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added pipistrello-ols 

Conflicts:
	configure.ac
	src/hwdriver.c
This commit is contained in:
magnuskarlsson 2014-05-10 15:44:13 -07:00 committed by Bert Vermeulen
parent 562b7ae513
commit 4bd80e1228
7 changed files with 1399 additions and 0 deletions
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6
Makefile.am
View File

@ -264,6 +264,12 @@ libsigrok_la_SOURCES += \
src/hardware/openbench-logic-sniffer/protocol.c \
src/hardware/openbench-logic-sniffer/api.c
endif
if HW_PIPISTRELLO_OLS
libsigrok_la_SOURCES += \
src/hardware/pipistrello-ols/protocol.h \
src/hardware/pipistrello-ols/protocol.c \
src/hardware/pipistrello-ols/api.c
endif
if HW_RIGOL_DS
libsigrok_la_SOURCES += \
src/hardware/rigol-ds/protocol.h \

2
README.devices
View File

@ -75,6 +75,7 @@ The following drivers/devices do not need any firmware upload:
- mic-985xx (including all subdrivers)
- norma-dmm
- openbench-logic-sniffer
- pipistrello-ols
- rigol-ds
- serial-dmm (including all subdrivers)
- teleinfo
@ -133,6 +134,7 @@ The following drivers/devices do not require a serial port specification:
- ikalogic-scanaplus
- kecheng-kc-330b
- lascar-el-usb
- pipistrello-ols
- rigol-ds (USBTMC or TCP)
- saleae-logic16
- sysclk-lwla

7
configure.ac
View File

@ -129,6 +129,7 @@ DRIVER([MIC 985xx], [mic-985xx])
DRIVER([Motech LPS 30x], [motech-lps-30x])
DRIVER([Norma DMM], [norma-dmm])
DRIVER([OpenBench Logic Sniffer], [openbench-logic-sniffer])
DRIVER([Pipistrello-OLS], [pipistrello-ols])
DRIVER([Rigol DS], [rigol-ds])
DRIVER([Saleae Logic16], [saleae-logic16])
DRIVER([serial DMM], [serial-dmm])
@ -375,6 +376,7 @@ fi
if test "x$have_libftdi" = "xno"; then
HW_ASIX_SIGMA="no"; HW_CHRONOVU_LA="no"; HW_IKALOGIC_SCANAPLUS="no";
HW_PIPISTRELLO_OLS="no";
fi
# glibmm-2.4 is needed for the C++ bindings.
@ -581,6 +583,11 @@ if test "x$HW_OPENBENCH_LOGIC_SNIFFER" = "xyes"; then
AC_DEFINE(HAVE_HW_OPENBENCH_LOGIC_SNIFFER, 1, [OpenBench Logic Sniffer (OLS) support])
fi
AM_CONDITIONAL(HW_PIPISTRELLO_OLS, test x$HW_PIPISTRELLO_OLS = xyes)
if test "x$HW_PIPISTRELLO_OLS" = "xyes"; then
AC_DEFINE(HAVE_HW_PIPISTRELLO_OLS, 1, [Pipistrello OLS support])
fi
AM_CONDITIONAL(HW_RIGOL_DS, test x$HW_RIGOL_DS = xyes)
if test "x$HW_RIGOL_DS" = "xyes"; then
AC_DEFINE(HAVE_HW_RIGOL_DS, 1, [Rigol DS support])

6
src/drivers.c
View File

@ -109,6 +109,9 @@ extern SR_PRIV struct sr_dev_driver siemens_b102x_driver_info;
#ifdef HAVE_HW_OPENBENCH_LOGIC_SNIFFER
extern SR_PRIV struct sr_dev_driver ols_driver_info;
#endif
#ifdef HAVE_HW_PIPISTRELLO_OLS
extern SR_PRIV struct sr_dev_driver p_ols_driver_info;
#endif
#ifdef HAVE_HW_RIGOL_DS
extern SR_PRIV struct sr_dev_driver rigol_ds_driver_info;
#endif
@ -277,6 +280,9 @@ SR_PRIV struct sr_dev_driver *drivers_list[] = {
#ifdef HAVE_HW_OPENBENCH_LOGIC_SNIFFER
&ols_driver_info,
#endif
#ifdef HAVE_HW_PIPISTRELLO_OLS
&p_ols_driver_info,
#endif
#ifdef HAVE_HW_RIGOL_DS
&rigol_ds_driver_info,
#endif

678
src/hardware/pipistrello-ols/api.c Normal file
View File

@ -0,0 +1,678 @@
/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "protocol.h"
#define USB_VENDOR_ID 0x0403
#define USB_DEVICE_ID 0x6010
#define USB_VENDOR_NAME "Saanlima"
#define USB_IPRODUCT "Pipistrello LX45"
static const int32_t hwcaps[] = {
SR_CONF_LOGIC_ANALYZER,
SR_CONF_SAMPLERATE,
SR_CONF_TRIGGER_TYPE,
SR_CONF_CAPTURE_RATIO,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_PATTERN_MODE,
SR_CONF_EXTERNAL_CLOCK,
SR_CONF_SWAP,
SR_CONF_RLE,
};
#define STR_PATTERN_NONE "None"
#define STR_PATTERN_EXTERNAL "External"
#define STR_PATTERN_INTERNAL "Internal"
/* Supported methods of test pattern outputs */
enum {
/**
* Capture pins 31:16 (unbuffered wing) output a test pattern
* that can captured on pins 0:15.
*/
PATTERN_EXTERNAL,
/** Route test pattern internally to capture buffer. */
PATTERN_INTERNAL,
};
static const char *patterns[] = {
STR_PATTERN_NONE,
STR_PATTERN_EXTERNAL,
STR_PATTERN_INTERNAL,
};
/* Channels are numbered 0-31 (on the PCB silkscreen). */
SR_PRIV const char *p_ols_channel_names[NUM_CHANNELS + 1] = {
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
"13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
"24", "25", "26", "27", "28", "29", "30", "31",
NULL,
};
/* Default supported samplerates, can be overridden by device metadata. */
static const uint64_t samplerates[] = {
SR_HZ(10),
SR_MHZ(200),
SR_HZ(1),
};
SR_PRIV struct sr_dev_driver p_ols_driver_info;
static struct sr_dev_driver *di = &p_ols_driver_info;
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static GSList *scan(GSList *options)
{
struct sr_dev_inst *sdi;
struct drv_context *drvc;
struct dev_context *devc;
GSList *devices;
int ret, i;
char buf[70];
int bytes_read;
(void)options;
drvc = di->priv;
devices = NULL;
/* Allocate memory for our private device context. */
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_err("Device context malloc failed.");
goto err_free_nothing;
}
/* Device-specific settings */
devc->max_samples = devc->max_samplerate = devc->protocol_version = 0;
/* Acquisition settings */
devc->limit_samples = devc->capture_ratio = 0;
devc->trigger_at = -1;
devc->channel_mask = 0xffffffff;
devc->flag_reg = 0;
/* Allocate memory for the incoming ftdi data. */
if (!(devc->ftdi_buf = g_try_malloc0(FTDI_BUF_SIZE))) {
sr_err("ftdi_buf malloc failed.");
goto err_free_devc;
}
/* Allocate memory for the FTDI context (ftdic) and initialize it. */
if (!(devc->ftdic = ftdi_new())) {
sr_err("Failed to initialize libftdi.");
goto err_free_ftdi_buf;;
}
/* Try to open the FTDI device */
if (p_ols_open(devc) != SR_OK) {
goto err_free_ftdic;
}
/* The discovery procedure is like this: first send the Reset
* command (0x00) 5 times, since the device could be anywhere
* in a 5-byte command. Then send the ID command (0x02).
* If the device responds with 4 bytes ("OLS1" or "SLA1"), we
* have a match.
*/
ret = SR_OK;
for (i = 0; i < 5; i++) {
if ((ret = write_shortcommand(devc, CMD_RESET)) != SR_OK) {
break;
}
}
if (ret != SR_OK) {
sr_err("Could not reset device. Quitting.");
goto err_close_ftdic;
}
write_shortcommand(devc, CMD_ID);
/* Read the response data. */
bytes_read = ftdi_read_data(devc->ftdic, (uint8_t *)buf, 4);
if (bytes_read < 0) {
sr_err("Failed to read FTDI data (%d): %s.",
bytes_read, ftdi_get_error_string(devc->ftdic));
goto err_close_ftdic;
}
if (bytes_read == 0) {
goto err_close_ftdic;
}
if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
goto err_close_ftdic;
/* Definitely using the OLS protocol, check if it supports
* the metadata command.
*/
write_shortcommand(devc, CMD_METADATA);
/* Read the metadata. */
bytes_read = ftdi_read_data(devc->ftdic, (uint8_t *)buf, 64);
if (bytes_read < 0) {
sr_err("Failed to read FTDI data (%d): %s.",
bytes_read, ftdi_get_error_string(devc->ftdic));
goto err_close_ftdic;
}
if (bytes_read == 0) {
goto err_close_ftdic;
}
/* Close device. We'll reopen it again when we need it. */
p_ols_close(devc);
/* Parse the metadata. */
sdi = p_ols_get_metadata((uint8_t *)buf, bytes_read, devc);
sdi->index = 0;
/* Configure samplerate and divider. */
if (p_ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
sr_dbg("Failed to set default samplerate (%"PRIu64").",
DEFAULT_SAMPLERATE);
/* Clear trigger masks, values and stages. */
p_ols_configure_channels(sdi);
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
return devices;
err_close_ftdic:
p_ols_close(devc);
err_free_ftdic:
ftdi_free(devc->ftdic); /* NOT free() or g_free()! */
err_free_ftdi_buf:
g_free(devc->ftdi_buf);
err_free_devc:
g_free(devc);
err_free_nothing:
return NULL;
}
static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
}
static void clear_helper(void *priv)
{
struct dev_context *devc;
devc = priv;
ftdi_free(devc->ftdic);
g_free(devc->ftdi_buf);
}
static int dev_clear(void)
{
return std_dev_clear(di, clear_helper);
}
static int cleanup(void)
{
return dev_clear();
}
static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
struct dev_context *devc;
(void)cg;
if (!sdi)
return SR_ERR_ARG;
devc = sdi->priv;
switch (id) {
case SR_CONF_SAMPLERATE:
*data = g_variant_new_uint64(devc->cur_samplerate);
break;
case SR_CONF_CAPTURE_RATIO:
*data = g_variant_new_uint64(devc->capture_ratio);
break;
case SR_CONF_LIMIT_SAMPLES:
*data = g_variant_new_uint64(devc->limit_samples);
break;
case SR_CONF_PATTERN_MODE:
if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
*data = g_variant_new_string(STR_PATTERN_EXTERNAL);
else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
*data = g_variant_new_string(STR_PATTERN_INTERNAL);
else
*data = g_variant_new_string(STR_PATTERN_NONE);
break;
case SR_CONF_RLE:
*data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
break;
case SR_CONF_EXTERNAL_CLOCK:
*data = g_variant_new_boolean(devc->flag_reg & FLAG_CLOCK_EXTERNAL ? TRUE : FALSE);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
struct dev_context *devc;
uint16_t flag;
uint64_t tmp_u64;
int ret;
const char *stropt;
(void)cg;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
devc = sdi->priv;
switch (id) {
case SR_CONF_SAMPLERATE:
tmp_u64 = g_variant_get_uint64(data);
if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
return SR_ERR_SAMPLERATE;
ret = p_ols_set_samplerate(sdi, g_variant_get_uint64(data));
break;
case SR_CONF_LIMIT_SAMPLES:
tmp_u64 = g_variant_get_uint64(data);
if (tmp_u64 < MIN_NUM_SAMPLES)
return SR_ERR;
devc->limit_samples = tmp_u64;
ret = SR_OK;
break;
case SR_CONF_CAPTURE_RATIO:
devc->capture_ratio = g_variant_get_uint64(data);
if (devc->capture_ratio < 0 || devc->capture_ratio > 100) {
devc->capture_ratio = 0;
ret = SR_ERR;
} else
ret = SR_OK;
break;
case SR_CONF_EXTERNAL_CLOCK:
if (g_variant_get_boolean(data)) {
sr_info("Enabling external clock.");
devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
} else {
sr_info("Disabled external clock.");
devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
}
ret = SR_OK;
break;
case SR_CONF_PATTERN_MODE:
stropt = g_variant_get_string(data, NULL);
ret = SR_OK;
flag = 0xffff;
if (!strcmp(stropt, STR_PATTERN_NONE)) {
sr_info("Disabling test modes.");
flag = 0x0000;
}else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
sr_info("Enabling internal test mode.");
flag = FLAG_INTERNAL_TEST_MODE;
} else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
sr_info("Enabling external test mode.");
flag = FLAG_EXTERNAL_TEST_MODE;
} else {
ret = SR_ERR;
}
if (flag != 0xffff) {
devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
devc->flag_reg |= flag;
}
break;
case SR_CONF_SWAP:
if (g_variant_get_boolean(data)) {
sr_info("Enabling channel swapping.");
devc->flag_reg |= FLAG_SWAP_CHANNELS;
} else {
sr_info("Disabling channel swapping.");
devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
}
ret = SR_OK;
break;
case SR_CONF_RLE:
if (g_variant_get_boolean(data)) {
sr_info("Enabling RLE.");
devc->flag_reg |= FLAG_RLE;
} else {
sr_info("Disabling RLE.");
devc->flag_reg &= ~FLAG_RLE;
}
ret = SR_OK;
break;
default:
ret = SR_ERR_NA;
}
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
struct dev_context *devc;
GVariant *gvar, *grange[2];
GVariantBuilder gvb;
int num_channels, i;
(void)cg;
switch (key) {
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
break;
case SR_CONF_SAMPLERATE:
g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
ARRAY_SIZE(samplerates), sizeof(uint64_t));
g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
*data = g_variant_builder_end(&gvb);
break;
case SR_CONF_TRIGGER_TYPE:
*data = g_variant_new_string(TRIGGER_TYPE);
break;
case SR_CONF_PATTERN_MODE:
*data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
break;
case SR_CONF_LIMIT_SAMPLES:
if (!sdi)
return SR_ERR_ARG;
devc = sdi->priv;
if (devc->flag_reg & FLAG_RLE)
return SR_ERR_NA;
if (devc->max_samples == 0)
/* Device didn't specify sample memory size in metadata. */
return SR_ERR_NA;
/*
* Channel groups are turned off if no channels in that group are
* enabled, making more room for samples for the enabled group.
*/
p_ols_configure_channels(sdi);
num_channels = 0;
for (i = 0; i < 4; i++) {
if (devc->channel_mask & (0xff << (i * 8)))
num_channels++;
}
if (num_channels == 0) {
/* This can happen, but shouldn't cause too much drama.
* However we can't continue because the code below would
* divide by zero. */
break;
}
grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
grange[1] = g_variant_new_uint64(devc->max_samples / num_channels);
*data = g_variant_new_tuple(grange, 2);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
int ret;
devc = sdi->priv;
if (p_ols_open(devc) != SR_OK) {
return SR_ERR;
} else {
sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
}
static int dev_close(struct sr_dev_inst *sdi)
{
int ret;
struct dev_context *devc;
ret = SR_OK;
devc = sdi->priv;
if (sdi->status == SR_ST_ACTIVE) {
sr_dbg("Status ACTIVE, closing device.");
ret = p_ols_close(devc);
} else {
sr_spew("Status not ACTIVE, nothing to do.");
}
sdi->status = SR_ST_INACTIVE;
return ret;
}
static int set_trigger(const struct sr_dev_inst *sdi, int stage)
{
struct dev_context *devc;
uint8_t cmd, arg[4];
devc = sdi->priv;
cmd = CMD_SET_TRIGGER_MASK + stage * 4;
arg[0] = devc->trigger_mask[stage] & 0xff;
arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
if (write_longcommand(devc, cmd, arg) != SR_OK)
return SR_ERR;
cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
arg[0] = devc->trigger_value[stage] & 0xff;
arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
if (write_longcommand(devc, cmd, arg) != SR_OK)
return SR_ERR;
cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
arg[0] = arg[1] = arg[3] = 0x00;
arg[2] = stage;
if (stage == devc->num_stages)
/* Last stage, fire when this one matches. */
arg[3] |= TRIGGER_START;
if (write_longcommand(devc, cmd, arg) != SR_OK)
return SR_ERR;
return SR_OK;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
struct dev_context *devc;
uint32_t samplecount, readcount, delaycount;
uint8_t changrp_mask, arg[4];
int num_channels;
int ret, i;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
devc = sdi->priv;
if (p_ols_configure_channels(sdi) != SR_OK) {
sr_err("Failed to configure channels.");
return SR_ERR;
}
/*
* Enable/disable channel groups in the flag register according to the
* channel mask. Calculate this here, because num_channels is needed
* to limit readcount.
*/
changrp_mask = 0;
num_channels = 0;
for (i = 0; i < 4; i++) {
if (devc->channel_mask & (0xff << (i * 8))) {
changrp_mask |= (1 << i);
num_channels++;
}
}
/*
* Limit readcount to prevent reading past the end of the hardware
* buffer.
*/
sr_dbg("max_samples = %d", devc->max_samples);
sr_dbg("limit_samples = %d", devc->limit_samples);
samplecount = MIN(devc->max_samples / num_channels, devc->limit_samples);
readcount = samplecount / 4;
sr_dbg("Samplecount = %d", samplecount);
/* Rather read too many samples than too few. */
if (samplecount % 4 != 0)
readcount++;
/* Basic triggers. */
if (devc->trigger_mask[0] != 0x00000000) {
/* At least one channel has a trigger on it. */
delaycount = readcount * (1 - devc->capture_ratio / 100.0);
devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
for (i = 0; i <= devc->num_stages; i++) {
sr_dbg("Setting stage %d trigger.", i);
if ((ret = set_trigger(sdi, i)) != SR_OK)
return ret;
}
} else {
/* No triggers configured, force trigger on first stage. */
sr_dbg("Forcing trigger at stage 0.");
if ((ret = set_trigger(sdi, 0)) != SR_OK)
return ret;
delaycount = readcount;
}
/* Samplerate. */
sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
devc->cur_samplerate, devc->cur_samplerate_divider);
arg[0] = devc->cur_samplerate_divider & 0xff;
arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
arg[3] = 0x00;
if (write_longcommand(devc, CMD_SET_DIVIDER, arg) != SR_OK)
return SR_ERR;
/* Send extended sample limit and pre/post-trigger capture ratio. */
arg[0] = ((readcount - 1) & 0xff);
arg[1] = ((readcount - 1) & 0xff00) >> 8;
arg[2] = ((readcount - 1) & 0xff0000) >> 16;
arg[3] = ((readcount - 1) & 0xff000000) >> 24;
if (write_longcommand(devc, CMD_CAPTURE_COUNT, arg) != SR_OK)
return SR_ERR;
arg[0] = ((delaycount - 1) & 0xff);
arg[1] = ((delaycount - 1) & 0xff00) >> 8;
arg[2] = ((delaycount - 1) & 0xff0000) >> 16;
arg[3] = ((delaycount - 1) & 0xff000000) >> 24;
if (write_longcommand(devc, CMD_CAPTURE_DELAY, arg) != SR_OK)
return SR_ERR;
/* Flag register. */
sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
devc->flag_reg & FLAG_RLE ? "on" : "off",
devc->flag_reg & FLAG_FILTER ? "on": "off",
devc->flag_reg & FLAG_DEMUX ? "on" : "off");
/* 1 means "disable channel". */
devc->flag_reg |= ~(changrp_mask << 2) & 0x3c;
arg[0] = devc->flag_reg & 0xff;
arg[1] = devc->flag_reg >> 8;
arg[2] = arg[3] = 0x00;
if (write_longcommand(devc, CMD_SET_FLAGS, arg) != SR_OK)
return SR_ERR;
/* Start acquisition on the device. */
if (write_shortcommand(devc, CMD_RUN) != SR_OK)
return SR_ERR;
/* Reset all operational states. */
devc->rle_count = devc->num_transfers = 0;
devc->num_samples = devc->num_bytes = 0;
devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
memset(devc->sample, 0, 4);
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Hook up a dummy handler to receive data from the device. */
sr_source_add(-1, G_IO_IN, 0, p_ols_receive_data, (void *)sdi);
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
devc = sdi->priv;
sr_dbg("Stopping acquisition.");
write_shortcommand(devc, CMD_RESET);
write_shortcommand(devc, CMD_RESET);
write_shortcommand(devc, CMD_RESET);
write_shortcommand(devc, CMD_RESET);
write_shortcommand(devc, CMD_RESET);
sr_source_remove(-1);
/* Send end packet to the session bus. */
sr_dbg("Sending SR_DF_END.");
packet.type = SR_DF_END;
sr_session_send(cb_data, &packet);
return SR_OK;
}
SR_PRIV struct sr_dev_driver p_ols_driver_info = {
.name = "p_ols",
.longname = "Pipistrello OLS",
.api_version = 1,
.init = init,
.cleanup = cleanup,
.scan = scan,
.dev_list = 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,
.priv = NULL,
};

576
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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "protocol.h"
extern SR_PRIV struct sr_dev_driver p_ols_driver_info;
static struct sr_dev_driver *di = &p_ols_driver_info;
SR_PRIV int write_shortcommand(struct dev_context *devc, uint8_t command)
{
uint8_t buf[1];
int bytes_written;
sr_dbg("Sending cmd 0x%.2x.", command);
buf[0] = command;
bytes_written = ftdi_write_data(devc->ftdic, buf, 1);
if (bytes_written < 0) {
sr_err("Failed to write FTDI data (%d): %s.",
bytes_written, ftdi_get_error_string(devc->ftdic));
return SR_ERR;
} else if (bytes_written != 1) {
sr_err("FTDI write error, only %d/%d bytes written: %s.",
bytes_written, 1, ftdi_get_error_string(devc->ftdic));
return SR_ERR;
}
return SR_OK;
}
SR_PRIV int write_longcommand(struct dev_context *devc, uint8_t command, uint8_t *data)
{
uint8_t buf[5];
int bytes_written;
sr_dbg("Sending cmd 0x%.2x data 0x%.2x%.2x%.2x%.2x.", command,
data[0], data[1], data[2], data[3]);
buf[0] = command;
buf[1] = data[0];
buf[2] = data[1];
buf[3] = data[2];
buf[4] = data[3];
bytes_written = ftdi_write_data(devc->ftdic, buf, 5);
if (bytes_written < 0) {
sr_err("Failed to write FTDI data (%d): %s.",
bytes_written, ftdi_get_error_string(devc->ftdic));
return SR_ERR;
} else if (bytes_written != 5) {
sr_err("FTDI write error, only %d/%d bytes written: %s.",
bytes_written, 1, ftdi_get_error_string(devc->ftdic));
return SR_ERR;
}
return SR_OK;
}
SR_PRIV int p_ols_open(struct dev_context *devc)
{
int ret;
/* Note: Caller checks devc and devc->ftdic. */
/* Select interface B, otherwise communication will fail. */
ret = ftdi_set_interface(devc->ftdic, INTERFACE_B);
if (ret < 0) {
sr_err("Failed to set FTDI interface B (%d): %s", ret,
ftdi_get_error_string(devc->ftdic));
return SR_ERR;
}
sr_dbg("FTDI chip interface B set successfully.");
/* Check for the device and temporarily open it. */
ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID,
USB_IPRODUCT, NULL);
if (ret < 0) {
/* Log errors, except for -3 ("device not found"). */
if (ret != -3)
sr_err("Failed to open device (%d): %s", ret,
ftdi_get_error_string(devc->ftdic));
return SR_ERR;
}
sr_dbg("FTDI device opened successfully.");
/* Purge RX/TX buffers in the FTDI chip. */
if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) {
sr_err("Failed to purge FTDI RX/TX buffers (%d): %s.",
ret, ftdi_get_error_string(devc->ftdic));
goto err_open_close_ftdic;
}
sr_dbg("FTDI chip buffers purged successfully.");
/* Reset the FTDI bitmode. */
ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_RESET);
if (ret < 0) {
sr_err("Failed to reset the FTDI chip bitmode (%d): %s.",
ret, ftdi_get_error_string(devc->ftdic));
goto err_open_close_ftdic;
}
sr_dbg("FTDI chip bitmode reset successfully.");
/* Set the FTDI latency timer to 16. */
ret = ftdi_set_latency_timer(devc->ftdic, 16);
if (ret < 0) {
sr_err("Failed to set FTDI latency timer (%d): %s.",
ret, ftdi_get_error_string(devc->ftdic));
goto err_open_close_ftdic;
}
sr_dbg("FTDI chip latency timer set successfully.");
/* Set the FTDI read data chunk size to 64kB. */
ret = ftdi_read_data_set_chunksize(devc->ftdic, 64 * 1024);
if (ret < 0) {
sr_err("Failed to set FTDI read data chunk size (%d): %s.",
ret, ftdi_get_error_string(devc->ftdic));
goto err_open_close_ftdic;
}
sr_dbg("FTDI chip read data chunk size set successfully.");
return SR_OK;
err_open_close_ftdic:
ftdi_usb_close(devc->ftdic))
return SR_ERR;
}
SR_PRIV int p_ols_close(struct dev_context *devc)
{
int ret;
/* Note: Caller checks devc and devc->ftdic. */
if ((ret = ftdi_usb_close(devc->ftdic)) < 0) {
sr_err("Failed to close FTDI device (%d): %s.",
ret, ftdi_get_error_string(devc->ftdic));
return SR_ERR;
}
return SR_OK;
}
SR_PRIV int p_ols_configure_channels(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
const struct sr_channel *ch;
const GSList *l;
int channel_bit, stage, i;
char *tc;
devc = sdi->priv;
devc->channel_mask = 0;
for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
devc->trigger_mask[i] = 0;
devc->trigger_value[i] = 0;
}
devc->num_stages = 0;
for (l = sdi->channels; l; l = l->next) {
ch = (const struct sr_channel *)l->data;
if (!ch->enabled)
continue;
if (ch->index >= devc->max_channels) {
sr_err("Channels over the limit of %d\n", devc->max_channels);
return SR_ERR;
}
/*
* Set up the channel mask for later configuration into the
* flag register.
*/
channel_bit = 1 << (ch->index);
devc->channel_mask |= channel_bit;
if (!ch->trigger)
continue;
/* Configure trigger mask and value. */
stage = 0;
for (tc = ch->trigger; tc && *tc; tc++) {
devc->trigger_mask[stage] |= channel_bit;
if (*tc == '1')
devc->trigger_value[stage] |= channel_bit;
stage++;
/* Only supporting parallel mode, with up to 4 stages. */
if (stage > 3)
return SR_ERR;
}
if (stage > devc->num_stages)
devc->num_stages = stage - 1;
}
return SR_OK;
}
SR_PRIV struct sr_dev_inst *p_ols_get_metadata(uint8_t *buf, int bytes_read, struct dev_context *devc)
{
struct sr_dev_inst *sdi;
struct sr_channel *ch;
uint32_t tmp_int, ui;
uint8_t key, type, token;
GString *tmp_str, *devname, *version;
guchar tmp_c;
int index, i;
sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, NULL, NULL, NULL);
sdi->driver = di;
sdi->priv = devc;
devname = g_string_new("");
version = g_string_new("");
index = 0;
while (index < bytes_read) {
key = buf[index++];
if (key == 0x00) {
sr_dbg("Got metadata key 0x00, metadata ends.");
break;
}
type = key >> 5;
token = key & 0x1f;
switch (type) {
case 0:
/* NULL-terminated string */
tmp_str = g_string_new("");
while ((index < bytes_read) && ((tmp_c = buf[index++]) != '\0'))
g_string_append_c(tmp_str, tmp_c);
sr_dbg("Got metadata key 0x%.2x value '%s'.",
key, tmp_str->str);
switch (token) {
case 0x01:
/* Device name */
devname = g_string_append(devname, tmp_str->str);
break;
case 0x02:
/* FPGA firmware version */
if (version->len)
g_string_append(version, ", ");
g_string_append(version, "FPGA version ");
g_string_append(version, tmp_str->str);
break;
case 0x03:
/* Ancillary version */
if (version->len)
g_string_append(version, ", ");
g_string_append(version, "Ancillary version ");
g_string_append(version, tmp_str->str);
break;
default:
sr_info("Unknown token 0x%.2x: '%s'",
token, tmp_str->str);
break;
}
g_string_free(tmp_str, TRUE);
break;
case 1:
/* 32-bit unsigned integer */
tmp_int = 0;
for (i = 0; i < 4; i++) {
tmp_int = (tmp_int << 8) | buf[index++];
}
sr_dbg("Got metadata key 0x%.2x value 0x%.8x.",
key, tmp_int);
switch (token) {
case 0x00:
/* Number of usable channels */
for (ui = 0; ui < tmp_int; ui++) {
if (!(ch = sr_channel_new(ui, SR_CHANNEL_LOGIC, TRUE,
p_ols_channel_names[ui])))
return 0;
sdi->channels = g_slist_append(sdi->channels, ch);
}
break;
case 0x01:
/* Amount of sample memory available (bytes) */
devc->max_samples = tmp_int;
break;
case 0x02:
/* Amount of dynamic memory available (bytes) */
/* what is this for? */
break;
case 0x03:
/* Maximum sample rate (hz) */
devc->max_samplerate = tmp_int;
break;
case 0x04:
/* protocol version */
devc->protocol_version = tmp_int;
break;
default:
sr_info("Unknown token 0x%.2x: 0x%.8x.",
token, tmp_int);
break;
}
break;
case 2:
/* 8-bit unsigned integer */
tmp_c = buf[index++];
sr_dbg("Got metadata key 0x%.2x value 0x%.2x.",
key, tmp_c);
switch (token) {
case 0x00:
/* Number of usable channels */
for (ui = 0; ui < tmp_c; ui++) {
if (!(ch = sr_channel_new(ui, SR_CHANNEL_LOGIC, TRUE,
p_ols_channel_names[ui])))
return 0;
sdi->channels = g_slist_append(sdi->channels, ch);
}
break;
case 0x01:
/* protocol version */
devc->protocol_version = tmp_c;
break;
default:
sr_info("Unknown token 0x%.2x: 0x%.2x.",
token, tmp_c);
break;
}
break;
default:
/* unknown type */
break;
}
}
sdi->model = devname->str;
sdi->version = version->str;
g_string_free(devname, FALSE);
g_string_free(version, FALSE);
return sdi;
}
SR_PRIV int p_ols_set_samplerate(const struct sr_dev_inst *sdi,
const uint64_t samplerate)
{
struct dev_context *devc;
devc = sdi->priv;
if (devc->max_samplerate && samplerate > devc->max_samplerate)
return SR_ERR_SAMPLERATE;
if (samplerate > CLOCK_RATE) {
sr_info("Enabling demux mode.");
devc->flag_reg |= FLAG_DEMUX;
devc->flag_reg &= ~FLAG_FILTER;
devc->max_channels = NUM_CHANNELS / 2;
devc->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1;
} else {
sr_info("Disabling demux mode.");
devc->flag_reg &= ~FLAG_DEMUX;
devc->flag_reg |= FLAG_FILTER;
devc->max_channels = NUM_CHANNELS;
devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1;
}
/* Calculate actual samplerate used and complain if it is different
* from the requested.
*/
devc->cur_samplerate = CLOCK_RATE / (devc->cur_samplerate_divider + 1);
if (devc->flag_reg & FLAG_DEMUX)
devc->cur_samplerate *= 2;
if (devc->cur_samplerate != samplerate)
sr_info("Can't match samplerate %" PRIu64 ", using %"
PRIu64 ".", samplerate, devc->cur_samplerate);
return SR_OK;
}
SR_PRIV int p_ols_receive_data(int fd, int revents, void *cb_data)
{
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
uint32_t sample;
int num_channels, offset, j;
int bytes_read, index;
unsigned int i;
unsigned char byte;
(void)fd;
(void)revents;
sdi = cb_data;
devc = sdi->priv;
if (devc->num_transfers++ == 0) {
devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4);
if (!devc->raw_sample_buf) {
sr_err("Sample buffer malloc failed.");
return FALSE;
}
/* fill with 1010... for debugging */
memset(devc->raw_sample_buf, 0x82, devc->limit_samples * 4);
}
if (devc->num_samples < devc->limit_samples) {
num_channels = 0;
for (i = NUM_CHANNELS; i > 0x02; i /= 2) {
if ((devc->flag_reg & i) == 0) {
num_channels++;
}
}
/* Get a block of data. */
bytes_read = ftdi_read_data(devc->ftdic, devc->ftdi_buf, FTDI_BUF_SIZE);
if (bytes_read < 0) {
sr_err("Failed to read FTDI data (%d): %s.",
bytes_read, ftdi_get_error_string(devc->ftdic));
sdi->driver->dev_acquisition_stop(sdi, sdi);
return FALSE;
}
if (bytes_read == 0) {
sr_spew("Received 0 bytes, nothing to do.");
return TRUE;
}
sr_dbg("Received %d bytes", bytes_read);
index = 0;
while (index < bytes_read) {
byte = devc->ftdi_buf[index++];
devc->cnt_bytes++;
devc->sample[devc->num_bytes++] = byte;
sr_spew("Received byte 0x%.2x.", byte);
if (devc->num_bytes == num_channels) {
devc->cnt_samples++;
devc->cnt_samples_rle++;
/*
* Got a full sample. Convert from the OLS's little-endian
* sample to the local format.
*/
sample = devc->sample[0] | (devc->sample[1] << 8) \
| (devc->sample[2] << 16) | (devc->sample[3] << 24);
sr_spew("Received sample 0x%.*x.", devc->num_bytes * 2, sample);
if (devc->flag_reg & FLAG_RLE) {
/*
* In RLE mode the high bit of the sample is the
* "count" flag, meaning this sample is the number
* of times the previous sample occurred.
*/
if (devc->sample[devc->num_bytes - 1] & 0x80) {
/* Clear the high bit. */
sample &= ~(0x80 << (devc->num_bytes - 1) * 8);
devc->rle_count = sample;
devc->cnt_samples_rle += devc->rle_count;
sr_dbg("RLE count: %u.", devc->rle_count);
devc->num_bytes = 0;
continue;
}
}
devc->num_samples += devc->rle_count + 1;
if (devc->num_samples > devc->limit_samples) {
/* Save us from overrunning the buffer. */
devc->rle_count -= devc->num_samples - devc->limit_samples;
devc->num_samples = devc->limit_samples;
}
if (num_channels < 4) {
/*
* Some channel groups may have been turned
* off, to speed up transfer between the
* hardware and the PC. Expand that here before
* submitting it over the session bus --
* whatever is listening on the bus will be
* expecting a full 32-bit sample, based on
* the number of channels.
*/
j = 0;
memset(devc->tmp_sample, 0, 4);
for (i = 0; i < 4; i++) {
if (((devc->flag_reg >> 2) & (1 << i)) == 0) {
/*
* This channel group was
* enabled, copy from received
* sample.
*/
devc->tmp_sample[i] = devc->sample[j++];
} else if (devc->flag_reg & FLAG_DEMUX && (i > 2)) {
/* group 2 & 3 get added to 0 & 1 */
devc->tmp_sample[i - 2] = devc->sample[j++];
}
}
memcpy(devc->sample, devc->tmp_sample, 4);
sr_spew("Expanded sample: 0x%.8x.", sample);
}
/*
* Pipistrello OLS sends its sample buffer backwards.
* store it in reverse order here, so we can dump
* this on the session bus later.
*/
offset = (devc->limit_samples - devc->num_samples) * 4;
for (i = 0; i <= devc->rle_count; i++) {
memcpy(devc->raw_sample_buf + offset + (i * 4),
devc->sample, 4);
}
memset(devc->sample, 0, 4);
devc->num_bytes = 0;
devc->rle_count = 0;
}
}
return TRUE;
} else {
/*
* We've acquired all the samples we asked for -- we're done.
* Send the (properly-ordered) buffer to the frontend.
*/
sr_dbg("Received %d bytes, %d samples, %d decompressed samples.",
devc->cnt_bytes, devc->cnt_samples,
devc->cnt_samples_rle);
if (devc->trigger_at != -1) {
/*
* A trigger was set up, so we need to tell the frontend
* about it.
*/
if (devc->trigger_at > 0) {
/* There are pre-trigger samples, send those first. */
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
logic.length = devc->trigger_at * 4;
logic.unitsize = 4;
logic.data = devc->raw_sample_buf +
(devc->limit_samples - devc->num_samples) * 4;
sr_session_send(cb_data, &packet);
}
/* Send the trigger. */
packet.type = SR_DF_TRIGGER;
sr_session_send(cb_data, &packet);
/* Send post-trigger samples. */
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
logic.length = (devc->num_samples * 4) - (devc->trigger_at * 4);
logic.unitsize = 4;
logic.data = devc->raw_sample_buf + devc->trigger_at * 4 +
(devc->limit_samples - devc->num_samples) * 4;
sr_session_send(cb_data, &packet);
} else {
/* no trigger was used */
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
logic.length = devc->num_samples * 4;
logic.unitsize = 4;
logic.data = devc->raw_sample_buf +
(devc->limit_samples - devc->num_samples) * 4;
sr_session_send(cb_data, &packet);
}
g_free(devc->raw_sample_buf);
sdi->driver->dev_acquisition_stop(sdi, cb_data);
}
return TRUE;
}

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBSIGROK_HARDWARE_PIPISTRELLO_OLS_PROTOCOL_H
#define LIBSIGROK_HARDWARE_PIPISTRELLO_OLS_PROTOCOL_H
#include <stdint.h>
#include <string.h>
#include <glib.h>
#include <ftdi.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#define LOG_PREFIX "pipistrello_ols"
#define FTDI_BUF_SIZE (16 * 1024)
#define NUM_CHANNELS 32
#define NUM_TRIGGER_STAGES 4
#define TRIGGER_TYPE "01"
#define CLOCK_RATE SR_MHZ(100)
#define MIN_NUM_SAMPLES 4
#define DEFAULT_SAMPLERATE SR_MHZ(100)
/* Command opcodes */
#define CMD_RESET 0x00
#define CMD_RUN 0x01
#define CMD_TESTMODE 0x03
#define CMD_ID 0x02
#define CMD_METADATA 0x04
#define CMD_SET_DIVIDER 0x80
#define CMD_SET_FLAGS 0x82
#define CMD_CAPTURE_COUNT 0x83
#define CMD_CAPTURE_DELAY 0x84
#define CMD_SET_TRIGGER_MASK 0xc0
#define CMD_SET_TRIGGER_VALUE 0xc1
#define CMD_SET_TRIGGER_CONFIG 0xc2
/* Trigger config */
#define TRIGGER_START (1 << 3)
/* Bitmasks for CMD_FLAGS */
/* 12-13 unused, 14-15 RLE mode (we hardcode mode 0). */
#define FLAG_INTERNAL_TEST_MODE (1 << 11)
#define FLAG_EXTERNAL_TEST_MODE (1 << 10)
#define FLAG_SWAP_CHANNELS (1 << 9)
#define FLAG_RLE (1 << 8)
#define FLAG_SLOPE_FALLING (1 << 7)
#define FLAG_CLOCK_EXTERNAL (1 << 6)
#define FLAG_CHANNELGROUP_4 (1 << 5)
#define FLAG_CHANNELGROUP_3 (1 << 4)
#define FLAG_CHANNELGROUP_2 (1 << 3)
#define FLAG_CHANNELGROUP_1 (1 << 2)
#define FLAG_FILTER (1 << 1)
#define FLAG_DEMUX (1 << 0)
/* Private, per-device-instance driver context. */
struct dev_context {
/** FTDI device context (used by libftdi). */
struct ftdi_context *ftdic;
uint8_t *ftdi_buf;
/* Fixed device settings */
int max_channels;
uint32_t max_samples;
uint32_t max_samplerate;
uint32_t protocol_version;
/* Acquisition settings */
uint64_t cur_samplerate;
uint32_t cur_samplerate_divider;
uint64_t limit_samples;
int capture_ratio;
int trigger_at;
uint32_t channel_mask;
uint32_t trigger_mask[4];
uint32_t trigger_value[4];
int num_stages;
uint16_t flag_reg;
/* Operational states */
unsigned int num_transfers;
unsigned int num_samples;
int num_bytes;
int cnt_bytes;
int cnt_samples;
int cnt_samples_rle;
/* Temporary variables */
unsigned int rle_count;
unsigned char sample[4];
unsigned char tmp_sample[4];
unsigned char *raw_sample_buf;
};
SR_PRIV extern const char *p_ols_channel_names[NUM_CHANNELS + 1];
SR_PRIV int write_shortcommand(struct dev_context *devc, uint8_t command);
SR_PRIV int write_longcommand(struct dev_context *devc, uint8_t command, uint8_t *data);
SR_PRIV int p_ols_open(struct dev_context *devc);
SR_PRIV int p_ols_close(struct dev_context *devc);
SR_PRIV int p_ols_configure_channels(const struct sr_dev_inst *sdi);
SR_PRIV struct sr_dev_inst *p_ols_get_metadata(uint8_t *buf, int bytes_read, struct dev_context *devc);
SR_PRIV int p_ols_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate);
SR_PRIV int p_ols_receive_data(int fd, int revents, void *cb_data);
#endif