Diff: USBHost/USBHALHost.h

Revision:

0:a554658735bf

Child:

2:5e8fdc541b98

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHost/USBHALHost.h	Wed Mar 06 16:27:14 2013 +0000
@@ -0,0 +1,167 @@
+/* Copyright (c) 2010-2012 mbed.org, MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef USBHALHOST_H
+#define USBHALHOST_H
+
+#include "USBHostTypes.h"
+#include "USBHostConf.h"
+
+class USBHostHub;
+
+class USBHALHost {
+public:
+
+    /**
+    * Constructor
+    * init variables and memory where will be stored HCCA, ED and TD
+    */
+    USBHALHost();
+    
+    /**
+    * Initialize host controller. Enable USB interrupts. This part is not in the constructor because, 
+    * this function calls a virtual method if a device is already connected
+    */
+    void init();
+    
+    /**
+    * reset the root hub
+    */
+    void resetRootHub();
+    
+    /**
+    * return the value contained in the control HEAD ED register
+    *
+    * @returns address of the control Head ED
+    */
+    uint32_t controlHeadED();
+    
+    /**
+    * return the value contained in the bulk HEAD ED register
+    *
+    * @returns address of the bulk head ED
+    */
+    uint32_t bulkHeadED();
+    
+    /**
+    * return the value of the head interrupt ED contained in the HCCA
+    *
+    * @returns address of the head interrupt ED contained in the HCCA
+    */
+    uint32_t interruptHeadED();
+    
+    
+    /**
+    * Update the head ED for control transfers
+    */
+    void updateControlHeadED(uint32_t addr);
+    
+    /**
+    * Update the head ED for bulk transfers
+    */
+    void updateBulkHeadED(uint32_t addr);
+    
+    /**
+    * Update the head ED for interrupt transfers
+    */
+    void updateInterruptHeadED(uint32_t addr);
+    
+    /* *
+    * Enable List for the specified endpoint type
+    */
+    void enableList(ENDPOINT_TYPE type);
+    
+    /**
+    * Disable List for the specified endpoint type
+    */
+    bool disableList(ENDPOINT_TYPE type);
+
+protected:
+    /**
+    * Virtual method called when a device has been connected
+    *
+    * @param hub hub number of the device
+    * @param port port number of the device
+    * @param lowSpeed 1 if low speed, 0 otherwise
+    * @param hub_parent reference to the hub where the device is connected (NULL if the hub parent is the root hub)
+    */
+    virtual void deviceConnected(int hub, int port, bool lowSpeed, USBHostHub * hub_parent = NULL) {};
+    
+    /**
+    * Virtual method called when a device has been disconnected
+    *
+    * @param hub hub number of the device
+    * @param port port number of the device
+    * @param hub_parent reference to the hub where the device is connected (NULL if the hub parent is the root hub)
+    * @param addr list of the TDs which have been completed to dequeue freed TDs
+    */
+    virtual void deviceDisconnected(int hub, int port, USBHostHub * hub_parent, volatile uint32_t addr) {};
+    
+    /**
+    * Virtual method called when a transfer has been completed
+    *
+    * @param addr list of the TDs which have been completed
+    */
+    virtual void transferCompleted(volatile uint32_t addr){};
+    
+    /**
+    * Find a memory section for a new ED
+    *
+    * @returns the address of this section
+    */
+    volatile uint8_t * getED();
+    
+    /**
+    * Find a memory section for a new TD
+    *
+    * @returns the address of this section
+    */
+    volatile uint8_t * getTD();
+    
+    /**
+    * Release a previous memory section reserved for an ED
+    *
+    * @param ed address of the ED
+    */
+    void freeED(volatile uint8_t * ed);
+    
+    /**
+    * Release a previous memory section reserved for an TD
+    *
+    * @param ed address of the TD
+    */
+    void freeTD(volatile uint8_t * td);
+
+private:
+    static void _usbisr(void);
+    void UsbIrqhandler();
+
+    void memInit();
+
+    HCCA volatile * usb_hcca;           //256 bytes aligned
+    uint8_t volatile  * usb_edBuf;      //4 bytes aligned
+    uint8_t volatile  * usb_tdBuf;      //4 bytes aligned
+
+    static USBHALHost * instHost;
+    
+    bool volatile  edBufAlloc[MAX_ENDPOINT];
+    bool volatile tdBufAlloc[MAX_TD];
+};
+
+#endif
+