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Adding a secondary HID interface that emulates a keyboard.

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With it, an app can send a password directly to the host, like it is typed by user.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-12-30 01:41:49 +01:00
parent 20bd2c8b41
commit 411755dee4
6 changed files with 99 additions and 13 deletions
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26
src/usb/usb_descriptors.c
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@@ -79,7 +79,7 @@ tusb_desc_configuration_t const desc_config =
+ sizeof(tusb_desc_interface_t) + sizeof(struct ccid_class_descriptor) + 2*sizeof(tusb_desc_endpoint_t)
#endif
#ifdef USB_ITF_HID
+ TUD_HID_INOUT_DESC_LEN
+ TUD_HID_INOUT_DESC_LEN + TUD_HID_DESC_LEN
#endif
),
.bNumInterfaces = ITF_TOTAL,
@@ -156,12 +156,13 @@ static uint8_t desc_config_extended[sizeof(tusb_desc_configuration_t)
+ sizeof(tusb_desc_interface_t) + sizeof(struct ccid_class_descriptor) + 2*sizeof(tusb_desc_endpoint_t)
#endif
#ifdef USB_ITF_HID
+ TUD_HID_INOUT_DESC_LEN
+ TUD_HID_INOUT_DESC_LEN + TUD_HID_DESC_LEN
#endif
];
#ifdef USB_ITF_HID
#define HID_USAGE_PAGE_FIDO 0xF1D0
enum
{
HID_USAGE_FIDO_U2FHID = 0x01, // U2FHID usage for top-level collection
@@ -195,17 +196,28 @@ uint8_t const desc_hid_report[] =
{
TUD_HID_REPORT_DESC_FIDO_U2F(CFG_TUD_HID_EP_BUFSIZE)
};
uint8_t const desc_hid_report_kb[] =
{
TUD_HID_REPORT_DESC_KEYBOARD(HID_REPORT_ID(REPORT_ID_KEYBOARD))
};
#define EPNUM_HID 0x03
static uint8_t desc_hid[] = {
// Interface number, string index, protocol, report descriptor len, EP In & Out address, size & polling interval
TUD_HID_INOUT_DESCRIPTOR(ITF_HID, ITF_HID+5, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_HID, 0x80 | EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 10)
TUD_HID_INOUT_DESCRIPTOR(ITF_HID, ITF_HID+5, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_HID, 0x80 | EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 10)
};
static uint8_t desc_hid_kb[] = {
TUD_HID_DESCRIPTOR(ITF_KEYBOARD, ITF_KEYBOARD+5, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report_kb), 0x80 | (EPNUM_HID+1), 16, 5)
};
uint8_t const * tud_hid_descriptor_report_cb(uint8_t itf)
{
printf("report_cb %d\n", itf);
return desc_hid_report;
printf("report_cb %d\n", itf);
if (itf == ITF_HID)
return desc_hid_report;
else if (itf == ITF_KEYBOARD)
return desc_hid_report_kb;
return NULL;
}
#endif
@@ -220,6 +232,7 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
memcpy(p, &desc_config, sizeof(tusb_desc_configuration_t)); p += sizeof(tusb_desc_configuration_t);
#ifdef USB_ITF_HID
memcpy(p, &desc_hid, sizeof(desc_hid)); p += sizeof(desc_hid);
memcpy(p, &desc_hid_kb, sizeof(desc_hid_kb)); p += sizeof(desc_hid_kb);
#endif
#ifdef USB_ITF_CCID
memcpy(p, &desc_interface, sizeof(tusb_desc_interface_t)); p += sizeof(tusb_desc_interface_t);
@@ -261,6 +274,7 @@ char const* string_desc_arr [] =
"Pico Key Config" // 4: Vendor Interface
#ifdef USB_ITF_HID
,"Pico Key HID Interface"
,"Pico Key HID Keyboard Interface"
#endif
#ifdef USB_ITF_CCID
,"Pico Key CCID Interface"