/*
- Copyright (c) 2010 Sven Peter <sven@fail0verflow.com>
- Copyright (c) 2010 Haxx Enterprises <bushing@gmail.com>
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or
- without modification, are permitted provided that the following
- conditions are met:
-
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- THE POSSIBILITY OF SUCH DAMAGE.
-
-*/
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2010 Sven Peter <sven@fail0verflow.com>
+ * Copyright (C) 2010 Haxx Enterprises <bushing@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include <libusb.h>
#include <stdio.h>
#include "gl_usb.h"
-#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN | LIBUSB_RECIPIENT_INTERFACE)
-#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT | LIBUSB_RECIPIENT_INTERFACE)
-const int PACKET_CTRL_LEN=2;
-
-const int PACKET_INT_LEN=2;
-const int PACKET_BULK_LEN=64;
-const int INTERFACE=0;
-const int ENDPOINT_INT_IN=0x81; /* endpoint 0x81 address for IN */
-const int ENDPOINT_INT_OUT=0x01; /* endpoint 1 address for OUT */
-const int ENDPOINT_BULK_IN=0x81; /* endpoint 0x81 address for IN */
-const int ENDPOINT_BULK_OUT=0x02; /* endpoint 1 address for OUT */
-const int TIMEOUT=5000; /* timeout in ms */
+#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN | \
+ LIBUSB_RECIPIENT_INTERFACE)
+#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT | \
+ LIBUSB_RECIPIENT_INTERFACE)
+
+const int PACKET_CTRL_LEN = 2;
+const int PACKET_INT_LEN = 2;
+const int PACKET_BULK_LEN = 64;
+const int INTERFACE = 0;
+const int ENDPOINT_INT_IN = 0x81; /* Endpoint 0x81 address for IN */
+const int ENDPOINT_INT_OUT = 0x01; /* Endpoint 1 address for OUT */
+const int ENDPOINT_BULK_IN = 0x81; /* Endpoint 0x81 address for IN */
+const int ENDPOINT_BULK_OUT = 0x02; /* Endpoint 1 address for OUT */
+const int TIMEOUT = 5000; /* Timeout in ms */
enum {
REQ_READBULK = 0x82,
int gl_write_address(libusb_device_handle *devh, unsigned int address)
{
- unsigned char packet[8] = {address & 0xFF};
- int retval = libusb_control_transfer(devh, CTRL_OUT, 0xc, REQ_WRITEADDR, 0, packet, 1,TIMEOUT);
- if (retval != 1) printf("%s: libusb_control_transfer returned %d\n", __FUNCTION__, retval);
- return retval;
+ unsigned char packet[8] = { address & 0xFF };
+ int ret;
+
+ ret = libusb_control_transfer(devh, CTRL_OUT, 0xc, REQ_WRITEADDR,
+ 0, packet, 1, TIMEOUT);
+ if (ret != 1)
+ printf("%s: libusb_control_transfer returned %d\n",
+ __FUNCTION__, ret);
+ return ret;
}
int gl_write_data(libusb_device_handle *devh, unsigned int val)
{
- unsigned char packet[8] = {val & 0xFF};
- int retval = libusb_control_transfer(devh, CTRL_OUT, 0xc, REQ_WRITEDATA, 0, packet, 1,TIMEOUT);
- if (retval != 1) printf("%s: libusb_control_transfer returned %d\n", __FUNCTION__, retval);
- return retval;
+ unsigned char packet[8] = { val & 0xFF };
+ int ret;
+
+ ret = libusb_control_transfer(devh, CTRL_OUT, 0xc, REQ_WRITEDATA,
+ 0, packet, 1, TIMEOUT);
+ if (ret != 1)
+ printf("%s: libusb_control_transfer returned %d\n",
+ __FUNCTION__, ret);
+ return ret;
}
int gl_read_data(libusb_device_handle *devh)
{
- unsigned char packet[8] = {0};
- int retval = libusb_control_transfer(devh, CTRL_IN, 0xc, REQ_READDATA, 0, packet, 1,TIMEOUT);
- if (retval != 1) printf("%s: libusb_control_transfer returned %d, val=%hhx\n", __FUNCTION__, retval, packet[0]);
- return retval == 1 ? packet[0] : retval;
+ unsigned char packet[8] = { 0 };
+ int ret;
+
+ ret = libusb_control_transfer(devh, CTRL_IN, 0xc, REQ_READDATA,
+ 0, packet, 1, TIMEOUT);
+ if (ret != 1)
+ printf("%s: libusb_control_transfer returned %d, val=%hhx\n",
+ __FUNCTION__, ret, packet[0]);
+ return (ret == 1) ? packet[0] : ret;
}
int gl_read_bulk(libusb_device_handle *devh, void *buffer, unsigned int size)
{
- unsigned char packet[8] = {0, 0, 0, 0, size & 0xff, (size & 0xff00) >> 8, (size & 0xff0000) >> 16, (size & 0xff000000)>>24};
- int transferred = 0;
-
- int retval = libusb_control_transfer(devh, CTRL_OUT, 0x4, REQ_READBULK, 0, packet, 8, TIMEOUT);
- if (retval != 8) printf("%s: libusb_control_transfer returned %d\n", __FUNCTION__, retval);
-
- retval = libusb_bulk_transfer(devh, ENDPOINT_BULK_IN, buffer, size,
- &transferred, TIMEOUT);
- if (retval < 0) {
- fprintf(stderr, "Bulk read error %d\n", retval);
- }
+ unsigned char packet[8] =
+ { 0, 0, 0, 0, size & 0xff, (size & 0xff00) >> 8,
+ (size & 0xff0000) >> 16, (size & 0xff000000) >> 24 };
+ int ret, transferred = 0;
+
+ ret = libusb_control_transfer(devh, CTRL_OUT, 0x4, REQ_READBULK,
+ 0, packet, 8, TIMEOUT);
+ if (ret != 8)
+ printf("%s: libusb_control_transfer returned %d\n",
+ __FUNCTION__, ret);
+
+ ret = libusb_bulk_transfer(devh, ENDPOINT_BULK_IN, buffer, size,
+ &transferred, TIMEOUT);
+ if (ret < 0)
+ fprintf(stderr, "Bulk read error %d\n", ret);
return transferred;
}
-int gl_reg_write(libusb_device_handle *devh, unsigned int reg, unsigned int val)
+int gl_reg_write(libusb_device_handle *devh, unsigned int reg,
+ unsigned int val)
{
- int retval;
- retval = gl_write_address(devh, reg);
- if (retval < 0)
- return retval;
- retval = gl_write_data(devh, val);
- return retval;
+ int ret;
+
+ ret = gl_write_address(devh, reg);
+ if (ret < 0)
+ return ret;
+ ret = gl_write_data(devh, val);
+ return ret;
}
int gl_reg_read(libusb_device_handle *devh, unsigned int reg)
{
- int retval;
- retval = gl_write_address(devh, reg);
- if (retval < 0)
- return retval;
- retval = gl_read_data(devh);
- return retval;
+ int ret;
+
+ ret = gl_write_address(devh, reg);
+ if (ret < 0)
+ return ret;
+ ret = gl_read_data(devh);
+ return ret;
}
int gl_open(int vid)
{
- int r = 1;
+ int ret;
+ struct libusb_device **devs;
+ struct libusb_device *dev;
+ size_t i = 0;
+ struct libusb_device_descriptor desc;
- r = libusb_init(NULL);
- if (r < 0)
+ ret = libusb_init(NULL);
+ if (ret < 0)
return GL_ELIBUSB;
libusb_set_debug(NULL, 0);
- struct libusb_device **devs;
- struct libusb_device *dev;
- size_t i = 0;
-
if (libusb_get_device_list(NULL, &devs) < 0) {
- r = GL_EOPEN;
+ ret = GL_EOPEN;
goto gl_open_error;
}
while ((dev = devs[i++]) != NULL) {
- struct libusb_device_descriptor desc;
if (libusb_get_device_descriptor(dev, &desc) < 0)
break;
libusb_free_device_list(devs, 1);
if (!g_devh) {
- r = GL_EOPEN;
+ ret = GL_EOPEN;
goto gl_open_error;
}
- r = libusb_set_configuration(g_devh, 1);
- if (r < 0) {
- r = GL_ESETCONFIG;
+ ret = libusb_set_configuration(g_devh, 1);
+ if (ret < 0) {
+ ret = GL_ESETCONFIG;
goto gl_open_error;
}
- r = libusb_claim_interface(g_devh, 0);
- if (r < 0) {
- r = GL_ECLAIM;
+ ret = libusb_claim_interface(g_devh, 0);
+ if (ret < 0) {
+ ret = GL_ECLAIM;
goto gl_open_error;
}
gl_open_error:
gl_close();
- return r;
+ return ret;
}
int gl_close(void)
projects / libsigrok.git / blobdiff