transferring hid packets larger than CFG_TUD_HID_EP_BUFSIZE

[CNflysky]

Related area

hid class driver

Hardware specification

rp2040

Is your feature request related to a problem?

hello,
im currently developing hid-compatible touchscreen on custom RP2040 boards. my issue is, the size of touchscreen hid report (83 bytes) is too big for CFG_TUD_HID_EP_BUFSIZE, as it can't be larger than 64 otherwise tinyusb init will fail.

Describe the solution you'd like

Would you developers add some kind of "mechanism" that can deal oversized hid buffer transfer requests ,like split them into multiple chunks to transfer?

btw some vendor required report size is also larger than 64 bytes, like this binary blob found on msdn.

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.

[CNflysky]

ugly workaround:
assume CFG_TUD_HID_EP_BUFSIZE is 64.

uint8_t buffer[83] = {0x00};
tud_hid_report(1, &buffer, CFG_TUD_HID_EP_BUFSIZE - 1);
bool part_transfered = true;

void tud_hid_report_complete_cb(uint8_t instance, uint8_t const *report,
                                uint16_t len) {
  if (part_transfered) {
    tud_hid_report(
        0, (void *)((uint32_t)&buffer + CFG_TUD_HID_EP_BUFSIZE - 1),
        sizeof(buffer) + 1 - CFG_TUD_HID_EP_BUFSIZE);
    part_transfered = false;
  }
}