Ejemplo n.º 1
0
static int hw_dev_open(int dev_index)
{
	struct sr_dev_inst *sdi;
	struct context *ctx;
	int ret;

	if (!(sdi = zp_open_dev(dev_index))) {
		sr_err("zp: unable to open device");
		return SR_ERR;
	}

	/* TODO: Note: sdi is retrieved in zp_open_dev(). */

	if (!(ctx = sdi->priv)) {
		sr_err("zp: %s: sdi->priv was NULL", __func__);
		return SR_ERR_ARG;
	}

	ret = libusb_set_configuration(ctx->usb->devhdl, USB_CONFIGURATION);
	if (ret < 0) {
		sr_err("zp: Unable to set USB configuration %d: %d",
		       USB_CONFIGURATION, ret);
		return SR_ERR;
	}

	ret = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
	if (ret != 0) {
		sr_err("zp: Unable to claim interface: %d", ret);
		return SR_ERR;
	}

	analyzer_reset(ctx->usb->devhdl);
	analyzer_initialize(ctx->usb->devhdl);

	analyzer_set_memory_size(MEMORY_SIZE_512K);
	// analyzer_set_freq(g_freq, g_freq_scale);
	analyzer_set_trigger_count(1);
	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	// * get_memory_size(g_memory_size)) / 100) >> 2);
	analyzer_set_ramsize_trigger_address(
		(100 * get_memory_size(MEMORY_SIZE_512K) / 100) >> 2);

#if 0
	if (g_double_mode == 1)
		analyzer_set_compression(COMPRESSION_DOUBLE);
	else if (g_compression == 1)
		analyzer_set_compression(COMPRESSION_ENABLE);
	else
#endif
	analyzer_set_compression(COMPRESSION_NONE);

	if (ctx->cur_samplerate == 0) {
		/* Samplerate hasn't been set. Default to the slowest one. */
		if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE,
		     &samplerates.list[0]) == SR_ERR)
			return SR_ERR;
	}

	return SR_OK;
}
Ejemplo n.º 2
0
static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;
	libusb_device **devlist, *dev;
	struct libusb_device_descriptor des;
	int device_count, ret, i;

	drvc = di->priv;
	usb = sdi->conn;

	if (!(devc = sdi->priv)) {
		sr_err("%s: sdi->priv was NULL", __func__);
		return SR_ERR_ARG;
	}

	device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
					      &devlist);
	if (device_count < 0) {
		sr_err("Failed to retrieve device list.");
		return SR_ERR;
	}

	dev = NULL;
	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 (libusb_get_bus_number(devlist[i]) == usb->bus
		    && libusb_get_device_address(devlist[i]) == usb->address) {
			dev = devlist[i];
			break;
		}
	}
	if (!dev) {
		sr_err("Device on bus %d address %d disappeared!",
		       usb->bus, usb->address);
		return SR_ERR;
	}

	if (!(ret = libusb_open(dev, &(usb->devhdl)))) {
		sdi->status = SR_ST_ACTIVE;
		sr_info("Opened device %d on %d.%d interface %d.",
			sdi->index, usb->bus, usb->address, USB_INTERFACE);
	} else {
		sr_err("Failed to open device: %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION);
	if (ret < 0) {
		sr_err("Unable to set USB configuration %d: %s.",
		       USB_CONFIGURATION, libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	if (ret != 0) {
		sr_err("Unable to claim interface: %s.",
		       libusb_error_name(ret));
		return SR_ERR;
	}

	/* Set default configuration after power on. */
	if (analyzer_read_status(usb->devhdl) == 0)
		analyzer_configure(usb->devhdl);

	analyzer_reset(usb->devhdl);
	analyzer_initialize(usb->devhdl);

	//analyzer_set_memory_size(MEMORY_SIZE_512K);
	// analyzer_set_freq(g_freq, g_freq_scale);
	analyzer_set_trigger_count(1);
	// analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
	// * get_memory_size(g_memory_size)) / 100) >> 2);

#if 0
	if (g_double_mode == 1)
		analyzer_set_compression(COMPRESSION_DOUBLE);
	else if (g_compression == 1)
		analyzer_set_compression(COMPRESSION_ENABLE);
	else
#endif
	analyzer_set_compression(COMPRESSION_NONE);

	if (devc->cur_samplerate == 0) {
		/* Samplerate hasn't been set. Default to 1MHz. */
		analyzer_set_freq(1, FREQ_SCALE_MHZ);
		devc->cur_samplerate = SR_MHZ(1);
	}

	if (devc->cur_threshold == 0)
		set_voltage_threshold(devc, 1.5);

	return SR_OK;
}