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Initial CDC implementation

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This commit is contained in:
Lorow
2025-08-30 22:29:18 +02:00
parent f818023d0a
commit 0c9e254aba
8 changed files with 169 additions and 81 deletions
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27
components/usb_device_uvc/tusb/usb_descriptors.c
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@@ -65,14 +65,18 @@ uint8_t const *tud_descriptor_device_cb(void)
// Configuration Descriptor
//--------------------------------------------------------------------+
// String descriptor indices used in interface descriptors
#define STRID_LANGID 0
#define STRID_MANUFACTURER 1
#define STRID_PRODUCT 2
#define STRID_SERIAL 3
#define STRID_UVC_CAM1 4
#define STRID_LANGID 0
#define STRID_MANUFACTURER 1
#define STRID_PRODUCT 2
#define STRID_SERIAL 3
#define STRID_UVC_CAM1 4
// Endpoint numbers for CDC
#define EPNUM_CDC_NOTIF 0x81
#define EPNUM_CDC_OUT 0x02
#define EPNUM_CDC_IN 0x82
// Endpoint numbers for UVC video IN endpoints (device -> host)
#define EPNUM_CAM1_VIDEO_IN 0x81
#define EPNUM_CAM1_VIDEO_IN 0x83
#if CFG_TUD_CAM1_VIDEO_STREAMING_BULK
@@ -113,7 +117,7 @@ uint8_t const *tud_descriptor_device_cb(void)
#endif // CFG_TUD_CAM1_VIDEO_STREAMING_BULK
// Total length of this configuration
#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CAM1_VIDEO_CAPTURE_DESC_LEN)
#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_CAM1_VIDEO_CAPTURE_DESC_LEN)
// Full-speed configuration descriptor
static uint8_t const desc_fs_configuration[] = {
@@ -121,6 +125,7 @@ static uint8_t const desc_fs_configuration[] = {
// total_length, attributes, power_mA)
// attributes: 0 = bus-powered (default). Add TUSB_DESC_CONFIG_ATT_SELF_POWERED or _REMOTE_WAKEUP if needed.
TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0, 500),
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 6, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
// IAD for Video Control
#if CFG_TUD_CAM1_VIDEO_STREAMING_BULK
#if CONFIG_UVC_CAM1_MULTI_FRAMESIZE
@@ -235,16 +240,16 @@ uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid)
// Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
if (!(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0])))
if (!(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0])))
{
return NULL;
}
const char *str = string_desc_arr[index];
// Allow dynamic overrides for specific indices
if (index == STRID_SERIAL)
// Allow dynamic overrides for specific indices
if (index == STRID_SERIAL)
str = get_serial_number();
if (index == STRID_UVC_CAM1)
if (index == STRID_UVC_CAM1)
str = get_uvc_device_name();
if (str == NULL)
str = string_desc_arr[index];