+++ /dev/null
-#include <stdio.h>
-#include <string.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/select.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <errno.h>
-#include <linux/usbdevice_fs.h>
-#include <linux/usb/ch9.h>
-
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
-
-struct teensy_dev {
- int fd;
- struct {
- int ep_in;
- int ep_out;
- } ifaces[2];
-};
-
-/* return 1 if founf, 0 if not, < 0 on error */
-static int find_device(struct teensy_dev *dev,
- uint16_t vendor, uint16_t product)
-{
- const char path_root[] = "/dev/bus/usb";
- union {
- struct usb_descriptor_header hdr;
- struct usb_device_descriptor d;
- struct usb_config_descriptor c;
- struct usb_interface_descriptor i;
- struct usb_endpoint_descriptor e;
- char space[0x100]; /* enough? */
- } desc;
- char path_bus[256], path_dev[256];
- struct dirent *ent, *ent_bus;
- DIR *dir = NULL, *dir_bus = NULL;
- int num, fd = -1;
- int iface = -1;
- int retval = -1;
- int ret;
-
- memset(dev, 0xff, sizeof(*dev));
-
- dir = opendir(path_root);
- if (dir == NULL) {
- perror("opendir");
- return -1;
- }
-
- for (ent = readdir(dir); ent != NULL; ent = readdir(dir)) {
- /* should be a number like 000 */
- if (sscanf(ent->d_name, "%03d", &num) != 1)
- continue;
-
- snprintf(path_bus, sizeof(path_bus), "%s/%s",
- path_root, ent->d_name);
-
- dir_bus = opendir(path_bus);
- if (dir_bus == NULL)
- continue;
-
- ent_bus = readdir(dir_bus);
- for (; ent_bus != NULL; ent_bus = readdir(dir_bus)) {
- if (sscanf(ent->d_name, "%03d", &num) != 1)
- continue;
-
- snprintf(path_dev, sizeof(path_dev), "%s/%s/%s",
- path_root, ent->d_name, ent_bus->d_name);
-
- fd = open(path_dev, O_RDWR);
- if (fd == -1)
- continue;
-
- ret = read(fd, &desc.d, sizeof(desc.d));
- if (ret != sizeof(desc.d)) {
- fprintf(stderr, "desc read: %d/%zd: ", ret, sizeof(desc.d));
- perror("");
- goto next;
- }
-
- if (desc.d.bDescriptorType != USB_DT_DEVICE) {
- fprintf(stderr, "%s: bad DT: 0x%02x\n",
- path_dev, desc.d.bDescriptorType);
- goto next;
- }
-
- if (desc.d.idVendor == vendor && desc.d.idProduct == product)
- goto found;
-
-next:
- close(fd);
- fd = -1;
- }
-
- closedir(dir_bus);
- dir_bus = NULL;
- }
-
- /* not found */
- retval = 0;
- goto out;
-
-found:
- if (desc.d.bNumConfigurations != 1) {
- fprintf(stderr, "unexpected bNumConfigurations: %u\n",
- desc.d.bNumConfigurations);
- goto out;
- }
-
- /* walk through all descriptors */
- while (1)
- {
- ret = read(fd, &desc.hdr, sizeof(desc.hdr));
- if (ret == 0)
- break;
- if (ret != sizeof(desc.hdr)) {
- fprintf(stderr, "desc.hdr read: %d/%zd: ", ret, sizeof(desc.hdr));
- perror("");
- break;
- }
-
- ret = (int)lseek(fd, -sizeof(desc.hdr), SEEK_CUR);
- if (ret == -1) {
- perror("lseek");
- break;
- }
-
- ret = read(fd, &desc, desc.hdr.bLength);
- if (ret != desc.hdr.bLength) {
- fprintf(stderr, "desc read: %d/%u: ", ret, desc.hdr.bLength);
- perror("");
- break;
- }
-
- switch (desc.hdr.bDescriptorType) {
- case USB_DT_CONFIG:
- if (desc.c.bNumInterfaces != 2) {
- fprintf(stderr, "unexpected bNumInterfaces: %u\n",
- desc.c.bNumInterfaces);
- goto out;
- }
- break;
-
- case USB_DT_INTERFACE:
- if (desc.i.bInterfaceClass != USB_CLASS_HID
- || desc.i.bInterfaceSubClass != 0
- || desc.i.bInterfaceProtocol != 0) {
- fprintf(stderr, "unexpected interface %x:%x:%x\n",
- desc.i.bInterfaceClass, desc.i.bInterfaceSubClass,
- desc.i.bInterfaceProtocol);
- goto out;
- }
- if (desc.i.bNumEndpoints != 2) {
- fprintf(stderr, "unexpected bNumEndpoints: %u\n",
- desc.i.bNumEndpoints);
- goto out;
- }
- iface++;
- break;
-
- case USB_DT_ENDPOINT:
- if (iface < 0 || iface >= ARRAY_SIZE(dev->ifaces)) {
- fprintf(stderr, "bad iface: %d\n", iface);
- goto out;
- }
- if (desc.e.wMaxPacketSize != 64 && desc.e.wMaxPacketSize != 32) {
- fprintf(stderr, "iface %d, EP %02x: "
- "unexpected wMaxPacketSize: %u\n",
- iface, desc.e.bEndpointAddress, desc.e.wMaxPacketSize);
- goto out;
- }
- if (desc.e.bEndpointAddress & 0x80)
- dev->ifaces[iface].ep_in = desc.e.bEndpointAddress; // & 0x7F;
- else
- dev->ifaces[iface].ep_out = desc.e.bEndpointAddress;
- break;
-
- case 0x21:
- /* ignore */
- break;
-
- default:
- fprintf(stderr, "skipping desc 0x%02x\n",
- desc.hdr.bDescriptorType);
- break;
- }
- }
-
- /* claim interfaces */
- for (iface = 0; iface < ARRAY_SIZE(dev->ifaces); iface++) {
- struct usbdevfs_ioctl usbio;
-
- if (dev->ifaces[iface].ep_in == -1) {
- fprintf(stderr, "missing ep_in, iface: %d\n", iface);
- goto out;
- }
- if (dev->ifaces[iface].ep_out == -1) {
- fprintf(stderr, "missing ep_out, iface: %d\n", iface);
- goto out;
- }
-
- /* disconnect default driver */
- memset(&usbio, 0, sizeof(usbio));
- usbio.ifno = iface;
- usbio.ioctl_code = USBDEVFS_DISCONNECT;
- ret = ioctl(fd, USBDEVFS_IOCTL, &usbio);
- if (ret != 0 && errno != ENODATA)
- perror("USBDEVFS_DISCONNECT");
-
- ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &iface);
- if (ret != 0)
- perror("USBDEVFS_CLAIMINTERFACE");
- }
-
- dev->fd = fd;
- fd = -1;
- retval = 1;
-
-out:
- if (fd != -1)
- close(fd);
- if (dir_bus != NULL)
- closedir(dir_bus);
- if (dir != NULL)
- closedir(dir);
-
- return retval;
-}
-
-enum my_urbs {
- URB_DATA_IN,
- URB_DATA_OUT,
- URB_DBG_IN,
- URB_CNT
-};
-
-int main(int argc, char *argv[])
-{
- struct teensy_dev dev;
- struct usbdevfs_urb urb[URB_CNT];
- struct usbdevfs_urb *reaped_urb;
- char buf_dbg[64 + 1], buf_in[64];
- int wait_device = 0;
- int dbg_in_sent = 0;
- int data_in_sent = 0;
- fd_set wfds;
- int ret;
-
- dev.fd = -1;
-
- while (1)
- {
- if (dev.fd == -1) {
- ret = find_device(&dev, 0x16C0, 0x0486);
- if (ret < 0)
- return ret;
-
- if (ret == 0) {
- if (!wait_device) {
- printf("waiting for device..\n");
- wait_device = 1;
- }
- usleep(250000);
- continue;
- }
-
- wait_device = 0;
- data_in_sent = 0;
- dbg_in_sent = 0;
- }
-
- if (!data_in_sent) {
- memset(&urb[URB_DATA_IN], 0, sizeof(urb[URB_DATA_IN]));
- urb[URB_DATA_IN].type = USBDEVFS_URB_TYPE_INTERRUPT;
- urb[URB_DATA_IN].endpoint = dev.ifaces[0].ep_in;
- urb[URB_DATA_IN].buffer = buf_in;
- urb[URB_DATA_IN].buffer_length = sizeof(buf_in);
-
- ret = ioctl(dev.fd, USBDEVFS_SUBMITURB, &urb[URB_DATA_IN]);
- if (ret != 0) {
- perror("USBDEVFS_SUBMITURB URB_DATA_IN");
- return 1;
- }
- data_in_sent = 1;
- }
- if (!dbg_in_sent) {
- memset(&urb[URB_DBG_IN], 0, sizeof(urb[URB_DBG_IN]));
- urb[URB_DBG_IN].type = USBDEVFS_URB_TYPE_INTERRUPT;
- urb[URB_DBG_IN].endpoint = dev.ifaces[1].ep_in;
- urb[URB_DBG_IN].buffer = buf_dbg;
- urb[URB_DBG_IN].buffer_length = sizeof(buf_dbg) - 1;
-
- ret = ioctl(dev.fd, USBDEVFS_SUBMITURB, &urb[URB_DBG_IN]);
- if (ret != 0) {
- perror("USBDEVFS_SUBMITURB URB_DBG_IN");
- return 1;
- }
- dbg_in_sent = 1;
- }
-
- FD_ZERO(&wfds);
- FD_SET(dev.fd, &wfds);
-
- ret = select(dev.fd + 1, NULL, &wfds, NULL, NULL);
- if (ret < 0) {
- perror("select");
- return 1;
- }
-
- if (FD_ISSET(dev.fd, &wfds)) {
- reaped_urb = NULL;
- ret = ioctl(dev.fd, USBDEVFS_REAPURB, &reaped_urb);
- if (ret != 0) {
- if (errno == ENODEV)
- goto dev_close;
- perror("USBDEVFS_REAPURB");
- return 1;
- }
-
- if (reaped_urb != NULL && reaped_urb->status != 0) {
- errno = -reaped_urb->status;
- perror("urb status");
- if (reaped_urb->status == -EILSEQ) {
- /* this is usually a sign of disconnect.. */
- usleep(250000);
- goto dev_close;
- }
- }
-
- if (reaped_urb == &urb[URB_DATA_IN]) {
- printf("*data*\n");
- data_in_sent = 0;
- }
- else if (reaped_urb == &urb[URB_DBG_IN]) {
- /* debug text */
- buf_dbg[reaped_urb->actual_length] = 0;
- printf("%s", buf_dbg);
- dbg_in_sent = 0;
- }
- else {
- fprintf(stderr, "reaped unknown urb? %p\n", reaped_urb);
- }
- }
- continue;
-
-dev_close:
- close(dev.fd);
- dev.fd = -1;
- }
-
- return 0;
-}
-
-// vim: ts=2:sw=2:expandtab
notaz.gp2x.de / megadrive.git / blobdiff