/** * @brief Default EP0 OUT callback. * @details This function is used by the low level driver as default handler * for EP0 OUT events. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number, always zero * * @notapi */ void _usb_ep0out(USBDriver *usbp, usbep_t ep) { (void)ep; switch (usbp->ep0state) { case USB_EP0_RX: /* Receive phase over, sending the zero sized status packet.*/ usbp->ep0state = USB_EP0_SENDING_STS; usbPrepareTransmit(usbp, 0, NULL, 0); chSysLockFromIsr(); usbStartTransmitI(usbp, 0); chSysUnlockFromIsr(); return; case USB_EP0_WAITING_STS: /* Status packet received, it must be zero sized, invoking the callback if defined.*/ if (usbGetReceiveTransactionSizeI(usbp, 0) != 0) break; if (usbp->ep0endcb != NULL) usbp->ep0endcb(usbp); usbp->ep0state = USB_EP0_WAITING_SETUP; return; default: ; } /* Error response, the state machine goes into an error state, the low level layer will have to reset it to USB_EP0_WAITING_SETUP after receiving a SETUP packet.*/ usb_lld_stall_in(usbp, 0); usb_lld_stall_out(usbp, 0); _usb_isr_invoke_event_cb(usbp, USB_EVENT_STALLED); usbp->ep0state = USB_EP0_ERROR; }
/** * @brief Default EP0 IN callback. * @details This function is used by the low level driver as default handler * for EP0 IN events. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number, always zero * * @notapi */ void _usb_ep0in(USBDriver *usbp, usbep_t ep) { size_t max; (void)ep; switch (usbp->ep0state) { case USB_EP0_TX: max = (size_t)get_hword(&usbp->setup[6]); /* If the transmitted size is less than the requested size and it is a multiple of the maximum packet size then a zero size packet must be transmitted.*/ if ((usbp->ep0n < max) && ((usbp->ep0n % usbp->epc[0]->in_maxsize) == 0U)) { usbPrepareTransmit(usbp, 0, NULL, 0); osalSysLockFromISR(); (void) usbStartTransmitI(usbp, 0); osalSysUnlockFromISR(); usbp->ep0state = USB_EP0_WAITING_TX0; return; } /* Falls into, it is intentional.*/ case USB_EP0_WAITING_TX0: /* Transmit phase over, receiving the zero sized status packet.*/ usbp->ep0state = USB_EP0_WAITING_STS; #if (USB_EP0_STATUS_STAGE == USB_EP0_STATUS_STAGE_SW) usbPrepareReceive(usbp, 0, NULL, 0); osalSysLockFromISR(); (void) usbStartReceiveI(usbp, 0); osalSysUnlockFromISR(); #else usb_lld_end_setup(usbp, ep); #endif return; case USB_EP0_SENDING_STS: /* Status packet sent, invoking the callback if defined.*/ if (usbp->ep0endcb != NULL) { usbp->ep0endcb(usbp); } usbp->ep0state = USB_EP0_WAITING_SETUP; return; case USB_EP0_WAITING_SETUP: case USB_EP0_WAITING_STS: case USB_EP0_RX: /* All the above are invalid states in the IN phase.*/ osalDbgAssert(false, "EP0 state machine error"); /* Falling through is intentional.*/ case USB_EP0_ERROR: /* Error response, the state machine goes into an error state, the low level layer will have to reset it to USB_EP0_WAITING_SETUP after receiving a SETUP packet.*/ usb_lld_stall_in(usbp, 0); usb_lld_stall_out(usbp, 0); _usb_isr_invoke_event_cb(usbp, USB_EVENT_STALLED); usbp->ep0state = USB_EP0_ERROR; return; default: osalDbgAssert(false, "EP0 state machine invalid state"); } }
/** * @brief Stalls an IN endpoint. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number * * @return The operation status. * @retval false Endpoint stalled. * @retval true Endpoint busy, not stalled. * * @iclass */ bool usbStallTransmitI(USBDriver *usbp, usbep_t ep) { osalDbgCheckClassI(); osalDbgCheck(usbp != NULL); if (usbGetTransmitStatusI(usbp, ep)) return true; usb_lld_stall_in(usbp, ep); return false; }
/** * @brief Stalls an IN endpoint. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number * * @return The operation status. * @retval FALSE Endpoint stalled. * @retval TRUE Endpoint busy, not stalled. * * @iclass */ bool_t usbStallTransmitI(USBDriver *usbp, usbep_t ep) { chDbgCheckClassI(); chDbgCheck(usbp != NULL, "usbStallTransmitI"); if (usbGetTransmitStatusI(usbp, ep)) return TRUE; usb_lld_stall_in(usbp, ep); return FALSE; }
/** * @brief Default EP0 OUT callback. * @details This function is used by the low level driver as default handler * for EP0 OUT events. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number, always zero * * @notapi */ void _usb_ep0out(USBDriver *usbp, usbep_t ep) { (void)ep; switch (usbp->ep0state) { case USB_EP0_RX: /* Receive phase over, sending the zero sized status packet.*/ usbp->ep0state = USB_EP0_SENDING_STS; #if (USB_EP0_STATUS_STAGE == USB_EP0_STATUS_STAGE_SW) usbPrepareTransmit(usbp, 0, NULL, 0); osalSysLockFromISR(); (void) usbStartTransmitI(usbp, 0); osalSysUnlockFromISR(); #else usb_lld_end_setup(usbp, ep); #endif return; case USB_EP0_WAITING_STS: /* Status packet received, it must be zero sized, invoking the callback if defined.*/ #if (USB_EP0_STATUS_STAGE == USB_EP0_STATUS_STAGE_SW) if (usbGetReceiveTransactionSizeI(usbp, 0) != 0U) { break; } #endif if (usbp->ep0endcb != NULL) { usbp->ep0endcb(usbp); } usbp->ep0state = USB_EP0_WAITING_SETUP; return; case USB_EP0_WAITING_SETUP: case USB_EP0_TX: case USB_EP0_WAITING_TX0: case USB_EP0_SENDING_STS: /* All the above are invalid states in the IN phase.*/ osalDbgAssert(false, "EP0 state machine error"); /* Falling through is intentional.*/ case USB_EP0_ERROR: /* Error response, the state machine goes into an error state, the low level layer will have to reset it to USB_EP0_WAITING_SETUP after receiving a SETUP packet.*/ usb_lld_stall_in(usbp, 0); usb_lld_stall_out(usbp, 0); _usb_isr_invoke_event_cb(usbp, USB_EVENT_STALLED); usbp->ep0state = USB_EP0_ERROR; return; default: osalDbgAssert(false, "EP0 state machine invalid state"); } }
/** * @brief Default EP0 IN callback. * @details This function is used by the low level driver as default handler * for EP0 IN events. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number, always zero * * @notapi */ void _usb_ep0in(USBDriver *usbp, usbep_t ep) { size_t max; (void)ep; switch (usbp->ep0state) { case USB_EP0_TX: max = usbFetchWord(&usbp->setup[6]); /* If the transmitted size is less than the requested size and it is a multiple of the maximum packet size then a zero size packet must be transmitted.*/ if ((usbp->ep0n < max) && ((usbp->ep0n % usbp->epc[0]->in_maxsize) == 0)) { usbPrepareTransmit(usbp, 0, NULL, 0); chSysLockFromIsr(); usbStartTransmitI(usbp, 0); chSysUnlockFromIsr(); usbp->ep0state = USB_EP0_WAITING_TX0; return; } /* Falls into, it is intentional.*/ case USB_EP0_WAITING_TX0: /* Transmit phase over, receiving the zero sized status packet.*/ usbp->ep0state = USB_EP0_WAITING_STS; usbPrepareReceive(usbp, 0, NULL, 0); chSysLockFromIsr(); usbStartReceiveI(usbp, 0); chSysUnlockFromIsr(); return; case USB_EP0_SENDING_STS: /* Status packet sent, invoking the callback if defined.*/ if (usbp->ep0endcb != NULL) usbp->ep0endcb(usbp); usbp->ep0state = USB_EP0_WAITING_SETUP; return; default: ; } /* Error response, the state machine goes into an error state, the low level layer will have to reset it to USB_EP0_WAITING_SETUP after receiving a SETUP packet.*/ usb_lld_stall_in(usbp, 0); usb_lld_stall_out(usbp, 0); _usb_isr_invoke_event_cb(usbp, USB_EVENT_STALLED); usbp->ep0state = USB_EP0_ERROR; }
/** * @brief Standard requests handler. * @details This is the standard requests default handler, most standard * requests are handled here, the user can override the standard * handling using the @p requests_hook_cb hook in the * @p USBConfig structure. * * @param[in] usbp pointer to the @p USBDriver object * @return The request handling exit code. * @retval false Request not recognized by the handler or error. * @retval true Request handled. */ static bool default_handler(USBDriver *usbp) { const USBDescriptor *dp; /* Decoding the request.*/ switch (((usbp->setup[0] & (USB_RTYPE_RECIPIENT_MASK | USB_RTYPE_TYPE_MASK)) | (usbp->setup[1] << 8))) { case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_STATUS << 8): /* Just returns the current status word.*/ usbSetupTransfer(usbp, (uint8_t *)&usbp->status, 2, NULL); return true; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_CLEAR_FEATURE << 8): /* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature number is handled as an error.*/ if (usbp->setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) { usbp->status &= ~2; usbSetupTransfer(usbp, NULL, 0, NULL); return true; } return false; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_FEATURE << 8): /* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature number is handled as an error.*/ if (usbp->setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) { usbp->status |= 2; usbSetupTransfer(usbp, NULL, 0, NULL); return true; } return false; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_ADDRESS << 8): /* The SET_ADDRESS handling can be performed here or postponed after the status packed depending on the USB_SET_ADDRESS_MODE low driver setting.*/ #if USB_SET_ADDRESS_MODE == USB_EARLY_SET_ADDRESS if ((usbp->setup[0] == USB_RTYPE_RECIPIENT_DEVICE) && (usbp->setup[1] == USB_REQ_SET_ADDRESS)) set_address(usbp); usbSetupTransfer(usbp, NULL, 0, NULL); #else usbSetupTransfer(usbp, NULL, 0, set_address); #endif return true; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_DESCRIPTOR << 8): /* Handling descriptor requests from the host.*/ dp = usbp->config->get_descriptor_cb( usbp, usbp->setup[3], usbp->setup[2], usbFetchWord(&usbp->setup[4])); if (dp == NULL) return false; usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size, NULL); return true; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_CONFIGURATION << 8): /* Returning the last selected configuration.*/ usbSetupTransfer(usbp, &usbp->configuration, 1, NULL); return true; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_CONFIGURATION << 8): /* Handling configuration selection from the host.*/ usbp->configuration = usbp->setup[2]; if (usbp->configuration == 0) usbp->state = USB_SELECTED; else usbp->state = USB_ACTIVE; _usb_isr_invoke_event_cb(usbp, USB_EVENT_CONFIGURED); usbSetupTransfer(usbp, NULL, 0, NULL); return true; case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_GET_STATUS << 8): case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_SYNCH_FRAME << 8): /* Just sending two zero bytes, the application can change the behavior using a hook..*/ usbSetupTransfer(usbp, (uint8_t *)zero_status, 2, NULL); return true; case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_GET_STATUS << 8): /* Sending the EP status.*/ if (usbp->setup[4] & 0x80) { switch (usb_lld_get_status_in(usbp, usbp->setup[4] & 0x0F)) { case EP_STATUS_STALLED: usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL); return true; case EP_STATUS_ACTIVE: usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL); return true; default: return false; } } else { switch (usb_lld_get_status_out(usbp, usbp->setup[4] & 0x0F)) { case EP_STATUS_STALLED: usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL); return true; case EP_STATUS_ACTIVE: usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL); return true; default: return false; } } case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_CLEAR_FEATURE << 8): /* Only ENDPOINT_HALT is handled as feature.*/ if (usbp->setup[2] != USB_FEATURE_ENDPOINT_HALT) return false; /* Clearing the EP status, not valid for EP0, it is ignored in that case.*/ if ((usbp->setup[4] & 0x0F) > 0) { if (usbp->setup[4] & 0x80) usb_lld_clear_in(usbp, usbp->setup[4] & 0x0F); else usb_lld_clear_out(usbp, usbp->setup[4] & 0x0F); } usbSetupTransfer(usbp, NULL, 0, NULL); return true; case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_SET_FEATURE << 8): /* Only ENDPOINT_HALT is handled as feature.*/ if (usbp->setup[2] != USB_FEATURE_ENDPOINT_HALT) return false; /* Stalling the EP, not valid for EP0, it is ignored in that case.*/ if ((usbp->setup[4] & 0x0F) > 0) { if (usbp->setup[4] & 0x80) usb_lld_stall_in(usbp, usbp->setup[4] & 0x0F); else usb_lld_stall_out(usbp, usbp->setup[4] & 0x0F); } usbSetupTransfer(usbp, NULL, 0, NULL); return true; case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_DESCRIPTOR << 8): case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_CLEAR_FEATURE << 8): case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_SET_FEATURE << 8): case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_GET_INTERFACE << 8): case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_SET_INTERFACE << 8): /* All the above requests are not handled here, if you need them then use the hook mechanism and provide handling.*/ default: return false; } }
/** * @brief Default EP0 SETUP callback. * @details This function is used by the low level driver as default handler * for EP0 SETUP events. * * @param[in] usbp pointer to the @p USBDriver object * @param[in] ep endpoint number, always zero * * @notapi */ void _usb_ep0setup(USBDriver *usbp, usbep_t ep) { size_t max; usbp->ep0state = USB_EP0_WAITING_SETUP; usbReadSetup(usbp, ep, usbp->setup); /* First verify if the application has an handler installed for this request.*/ if (!(usbp->config->requests_hook_cb) || !(usbp->config->requests_hook_cb(usbp))) { /* Invoking the default handler, if this fails then stalls the endpoint zero as error.*/ if (((usbp->setup[0] & USB_RTYPE_TYPE_MASK) != USB_RTYPE_TYPE_STD) || !default_handler(usbp)) { /* Error response, the state machine goes into an error state, the low level layer will have to reset it to USB_EP0_WAITING_SETUP after receiving a SETUP packet.*/ usb_lld_stall_in(usbp, 0); usb_lld_stall_out(usbp, 0); _usb_isr_invoke_event_cb(usbp, USB_EVENT_STALLED); usbp->ep0state = USB_EP0_ERROR; return; } } #if (USB_SET_ADDRESS_ACK_HANDLING == USB_SET_ADDRESS_ACK_HW) if (usbp->setup[1] == USB_REQ_SET_ADDRESS) { /* Zero-length packet sent by hardware */ return; } #endif /* Transfer preparation. The request handler must have populated correctly the fields ep0next, ep0n and ep0endcb using the macro usbSetupTransfer().*/ max = usbFetchWord(&usbp->setup[6]); /* The transfer size cannot exceed the specified amount.*/ if (usbp->ep0n > max) usbp->ep0n = max; if ((usbp->setup[0] & USB_RTYPE_DIR_MASK) == USB_RTYPE_DIR_DEV2HOST) { /* IN phase.*/ if (usbp->ep0n > 0) { /* Starts the transmit phase.*/ usbp->ep0state = USB_EP0_TX; usbPrepareTransmit(usbp, 0, usbp->ep0next, usbp->ep0n); osalSysLockFromISR(); usbStartTransmitI(usbp, 0); osalSysUnlockFromISR(); } else { /* No transmission phase, directly receiving the zero sized status packet.*/ usbp->ep0state = USB_EP0_WAITING_STS; #if (USB_EP0_STATUS_STAGE == USB_EP0_STATUS_STAGE_SW) usbPrepareReceive(usbp, 0, NULL, 0); osalSysLockFromISR(); usbStartReceiveI(usbp, 0); osalSysUnlockFromISR(); #else usb_lld_end_setup(usbp, ep); #endif } } else { /* OUT phase.*/ if (usbp->ep0n > 0) { /* Starts the receive phase.*/ usbp->ep0state = USB_EP0_RX; usbPrepareReceive(usbp, 0, usbp->ep0next, usbp->ep0n); osalSysLockFromISR(); usbStartReceiveI(usbp, 0); osalSysUnlockFromISR(); } else { /* No receive phase, directly sending the zero sized status packet.*/ usbp->ep0state = USB_EP0_SENDING_STS; #if (USB_EP0_STATUS_STAGE == USB_EP0_STATUS_STAGE_SW) usbPrepareTransmit(usbp, 0, NULL, 0); osalSysLockFromISR(); usbStartTransmitI(usbp, 0); osalSysUnlockFromISR(); #else usb_lld_end_setup(usbp, ep); #endif } } }
/** * @brief Standard requests handler. * @details This is the standard requests default handler, most standard * requests are handled here, the user can override the standard * handling using the @p requests_hook_cb hook in the * @p USBConfig structure. * * @param[in] usbp pointer to the @p USBDriver object * @return The request handling exit code. * @retval false Request not recognized by the handler or error. * @retval true Request handled. */ static bool default_handler(USBDriver *usbp) { const USBDescriptor *dp; /* Decoding the request.*/ switch ((((uint32_t)usbp->setup[0] & (USB_RTYPE_RECIPIENT_MASK | USB_RTYPE_TYPE_MASK)) | ((uint32_t)usbp->setup[1] << 8U))) { case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_GET_STATUS << 8): /* Just returns the current status word.*/ usbSetupTransfer(usbp, (uint8_t *)&usbp->status, 2, NULL); return true; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_CLEAR_FEATURE << 8): /* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature number is handled as an error.*/ if (usbp->setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) { usbp->status &= ~2U; usbSetupTransfer(usbp, NULL, 0, NULL); return true; } return false; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_SET_FEATURE << 8): /* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature number is handled as an error.*/ if (usbp->setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) { usbp->status |= 2U; usbSetupTransfer(usbp, NULL, 0, NULL); return true; } return false; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_SET_ADDRESS << 8): /* The SET_ADDRESS handling can be performed here or postponed after the status packed depending on the USB_SET_ADDRESS_MODE low driver setting.*/ #if USB_SET_ADDRESS_MODE == USB_EARLY_SET_ADDRESS if ((usbp->setup[0] == USB_RTYPE_RECIPIENT_DEVICE) && (usbp->setup[1] == USB_REQ_SET_ADDRESS)) { set_address(usbp); } usbSetupTransfer(usbp, NULL, 0, NULL); #else usbSetupTransfer(usbp, NULL, 0, set_address); #endif return true; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_GET_DESCRIPTOR << 8): /* Handling descriptor requests from the host.*/ dp = usbp->config->get_descriptor_cb(usbp, usbp->setup[3], usbp->setup[2], get_hword(&usbp->setup[4])); if (dp == NULL) { return false; } /*lint -save -e9005 [11.8] Removing const is fine.*/ usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size, NULL); /*lint -restore*/ return true; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_GET_CONFIGURATION << 8): /* Returning the last selected configuration.*/ usbSetupTransfer(usbp, &usbp->configuration, 1, NULL); return true; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_SET_CONFIGURATION << 8): /* Handling configuration selection from the host only if it is different from the current configuration.*/ if (usbp->configuration != usbp->setup[2]) { /* If the USB device is already active then we have to perform the clear procedure on the current configuration.*/ if (usbp->state == USB_ACTIVE) { /* Current configuration cleared.*/ osalSysLockFromISR (); usbDisableEndpointsI(usbp); osalSysUnlockFromISR (); usbp->configuration = 0U; usbp->state = USB_SELECTED; _usb_isr_invoke_event_cb(usbp, USB_EVENT_UNCONFIGURED); } if (usbp->setup[2] != 0U) { /* New configuration.*/ usbp->configuration = usbp->setup[2]; usbp->state = USB_ACTIVE; _usb_isr_invoke_event_cb(usbp, USB_EVENT_CONFIGURED); } } usbSetupTransfer(usbp, NULL, 0, NULL); return true; case (uint32_t)USB_RTYPE_RECIPIENT_INTERFACE | ((uint32_t)USB_REQ_GET_STATUS << 8): case (uint32_t)USB_RTYPE_RECIPIENT_ENDPOINT | ((uint32_t)USB_REQ_SYNCH_FRAME << 8): /* Just sending two zero bytes, the application can change the behavior using a hook..*/ /*lint -save -e9005 [11.8] Removing const is fine.*/ usbSetupTransfer(usbp, (uint8_t *)zero_status, 2, NULL); /*lint -restore*/ return true; case (uint32_t)USB_RTYPE_RECIPIENT_ENDPOINT | ((uint32_t)USB_REQ_GET_STATUS << 8): /* Sending the EP status.*/ if ((usbp->setup[4] & 0x80U) != 0U) { switch (usb_lld_get_status_in(usbp, usbp->setup[4] & 0x0FU)) { case EP_STATUS_STALLED: /*lint -save -e9005 [11.8] Removing const is fine.*/ usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL); /*lint -restore*/ return true; case EP_STATUS_ACTIVE: /*lint -save -e9005 [11.8] Removing const is fine.*/ usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL); /*lint -restore*/ return true; case EP_STATUS_DISABLED: default: return false; } } else { switch (usb_lld_get_status_out(usbp, usbp->setup[4] & 0x0FU)) { case EP_STATUS_STALLED: /*lint -save -e9005 [11.8] Removing const is fine.*/ usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL); /*lint -restore*/ return true; case EP_STATUS_ACTIVE: /*lint -save -e9005 [11.8] Removing const is fine.*/ usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL); /*lint -restore*/ return true; case EP_STATUS_DISABLED: default: return false; } } case (uint32_t)USB_RTYPE_RECIPIENT_ENDPOINT | ((uint32_t)USB_REQ_CLEAR_FEATURE << 8): /* Only ENDPOINT_HALT is handled as feature.*/ if (usbp->setup[2] != USB_FEATURE_ENDPOINT_HALT) { return false; } /* Clearing the EP status, not valid for EP0, it is ignored in that case.*/ if ((usbp->setup[4] & 0x0FU) != 0U) { if ((usbp->setup[4] & 0x80U) != 0U) { usb_lld_clear_in(usbp, usbp->setup[4] & 0x0FU); } else { usb_lld_clear_out(usbp, usbp->setup[4] & 0x0FU); } } usbSetupTransfer(usbp, NULL, 0, NULL); return true; case (uint32_t)USB_RTYPE_RECIPIENT_ENDPOINT | ((uint32_t)USB_REQ_SET_FEATURE << 8): /* Only ENDPOINT_HALT is handled as feature.*/ if (usbp->setup[2] != USB_FEATURE_ENDPOINT_HALT) { return false; } /* Stalling the EP, not valid for EP0, it is ignored in that case.*/ if ((usbp->setup[4] & 0x0FU) != 0U) { if ((usbp->setup[4] & 0x80U) != 0U) { usb_lld_stall_in(usbp, usbp->setup[4] & 0x0FU); } else { usb_lld_stall_out(usbp, usbp->setup[4] & 0x0FU); } } usbSetupTransfer(usbp, NULL, 0, NULL); return true; case (uint32_t)USB_RTYPE_RECIPIENT_DEVICE | ((uint32_t)USB_REQ_SET_DESCRIPTOR << 8): case (uint32_t)USB_RTYPE_RECIPIENT_INTERFACE | ((uint32_t)USB_REQ_CLEAR_FEATURE << 8): case (uint32_t)USB_RTYPE_RECIPIENT_INTERFACE | ((uint32_t)USB_REQ_SET_FEATURE << 8): case (uint32_t)USB_RTYPE_RECIPIENT_INTERFACE | ((uint32_t)USB_REQ_GET_INTERFACE << 8): case (uint32_t)USB_RTYPE_RECIPIENT_INTERFACE | ((uint32_t)USB_REQ_SET_INTERFACE << 8): /* All the above requests are not handled here, if you need them then use the hook mechanism and provide handling.*/ default: return false; } }