X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=src%2Fdevice.c;h=5a144d97ebccf3b160117b64f17c3be604e9367f;hp=dbbb2e26ac122e446f4c4c4efcf66e16260a5a2a;hb=a0418c20d8eebb4ed127b04256e1b7a1dc2bdc7e;hpb=fe71c7e42ea442d7706c7dab4d98c2c9f1658537 diff --git a/src/device.c b/src/device.c index dbbb2e26..5a144d97 100644 --- a/src/device.c +++ b/src/device.c @@ -18,10 +18,12 @@ */ #include -#include #include +#include +#include #include #include "libsigrok-internal.h" +#include "scpi.h" /** @cond PRIVATE */ #define LOG_PREFIX "device" @@ -60,7 +62,7 @@ SR_PRIV struct sr_channel *sr_channel_new(struct sr_dev_inst *sdi, { struct sr_channel *ch; - ch = g_malloc0(sizeof(struct sr_channel)); + ch = g_malloc0(sizeof(*ch)); ch->sdi = sdi; ch->index = index; ch->type = type; @@ -90,7 +92,9 @@ SR_PRIV void sr_channel_free(struct sr_channel *ch) } /** - * Wrapper around @ref sr_channel_free(), suitable for glib iterators. + * Wrapper around sr_channel_free(), suitable for glib iterators. + * + * @private */ SR_PRIV void sr_channel_free_cb(void *p) { @@ -188,6 +192,69 @@ SR_PRIV struct sr_channel *sr_next_enabled_channel(const struct sr_dev_inst *sdi return next_channel; } +/** + * Compare two channels, return whether they differ. + * + * The channels' names and types are checked. The enabled state is not + * considered a condition for difference. The test is motivated by the + * desire to detect changes in the configuration of acquisition setups + * between re-reads of an input file. + * + * @param[in] ch1 First channel. + * @param[in] ch2 Second channel. + * + * @return TRUE upon differences or unexpected input, FALSE otherwise. + * + * @private + */ +SR_PRIV gboolean sr_channels_differ(struct sr_channel *ch1, struct sr_channel *ch2) +{ + if (!ch1 || !ch2) + return TRUE; + + if (ch1->type != ch2->type) + return TRUE; + if (strcmp(ch1->name, ch2->name)) + return TRUE; + + return FALSE; +} + +/** + * Compare two channel lists, return whether they differ. + * + * Listing the same set of channels but in a different order is considered + * a difference in the lists. + * + * @param[in] l1 First channel list. + * @param[in] l2 Second channel list. + * + * @return TRUE upon differences or unexpected input, FALSE otherwise. + * + * @private + */ +SR_PRIV gboolean sr_channel_lists_differ(GSList *l1, GSList *l2) +{ + struct sr_channel *ch1, *ch2; + + while (l1 && l2) { + ch1 = l1->data; + ch2 = l2->data; + l1 = l1->next; + l2 = l2->next; + if (!ch1 || !ch2) + return TRUE; + if (sr_channels_differ(ch1, ch2)) + return TRUE; + if (ch1->index != ch2->index) + return TRUE; + } + if (l1 || l2) + return TRUE; + + return FALSE; +} + /** * Determine whether the specified device instance has the specified * capability. @@ -340,7 +407,7 @@ SR_API struct sr_dev_inst *sr_dev_inst_user_new(const char *vendor, { struct sr_dev_inst *sdi; - sdi = g_malloc0(sizeof(struct sr_dev_inst)); + sdi = g_malloc0(sizeof(*sdi)); sdi->vendor = g_strdup(vendor); sdi->model = g_strdup(model); @@ -353,6 +420,7 @@ SR_API struct sr_dev_inst *sr_dev_inst_user_new(const char *vendor, /** * Add a new channel to the specified device instance. * + * @param[in] sdi Device instance to use. Must not be NULL. * @param[in] index @copydoc sr_channel::index * @param[in] type @copydoc sr_channel::type * @param[in] name @copydoc sr_channel::name @@ -430,7 +498,7 @@ SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus, { struct sr_usb_dev_inst *udi; - udi = g_malloc0(sizeof(struct sr_usb_dev_inst)); + udi = g_malloc0(sizeof(*udi)); udi->bus = bus; udi->address = address; udi->devhdl = hdl; @@ -453,7 +521,7 @@ SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb) #endif -#ifdef HAVE_LIBSERIALPORT +#ifdef HAVE_SERIAL_COMM /** * Allocate and init a struct for a serial device instance. @@ -479,7 +547,7 @@ SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port, { struct sr_serial_dev_inst *serial; - serial = g_malloc0(sizeof(struct sr_serial_dev_inst)); + serial = g_malloc0(sizeof(*serial)); serial->port = g_strdup(port); if (serialcomm) serial->serialcomm = g_strdup(serialcomm); @@ -511,7 +579,7 @@ SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device) { struct sr_usbtmc_dev_inst *usbtmc; - usbtmc = g_malloc0(sizeof(struct sr_usbtmc_dev_inst)); + usbtmc = g_malloc0(sizeof(*usbtmc)); usbtmc->device = g_strdup(device); usbtmc->fd = -1; @@ -744,19 +812,24 @@ SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi) #ifdef HAVE_LIBUSB_1_0 struct drv_context *drvc; int cnt, i, a, b; - char connection_id[64]; + char conn_id_usb[64]; struct sr_usb_dev_inst *usb; struct libusb_device **devlist; #endif +#ifdef HAVE_SERIAL_COMM + struct sr_serial_dev_inst *serial; +#endif + + struct sr_scpi_dev_inst *scpi; + char *conn_id_scpi; + if (!sdi) return NULL; -#ifdef HAVE_LIBSERIALPORT - struct sr_serial_dev_inst *serial; - +#ifdef HAVE_SERIAL_COMM if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_SERIAL)) { - /* connection_id isn't populated, let's do that here. */ + /* connection_id isn't populated, let's do that for serial devices. */ serial = sdi->conn; ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(serial->port); @@ -765,7 +838,7 @@ SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi) #ifdef HAVE_LIBUSB_1_0 if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_USB)) { - /* connection_id isn't populated, let's do that here. */ + /* connection_id isn't populated, let's do that for USB devices. */ drvc = sdi->driver->context; usb = sdi->conn; @@ -783,10 +856,10 @@ SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi) if (b != usb->bus || a != usb->address) continue; - if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) + if (usb_get_port_path(devlist[i], conn_id_usb, sizeof(conn_id_usb)) < 0) continue; - ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(connection_id); + ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(conn_id_usb); break; } @@ -794,6 +867,15 @@ SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi) } #endif + if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_SCPI)) { + /* connection_id isn't populated, let's do that for SCPI devices. */ + + scpi = sdi->conn; + sr_scpi_connection_id(scpi, &conn_id_scpi); + ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(conn_id_scpi); + g_free(conn_id_scpi); + } + return sdi->connection_id; }