sakumisu/CherryUSB
1
0
Fork 0
mirror of https://github.com/sakumisu/CherryUSB.git synced 2025-05-09 00:21:44 +08:00
Code Issues Packages Projects Releases Wiki Activity

update(class/hid/usbh_hid): read report size from hid desc

Browse Source
This commit is contained in:
sakumisu 2024-08-18 20:54:39 +08:00
parent f1e7043384
commit f0fc75179e
2 changed files with 56 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
class/hid/usbh_hid.c
View File

@ -12,6 +12,14 @@
#define DEV_FORMAT "/dev/input%d"
/* general descriptor field offsets */
#define DESC_bLength 0 /** Length offset */
#define DESC_bDescriptorType 1 /** Descriptor type offset */
/* interface descriptor field offsets */
#define INTF_DESC_bInterfaceNumber 2 /** Interface number offset */
#define INTF_DESC_bAlternateSetting 3 /** Alternate setting offset */
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_hid_buf[CONFIG_USBHOST_MAX_HID_CLASS][USB_ALIGN_UP(256, CONFIG_USB_ALIGN_SIZE)];
static struct usbh_hid g_hid_class[CONFIG_USBHOST_MAX_HID_CLASS];
@ -56,7 +64,7 @@ static int usbh_hid_get_report_descriptor(struct usbh_hid *hid_class, uint8_t *b
setup->bRequest = USB_REQUEST_GET_DESCRIPTOR;
setup->wValue = HID_DESCRIPTOR_TYPE_HID_REPORT << 8;
setup->wIndex = hid_class->intf;
setup->wLength = 128;
setup->wLength = hid_class->report_size;
ret = usbh_control_transfer(hid_class->hport, setup, g_hid_buf[hid_class->minor]);
if (ret < 0) {
@ -172,6 +180,9 @@ int usbh_hid_connect(struct usbh_hubport *hport, uint8_t intf)
{
struct usb_endpoint_descriptor *ep_desc;
int ret;
uint8_t cur_iface = 0xff;
uint8_t *p;
bool found = false;
struct usbh_hid *hid_class = usbh_hid_class_alloc();
if (hid_class == NULL) {
@ -184,6 +195,47 @@ int usbh_hid_connect(struct usbh_hubport *hport, uint8_t intf)
hport->config.intf[intf].priv = hid_class;
p = hport->raw_config_desc;
while (p[DESC_bLength]) {
switch (p[DESC_bDescriptorType]) {
case USB_DESCRIPTOR_TYPE_INTERFACE:
cur_iface = p[INTF_DESC_bInterfaceNumber];
if (cur_iface == intf) {
hid_class->protocol = p[7];
struct usb_hid_descriptor *desc = (struct usb_hid_descriptor *)(p + 9);
if (desc->bDescriptorType != HID_DESCRIPTOR_TYPE_HID) {
USB_LOG_ERR("HID descriptor not found\r\n");
return -USB_ERR_INVAL;
}
if (desc->subdesc[0].bDescriptorType != HID_DESCRIPTOR_TYPE_HID_REPORT) {
USB_LOG_ERR("HID report descriptor not found\r\n");
return -USB_ERR_INVAL;
}
hid_class->report_size = desc->subdesc[0].wDescriptorLength;
if (hid_class->report_size > sizeof(g_hid_buf[hid_class->minor])) {
USB_LOG_ERR("HID report descriptor too large\r\n");
return -USB_ERR_INVAL;
}
found = true;
goto found;
}
break;
default:
break;
}
/* skip to next descriptor */
p += p[DESC_bLength];
}
if (found == false) {
USB_LOG_ERR("HID interface not found\r\n");
return -USB_ERR_INVAL;
}
found:
// /* 0x0 = boot protocol, 0x1 = report protocol */
// ret = usbh_hid_set_protocol(hid_class, 0x1);
// if (ret < 0) {

3
class/hid/usbh_hid.h
View File

@ -16,6 +16,9 @@ struct usbh_hid {
struct usbh_urb intout_urb; /* INTR OUT urb */
uint8_t report_desc[256];
uint16_t report_size;
uint8_t protocol;
uint8_t intf; /* interface number */
uint8_t minor;