blackmagic-debug/blackmagic
1
0
Fork 0
mirror of https://github.com/blackmagic-debug/blackmagic.git synced 2025-10-14 02:58:36 +08:00
Code Issues Packages Projects Releases Wiki Activity

swolisten: Add support for walking USB descriptors

Browse Source
This commit is contained in:
ALTracer
2024-08-18 22:27:44 +03:00
parent c43c128789
commit 3a3558d7e1
1 changed files with 30 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
scripts/swolisten.c
View File

@@ -40,8 +40,7 @@
#define VID (0x1d50)
#define PID (0x6018)
#define INTERFACE (5)
#define ENDPOINT (0x85)
#define IFACE_STR "Black Magic Trace Capture"
#define TRANSFER_SIZE (64)
#define NUM_FIFOS 32
@@ -417,6 +416,7 @@ int usbFeeder(void)
unsigned char cbw[TRANSFER_SIZE];
libusb_device_handle *handle;
libusb_device *dev;
struct libusb_config_descriptor *config;
int size;
while (1)
@@ -435,10 +435,36 @@ int usbFeeder(void)
if (!(dev = libusb_get_device(handle)))
continue;
if (libusb_claim_interface (handle, INTERFACE)<0)
uint8_t bmp_interface = 0;
uint8_t bmp_endpoint = 0;
if (libusb_get_active_config_descriptor(dev, &config) < 0)
continue;
while (0==libusb_bulk_transfer(handle, ENDPOINT, cbw, TRANSFER_SIZE, &size, 10))
int interface_found = 0;
for (uint8_t if_num = 0; if_num < config->bNumInterfaces && !interface_found; if_num++) {
for (int alt_num = 0; alt_num < config->interface[if_num].num_altsetting && !interface_found; alt_num++) {
const struct libusb_interface_descriptor *i = &config->interface[if_num].altsetting[alt_num];
char itfString[256] = {0};
int ret = libusb_get_string_descriptor_ascii(handle, i->iInterface, (unsigned char*)itfString, 256);
if (ret < 0)
continue;
if (strcmp (itfString, IFACE_STR) != 0)
continue;
bmp_interface = i->bInterfaceNumber;
bmp_endpoint = i->endpoint[0].bEndpointAddress;
interface_found = 1;
}
}
libusb_free_config_descriptor(config);
if (libusb_claim_interface (handle, bmp_interface)<0)
continue;
while (0==libusb_bulk_transfer(handle, bmp_endpoint, cbw, TRANSFER_SIZE, &size, 10))
{
unsigned char *c=cbw;
if (options.dump)