Release 6.1.6v6.1.6_rel

10 files changed, 161 insertions, 28 deletions

diff --git a/common/core/src/ux_dcd_sim_slave_endpoint_create.c b/common/core/src/ux_dcd_sim_slave_endpoint_create.c
index 912d5bf..e73c10f 100644
--- a/common/core/src/ux_dcd_sim_slave_endpoint_create.c
+++ b/common/core/src/ux_dcd_sim_slave_endpoint_create.c
@@ -34,7 +34,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_dcd_sim_slave_endpoint_create                   PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -67,6 +67,9 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            supported bi-dir-endpoints, */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_dcd_sim_slave_endpoint_create(UX_DCD_SIM_SLAVE *dcd_sim_slave, UX_SLAVE_ENDPOINT *endpoint)
@@ -79,9 +82,17 @@ ULONG                   sim_slave_endpoint_index;
     /* The simulator slave controller has 16 endpoints maximum. Endpoint 0 is always control. 
        The other endpoints are generic. We can use the endpoint number as an index.  */
     sim_slave_endpoint_index =  endpoint ->ux_slave_endpoint_descriptor.bEndpointAddress & ~(ULONG)UX_ENDPOINT_DIRECTION;
-    
+
     /* Fetch the address of the physical endpoint.  */
+#ifdef UX_DEVICE_BIDIRECTIONAL_ENDPOINT_SUPPORT
+    ed = ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress == 0) ?
+            &dcd_sim_slave -> ux_dcd_sim_slave_ed[0] :
+            ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) ?
+                &dcd_sim_slave -> ux_dcd_sim_slave_ed_in[sim_slave_endpoint_index] :
+                &dcd_sim_slave -> ux_dcd_sim_slave_ed[sim_slave_endpoint_index]));
+#else
     ed =  &dcd_sim_slave -> ux_dcd_sim_slave_ed[sim_slave_endpoint_index];
+#endif
 
     /* Check the endpoint status, if it is free, reserve it. If not reject this endpoint.  */
     if ((ed -> ux_sim_slave_ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_USED) == 0)
diff --git a/common/core/src/ux_dcd_sim_slave_endpoint_status.c b/common/core/src/ux_dcd_sim_slave_endpoint_status.c
index a8b5c69..eec691a 100644
--- a/common/core/src/ux_dcd_sim_slave_endpoint_status.c
+++ b/common/core/src/ux_dcd_sim_slave_endpoint_status.c
@@ -34,7 +34,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_dcd_sim_slave_endpoint_status                   PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -67,6 +67,9 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            supported bi-dir-endpoints, */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_dcd_sim_slave_endpoint_status(UX_DCD_SIM_SLAVE *dcd_sim_slave, ULONG endpoint_index)
@@ -75,8 +78,20 @@ UINT  _ux_dcd_sim_slave_endpoint_status(UX_DCD_SIM_SLAVE *dcd_sim_slave, ULONG e
 UX_DCD_SIM_SLAVE_ED     *ed;
 
 
+#ifdef UX_DEVICE_BIDIRECTIONAL_ENDPOINT_SUPPORT
+ULONG                   ed_addr =  endpoint_index; /* Passed value as endpoint address.  */
+ULONG                   ed_dir  =  ed_addr & UX_ENDPOINT_DIRECTION;
+ULONG                   ed_index = ed_addr & ~UX_ENDPOINT_DIRECTION;
+
+    /* Fetch the address of the physical endpoint.  */
+    ed = ((ed_addr == 0) ? &dcd_sim_slave -> ux_dcd_sim_slave_ed[0] :
+            ((ed_dir) ? &dcd_sim_slave -> ux_dcd_sim_slave_ed_in[ed_index] :
+                        &dcd_sim_slave -> ux_dcd_sim_slave_ed[ed_index]));
+#else
+
     /* Fetch the address of the physical endpoint.  */
     ed =  &dcd_sim_slave -> ux_dcd_sim_slave_ed[endpoint_index];
+#endif
 
     /* Check the endpoint status, if it is free, we have a illegal endpoint.  */
     if ((ed -> ux_sim_slave_ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_USED) == 0)
diff --git a/common/core/src/ux_dcd_sim_slave_initialize.c b/common/core/src/ux_dcd_sim_slave_initialize.c
index febc3bf..7af4aa3 100644
--- a/common/core/src/ux_dcd_sim_slave_initialize.c
+++ b/common/core/src/ux_dcd_sim_slave_initialize.c
@@ -27,6 +27,7 @@
 
 #include "ux_api.h"
 #include "ux_dcd_sim_slave.h"
+#include "ux_hcd_sim_host.h"
 
 
 /**************************************************************************/
@@ -34,7 +35,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_dcd_sim_slave_initialize                        PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -66,6 +67,10 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            added link with HCD,        */
+/*                                            set device to full speed,   */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_dcd_sim_slave_initialize(VOID)
@@ -73,6 +78,7 @@ UINT  _ux_dcd_sim_slave_initialize(VOID)
 
 UX_SLAVE_DCD            *dcd;
 UX_DCD_SIM_SLAVE        *dcd_sim_slave;
+UX_HCD                  *hcd;
 
                                                                             
     /* Get the pointer to the DCD.  */
@@ -97,6 +103,19 @@ UX_DCD_SIM_SLAVE        *dcd_sim_slave;
     /* Initialize the function collector for this DCD.  */
     dcd -> ux_slave_dcd_function =  _ux_dcd_sim_slave_function;
 
+    /* Link the HCD (always first registered one) to DCD driver.  */
+    if (_ux_system_host)
+    {
+        hcd = _ux_system_host -> ux_system_host_hcd_array;
+        if (hcd)
+        {
+            dcd_sim_slave -> ux_dcd_sim_slave_hcd = (VOID *)hcd;
+        }
+    }
+
+    /* Set system to full speed by default.  */
+    _ux_system_slave -> ux_system_slave_speed = UX_FULL_SPEED_DEVICE;
+
     /* Set the state of the controller to OPERATIONAL now.  */
     dcd -> ux_slave_dcd_status =  UX_DCD_STATUS_OPERATIONAL;
 
diff --git a/common/core/src/ux_dcd_sim_slave_initialize_complete.c b/common/core/src/ux_dcd_sim_slave_initialize_complete.c
index 820dad5..f2d0dca 100644
--- a/common/core/src/ux_dcd_sim_slave_initialize_complete.c
+++ b/common/core/src/ux_dcd_sim_slave_initialize_complete.c
@@ -34,7 +34,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_dcd_sim_slave_initialize_complete               PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -69,6 +69,9 @@
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            prefixed UX to MS_TO_TICK,  */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            added framework init cases, */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_dcd_sim_slave_initialize_complete(VOID)
@@ -86,9 +89,22 @@ UX_SLAVE_TRANSFER       *transfer_request;
     /* Get the pointer to the device.  */
     device =  &_ux_system_slave -> ux_system_slave_device;
 
-    /* Slave simulator is a Full speed controller.  */
-    _ux_system_slave -> ux_system_slave_device_framework =  _ux_system_slave -> ux_system_slave_device_framework_full_speed;
-    _ux_system_slave -> ux_system_slave_device_framework_length =  _ux_system_slave -> ux_system_slave_device_framework_length_full_speed;
+    /* Prepare according to speed.  */
+    if (_ux_system_slave -> ux_system_slave_speed == UX_HIGH_SPEED_DEVICE)
+    {
+        _ux_system_slave -> ux_system_slave_device_framework =
+            _ux_system_slave -> ux_system_slave_device_framework_high_speed;
+        _ux_system_slave -> ux_system_slave_device_framework_length =
+            _ux_system_slave -> ux_system_slave_device_framework_length_high_speed;
+    }
+    else
+    {
+        _ux_system_slave -> ux_system_slave_device_framework =
+            _ux_system_slave -> ux_system_slave_device_framework_full_speed;
+        _ux_system_slave -> ux_system_slave_device_framework_length =
+            _ux_system_slave -> ux_system_slave_device_framework_length_full_speed;
+
+    }
 
     /* Get the device framework pointer.  */
     device_framework =  _ux_system_slave -> ux_system_slave_device_framework;
diff --git a/common/core/src/ux_dcd_sim_slave_state_change.c b/common/core/src/ux_dcd_sim_slave_state_change.c
index 4ed8e3c..0b0bf15 100644
--- a/common/core/src/ux_dcd_sim_slave_state_change.c
+++ b/common/core/src/ux_dcd_sim_slave_state_change.c
@@ -27,6 +27,7 @@
 
 #include "ux_api.h"
 #include "ux_dcd_sim_slave.h"
+#include "ux_hcd_sim_host.h"
 
 
 /**************************************************************************/
@@ -34,7 +35,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_dcd_sim_slave_state_change                      PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -68,14 +69,35 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            simulate force disconnect,  */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_dcd_sim_slave_state_change(UX_DCD_SIM_SLAVE *dcd_sim_slave, ULONG state)
 {
 
-    UX_PARAMETER_NOT_USED(dcd_sim_slave);
+UX_HCD              *hcd;
+
+
     UX_PARAMETER_NOT_USED(state);
 
+    if (state == UX_DEVICE_FORCE_DISCONNECT)
+    {
+
+        /* Simulate port detach & attach on host side.  */
+
+        /* Get HCD.  */
+        hcd = (UX_HCD *)dcd_sim_slave -> ux_dcd_sim_slave_hcd;
+
+        /* Something happened on this port. Signal it to the root hub thread.  */
+        if (hcd)
+        {
+            hcd -> ux_hcd_root_hub_signal[0] = 2;
+            _ux_utility_semaphore_put(&_ux_system_host -> ux_system_host_enum_semaphore);
+        }
+    }
+
     /* Nothing to do in simulation mode.  */
     return(UX_SUCCESS);         
 }
diff --git a/common/core/src/ux_device_stack_get_status.c b/common/core/src/ux_device_stack_get_status.c
index 8eb364d..73293f1 100644
--- a/common/core/src/ux_device_stack_get_status.c
+++ b/common/core/src/ux_device_stack_get_status.c
@@ -34,7 +34,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_device_stack_get_status                         PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -70,6 +70,9 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            supported bi-dir-endpoints, */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_device_stack_get_status(ULONG request_type, ULONG request_index, ULONG request_length)
@@ -143,9 +146,17 @@ ULONG                   data_length;
             
     case UX_REQUEST_TARGET_ENDPOINT:
 
+#ifndef UX_DEVICE_BIDIRECTIONAL_ENDPOINT_SUPPORT
+
         /* This feature returns the halt state of a specific endpoint.  The endpoint index
            is used to retrieve the endpoint container.  */
         status =  dcd -> ux_slave_dcd_function(dcd, UX_DCD_ENDPOINT_STATUS, (VOID *)(ALIGN_TYPE)(request_index & (UINT)~UX_ENDPOINT_DIRECTION));
+#else
+
+        /* This feature returns the halt state of a specific endpoint.  The endpoint address
+           is used to retrieve the endpoint container.  */
+        status =  dcd -> ux_slave_dcd_function(dcd, UX_DCD_ENDPOINT_STATUS, (VOID *)(ALIGN_TYPE)(request_index));
+#endif
 
         /* Check the status. We may have a unknown endpoint.  */
         if (status != UX_ERROR)
diff --git a/common/core/src/ux_device_stack_uninitialize.c b/common/core/src/ux_device_stack_uninitialize.c
index 71258ee..6d163e2 100644
--- a/common/core/src/ux_device_stack_uninitialize.c
+++ b/common/core/src/ux_device_stack_uninitialize.c
@@ -33,7 +33,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_device_stack_uninitialize                       PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -65,6 +65,10 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            fixed uninitialize in case  */
+/*                                            there is no EP except EP0,  */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_device_stack_uninitialize(VOID)
@@ -110,7 +114,8 @@ ULONG                           endpoints_found;
     }
 
     /* Free the endpoint pool address in the device container.  */
-    _ux_utility_memory_free(device -> ux_slave_device_endpoints_pool);
+    if (device -> ux_slave_device_endpoints_pool)
+        _ux_utility_memory_free(device -> ux_slave_device_endpoints_pool);
 
     /* Free memory for interface pool.  */
     _ux_utility_memory_free(device -> ux_slave_device_interfaces_pool);
diff --git a/common/core/src/ux_hcd_sim_host_initialize.c b/common/core/src/ux_hcd_sim_host_initialize.c
index c385e75..ed1cf88 100644
--- a/common/core/src/ux_hcd_sim_host_initialize.c
+++ b/common/core/src/ux_hcd_sim_host_initialize.c
@@ -27,6 +27,7 @@
 
 #include "ux_api.h"
 #include "ux_hcd_sim_host.h"
+#include "ux_dcd_sim_slave.h"
 
 
 /**************************************************************************/ 
@@ -34,7 +35,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _ux_hcd_sim_host_initialize                         PORTABLE C      */ 
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -74,11 +75,16 @@
 /*                                            instead of using them       */
 /*                                            directly,                   */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            added link with DCD,        */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_hcd_sim_host_initialize(UX_HCD *hcd)
 {
 
+UX_SLAVE_DCD        *dcd;
+UX_DCD_SIM_SLAVE    *dcd_sim_slave;
 UX_HCD_SIM_HOST     *hcd_sim_host;
 UINT                status;
 
@@ -176,11 +182,24 @@ UINT                status;
         return(status);
     }
 
+    /* Link the HCD to DCD driver.  */
+    if (_ux_system_slave)
+    {
+        dcd = &_ux_system_slave -> ux_system_slave_dcd;
+        if (dcd)
+        {
+            dcd_sim_slave = (UX_DCD_SIM_SLAVE *) dcd -> ux_slave_dcd_controller_hardware;
+            if (dcd_sim_slave)
+                dcd_sim_slave -> ux_dcd_sim_slave_hcd = (VOID *)hcd;
+        }
+    }
+
     /* Get the number of ports on the controller. The number of ports needs to be reflected both 
        for the generic HCD container and the local sim_host container. In the simulator,
        the number of ports is hardwired to 1 only.  */
     hcd -> ux_hcd_nb_root_hubs =  1;
     hcd_sim_host -> ux_hcd_sim_host_nb_root_hubs =  1;
+    hcd_sim_host -> ux_hcd_sim_host_port_status[0] = UX_PS_CCS | UX_PS_DS_FS;
 
     /* Something happened on this port. Signal it to the root hub thread.  */
     hcd -> ux_hcd_root_hub_signal[0] =  1;
diff --git a/common/core/src/ux_hcd_sim_host_port_status_get.c b/common/core/src/ux_hcd_sim_host_port_status_get.c
index 8c32526..8711e5f 100644
--- a/common/core/src/ux_hcd_sim_host_port_status_get.c
+++ b/common/core/src/ux_hcd_sim_host_port_status_get.c
@@ -34,7 +34,7 @@
 /*  FUNCTION                                               RELEASE        */ 
 /*                                                                        */ 
 /*    _ux_hcd_sim_host_port_status_get                    PORTABLE C      */ 
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -93,6 +93,9 @@
 /*  05-19-2020     Chaoqiong Xiao           Initial Version 6.0           */
 /*  09-30-2020     Chaoqiong Xiao           Modified comment(s),          */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            used changeable status,     */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 ULONG  _ux_hcd_sim_host_port_status_get(UX_HCD_SIM_HOST *hcd_sim_host, ULONG port_index)
@@ -114,12 +117,8 @@ ULONG       port_status;
         return(UX_PORT_INDEX_UNKNOWN);
     }
     
-    /* The port is valid, build the status mask for this port. This function
-       returns always returned a device connected.  */
-    port_status =  UX_PS_CCS;
-                                    
-    /* And this is a Full speed device.  */
-    port_status |=  UX_PS_DS_FS;
+    /* Returns current port status.  */
+    port_status = hcd_sim_host -> ux_hcd_sim_host_port_status[port_index];
 
     /* Return port status.  */
     return(port_status);            
diff --git a/common/core/src/ux_hcd_sim_host_transaction_schedule.c b/common/core/src/ux_hcd_sim_host_transaction_schedule.c
index 58e6127..023de41 100644
--- a/common/core/src/ux_hcd_sim_host_transaction_schedule.c
+++ b/common/core/src/ux_hcd_sim_host_transaction_schedule.c
@@ -36,7 +36,7 @@
 /*  FUNCTION                                               RELEASE        */
 /*                                                                        */
 /*    _ux_hcd_sim_host_transaction_schedule               PORTABLE C      */
-/*                                                           6.1          */
+/*                                                           6.1.6        */
 /*  AUTHOR                                                                */
 /*                                                                        */
 /*    Chaoqiong Xiao, Microsoft Corporation                               */
@@ -77,6 +77,10 @@
 /*                                            verified memset and memcpy  */
 /*                                            cases,                      */
 /*                                            resulting in version 6.1    */
+/*  04-02-2021     Chaoqiong Xiao           Modified comment(s),          */
+/*                                            fixed control OUT transfer, */
+/*                                            supported bi-dir-endpoints, */
+/*                                            resulting in version 6.1.6  */
 /*                                                                        */
 /**************************************************************************/
 UINT  _ux_hcd_sim_host_transaction_schedule(UX_HCD_SIM_HOST *hcd_sim_host, UX_HCD_SIM_HOST_ED *ed)
@@ -94,6 +98,7 @@ ULONG                   slave_transfer_remaining;
 UCHAR                   wake_host;
 UCHAR                   wake_slave;
 ULONG                   transaction_length;
+ULONG                   td_length;
 UX_SLAVE_TRANSFER       *slave_transfer_request;
 UX_TRANSFER             *transfer_request;
 ULONG                   endpoint_index;
@@ -124,7 +129,15 @@ UX_SLAVE_DCD            *dcd;
     dcd_sim_slave =  (UX_DCD_SIM_SLAVE *) dcd -> ux_slave_dcd_controller_hardware;
 
     /* Get the endpoint as seen from the device side.  */
+#ifdef UX_DEVICE_BIDIRECTIONAL_ENDPOINT_SUPPORT
+    slave_ed = ((endpoint -> ux_endpoint_descriptor.bEndpointAddress == 0) ?
+            &dcd_sim_slave -> ux_dcd_sim_slave_ed[0] :
+            ((endpoint -> ux_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) ?
+                &dcd_sim_slave -> ux_dcd_sim_slave_ed_in[endpoint_index] :
+                &dcd_sim_slave -> ux_dcd_sim_slave_ed[endpoint_index]));
+#else
     slave_ed =  &dcd_sim_slave -> ux_dcd_sim_slave_ed[endpoint_index];
+#endif
 
     /* Is this ED used?  */
     if ((slave_ed -> ux_sim_slave_ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_USED) == 0)
@@ -155,7 +168,8 @@ UX_SLAVE_DCD            *dcd;
         slave_transfer_request -> ux_slave_transfer_request_actual_length =  td -> ux_sim_host_td_length;
 
         /* Move the buffer from the host TD to the device TD.  */
-        _ux_utility_memory_copy(slave_transfer_request -> ux_slave_transfer_request_setup, td -> ux_sim_host_td_buffer,
+        _ux_utility_memory_copy(slave_transfer_request -> ux_slave_transfer_request_setup,
+                                td -> ux_sim_host_td_buffer,
                                 td -> ux_sim_host_td_length); /* Use case of memcpy is verified. */
 
         /* The setup phase never fails. We acknowledge the transfer code here by taking the TD out of the endpoint.  */
@@ -202,20 +216,22 @@ UX_SLAVE_DCD            *dcd;
                 {
 
                     /* Copy the amount of data in the td into the slave transaction buffer.  */
-                    _ux_utility_memory_copy(slave_transfer_request -> ux_slave_transfer_request_current_data_pointer, data_td -> ux_sim_host_td_buffer,
-                                    data_td -> ux_sim_host_td_length); /* Use case of memcpy is verified. */
+                    td_length = UX_MIN(data_td -> ux_sim_host_td_length, transaction_length);
+                    _ux_utility_memory_copy(slave_transfer_request -> ux_slave_transfer_request_current_data_pointer,
+                                            data_td -> ux_sim_host_td_buffer,
+                                            td_length); /* Use case of memcpy is verified. */
 
                     /* Add to the actual payload length.  */
-                    slave_transfer_request -> ux_slave_transfer_request_actual_length += data_td -> ux_sim_host_td_length;
+                    slave_transfer_request -> ux_slave_transfer_request_actual_length += td_length;
 
                     /* Update the host transfer's actual length. */
                     transfer_request -> ux_transfer_request_actual_length +=  transaction_length;
 
                     /* Decrement the total length.  */
-                    transaction_length -= data_td -> ux_sim_host_td_length;
+                    transaction_length -= td_length;
 
                     /* Update buffer pointer.  */
-                    slave_transfer_request -> ux_slave_transfer_request_current_data_pointer += data_td -> ux_sim_host_td_length;
+                    slave_transfer_request -> ux_slave_transfer_request_current_data_pointer += td_length;
 
                     /* Update the td in the head.  */
                     ed -> ux_sim_host_ed_head_td =  data_td;