static const char*
get_string(libusb_device_handle* handle, int index)
{
static char str[STRING_DESCRIPTOR_SIZE];
int code;
if (index <= 0) {
return "unknown";
}
code = get_string_descriptor(handle, index, str, sizeof(str));
if (code != 0) {
libusb_close(handle);
failure(NULL, code);
}
str[sizeof(str)/sizeof(str[0]) - 1] = 0;
return str;
}
void Y_usb_get_string(int argc)
{
char str[STRING_DESCRIPTOR_SIZE];
ydev_instance_t* obj;
int index;
int ret;
if (argc != 2) {
y_error("expecting exactly 2 arguments");
}
obj = get_device(1);
index = ygets_i(0);
ret = get_string_descriptor(obj->handle, index, str, sizeof(str));
if (ret < 0) {
ypush_int(ret);
} else {
str[sizeof(str)/sizeof(str[0]) - 1] = 0;
push_string(str);
}
}
static unsigned int
handle_standard_requests()
{
switch(usb_setup_buffer.bmRequestType) {
case 0x80: /* standard device IN requests */
switch(usb_setup_buffer.bRequest) {
case GET_DESCRIPTOR:
switch (HIGH_BYTE(usb_setup_buffer.wValue)) {
case DEVICE:
get_device_descriptor();
break;
case CONFIGURATION:
get_configuration_descriptor();
break;
case STRING:
get_string_descriptor();
break;
default:
/* Unknown descriptor */
return 0;
}
break;
case GET_CONFIGURATION:
get_configuration();
break;
case GET_STATUS:
get_device_status();
break;
case GET_INTERFACE:
get_interface();
break;
default:
return 0;
}
break;
case 0x81: /* standard interface IN requests */
switch(usb_setup_buffer.bRequest) {
case GET_STATUS:
get_interface_status();
break;
#ifdef HID_ENABLED
case GET_DESCRIPTOR:
switch (USB_setup_buffer.wValue.byte.high) {
case REPORT:
get_report_descriptor();
break;
}
break;
#endif
default:
return 0;
}
break;
case 0x82: /* standard endpoint IN requests */
switch(usb_setup_buffer.bRequest) {
case GET_STATUS:
get_endpoint_status();
break;
default:
return 0;
}
break;
case 0x00: /* standard device OUT requests */
switch(usb_setup_buffer.bRequest) {
case SET_ADDRESS:
PRINTF("Address: %d\r\n", LOW_BYTE(usb_setup_buffer.wValue));
usb_flags |= USB_FLAG_ADDRESS_PENDING;
/* The actual setting of the address is done when the status packet
is sent. */
usb_send_ctrl_status();
break;
#if SETABLE_STRING_DESCRIPTORS > 0
case SET_DESCRIPTOR:
if (usb_setup_buffer.wValue.byte.high == STRING) {
set_string_descriptor();
} else {
return 0;
}
break;
#endif
case SET_CONFIGURATION:
if (set_configuration()) {
#if 0
config_msg.data.config = LOW_BYTE(usb_setup_buffer.wValue);
notify_user(&config_msg);
#endif
}
break;
default:
return 0;
}
break;
case 0x01: /* standard interface OUT requests */
switch(usb_setup_buffer.bRequest) {
case SET_INTERFACE:
/* Change interface here if we support more than one */
usb_send_ctrl_status();
break;
default:
return 0;
}
break;
case 0x02: /* standard endpoint OUT requests */
switch(usb_setup_buffer.bRequest) {
case SET_FEATURE:
case CLEAR_FEATURE:
if (usb_setup_buffer.wValue == ENDPOINT_HALT_FEATURE) {
usb_arch_halt_endpoint(usb_setup_buffer.wIndex, usb_setup_buffer.bRequest== SET_FEATURE);
usb_send_ctrl_status();
} else {
usb_error_stall();
}
break;
default:
return 0;
}
break;
#ifdef HID_ENABLED
case 0xa1: /* class specific interface IN request*/
switch(USB_setup_buffer.bRequest) {
case GET_HID_REPORT:
PRINTF("Get report\r\n");
send_ctrl_response((code u_int8_t*)&zero_byte,
sizeof(zero_byte));
break;
case GET_HID_IDLE:
PRINTF("Get idle\r\n");
send_ctrl_response((code u_int8_t*)&zero_byte,
sizeof(zero_byte));
break;
default:
return 0;
}
break;
case 0x21: /* class specific interface OUT request*/
switch(USB_setup_buffer.bRequest) {
case SET_HID_IDLE:
PRINTF("Set idle\r\n");
send_ctrl_status();
break;
default:
return 0;
}
break;
#endif
default:
return 0;
}
return 1;
}
