From 73cd53129529f2dce70072953bfd50ec9dc6b8ea Mon Sep 17 00:00:00 2001 From: hathach Date: Fri, 6 Mar 2026 17:22:38 +0700 Subject: replace printer_to_hid example with printer_to_cdc example fix printer GET_DEVICE_ID request weird wIndex (interface high, alt low) --- src/device/usbd.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'src/device') diff --git a/src/device/usbd.c b/src/device/usbd.c index 8d5f94313..42903576c 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -836,7 +836,9 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const #if CFG_TUSB_DEBUG >= CFG_TUD_LOG_LEVEL if (TUSB_REQ_TYPE_STANDARD == p_request->bmRequestType_bit.type && p_request->bRequest <= TUSB_REQ_SYNCH_FRAME) { TU_LOG_USBD(" %s", tu_str_std_request[p_request->bRequest]); - if (TUSB_REQ_GET_DESCRIPTOR != p_request->bRequest) TU_LOG_USBD("\r\n"); + if (TUSB_REQ_GET_DESCRIPTOR != p_request->bRequest) { + TU_LOG_USBD("\r\n"); + } } #endif @@ -972,7 +974,25 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const //------------- Class/Interface Specific Request -------------// case TUSB_REQ_RCPT_INTERFACE: { - uint8_t const itf = tu_u16_low(p_request->wIndex); + uint8_t itf; + #if CFG_TUD_PRINTER + // Printer GET_DEVICE_ID has a weird wIndex = interface (high) | alt (low) + // attempt to interpret this as a printer request if matched + if (TUSB_REQ_TYPE_CLASS == p_request->bmRequestType_bit.type && + TUSB_DIR_IN == p_request->bmRequestType_bit.direction && + TUSB_PRINTER_REQUEST_GET_DEVICE_ID == p_request->bRequest) { + itf = tu_u16_high(p_request->wIndex); + if (itf < TU_ARRAY_SIZE(_usbd_dev.itf2drv)) { + const usbd_class_driver_t * driver = get_driver(_usbd_dev.itf2drv[itf]); + if (driver != NULL && driver->control_xfer_cb == printerd_control_xfer_cb) { + if (invoke_class_control(rhport, driver, p_request)) { + return true; + } + } + } + } + #endif + itf = tu_u16_low(p_request->wIndex); TU_VERIFY(itf < TU_ARRAY_SIZE(_usbd_dev.itf2drv)); usbd_class_driver_t const * driver = get_driver(_usbd_dev.itf2drv[itf]); -- cgit v1.3.1