292 lines
6.7 KiB
C
292 lines
6.7 KiB
C
/* opcd_test - Low-Level test program for OpenPCD
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* (C) 2006 by Harald Welte <laforge@gnumonks.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#define _GNU_SOURCE
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#include <getopt.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <usb.h>
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#include "openpcd.h"
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const char *
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hexdump(const void *data, unsigned int len)
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{
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static char string[65535];
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unsigned char *d = (unsigned char *) data;
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unsigned int i, left, ofs;
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string[0] = '\0';
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ofs = snprintf(string, sizeof(string)-1, "(%u): ", len);
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left = sizeof(string) - ofs;
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for (i = 0; len--; i += 3) {
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if (i >= sizeof(string) -4)
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break;
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snprintf(string+ofs+i, 4, " %02x", *d++);
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}
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string[sizeof(string)-1] = '\0';
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return string;
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}
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#define OPCD_VENDOR_ID 0x2342
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#define OPCD_PRODUCT_ID 0x0001
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#define OPCD_OUT_EP 0x01
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#define OPCD_IN_EP 0x82
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static struct usb_dev_handle *hdl;
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static struct usb_device *find_opcd_device(void)
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{
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struct usb_bus *bus;
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for (bus = usb_busses; bus; bus = bus->next) {
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struct usb_device *dev;
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for (dev = bus->devices; dev; dev = dev->next) {
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if (dev->descriptor.idVendor == OPCD_VENDOR_ID
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&& dev->descriptor.idProduct == OPCD_PRODUCT_ID
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&& dev->descriptor.iManufacturer == 0
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&& dev->descriptor.iProduct == 0
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&& dev->descriptor.bNumConfigurations == 1
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&& dev->config->bNumInterfaces == 1
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&& dev->config->iConfiguration == 0)
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return dev;
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}
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}
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return NULL;
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}
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static int opcd_recv_reply(void)
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{
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char buf[8192];
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int ret, i;
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memset(buf, 0, sizeof(buf));
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ret = usb_bulk_read(hdl, OPCD_IN_EP, buf, sizeof(buf), 1000);
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if (ret < 0) {
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fprintf(stderr, "bulk_read returns %d(%s)\n", ret,
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usb_strerror());
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return ret;
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}
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printf("RX: %s\n", hexdump(buf, ret));
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return ret;
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}
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static int opcd_send_command(u_int8_t cmd, u_int8_t reg, u_int8_t val, u_int16_t len,
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const unsigned char *data)
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{
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unsigned char buf[8192];
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struct openpcd_hdr *ohdr = (struct openpcd_hdr *)buf;
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int cur = 0;
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int ret;
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memset(buf, 0, sizeof(buf));
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ohdr->cmd = cmd;
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ohdr->reg = reg;
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ohdr->val = val;
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ohdr->len = len;
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if (data && len)
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memcpy(ohdr->data, data, len);
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cur = sizeof(*ohdr) + len;
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printf("TX: %s\n", hexdump(buf, cur));
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ret = usb_bulk_write(hdl, OPCD_OUT_EP, buf, cur, 0);
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if (ret < 0) {
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fprintf(stderr, "bulk_write returns %d(%s)\n", ret,
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usb_strerror());
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return ret;
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}
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/* this usleep is required in order to make the process work.
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* apparently some race condition in the bootloader if we feed
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* data too fast */
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usleep(5000);
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//return ezx_blob_recv_reply();
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}
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static int get_number(const char *optarg, unsigned int min,
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unsigned int max, unsigned int *num)
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{
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char *endptr;
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unsigned long nbr = strtoul(optarg, &endptr, 0);
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//fprintf(stderr, "trying to read `%s' as number\n", optarg);
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if (nbr == 0 && optarg == endptr)
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return -EINVAL;
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if (nbr < min || nbr > max)
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return -ERANGE;
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*num = nbr;
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return 0;
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}
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static void print_welcome(void)
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{
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printf("opcd_test - OpenPCD Test and Debug Program\n"
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"(C) 2006 by Harald Welte <laforge@gnumonks.org>\n\n");
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}
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static void print_help(void)
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{
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printf( "\t-l\t--led-set\tled {0,1}\n"
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"\t-w\t--reg-write\treg value\n"
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"\t-r\t--reg-read\treg\n"
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"\t-s\t--set-bits\treg\tmask\n"
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"\t-c\t--clear-bits\treg\tmask\n");
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}
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static struct option opts[] = {
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{ "led-set", 1, 0, 'l' },
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{ "reg-write", 1, 0, 'w' },
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{ "reg-read", 1, 0, 'r' },
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{ "fifo-write", 1, 0, 'W' },
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{ "fifo-read", 1, 0, 'R' },
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{ "set-bits", 1, 0, 's' },
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{ "clear-bits", 1, 0, 'c' },
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{ "help", 0, 0, 'h'},
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};
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int main(int argc, char **argv)
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{
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struct usb_device *dev;
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int c;
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print_welcome();
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usb_init();
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if (!usb_find_busses())
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exit(1);
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if (!usb_find_devices())
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exit(1);
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dev = find_opcd_device();
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if (!dev) {
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printf("Cannot find OpenPCD device. Are you sure it is connected?\n");
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exit(1);
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}
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hdl = usb_open(dev);
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if (!hdl) {
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printf("Unable to open usb device: %s\n", usb_strerror());
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exit(1);
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}
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if (usb_claim_interface(hdl, 0) < 0) {
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printf("Unable to claim usb interface 1 of device: %s\n", usb_strerror());
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exit(1);
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}
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while (1) {
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int option_index = 0;
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c = getopt_long(argc, argv, "l:r:w:R:W:s:c:h?", opts,
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&option_index);
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if (c == -1)
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break;
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switch (c) {
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unsigned int i,j;
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case 'l':
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if (get_number(optarg, 1, 2, &i) < 0)
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exit(2);
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if (get_number(argv[optind], 0, 1, &j) < 0)
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exit(2);
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printf("setting LED %d to %s\n", i, j ? "on" : "off");
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opcd_send_command(OPENPCD_CMD_SET_LED, i, j, 0, NULL);
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opcd_recv_reply();
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break;
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case 'r':
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if (get_number(optarg, 0x00, OPENPCD_REG_MAX, &i) < 0)
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exit(2);
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printf("reading register 0x%02x: ");
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opcd_send_command(OPENPCD_CMD_READ_REG, i, 0, 0, NULL);
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opcd_recv_reply();
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break;
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case 'w':
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if (get_number(optarg, 0x00, OPENPCD_REG_MAX, &i) < 0) {
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fprintf(stderr, "can't read register\n");
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exit(2);
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}
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if (get_number(argv[optind], 0x00, 0xff, &j) < 0) {
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fprintf(stderr, "can't read value\n");
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exit(2);
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}
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fprintf(stdout, "setting register 0x%02x to 0x%02x\n", i, j);
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opcd_send_command(OPENPCD_CMD_WRITE_REG, i, j, 0, NULL);
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opcd_recv_reply();
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break;
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case 'R':
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if (get_number(optarg, 0x00, OPENPCD_REG_MAX, &i) < 0)
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exit(2);
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opcd_send_command(OPENPCD_CMD_READ_FIFO, 0, i, 0, NULL);
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opcd_recv_reply();
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break;
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case 'W':
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fprintf(stderr, "FIFO write not implemented yet\n");
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break;
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case 's':
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if (get_number(optarg, 0x00, OPENPCD_REG_MAX, &i) < 0)
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exit(2);
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if (get_number(argv[optind], 0x00, 0xff, &j) < 0)
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exit(2);
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opcd_send_command(OPENPCD_CMD_REG_BITS_SET, i, j, 0, NULL);
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opcd_recv_reply();
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break;
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case 'c':
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if (get_number(optarg, 0x00, OPENPCD_REG_MAX, &i) < 0)
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exit(2);
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if (get_number(argv[optind], 0x00, 0xff, &j) < 0)
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exit(2);
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opcd_send_command(OPENPCD_CMD_REG_BITS_CLEAR, i, j, 0, NULL);
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opcd_recv_reply();
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break;
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case 'h':
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case '?':
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print_help();
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exit(0);
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break;
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default:
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fprintf(stderr, "unknown key `%c'\n", c);
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print_help();
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exit(2);
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break;
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}
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}
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sleep(1);
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exit(0);
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}
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