#include "config.h"
#include "sigrok.h"
-#define USB_VENDOR 0x0925
+#define USB_VENDOR 0x0925
#define USB_PRODUCT 0x3881
-#define USB_VENDOR_NAME "Saleae"
+#define USB_VENDOR_NAME "Saleae"
#define USB_MODEL_NAME "Logic"
#define USB_MODEL_VERSION ""
#define USB_INTERFACE 0
#define USB_CONFIGURATION 1
-#define NUM_PROBES 8
+#define NUM_PROBES 8
#define NUM_TRIGGER_STAGES 4
#define TRIGGER_TYPES "01"
-#define FIRMWARE FIRMWARE_DIR "/saleae-logic.firmware"
+#define FIRMWARE FIRMWARE_DIR "/saleae-logic.firmware"
/* delay in ms */
-#define FIRMWARE_RENUM_DELAY 2000
-#define NUM_SIMUL_TRANSFERS 10
-#define MAX_EMPTY_TRANSFERS NUM_SIMUL_TRANSFERS * 2
+#define FIRMWARE_RENUM_DELAY 2000
+#define NUM_SIMUL_TRANSFERS 10
+#define MAX_EMPTY_TRANSFERS (NUM_SIMUL_TRANSFERS * 2)
/* software trigger implementation: positive values indicate trigger stage */
#define TRIGGER_FIRED -1
-
-/* there is only one model Saleae Logic, and this is what it supports */
+/* There is only one model Saleae Logic, and this is what it supports: */
static int capabilities[] = {
HWCAP_LOGIC_ANALYZER,
HWCAP_SAMPLERATE,
- /* these are really implemented in the driver, not the hardware */
+ /* These are really implemented in the driver, not the hardware. */
HWCAP_LIMIT_SAMPLES,
- 0
+ 0,
};
-/* list of struct sigrok_device_instance, maintained by opendev() and closedev() */
+/* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */
static GSList *device_instances = NULL;
-/* since we can't keep track of a Saleae Logic device after upgrading the
+/*
+ * Since we can't keep track of a Saleae Logic device after upgrading the
* firmware -- it re-enumerates into a different device address after the
* upgrade -- this is like a global lock. No device will open until a proper
* delay after the last device was upgraded.
*/
-GTimeVal firmware_updated = {0};
+GTimeVal firmware_updated = { 0 };
static libusb_context *usb_context = NULL;
MHZ(12),
MHZ(16),
MHZ(24),
- 0
+ 0,
};
static struct samplerates samplerates = {
KHZ(200),
MHZ(24),
0,
- supported_samplerates
+ supported_samplerates,
};
-/* TODO: all of these should go in a device-specific struct */
+/* TODO: All of these should go in a device-specific struct. */
static uint64_t cur_samplerate = 0;
static uint64_t limit_samples = 0;
-static uint8_t probe_mask = 0, \
- trigger_mask[NUM_TRIGGER_STAGES] = {0}, \
- trigger_value[NUM_TRIGGER_STAGES] = {0}, \
- trigger_buffer[NUM_TRIGGER_STAGES] = {0};;
+static uint8_t probe_mask = 0;
+static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
+static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };
+static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };
int trigger_stage = TRIGGER_FIRED;
-
static int hw_set_configuration(int device_index, int capability, void *value);
-
/* returns 1 if the device's configuration profile match the Logic firmware's
* configuration, 0 otherwise
*/
int check_conf_profile(libusb_device *dev)
{
struct libusb_device_descriptor des;
- struct libusb_config_descriptor *conf_dsc;
+ struct libusb_config_descriptor *conf_dsc = NULL;
const struct libusb_interface_descriptor *intf_dsc;
- int ret;
+ int ret = -1;
- ret = -1;
- conf_dsc = NULL;
- while(ret == -1)
- {
- /* assume it's not a Saleae Logic unless proven wrong */
+ while (ret == -1) {
+ /* Assume it's not a Saleae Logic unless proven wrong. */
ret = 0;
- if(libusb_get_device_descriptor(dev, &des) != 0)
+ if (libusb_get_device_descriptor(dev, &des) != 0)
break;
- if(des.bNumConfigurations != 1)
- /* need exactly 1 configuration */
+ if (des.bNumConfigurations != 1)
+ /* Need exactly 1 configuration. */
break;
- if(libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
+ if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
break;
- if(conf_dsc->bNumInterfaces != 1)
- /* need exactly 1 interface */
+ if (conf_dsc->bNumInterfaces != 1)
+ /* Need exactly 1 interface. */
break;
- if(conf_dsc->interface[0].num_altsetting != 1)
- /* need just one alternate setting */
+ if (conf_dsc->interface[0].num_altsetting != 1)
+ /* Need just one alternate setting. */
break;
intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
- if(intf_dsc->bNumEndpoints != 2)
- /* need 2 endpoints */
+ if (intf_dsc->bNumEndpoints != 2)
+ /* Need 2 endpoints. */
break;
- if((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != (1 | LIBUSB_ENDPOINT_OUT))
- /* first endpoint should be 1 (outbound) */
+ if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
+ (1 | LIBUSB_ENDPOINT_OUT))
+ /* First endpoint should be 1 (outbound). */
break;
- if((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != (2 | LIBUSB_ENDPOINT_IN))
- /* first endpoint should be 2 (inbound) */
+ if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
+ (2 | LIBUSB_ENDPOINT_IN))
+ /* First endpoint should be 2 (inbound). */
break;
- /* if we made it here, it must be a Saleae Logic */
+ /* If we made it here, it must be a Saleae Logic. */
ret = 1;
}
- if(conf_dsc)
+
+ if (conf_dsc)
libusb_free_config_descriptor(conf_dsc);
return ret;
}
-
struct sigrok_device_instance *sl_open_device(int device_index)
{
struct sigrok_device_instance *sdi;
struct libusb_device_descriptor des;
int err, skip, i;
- if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
+ if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
return NULL;
libusb_get_device_list(usb_context, &devlist);
- if(sdi->status == ST_INITIALIZING)
- {
- /* this device was renumerating last time we touched it. opendev() guarantees we've
- * waited long enough for it to have booted properly, so now we need to find it on
+ if (sdi->status == ST_INITIALIZING) {
+ /*
+ * This device was renumerating last time we touched it.
+ * opendev() guarantees we've waited long enough for it to
+ * have booted properly, so now we need to find it on
* the bus and record its new address.
*/
skip = 0;
- for(i = 0; devlist[i]; i++)
- {
- if( (err = libusb_get_device_descriptor(devlist[i], &des)) )
- {
- g_warning("failed to get device descriptor: %d", err);
+ for (i = 0; devlist[i]; i++) {
+ if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
+ g_warning("failed to get device descriptor: %d",
+ err);
continue;
}
- if(des.idVendor == USB_VENDOR && des.idProduct == USB_PRODUCT)
- {
- if(skip != device_index)
- {
- /* skip past devices of this type that aren't the one we want */
+ if (des.idVendor == USB_VENDOR
+ && des.idProduct == USB_PRODUCT) {
+ if (skip != device_index) {
+ /*
+ * Skip past devices of this type that
+ * aren't the one we want.
+ */
skip++;
continue;
}
- /* should check the bus here, since we know that already... but what
- * are we going to do if it doesn't match after the right number of skips?
+ /*
+ * Should check the bus here, since we know
+ * that already... but what are we going to do
+ * if it doesn't match after the right number
+ * of skips?
*/
-
- if( !(err = libusb_open(devlist[i], &(sdi->usb->devhdl))) )
- {
- sdi->usb->address = libusb_get_device_address(devlist[i]);
+ if (!(err = libusb_open(devlist[i],
+ &(sdi->usb->devhdl)))) {
+ sdi->usb->address = libusb_get_device_address(devlist [i]);
sdi->status = ST_ACTIVE;
- g_message("opened device %d on %d.%d interface %d", sdi->index, sdi->usb->bus,
- sdi->usb->address, USB_INTERFACE);
- }
- else
- {
- g_warning("failed to open device: %d", err);
+ g_message("opened device %d on %d.%d "
+ "interface %d",
+ sdi->index, sdi->usb->bus,
+ sdi->usb->address, USB_INTERFACE);
+ } else {
+ g_warning("failed to open device: %d",
+ err);
sdi = NULL;
}
}
}
- }
- else if(sdi->status == ST_INACTIVE)
- {
- /* this device is fully enumerated, so we need to find this device by
- * vendor, product, bus and address */
+ } else if (sdi->status == ST_INACTIVE) {
+ /*
+ * This device is fully enumerated, so we need to find this
+ * device by vendor, product, bus and address.
+ */
libusb_get_device_list(usb_context, &devlist);
- for(i = 0; devlist[i]; i++)
- {
- if( (err = libusb_get_device_descriptor(devlist[i], &des)) )
- {
- g_warning("failed to get device descriptor: %d", err);
+ for (i = 0; devlist[i]; i++) {
+ if ((err =
+ libusb_get_device_descriptor(devlist[i], &des))) {
+ g_warning("failed to get device descriptor: %d",
+ err);
continue;
}
- if(des.idVendor == USB_VENDOR && des.idProduct == USB_PRODUCT)
- {
- if(libusb_get_bus_number(devlist[i]) == sdi->usb->bus &&
- libusb_get_device_address(devlist[i]) == sdi->usb->address)
- {
- /* found it */
- if( !(err = libusb_open(devlist[i], &(sdi->usb->devhdl))) )
- {
+ if (des.idVendor == USB_VENDOR
+ && des.idProduct == USB_PRODUCT) {
+ if (libusb_get_bus_number(devlist[i]) ==
+ sdi->usb->bus
+ && libusb_get_device_address(devlist[i]) ==
+ sdi->usb->address) {
+ /* Found it. */
+ if (!(err = libusb_open(devlist[i],
+ &(sdi->usb->devhdl)))) {
sdi->status = ST_ACTIVE;
- g_message("opened device %d on %d.%d interface %d", sdi->index, sdi->usb->bus,
- sdi->usb->address, USB_INTERFACE);
- }
- else
- {
+ g_message("opened device %d on "
+ "%d.%d interface %d",
+ sdi->index, sdi->usb->bus,
+ sdi->usb->address,
+ USB_INTERFACE);
+ } else {
g_warning("failed to open device: %d", err);
sdi = NULL;
}
}
}
}
- }
- else
- {
- /* status must be ST_ACTIVE, i.e. already in use... */
+ } else {
+ /* Status must be ST_ACTIVE, i.e. already in use... */
sdi = NULL;
}
libusb_free_device_list(devlist, 1);
- if(sdi && sdi->status != ST_ACTIVE)
+ if (sdi && sdi->status != ST_ACTIVE)
sdi = NULL;
return sdi;
}
-
int upload_firmware(libusb_device *dev)
{
struct libusb_device_handle *hdl;
int err;
g_message("uploading firmware to device on %d.%d",
- libusb_get_bus_number(dev), libusb_get_device_address(dev));
+ libusb_get_bus_number(dev), libusb_get_device_address(dev));
err = libusb_open(dev, &hdl);
- if(err != 0)
- {
+ if (err != 0) {
g_warning("failed to open device: %d", err);
return 1;
}
err = libusb_set_configuration(hdl, USB_CONFIGURATION);
- if(err != 0)
- {
+ if (err != 0) {
g_warning("Unable to set configuration: %d", err);
return 1;
}
- if((ezusb_reset(hdl, 1)) < 0)
+ if ((ezusb_reset(hdl, 1)) < 0)
return 1;
- if(ezusb_install_firmware(hdl, FIRMWARE) != 0)
+ if (ezusb_install_firmware(hdl, FIRMWARE) != 0)
return 1;
- if((ezusb_reset(hdl, 0)) < 0)
+ if ((ezusb_reset(hdl, 0)) < 0)
return 1;
libusb_close(hdl);
- /* remember when the last firmware update was done */
+ /* Remember when the last firmware update was done. */
g_get_current_time(&firmware_updated);
return 0;
}
-
static void close_device(struct sigrok_device_instance *sdi)
{
-
- if(sdi->usb->devhdl)
- {
- g_message("closing device %d on %d.%d interface %d", sdi->index, sdi->usb->bus,
- sdi->usb->address, USB_INTERFACE);
+ if (sdi->usb->devhdl) {
+ g_message("closing device %d on %d.%d interface %d", sdi->index,
+ sdi->usb->bus, sdi->usb->address, USB_INTERFACE);
libusb_release_interface(sdi->usb->devhdl, USB_INTERFACE);
libusb_close(sdi->usb->devhdl);
sdi->usb->devhdl = NULL;
sdi->status = ST_INACTIVE;
}
-
}
-
-static int configure_probes(GSList *probes)
+static int configure_probes(GSList * probes)
{
struct probe *probe;
GSList *l;
char *tc;
probe_mask = 0;
- for(i = 0; i < NUM_TRIGGER_STAGES; i++)
- {
+ for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
trigger_mask[i] = 0;
trigger_value[i] = 0;
}
stage = -1;
- for(l = probes; l; l = l->next)
- {
- probe = (struct probe *) l->data;
- if(probe->enabled == FALSE)
+ for (l = probes; l; l = l->next) {
+ probe = (struct probe *)l->data;
+ if (probe->enabled == FALSE)
continue;
probe_bit = 1 << (probe->index - 1);
probe_mask |= probe_bit;
- if(probe->trigger)
- {
+ if (probe->trigger) {
stage = 0;
- for(tc = probe->trigger; *tc; tc++)
- {
+ for (tc = probe->trigger; *tc; tc++) {
trigger_mask[stage] |= probe_bit;
- if(*tc == '1')
+ if (*tc == '1')
trigger_value[stage] |= probe_bit;
stage++;
- if(stage > NUM_TRIGGER_STAGES)
+ if (stage > NUM_TRIGGER_STAGES)
return SIGROK_ERR;
}
}
}
- if(stage == -1)
- /* we didn't configure any triggers, make sure acquisition doesn't wait for any */
+ if (stage == -1)
+ /*
+ * We didn't configure any triggers, make sure acquisition
+ * doesn't wait for any.
+ */
trigger_stage = TRIGGER_FIRED;
else
trigger_stage = 0;
return SIGROK_OK;
}
-
-
/*
* API callbacks
*/
libusb_device **devlist;
int err, devcnt, i;
- if(libusb_init(&usb_context) != 0) {
+ if (libusb_init(&usb_context) != 0) {
g_warning("Failed to initialize USB.");
return 0;
}
libusb_set_debug(usb_context, 3);
- /* find all Saleae Logic devices and upload firmware to all of them */
+ /* Find all Saleae Logic devices and upload firmware to all of them. */
devcnt = 0;
libusb_get_device_list(usb_context, &devlist);
- for(i = 0; devlist[i]; i++) {
+ for (i = 0; devlist[i]; i++) {
err = libusb_get_device_descriptor(devlist[i], &des);
- if(err != 0) {
+ if (err != 0) {
g_warning("failed to get device descriptor: %d", err);
continue;
}
- if(des.idVendor == USB_VENDOR && des.idProduct == USB_PRODUCT) {
- /* definitely a Saleae Logic */
+ if (des.idVendor == USB_VENDOR && des.idProduct == USB_PRODUCT) {
+ /* Definitely a Saleae Logic... */
- sdi = sigrok_device_instance_new(devcnt, ST_INITIALIZING,
- USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION);
- if(!sdi)
+ sdi = sigrok_device_instance_new(devcnt,
+ ST_INITIALIZING, USB_VENDOR_NAME,
+ USB_MODEL_NAME, USB_MODEL_VERSION);
+ if (!sdi)
return 0;
- device_instances = g_slist_append(device_instances, sdi);
-
- if(check_conf_profile(devlist[i]) == 0)
- {
- if(upload_firmware(devlist[i]) > 0)
- /* continue on the off chance that the device is in a working state */
- /* TODO: could maybe try a USB reset, or uploading the firmware again... */
+ device_instances =
+ g_slist_append(device_instances, sdi);
+
+ if (check_conf_profile(devlist[i]) == 0) {
+ if (upload_firmware(devlist[i]) > 0)
+ /*
+ * Continue on the off chance that the
+ * device is in a working state.
+ * TODO: Could maybe try a USB reset,
+ * or uploading the firmware again.
+ */
g_warning("firmware upload failed for device %d", devcnt);
- sdi->usb = usb_device_instance_new(libusb_get_bus_number(devlist[i]), 0, NULL);
- }
- else {
- /* already has the firmware on it, so fix the new address */
- sdi->usb = usb_device_instance_new(libusb_get_bus_number(devlist[i]),
- libusb_get_device_address(devlist[i]), NULL);
+ sdi->usb = usb_device_instance_new
+ (libusb_get_bus_number(devlist[i]), 0, NULL);
+ } else {
+ /*
+ * Already has the firmware on it, so fix the
+ * new address.
+ */
+ sdi->usb = usb_device_instance_new
+ (libusb_get_bus_number(devlist[i]),
+ libusb_get_device_address(devlist[i]),
+ NULL);
}
devcnt++;
}
return devcnt;
}
-
static int hw_opendev(int device_index)
{
GTimeVal cur_time;
int timediff, err;
unsigned int cur, upd;
- if(firmware_updated.tv_sec > 0) {
- /* firmware was recently uploaded */
+ if (firmware_updated.tv_sec > 0) {
+ /* Firmware was recently uploaded. */
g_get_current_time(&cur_time);
cur = cur_time.tv_sec * 1000 + cur_time.tv_usec / 1000;
- upd = firmware_updated.tv_sec * 1000 + firmware_updated.tv_usec / 1000;
+ upd = firmware_updated.tv_sec * 1000 +
+ firmware_updated.tv_usec / 1000;
timediff = cur - upd;
- if(timediff < FIRMWARE_RENUM_DELAY) {
+ if (timediff < FIRMWARE_RENUM_DELAY) {
timediff = FIRMWARE_RENUM_DELAY - timediff;
- g_message("waiting %d ms for device to reset", timediff);
+ g_message("waiting %d ms for device to reset",
+ timediff);
g_usleep(timediff * 1000);
firmware_updated.tv_sec = 0;
}
}
- if( !(sdi = sl_open_device(device_index)) ) {
+ if (!(sdi = sl_open_device(device_index))) {
g_warning("unable to open device");
return SIGROK_ERR;
}
err = libusb_claim_interface(sdi->usb->devhdl, USB_INTERFACE);
- if(err != 0) {
+ if (err != 0) {
g_warning("Unable to claim interface: %d", err);
return SIGROK_ERR;
}
- if(cur_samplerate == 0) {
- /* sample rate hasn't been set; default to the slowest it has */
- if(hw_set_configuration(device_index, HWCAP_SAMPLERATE, &supported_samplerates[0]) == SIGROK_ERR)
+ if (cur_samplerate == 0) {
+ /* Samplerate hasn't been set; default to the slowest one. */
+ if (hw_set_configuration(device_index, HWCAP_SAMPLERATE,
+ &supported_samplerates[0]) == SIGROK_ERR)
return SIGROK_ERR;
}
return SIGROK_OK;
}
-
static void hw_closedev(int device_index)
{
struct sigrok_device_instance *sdi;
- if( (sdi = get_sigrok_device_instance(device_instances, device_index)) )
+ if ((sdi = get_sigrok_device_instance(device_instances, device_index)))
close_device(sdi);
-
}
-
static void hw_cleanup(void)
{
GSList *l;
- /* properly close all devices */
- for(l = device_instances; l; l = l->next)
- close_device( (struct sigrok_device_instance *) l->data);
+ /* Properly close all devices... */
+ for (l = device_instances; l; l = l->next)
+ close_device((struct sigrok_device_instance *)l->data);
- /* and free all their memory */
- for(l = device_instances; l; l = l->next)
+ /* ...and free all their memory. */
+ for (l = device_instances; l; l = l->next)
g_free(l->data);
g_slist_free(device_instances);
device_instances = NULL;
- if(usb_context)
+ if (usb_context)
libusb_exit(usb_context);
usb_context = NULL;
-
}
-
static void *hw_get_device_info(int device_index, int device_info_id)
{
struct sigrok_device_instance *sdi;
- void *info;
+ void *info = NULL;
- if( !(sdi = get_sigrok_device_instance(device_instances, device_index)) )
+ if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
return NULL;
- info = NULL;
- switch(device_info_id)
- {
+ switch (device_info_id) {
case DI_INSTANCE:
info = sdi;
break;
return info;
}
-
static int hw_get_status(int device_index)
{
struct sigrok_device_instance *sdi;
sdi = get_sigrok_device_instance(device_instances, device_index);
- if(sdi)
+ if (sdi)
return sdi->status;
else
return ST_NOT_FOUND;
}
-
static int *hw_get_capabilities(void)
{
-
return capabilities;
}
-
-static int set_configuration_samplerate(struct sigrok_device_instance *sdi, uint64_t samplerate)
+static int set_configuration_samplerate(struct sigrok_device_instance *sdi,
+ uint64_t samplerate)
{
uint8_t divider;
int ret, result, i;
unsigned char buf[2];
- for(i = 0; supported_samplerates[i]; i++) {
- if(supported_samplerates[i] == samplerate)
+ for (i = 0; supported_samplerates[i]; i++) {
+ if (supported_samplerates[i] == samplerate)
break;
}
- if(supported_samplerates[i] == 0)
+ if (supported_samplerates[i] == 0)
return SIGROK_ERR_SAMPLERATE;
- divider = (uint8_t) (48 / (float) (samplerate/1000000)) - 1;
+ divider = (uint8_t) (48 / (float)(samplerate / 1000000)) - 1;
- g_message("setting samplerate to %"PRIu64" Hz (divider %d)", samplerate, divider);
+ g_message("setting samplerate to %" PRIu64 " Hz (divider %d)",
+ samplerate, divider);
buf[0] = 0x01;
buf[1] = divider;
- ret = libusb_bulk_transfer(sdi->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT, buf, 2, &result, 500);
- if(ret != 0) {
+ ret = libusb_bulk_transfer(sdi->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT,
+ buf, 2, &result, 500);
+ if (ret != 0) {
g_warning("failed to set samplerate: %d", ret);
return SIGROK_ERR;
}
return SIGROK_OK;
}
-
static int hw_set_configuration(int device_index, int capability, void *value)
{
struct sigrok_device_instance *sdi;
int ret;
uint64_t *tmp_u64;
- if( !(sdi = get_sigrok_device_instance(device_instances, device_index)) )
+ if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
return SIGROK_ERR;
- if(capability == HWCAP_SAMPLERATE) {
+ if (capability == HWCAP_SAMPLERATE) {
tmp_u64 = value;
ret = set_configuration_samplerate(sdi, *tmp_u64);
- }
- else if(capability == HWCAP_PROBECONFIG)
- ret = configure_probes( (GSList *) value);
- else if(capability == HWCAP_LIMIT_SAMPLES) {
+ } else if (capability == HWCAP_PROBECONFIG) {
+ ret = configure_probes((GSList *) value);
+ } else if (capability == HWCAP_LIMIT_SAMPLES) {
limit_samples = strtoull(value, NULL, 10);
ret = SIGROK_OK;
- }
- else
+ } else {
ret = SIGROK_ERR;
+ }
return ret;
}
-
static int receive_data(int fd, int revents, void *user_data)
{
struct timeval tv;
return TRUE;
}
-
void receive_transfer(struct libusb_transfer *transfer)
{
static int num_samples = 0;
static int empty_transfer_count = 0;
-
struct datafeed_packet packet;
void *user_data;
int cur_buflen, trigger_offset, i;
unsigned char *cur_buf, *new_buf;
- if(transfer == NULL) {
- /* hw_stop_acquisition() telling us to stop */
+ if (transfer == NULL) {
+ /* hw_stop_acquisition() is telling us to stop. */
num_samples = -1;
}
- if(num_samples == -1) {
- /* acquisition has already ended, just free any queued up transfer that come in */
+ if (num_samples == -1) {
+ /*
+ * Acquisition has already ended, just free any queued up
+ * transfer that come in.
+ */
libusb_free_transfer(transfer);
- }
- else {
- g_message("receive_transfer(): status %d received %d bytes", transfer->status, transfer->actual_length);
+ } else {
+ g_message("receive_transfer(): status %d received %d bytes",
+ transfer->status, transfer->actual_length);
- /* save the incoming transfer before reusing the transfer struct */
+ /* Save incoming transfer before reusing the transfer struct. */
cur_buf = transfer->buffer;
cur_buflen = transfer->actual_length;
user_data = transfer->user_data;
- /* fire off a new request */
+ /* Fire off a new request. */
new_buf = g_malloc(4096);
transfer->buffer = new_buf;
transfer->length = 4096;
- if(libusb_submit_transfer(transfer) != 0) {
- /* TODO: stop session? */
+ if (libusb_submit_transfer(transfer) != 0) {
+ /* TODO: Stop session? */
g_warning("eek");
}
- if(cur_buflen == 0) {
+ if (cur_buflen == 0) {
empty_transfer_count++;
- if(empty_transfer_count > MAX_EMPTY_TRANSFERS) {
- /* the FX2 gave up... end the acquisition, the frontend will work
- * out that the samplecount is short
+ if (empty_transfer_count > MAX_EMPTY_TRANSFERS) {
+ /* The FX2 gave up. End the acquisition, the
+ * frontend will work out that the samplecount
+ * is short.
*/
packet.type = DF_END;
session_bus(user_data, &packet);
num_samples = -1;
}
return;
- }
- else
+ } else {
empty_transfer_count = 0;
+ }
trigger_offset = 0;
- if(trigger_stage >= 0)
- {
- for(i = 0; i < cur_buflen; i++)
- {
- if((cur_buf[i] & trigger_mask[trigger_stage]) == trigger_value[trigger_stage])
- {
- /* match on this trigger stage */
- trigger_buffer[trigger_stage] = cur_buf[i];
+ if (trigger_stage >= 0) {
+ for (i = 0; i < cur_buflen; i++) {
+ if ((cur_buf[i] & trigger_mask[trigger_stage])
+ == trigger_value[trigger_stage]) {
+ /* Match on this trigger stage. */
+ trigger_buffer[trigger_stage] =
+ cur_buf[i];
trigger_stage++;
- if(trigger_stage == NUM_TRIGGER_STAGES || trigger_mask[trigger_stage] == 0)
- {
- /* match on all trigger stages, we're done */
- trigger_offset = i+1;
+ if (trigger_stage == NUM_TRIGGER_STAGES
+ || trigger_mask[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 */
+ /* TODO: Send pre-trigger buffer to session bus. Tell the frontend we hit the trigger here. */
packet.type = DF_TRIGGER;
packet.length = 0;
session_bus(user_data, &packet);
- /* send the samples that triggered it, since we're skipping past them */
+ /* Send the samples that triggered it, since we're skipping past them. */
packet.type = DF_LOGIC8;
packet.length = trigger_stage;
packet.payload = trigger_buffer;
trigger_stage = TRIGGER_FIRED;
}
- }
- else if(trigger_stage > 0)
- {
- /* we had a match before, but not in the next sample. however, we may
+ } else if (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 -= trigger_stage;
- if(i < -1)
- /* oops, went back past this buffer */
+ if (i < -1)
+ /* Oops, went back past this buffer. */
i = -1;
- /* reset trigger stage */
+ /* Reset trigger stage. */
trigger_stage = 0;
}
}
}
- if(trigger_stage == TRIGGER_FIRED)
- {
- /* send the incoming transfer to the session bus */
+ if (trigger_stage == TRIGGER_FIRED) {
+ /* Send the incoming transfer to the session bus. */
packet.type = DF_LOGIC8;
packet.length = cur_buflen - trigger_offset;
packet.payload = cur_buf + trigger_offset;
g_free(cur_buf);
num_samples += cur_buflen;
- if(num_samples > limit_samples)
- {
- /* end the acquisition */
+ if (num_samples > limit_samples) {
+ /* End the acquisition. */
packet.type = DF_END;
session_bus(user_data, &packet);
num_samples = -1;
}
- }
- else
- {
- /* TODO: buffer pre-trigger data in capture ratio-sized buffer */
-
+ } else {
+ /*
+ * TODO: Buffer pre-trigger data in capture
+ * ratio-sized buffer.
+ */
}
}
-
}
-
static int hw_start_acquisition(int device_index, gpointer session_device_id)
{
struct sigrok_device_instance *sdi;
int size, i;
unsigned char *buf;
- if( !(sdi = get_sigrok_device_instance(device_instances, device_index)))
+ if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
return SIGROK_ERR;
packet = g_malloc(sizeof(struct datafeed_packet));
header = g_malloc(sizeof(struct datafeed_header));
- if(!packet || !header)
+ if (!packet || !header)
return SIGROK_ERR;
- /* start with 2K transfer, subsequently increased to 4K */
+ /* Start with 2K transfer, subsequently increased to 4K. */
size = 2048;
- for(i = 0; i < NUM_SIMUL_TRANSFERS; i++) {
+ for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) {
buf = g_malloc(size);
transfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(transfer, sdi->usb->devhdl, 2 | LIBUSB_ENDPOINT_IN, buf, size,
+ libusb_fill_bulk_transfer(transfer, sdi->usb->devhdl,
+ 2 | LIBUSB_ENDPOINT_IN, buf, size,
receive_transfer, session_device_id, 40);
- if(libusb_submit_transfer(transfer) != 0) {
- /* TODO: free them all */
+ if (libusb_submit_transfer(transfer) != 0) {
+ /* TODO: Free them all. */
libusb_free_transfer(transfer);
g_free(buf);
return SIGROK_ERR;
}
lupfd = libusb_get_pollfds(usb_context);
- for(i = 0; lupfd[i]; i++)
- source_add(lupfd[i]->fd, lupfd[i]->events, -1, receive_data, NULL);
+ for (i = 0; lupfd[i]; i++)
+ source_add(lupfd[i]->fd, lupfd[i]->events, -1, receive_data,
+ NULL);
free(lupfd);
packet->type = DF_HEADER;
packet->length = sizeof(struct datafeed_header);
- packet->payload = (unsigned char *) header;
+ packet->payload = (unsigned char *)header;
header->feed_version = 1;
gettimeofday(&header->starttime, NULL);
header->samplerate = cur_samplerate;
return SIGROK_OK;
}
-
-/* this stops acquisition on ALL devices, ignoring device_index */
+/* This stops acquisition on ALL devices, ignoring device_index. */
static void hw_stop_acquisition(int device_index, gpointer session_device_id)
{
struct datafeed_packet packet;
receive_transfer(NULL);
- /* TODO: need to cancel and free any queued up transfers */
-
+ /* TODO: Need to cancel and free any queued up transfers. */
}
-
-
struct device_plugin saleae_logic_plugin_info = {
"saleae-logic",
1,
hw_get_capabilities,
hw_set_configuration,
hw_start_acquisition,
- hw_stop_acquisition
+ hw_stop_acquisition,
};
-
projects / libsigrok.git / commitdiff