Downstream HID SPI interface done, untested.

Downstream/Inc/downstream_hid.h

@@ -0,0 +1,31 @@
+/*
+ * downstream_hid.h
+ *
+ *  Created on: Apr 10, 2016
+ *      Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_DOWNSTREAM_HID_H_
+#define INC_DOWNSTREAM_HID_H_
+
+
+#include "downstream_interface_def.h"
+#include "downstream_spi.h"
+
+
+#define HID_MOUSE_TRANSFER_BYTES        5
+#define HID_KEYBOARD_TRANSFER_BYTES     0
+
+
+
+InterfaceCommandClassTypeDef Downstream_HID_ApproveConnectedDevice(void);
+void Downstream_HID_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
+void Downstream_HID_InterruptReportCallback(DownstreamPacketTypeDef* packetToSend);
+
+
+
+#endif /* INC_DOWNSTREAM_HID_H_ */

Downstream/Inc/downstream_interface_def.h

@@ -30,6 +30,7 @@ typedef enum
     COMMAND_CLASS_INTERFACE,
     COMMAND_CLASS_MASS_STORAGE,
     COMMAND_CLASS_HID_MOUSE,
+    COMMAND_CLASS_HID_KEYBOARD,
     //...
     COMMAND_CLASS_ERROR
 }

Downstream/Inc/downstream_msc.h

@@ -13,6 +13,7 @@
 #define INC_DOWNSTREAM_MSC_H_
 
 
+#include "downstream_interface_def.h"
 #include "downstream_spi.h"
 
 
@@ -24,7 +25,7 @@ typedef void (*DownstreamMSCCallbackPacketTypeDef)(DownstreamPacketTypeDef* rece
                                                    uint16_t dataLength8);
 
 
-HAL_StatusTypeDef Downstream_MSC_ApproveConnectedDevice(void);
+InterfaceCommandClassTypeDef Downstream_MSC_ApproveConnectedDevice(void);
 void Downstream_MSC_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
 HAL_StatusTypeDef Downstream_MSC_PutStreamDataPacket(DownstreamPacketTypeDef* packetToSend,
                                                      uint32_t dataLength8);

Downstream/Middlewares/ST/STM32_USB_Host_Library/Class/HID/Inc/usbh_hid.h

@@ -35,8 +35,8 @@
 
 /* Includes ------------------------------------------------------------------*/
 #include "usbh_core.h"
-//#include "usbh_hid_mouse.h"
+#include "downstream_spi.h"
-//#include "usbh_hid_keybd.h"
+
  
 /** @addtogroup USBH_LIB
   * @{
@@ -112,8 +112,6 @@ typedef enum
 {
   HID_INIT= 0,  
   HID_IDLE,
-//  HID_SEND_DATA,
-//  HID_BUSY,
   HID_GET_DATA,   
   HID_SYNC,     
   HID_POLL,
@@ -212,27 +210,32 @@ typedef struct
 } FIFO_TypeDef;
 
 
+
+typedef void (*HID_InterruptReportCallback)(DownstreamPacketTypeDef* packetToSend);
+
+
 /* Structure for HID process */
 typedef struct _HID_Process
 {
   uint8_t              OutPipe; 
   uint8_t              InPipe; 
-  HID_StateTypeDef     state; 
   uint8_t              OutEp;
   uint8_t              InEp;
+  HID_StateTypeDef     state;
   HID_CtlStateTypeDef  ctl_state;
-  FIFO_TypeDef         fifo; 
-  uint8_t              *pData;   
   uint16_t             length;
-  uint8_t              ep_addr;
   uint16_t             poll; 
   uint32_t             timer;
-//  uint8_t              DataReady;
+  uint8_t              ep_addr;
+  uint8_t              Protocol;
   HID_DescTypeDef      HID_Desc;
-  //USBH_StatusTypeDef  ( * Init)(USBH_HandleTypeDef *phost);
+  HID_InterruptReportCallback   ReportCallback;
+  DownstreamPacketTypeDef*      hid_packet;
+  uint8_t*                      hid_packet_pbuf;
 }
 HID_HandleTypeDef;
 
+
 /**
   * @}
   */ 
@@ -321,6 +324,11 @@ uint16_t  fifo_read(FIFO_TypeDef * f, void * buf, uint16_t  nbytes);
 
 uint16_t  fifo_write(FIFO_TypeDef * f, const void * buf, uint16_t  nbytes);
 
+HAL_StatusTypeDef USBH_HID_GetInterruptReport(USBH_HandleTypeDef *phost,
+                                              HID_InterruptReportCallback callback,
+                                              DownstreamPacketTypeDef* packetToUse);
+
+
 /**
   * @}
   */ 

Downstream/Middlewares/ST/STM32_USB_Host_Library/Class/HID/Src/usbh_hid.c

@@ -182,6 +182,7 @@ static USBH_StatusTypeDef USBH_HID_InterfaceInit (USBH_HandleTypeDef *phost)
     HID_Handle->ep_addr   = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].bEndpointAddress;
     HID_Handle->length    = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].wMaxPacketSize;
     HID_Handle->poll      = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].bInterval;
+    HID_Handle->Protocol  = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].bInterfaceProtocol;
     
     if (HID_Handle->poll  < HID_MIN_POLL) 
     {
@@ -298,7 +299,7 @@ static USBH_StatusTypeDef USBH_HID_ClassRequest(USBH_HandleTypeDef *phost)
     {
       
       USBH_HID_ParseHIDDesc(&HID_Handle->HID_Desc, phost->device.Data);
-      HID_Handle->ctl_state = HID_REQ_SET_IDLE;     //HID_REQ_GET_REPORT_DESC;
+      HID_Handle->ctl_state = HID_REQ_SET_IDLE;
     }
     
     break;     
@@ -364,42 +365,21 @@ static USBH_StatusTypeDef USBH_HID_Process(USBH_HandleTypeDef *phost)
   switch (HID_Handle->state)
   {
   case HID_INIT:
-//    HID_Handle->Init(phost);
+      HID_Handle->timer = phost->Timer;
-      HID_Handle->pData = phost->device.Data;
+      HID_Handle->state = HID_IDLE;
-
-//  case HID_IDLE:
-//    if(USBH_HID_GetReport (phost,
-//                           0x01,
-//                            0,
-//                            HID_Handle->pData,
-//                            HID_Handle->length) == USBH_OK)
-//    {
-//
-//      fifo_write(&HID_Handle->fifo, HID_Handle->pData, HID_Handle->length);
-//      HID_Handle->state = HID_SYNC;
-//    }
-//
-//    break;
-    
-  case HID_SYNC:
-    /* Sync with start of Even Frame */
-    //Uhhh, doesn't this sync with an odd frame?
-    //Also, do we need to sync at all?
-
-    if(phost->Timer & 1)
-    {
-      HID_Handle->state = HID_GET_DATA; 
-    }
       break;
     
   case HID_GET_DATA:
+      if ((int32_t)(phost->Timer - HID_Handle->timer) >= HID_Handle->poll)
+      {
         USBH_InterruptReceiveData(phost,
-                              HID_Handle->pData,
+                                  HID_Handle->hid_packet_pbuf,
                                   HID_Handle->length,
                                   HID_Handle->InPipe);
 
         HID_Handle->state = HID_POLL;
         HID_Handle->timer = phost->Timer;
+      }
     break;
     
   case HID_POLL:
@@ -407,7 +387,7 @@ static USBH_StatusTypeDef USBH_HID_Process(USBH_HandleTypeDef *phost)
     
     if (urbStatus == USBH_URB_DONE)
     {
-        USBH_HID_EventCallback(phost);
+        HID_Handle->ReportCallback(HID_Handle->hid_packet);
         HID_Handle->state = HID_IDLE;
         break;
     }
@@ -446,18 +426,35 @@ static USBH_StatusTypeDef USBH_HID_Process(USBH_HandleTypeDef *phost)
   * @retval USBH Status
   */
 static USBH_StatusTypeDef USBH_HID_SOFProcess(USBH_HandleTypeDef *phost)
+{
+
+  return USBH_OK;
+}
+
+
+
+//Downstream_HID calls into here at main() priority,
+//to request a new report for Upstream.
+HAL_StatusTypeDef USBH_HID_GetInterruptReport(USBH_HandleTypeDef *phost,
+                                              HID_InterruptReportCallback callback,
+                                              DownstreamPacketTypeDef* packetToUse)
 {
     HID_HandleTypeDef *HID_Handle =  (HID_HandleTypeDef *) phost->pActiveClass->pData;
 
     if (HID_Handle->state == HID_IDLE)
     {
-    if ((int32_t)(phost->Timer - HID_Handle->timer) >= HID_Handle->poll)
+        HID_Handle->ReportCallback = callback;
-    {
+        HID_Handle->hid_packet = packetToUse;
+        HID_Handle->hid_packet_pbuf = packetToUse->Data;
         HID_Handle->state = HID_GET_DATA;
+        return HAL_OK;
     }
+
+    return HAL_ERROR;
 }
-  return USBH_OK;
+
-}
+
+
 
 /**
 * @brief  USBH_Get_HID_ReportDescriptor

Downstream/Src/downstream_hid.c

@@ -0,0 +1,77 @@
+/*
+ * downstream_hid.c
+ *
+ *  Created on: Apr 10, 2016
+ *      Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+
+
+#include "downstream_hid.h"
+#include "downstream_statemachine.h"
+#include "usbh_hid.h"
+
+
+
+extern USBH_HandleTypeDef hUsbHostFS;                       //Hard-link ourselves to usb_host.c
+extern InterfaceCommandClassTypeDef ConfiguredDeviceClass;  //Do a cheap hard-link to downstream_statemachine.c, rather than keep a duplicate here
+
+
+
+InterfaceCommandClassTypeDef Downstream_HID_ApproveConnectedDevice(void)
+{
+    HID_HandleTypeDef* HID_Handle =  (HID_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
+
+    if (HID_Handle->Protocol == HID_MOUSE_BOOT_CODE)
+    {
+        if (HID_Handle->length == 8)
+        {
+            return COMMAND_CLASS_HID_MOUSE;
+        }
+    }
+
+    return COMMAND_CLASS_INTERFACE;         //fail
+}
+
+
+
+void Downstream_HID_PacketProcessor(DownstreamPacketTypeDef* receivedPacket)
+{
+    if (receivedPacket->Command != COMMAND_HID_REPORT)
+    {
+        Downstream_PacketProcessor_FreakOut();
+        return;
+    }
+
+    if (USBH_HID_GetInterruptReport(&hUsbHostFS,
+                                    Downstream_HID_InterruptReportCallback,
+                                    receivedPacket) != HAL_OK)      //Don't free the packet, USBH_HID will use it then return it to InterruptReportCallback below
+    {
+        Downstream_PacketProcessor_FreakOut();
+    }
+
+}
+
+
+void Downstream_HID_InterruptReportCallback(DownstreamPacketTypeDef* packetToSend)
+{
+    if (ConfiguredDeviceClass == COMMAND_CLASS_HID_MOUSE)
+    {
+        packetToSend->Length16 = (HID_MOUSE_TRANSFER_BYTES / 2) + DOWNSTREAM_PACKET_HEADER_LEN_16;
+    }
+    //else if...
+    else
+    {
+        Downstream_PacketProcessor_FreakOut();
+        return;
+    }
+
+
+    Downstream_TransmitPacket(packetToSend);
+}
+
+

Downstream/Src/downstream_msc.c

@@ -37,27 +37,27 @@ void Downstream_MSC_GetStreamDataPacketCallback(DownstreamPacketTypeDef* receive
 
 //High-level checks on the connected device. We don't want some weirdly
 //configured device to bomb our USB stack, accidentally or otherwise.
-HAL_StatusTypeDef Downstream_MSC_ApproveConnectedDevice(void)
+InterfaceCommandClassTypeDef Downstream_MSC_ApproveConnectedDevice(void)
 {
     MSC_HandleTypeDef* MSC_Handle =  (MSC_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
 
     if (MSC_Handle->unit[MSC_FIXED_LUN].error != MSC_OK)
     {
-        return HAL_ERROR;
+        return COMMAND_CLASS_INTERFACE;         //fail
     }
 
     if ((MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr == 0) ||
         (MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr == UINT32_MAX))
     {
-        return HAL_ERROR;
+        return COMMAND_CLASS_INTERFACE;         //fail
     }
 
     if (MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_size != MSC_SUPPORTED_BLOCK_SIZE)
     {
-        return HAL_ERROR;
+        return COMMAND_CLASS_INTERFACE;         //fail
     }
 
-    return HAL_OK;
+    return COMMAND_CLASS_MASS_STORAGE;
 }
 
 

Downstream/Src/downstream_statemachine.c

@@ -10,10 +10,12 @@
  */
 
 
+#include <downstream_hid.h>
 #include "downstream_statemachine.h"
 #include "downstream_interface_def.h"
 #include "downstream_spi.h"
 #include "downstream_msc.h"
+#include "downstream_hid.h"
 #include "usbh_core.h"
 #include "usbh_msc.h"
 #include "usbh_hid.h"
@@ -32,6 +34,13 @@ void Downstream_PacketProcessor_Interface_ReplyNotifyDevice(DownstreamPacketType
 
 void Downstream_InitStateMachine(void)
 {
+    if ((DownstreamState       != STATE_DEVICE_NOT_READY) ||
+        (ConfiguredDeviceClass != COMMAND_CLASS_INTERFACE))
+    {
+        DOWNSTREAM_STATEMACHINE_FREAKOUT;
+        return;
+    }
+
     Downstream_InitSPI();
 
     //Prepare to receive our first packet from Upstream!
@@ -69,19 +78,28 @@ void Downstream_PacketProcessor(DownstreamPacketTypeDef* receivedPacket)
         return;
     }
 
-    //We should only receive class-specific messages when we are in the Active state.
+    //We should only receive class-specific messages when we are in the Active state,
-    if (DownstreamState != STATE_ACTIVE)
+    //and only to our currently active device class.
+    if ((DownstreamState != STATE_ACTIVE) ||
+        (receivedPacket->CommandClass != ConfiguredDeviceClass))
     {
         DOWNSTREAM_STATEMACHINE_FREAKOUT;
         return;
     }
 
-    switch (receivedPacket->CommandClass)
+
+    switch (ConfiguredDeviceClass)
     {
     case COMMAND_CLASS_MASS_STORAGE:
         Downstream_MSC_PacketProcessor(receivedPacket);
         break;
 
+    case COMMAND_CLASS_HID_MOUSE:
+    case COMMAND_CLASS_HID_KEYBOARD:
+        Downstream_HID_PacketProcessor(receivedPacket);
+        break;
+
+
     //Add other classes here...
 
     default:
@@ -196,17 +214,11 @@ void Downstream_HostUserCallback(USBH_HandleTypeDef *phost, uint8_t id)
         switch (phost->pActiveClass->ClassCode)
         {
         case USB_MSC_CLASS:
-            if (Downstream_MSC_ApproveConnectedDevice() == HAL_OK)
+            newActiveClass = Downstream_MSC_ApproveConnectedDevice();
-            {
-                newActiveClass = COMMAND_CLASS_MASS_STORAGE;
-            }
             break;
 
         case USB_HID_CLASS:
-
+            newActiveClass = Downstream_HID_ApproveConnectedDevice();
-            //FIXME!
-
-            newActiveClass = COMMAND_CLASS_HID_MOUSE;
             break;
 
         //Add other classes here...

Upstream/Inc/upstream_interface_def.h

@@ -32,6 +32,7 @@ typedef enum
     COMMAND_CLASS_INTERFACE,
     COMMAND_CLASS_MASS_STORAGE,
     COMMAND_CLASS_HID_MOUSE,
+    COMMAND_CLASS_HID_KEYBOARD,
     //...
     COMMAND_CLASS_ERROR
 }