Martin Kojtal
a
Fork of
USBDevice
by 
mbed official
Diff: USBDevice/TARGET_Silicon_Labs/src/em_usbdep.c
- Revision:
- 71:53949e6131f6
- Parent:
- 70:2c525a50f1b6
--- a/USBDevice/TARGET_Silicon_Labs/src/em_usbdep.c Thu Jul 20 10:14:36 2017 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,446 +0,0 @@
-/**************************************************************************//**
- * @file em_usbdep.c
- * @brief USB protocol stack library, USB device endpoint handlers.
- * @version 3.20.14
- ******************************************************************************
- * @section License
- * <b>(C) Copyright 2014 Silicon Labs, http://www.silabs.com</b>
- *******************************************************************************
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- ******************************************************************************/
-
-#include "em_device.h"
-#if defined( USB_PRESENT ) && ( USB_COUNT == 1 )
-#include "em_usb.h"
-#if defined( USB_DEVICE )
-
-#include "em_usbtypes.h"
-#include "em_usbhal.h"
-#include "em_usbd.h"
-
-#ifdef USB_USE_PRINTF
-static const char *epStatusStr[] = {
- "IDLE","TRANS","RECV","IN_S","OUT_S"
-};
-#endif
-
-/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */
-
-/*
- * USBDEP_Ep0Handler() is called each time a packet has been transmitted
- * or recieved on the default endpoint.
- * A state machine navigate us through the phases of a control transfer
- * according to "chapter 9" in the USB spec.
- */
-#if !defined( USB_DOEP0INT_STUPPKTRCVD )
-void USBDEP_Ep0Handler( USBD_Device_TypeDef *device )
-{
- int status;
- USBD_Ep_TypeDef *ep;
- static bool statusIn;
- static uint32_t xferred;
- static USB_XferCompleteCb_TypeDef callback;
-
- ep = &device->ep[ 0 ];
-
-#ifdef __MBED__
-
- (void)xferred;
- (void)statusIn;
- (void)status;
-
- USB_PRINTF("USBDEP: ep0 %s, rem %ld, z %d\n", epStatusStr[ep->state], ep->remaining, ep->zlp);
-
- if ( ( ep->state == D_EP_TRANSMITTING ) || ( ep->state == D_EP_RECEIVING ) )
- {
- ep->state = D_EP_IDLE;
-
- if ( ep->xferCompleteCb )
- {
- callback = ep->xferCompleteCb;
- ep->xferCompleteCb = NULL;
- callback( USB_STATUS_OK, ep->xferred, ep->remaining );
- }
-
- USBDHAL_ReenableEp0Setup(device);
- }
- else
- {
- device->callbacks->setupCmd(device->setup);
- }
-
-#else /* not __MBED__ */
-
- switch ( ep->state )
- {
- case D_EP_IDLE:
- ep->remaining = 0;
- ep->zlp = 0;
- callback = NULL;
- statusIn = false;
-
- status = USBDCH9_SetupCmd( device );
-
- if ( status == USB_STATUS_REQ_ERR )
- {
- ep->in = true;
- USBDHAL_StallEp( ep ); /* Stall Ep0 IN */
- ep->in = false; /* OUT for next SETUP */
- USBDHAL_StallEp( ep ); /* Stall Ep0 OUT */
- USBDHAL_ReenableEp0Setup( device ); /* Prepare for next SETUP packet*/
- }
- else /* ( Status == USB_STATUS_OK ) */
- {
- if ( (ep->state == D_EP_RECEIVING) || (ep->state == D_EP_TRANSMITTING) )
- {
- callback = ep->xferCompleteCb;
- }
-
- if ( ep->state != D_EP_RECEIVING )
- {
- if ( ep->remaining )
- {
- /* Data will be sent to host, check if a ZLP must be appended */
- if ( ( ep->remaining < device->setup->wLength ) &&
- ( ep->remaining % ep->packetSize == 0 ) )
- {
- ep->zlp = 1;
- }
- }
- else
- {
- /* Prepare for next SETUP packet*/
- USBDHAL_ReenableEp0Setup( device );
-
- /* No data stage, a ZLP may have been sent. If not, send one */
-
- xferred = 0;
- if ( ep->zlp == 0 )
- {
- USBD_Write( 0, NULL, 0, NULL ); /* ACK to host */
- ep->state = D_EP0_IN_STATUS;
- }
- else
- {
- ep->state = D_EP_IDLE;
- ep->in = false; /* OUT for next SETUP */
- }
- }
- }
- }
- break;
-
- case D_EP_RECEIVING:
- if ( ep->remaining )
- {
- /* There is more data to receive */
- USBD_ReArmEp0( ep );
- }
- else
- {
- status = USB_STATUS_OK;
- if ( callback != NULL )
- {
- status = callback( USB_STATUS_OK, ep->xferred, 0 );
- callback = NULL;
- }
-
- if ( status != USB_STATUS_OK )
- {
- ep->in = true;
- USBDHAL_StallEp( ep ); /* Stall Ep0 IN */
- ep->in = false; /* OUT for next SETUP */
- USBDHAL_StallEp( ep ); /* Stall Ep0 OUT */
- USBDHAL_ReenableEp0Setup( device ); /* Prepare for next SETUP pkt. */
- ep->state = D_EP_IDLE;
- }
- else /* Everything OK, send a ZLP (ACK) to host */
- {
- USBDHAL_ReenableEp0Setup( device );/* Prepare for next SETUP packet*/
-
- ep->state = D_EP_IDLE; /* USBD_Write() sets state back*/
- /* to EP_TRANSMITTING */
- USBD_Write( 0, NULL, 0, NULL );
- ep->state = D_EP0_IN_STATUS;
- }
- }
- break;
-
- case D_EP_TRANSMITTING:
- if ( ep->remaining )
- {
- /* There is more data to transmit */
- USBD_ReArmEp0( ep );
- }
- else
- {
- /* All data transferred, is a ZLP packet needed ? */
- if ( ep->zlp == 1 )
- {
- xferred = ep->xferred;
- ep->state = D_EP_IDLE; /* USBD_Write() sets state back */
- /* to EP_TRANSMITTING */
- USBD_Write( 0, NULL, 0, NULL ); /* Send ZLP */
- ep->zlp = 2;
- }
- else
- {
- if ( ep->zlp == 0 )
- {
- xferred = ep->xferred;
- }
-
- ep->state = D_EP_IDLE;
- USBD_Read( 0, NULL, 0, NULL ); /* Get ZLP packet (ACK) from host */
- statusIn = true;
- ep->state = D_EP0_OUT_STATUS;
- }
- }
- break;
-
- case D_EP0_IN_STATUS:
- case D_EP0_OUT_STATUS:
- if ( statusIn )
- {
- USBDHAL_ReenableEp0Setup( device );
- }
-
- if ( callback != NULL )
- {
- callback( USB_STATUS_OK, xferred, 0 );
- }
-
- ep->state = D_EP_IDLE;
- ep->in = false; /* OUT for next SETUP */
- break;
-
- default:
- EFM_ASSERT( false );
- break;
- }
-#endif /* __MBED__ */
-}
-#endif
-
-#if defined( USB_DOEP0INT_STUPPKTRCVD )
-void USBDEP_Ep0Handler( USBD_Device_TypeDef *device )
-{
- int status;
- USBD_Ep_TypeDef *ep;
- static uint32_t xferred;
- static USB_XferCompleteCb_TypeDef callback;
-
-#ifdef __MBED__
-
- (void)xferred;
- (void)status;
-
- ep = &device->ep[ 0 ];
-
- if ( ( ep->state == D_EP_TRANSMITTING ) || ( ep->state == D_EP_RECEIVING ) )
- {
- ep->state = D_EP_IDLE;
-
- if ( ep->xferCompleteCb )
- {
- callback = ep->xferCompleteCb;
- ep->xferCompleteCb = NULL;
- callback( USB_STATUS_OK, ep->xferred, ep->remaining );
- }
-
- USBDHAL_StartEp0Setup( dev );
- }
- else
- {
- device->callbacks->setupCmd(device->setup);
- }
-
-#else
-
- ep = &device->ep[ 0 ];
-
- switch ( ep->state )
- {
- case D_EP_IDLE:
- ep->zlp = 0;
- ep->remaining = 0;
- callback = NULL;
-
- status = USBDCH9_SetupCmd( device );
-
- if ( status == USB_STATUS_REQ_ERR )
- {
- ep->in = true;
- USBDHAL_StallEp( ep ); /* Stall Ep0 IN */
- ep->in = false; /* OUT for next SETUP */
- USBDHAL_StallEp( ep ); /* Stall Ep0 OUT */
- USBDHAL_StartEp0Setup( dev ); /* Prepare for next SETUP packet*/
- }
- else /* ( Status == USB_STATUS_OK ) */
- {
- if ( (ep->state == D_EP_RECEIVING) || (ep->state == D_EP_TRANSMITTING) )
- {
- callback = ep->xferCompleteCb;
- }
-
- if ( ep->state != D_EP_RECEIVING )
- {
- if ( ep->remaining )
- {
- /* Data will be sent to host, check if a ZLP must be appended */
- if ( ( ep->remaining < device->setup->wLength ) &&
- ( ep->remaining % ep->packetSize == 0 ) )
- {
- ep->zlp = 1;
- }
- }
- else
- {
- /* No data stage, a ZLP may have been sent. If not, send one */
- xferred = 0;
- if ( ep->zlp == 0 )
- {
- ep->state = D_EP_IDLE;
- USBD_Write( 0, NULL, 0, NULL ); /* ACK to host */
- ep->state = D_EP0_IN_STATUS;
- }
- }
- }
- }
- break;
-
- case D_EP_RECEIVING:
- if ( ep->remaining )
- {
- ep->in = false;
- USBD_ReArmEp0( ep );
- }
- else
- {
- status = USB_STATUS_OK;
- if ( callback != NULL )
- {
- status = callback( USB_STATUS_OK, ep->xferred, 0 );
- callback = NULL;
- }
-
- if ( status != USB_STATUS_OK )
- {
- ep->in = true;
- USBDHAL_StallEp( ep ); /* Stall Ep0 IN */
- ep->in = false; /* OUT for next SETUP */
- USBDHAL_StallEp( ep ); /* Stall Ep0 OUT */
- USBDHAL_StartEp0Setup( dev ); /* Prepare for next SETUP pkt. */
- ep->state = D_EP_IDLE;
- }
- else
- {
-
- USBDHAL_StartEp0Setup( dev ); /* Prepare for next SETUP packet*/
- ep->state = D_EP_IDLE; /* USBD_Write() sets state back */
- /* to EP_TRANSMITTING */
- USBD_Write( 0, NULL, 0, NULL );
- ep->state = D_EP0_IN_STATUS;
- }
- }
- break;
-
- case D_EP_TRANSMITTING:
- if ( ep->remaining )
- {
- ep->in = true;
- USBD_ReArmEp0( ep );
- }
- else
- {
- if ( ep->zlp == 1 )
- {
- xferred = ep->xferred;
- ep->state = D_EP_IDLE; /* USBD_Write() sets state back */
- /* to EP_TRANSMITTING */
- USBD_Write( 0, NULL, 0, NULL ); /* Send ZLP */
- ep->zlp = 2;
- }
- else
- {
- if ( ep->zlp == 0 )
- {
- xferred = ep->xferred;
- }
-
- ep->state = D_EP_IDLE;
- USBD_Read( 0, NULL, 0, NULL ); /* Get ZLP packet (ACK) from host */
- ep->state = D_EP0_OUT_STATUS;
- }
- }
- break;
-
- case D_EP0_IN_STATUS:
- if ( ( USB->DOEP0CTL & USB_DOEP0CTL_EPENA ) == 0 )
- {
- /* Prepare for more SETUP Packets */
- USBDHAL_StartEp0Setup( dev );
- }
- if ( callback != NULL )
- {
- callback( USB_STATUS_OK, xferred, 0 );
- }
- ep->state = D_EP_IDLE;
- ep->in = false; /* OUT for next SETUP */
- break;
-
- case D_EP0_OUT_STATUS:
- USBDHAL_StartEp0Setup( dev ); /* Prepare for more SETUP Packets */
- if ( callback != NULL )
- {
- callback( USB_STATUS_OK, xferred, 0 );
- }
- ep->state = D_EP_IDLE;
- ep->in = false; /* OUT for next SETUP */
- break;
- }
-#endif /* __MBED__ */
-}
-#endif
-
-/*
- * USBDEP_EpHandler() is called each time a packet has been transmitted
- * or recieved on an endpoint other than the default endpoint.
- */
-void USBDEP_EpHandler( uint8_t epAddr )
-{
- USB_XferCompleteCb_TypeDef callback;
- USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
-
- if ( ( ep->state == D_EP_TRANSMITTING ) || ( ep->state == D_EP_RECEIVING ) )
- {
- ep->state = D_EP_IDLE;
- if ( ep->xferCompleteCb )
- {
- callback = ep->xferCompleteCb;
- ep->xferCompleteCb = NULL;
- callback( USB_STATUS_OK, ep->xferred, ep->remaining );
- }
- }
- else
- {
- EFM_ASSERT( false );
- }
-}
-
-/** @endcond */
-
-#endif /* defined( USB_DEVICE ) */
-#endif /* defined( USB_PRESENT ) && ( USB_COUNT == 1 ) */