2 * This file is part of the sigrok project.
4 * Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * Helper functions for the Cypress EZ-USB / FX2 series chips.
25 #include <sigrok-internal.h>
28 #include <glib/gstdio.h>
34 int ezusb_reset(struct libusb_device_handle *hdl, int set_clear)
39 sr_info("setting CPU reset mode %s...", set_clear ? "on" : "off");
40 buf[0] = set_clear ? 1 : 0;
41 err = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR, 0xa0,
42 0xe600, 0x0000, buf, 1, 100);
44 sr_warn("Unable to send control request: %d", err);
49 int ezusb_install_firmware(libusb_device_handle *hdl, const char *filename)
52 int offset, chunksize, err, result;
53 unsigned char buf[4096];
55 sr_info("Uploading firmware at %s", filename);
56 if ((fw = g_fopen(filename, "rb")) == NULL) {
57 sr_warn("Unable to open firmware file %s for reading: %s",
58 filename, strerror(errno));
64 chunksize = fread(buf, 1, 4096, fw);
67 err = libusb_control_transfer(hdl, LIBUSB_REQUEST_TYPE_VENDOR |
68 LIBUSB_ENDPOINT_OUT, 0xa0, offset,
69 0x0000, buf, chunksize, 100);
71 sr_warn("Unable to send firmware to device: %d", err);
75 sr_info("Uploaded %d bytes", chunksize);
79 sr_info("Firmware upload done");
84 int ezusb_upload_firmware(libusb_device *dev, int configuration,
87 struct libusb_device_handle *hdl;
90 sr_info("uploading firmware to device on %d.%d",
91 libusb_get_bus_number(dev), libusb_get_device_address(dev));
93 err = libusb_open(dev, &hdl);
95 sr_warn("failed to open device: %d", err);
99 if (libusb_kernel_driver_active(hdl, 0)) {
100 err = libusb_detach_kernel_driver(hdl, 0);
102 g_warning("failed to detach kernel driver: %d", err);
107 err = libusb_set_configuration(hdl, configuration);
109 sr_warn("Unable to set configuration: %d", err);
113 if ((ezusb_reset(hdl, 1)) < 0)
116 if (ezusb_install_firmware(hdl, filename) != 0)
119 if ((ezusb_reset(hdl, 0)) < 0)