devc->convbuffer_size);
|
||||||
|
|
||||||
|
devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
|
||||||
|
if (!devc->transfers) {
|
||||||
|
sr_err("USB transfers malloc failed.");
|
||||||
|
g_free(devc->convbuffer);
|
||||||
|
return SR_ERR_MALLOC;
|
||||||
|
}
|
||||||
|
|
||||||
|
devc->num_transfers = num_transfers;
|
||||||
|
for (i = 0; i < num_transfers; i++) {
|
||||||
|
if (!(buf = g_try_malloc(size))) {
|
||||||
|
sr_err("USB transfer buffer malloc failed.");
|
||||||
|
if (devc->submitted_transfers)
|
||||||
|
abort_acquisition(devc);
|
||||||
|
else {
|
||||||
|
g_free(devc->transfers);
|
||||||
|
g_free(devc->convbuffer);
|
||||||
|
}
|
||||||
|
return SR_ERR_MALLOC;
|
||||||
|
}
|
||||||
|
transfer = libusb_alloc_transfer(0);
|
||||||
|
libusb_fill_bulk_transfer(transfer, usb->devhdl,
|
||||||
|
3 | LIBUSB_ENDPOINT_IN, buf, size,
|
||||||
|
twinkie_receive_transfer, (void *)sdi, timeout);
|
||||||
|
if ((ret = libusb_submit_transfer(transfer)) != 0) {
|
||||||
|
sr_err("Failed to submit transfer: %s.",
|
||||||
|
libusb_error_name(ret));
|
||||||
|
libusb_free_transfer(transfer);
|
||||||
|
g_free(buf);
|
||||||
|
abort_acquisition(devc);
|
||||||
|
return SR_ERR;
|
||||||
|
}
|
||||||
|
devc->transfers[i] = transfer;
|
||||||
|
devc->submitted_transfers++;
|
||||||
|
}
|
||||||
|
|
||||||
|
devc->ctx = drvc->sr_ctx;
|
||||||
|
|
||||||
|
usb_source_add(sdi->session, devc->ctx, timeout, receive_data,
|
||||||
|
(void *)sdi);
|
||||||
|
|
||||||
|
/* Send header packet to the session bus. */
|
||||||
|
std_session_send_df_header(sdi);
|
||||||
|
|
||||||
|
if ((ret = twinkie_start_acquisition(sdi)) != SR_OK) {
|
||||||
|
abort_acquisition(devc);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int dev_acquisition_stop(struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
if (sdi->status != SR_ST_ACTIVE)
|
||||||
|
return SR_ERR_DEV_CLOSED;
|
||||||
|
|
||||||
|
abort_acquisition(sdi->priv);
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static struct sr_dev_driver chromium_twinkie_driver_info = {
|
||||||
|
.name = "chromium-twinkie",
|
||||||
|
.longname = "Chromium Twinkie",
|
||||||
|
.api_version = 1,
|
||||||
|
.init = std_init,
|
||||||
|
.cleanup = std_cleanup,
|
||||||
|
.scan = scan,
|
||||||
|
.dev_list = std_dev_list,
|
||||||
|
.dev_clear = dev_clear,
|
||||||
|
.config_get = config_get,
|
||||||
|
.config_set = config_set,
|
||||||
|
.config_list = config_list,
|
||||||
|
.dev_open = dev_open,
|
||||||
|
.dev_close = dev_close,
|
||||||
|
.dev_acquisition_start = dev_acquisition_start,
|
||||||
|
.dev_acquisition_stop = dev_acquisition_stop,
|
||||||
|
};
|
||||||
|
SR_REGISTER_DEV_DRIVER(chromium_twinkie_driver_info);
|
||||||
|
|
@ -0,0 +1,248 @@
|
||||||
|
/*
|
||||||
|
* This file is part of the libsigrok project.
|
||||||
|
*
|
||||||
|
* Copyright 2014 Google, Inc
|
||||||
|
*
|
||||||
|
* 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, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <config.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <libusb.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <errno.h>
|
||||||
|
#include <math.h>
|
||||||
|
#include <libsigrok/libsigrok.h>
|
||||||
|
#include "libsigrok-internal.h"
|
||||||
|
#include "protocol.h"
|
||||||
|
|
||||||
|
SR_PRIV int twinkie_start_acquisition(const struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
(void)sdi;
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
SR_PRIV int twinkie_init_device(const struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
(void)sdi;
|
||||||
|
|
||||||
|
return SR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void finish_acquisition(struct sr_dev_inst *sdi)
|
||||||
|
{
|
||||||
|
struct sr_datafeed_packet packet;
|
||||||
|
struct dev_context *devc = sdi->priv;
|
||||||
|
|
||||||
|
/* Terminate session. */
|
||||||
|
packet.type = SR_DF_END;
|
||||||
|
sr_session_send(sdi, &packet);
|
||||||
|
|
||||||
|
/* Remove fds from polling. */
|
||||||
|
usb_source_remove(sdi->session, devc->ctx);
|
||||||
|
|
||||||
|
devc->num_transfers = 0;
|
||||||
|
g_free(devc->transfers);
|
||||||
|
g_free(devc->convbuffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void free_transfer(struct libusb_transfer *transfer)
|
||||||
|
{
|
||||||
|
struct sr_dev_inst *sdi;
|
||||||
|
struct dev_context *devc;
|
||||||
|
unsigned int i;
|
||||||
|
|
||||||
|
sdi = transfer->user_data;
|
||||||
|
devc = sdi->priv;
|
||||||
|
|
||||||
|
g_free(transfer->buffer);
|
||||||
|
transfer->buffer = NULL;
|
||||||
|
libusb_free_transfer(transfer);
|
||||||
|
|
||||||
|
for (i = 0; i < devc->num_transfers; i++) {
|
||||||
|
if (devc->transfers[i] == transfer) {
|
||||||
|
devc->transfers[i] = NULL;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
devc->submitted_transfers--;
|
||||||
|
if (devc->submitted_transfers == 0)
|
||||||
|
finish_acquisition(sdi);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void export_samples(const struct sr_dev_inst *sdi, size_t cnt)
|
||||||
|
{
|
||||||
|
struct sr_datafeed_packet packet;
|
||||||
|
struct sr_datafeed_logic logic;
|
||||||
|
struct dev_context *devc = sdi->priv;
|
||||||
|
|
||||||
|
/* export the received data */
|
||||||
|
packet.type = SR_DF_LOGIC;
|
||||||
|
packet.payload = &logic;
|
||||||
|
if (devc->limit_samples &&
|
||||||
|
cnt > devc->limit_samples - devc->sent_samples)
|
||||||
|
cnt = devc->limit_samples - devc->sent_samples;
|
||||||
|
logic.length = cnt;
|
||||||
|
logic.unitsize = 1;
|
||||||
|
logic.data = devc->convbuffer;
|
||||||
|
sr_session_send(sdi, &packet);
|
||||||
|
devc->sent_samples += cnt;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void expand_sample_data(const struct sr_dev_inst *sdi,
|
||||||
|
const uint8_t *src, size_t srccnt)
|
||||||
|
{
|
||||||
|
struct dev_context *devc = sdi->priv;
|
||||||
|
int i, f;
|
||||||
|
size_t b;
|
||||||
|
size_t rdy_samples, left_samples;
|
||||||
|
int frames = srccnt / 64;
|
||||||
|
|
||||||
|
for (f = 0; f < frames; f++) {
|
||||||
|
int ch = (src[1] >> 4) & 3; /* samples channel number */
|
||||||
|
int bit = 1 << ch; /* channel bit mask */
|
||||||
|
struct cc_context *cc = devc->cc + ch;
|
||||||
|
uint8_t *dest = devc->convbuffer + cc->idx;
|
||||||
|
|
||||||
|
if (ch >= 2) /* only acquires CCx channels */
|
||||||
|
continue;
|
||||||
|
|
||||||
|
/* TODO: check timestamp, overflow, sequence number */
|
||||||
|
|
||||||
|
/* skip header, go to edges data */
|
||||||
|
src+=4;
|
||||||
|
for (i = 0; i < 60; i++,src++)
|
||||||
|
if (*src == cc->prev_src) {
|
||||||
|
cc->rollbacks++;
|
||||||
|
} else {
|
||||||
|
uint8_t diff = *src - cc->prev_src;
|
||||||
|
int fixup = cc->rollbacks && (((int)*src < (int)cc->prev_src) || (*src == 0xff));
|
||||||
|
size_t total = (fixup ? cc->rollbacks - 1 : cc->rollbacks) * 256 + diff;
|
||||||
|
|
||||||
|
if (total + cc->idx > devc->convbuffer_size) {
|
||||||
|
sr_warn("overflow %d+%zd/%zd\n",
|
||||||
|
cc->idx, total,
|
||||||
|
devc->convbuffer_size);
|
||||||
|
/* reset current decoding */
|
||||||
|
cc->rollbacks = 0;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* insert bits in the buffer */
|
||||||
|
if (cc->level)
|
||||||
|
for (b = 0 ; b < total ; b++, dest++)
|
||||||
|
*dest |= bit;
|
||||||
|
else
|
||||||
|
dest += total;
|
||||||
|
cc->idx += total;
|
||||||
|
|
||||||
|
/* flip level on the next edge */
|
||||||
|
cc->level = ~cc->level;
|
||||||
|
|
||||||
|
cc->rollbacks = 0;
|
||||||
|
cc->prev_src = *src;
|
||||||
|
}
|
||||||
|
/* expand repeated rollbacks */
|
||||||
|
if (cc->rollbacks > 1) {
|
||||||
|
size_t total = 256 * (cc->rollbacks - 1);
|
||||||
|
if (total + cc->idx > devc->convbuffer_size) {
|
||||||
|
sr_warn("overflow %d+%zd/%zd\n",
|
||||||
|
cc->idx, total, devc->convbuffer_size);
|
||||||
|
/* reset current decoding */
|
||||||
|
total = 0;
|
||||||
|
}
|
||||||
|
/* insert bits in the buffer */
|
||||||
|
if (cc->level)
|
||||||
|
for (b = 0 ; b < total ; b++, dest++)
|
||||||
|
*dest |= bit ;
|
||||||
|
cc->idx += total;
|
||||||
|
cc->rollbacks = 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* samples ready to be pushed (with both channels) */
|
||||||
|
rdy_samples = MIN(devc->cc[0].idx, devc->cc[1].idx);
|
||||||
|
left_samples = MAX(devc->cc[0].idx, devc->cc[1].idx) - rdy_samples;
|
||||||
|
/* skip empty transfer */
|
||||||
|
if (rdy_samples == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
export_samples(sdi, rdy_samples);
|
||||||
|
|
||||||
|
/* clean up what we have sent */
|
||||||
|
memmove(devc->convbuffer, devc->convbuffer + rdy_samples, left_samples);
|
||||||
|
memset(devc->convbuffer + left_samples, 0, rdy_samples);
|
||||||
|
devc->cc[0].idx -= rdy_samples;
|
||||||
|
devc->cc[1].idx -= rdy_samples;
|
||||||
|
}
|
||||||
|
|
||||||
|
SR_PRIV void twinkie_receive_transfer(struct libusb_transfer *transfer)
|
||||||
|
{
|
||||||
|
gboolean packet_has_error = FALSE;
|
||||||
|
struct sr_dev_inst *sdi;
|
||||||
|
struct dev_context *devc;
|
||||||
|
|
||||||
|
sdi = transfer->user_data;
|
||||||
|
devc = sdi->priv;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If acquisition has already ended, just free any queued up
|
||||||
|
* transfer that come in.
|
||||||
|
*/
|
||||||
|
if (devc->sent_samples < 0) {
|
||||||
|
free_transfer(transfer);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (transfer->status || transfer->actual_length)
|
||||||
|
sr_info("receive_transfer(): status %d received %d bytes.",
|
||||||
|
transfer->status, transfer->actual_length);
|
||||||
|
|
||||||
|
switch (transfer->status) {
|
||||||
|
case LIBUSB_TRANSFER_NO_DEVICE:
|
||||||
|
devc->sent_samples = -2;
|
||||||
|
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 % 64) {
|
||||||
|
sr_err("Bad USB packet size.");
|
||||||
|
packet_has_error = TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (transfer->actual_length == 0 || packet_has_error)
|
||||||
|
goto resubmit;
|
||||||
|
|
||||||
|
/* decode received edges */
|
||||||
|
expand_sample_data(sdi, transfer->buffer, transfer->actual_length);
|
||||||
|
|
||||||
|
if (devc->limit_samples &&
|
||||||
|
(uint64_t)devc->sent_samples >= devc->limit_samples) {
|
||||||
|
devc->sent_samples = -2;
|
||||||
|
free_transfer(transfer);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
resubmit:
|
||||||
|
if (libusb_submit_transfer(transfer) != LIBUSB_SUCCESS)
|
||||||
|
free_transfer(transfer);
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,59 @@
|
||||||
|
/*
|
||||||
|
* This file is part of the libsigrok project.
|
||||||
|
*
|
||||||
|
* Copyright 2014 Google, Inc
|
||||||
|
*
|
||||||
|
* 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, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef LIBSIGROK_HARDWARE_CHROMIUM_TWINKIE_PROTOCOL_H
|
||||||
|
#define LIBSIGROK_HARDWARE_CHROMIUM_TWINKIE_PROTOCOL_H
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <glib.h>
|
||||||
|
#include <libsigrok/libsigrok.h>
|
||||||
|
#include "libsigrok-internal.h"
|
||||||
|
|
||||||
|
#define LOG_PREFIX "twinkie"
|
||||||
|
|
||||||
|
/** Private, per-CC logical channel context. */
|
||||||
|
struct cc_context {
|
||||||
|
int idx;
|
||||||
|
int rollbacks;
|
||||||
|
uint8_t prev_src;
|
||||||
|
uint8_t level;
|
||||||
|
};
|
||||||
|
|
||||||
|
/** Private, per-device-instance driver context. */
|
||||||
|
struct dev_context {
|
||||||
|
/** Maximum number of samples to capture, if nonzero. */
|
||||||
|
uint64_t limit_samples;
|
||||||
|
|
||||||
|
int64_t sent_samples;
|
||||||
|
int submitted_transfers;
|
||||||
|
uint8_t *convbuffer;
|
||||||
|
size_t convbuffer_size;
|
||||||
|
|
||||||
|
unsigned int num_transfers;
|
||||||
|
struct libusb_transfer **transfers;
|
||||||
|
struct sr_context *ctx;
|
||||||
|
|
||||||
|
struct cc_context cc[2];
|
||||||
|
};
|
||||||
|
|
||||||
|
SR_PRIV int twinkie_start_acquisition(const struct sr_dev_inst *sdi);
|
||||||
|
SR_PRIV int twinkie_init_device(const struct sr_dev_inst *sdi);
|
||||||
|
SR_PRIV void twinkie_receive_transfer(struct libusb_transfer *transfer);
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Reference in New Issue