Diff: USBHID/USBHID.cpp

Revision:

1:80ab0d068708

Child:

10:1e3d126a322b

diff -r d8db74b663b3 -r 80ab0d068708 USBHID/USBHID.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHID/USBHID.cpp	Tue Jul 17 14:30:29 2012 +0000
@@ -0,0 +1,273 @@
+/* Copyright (c) 2010-2011 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.
+*/
+
+#include "stdint.h"
+#include "USBHAL.h"
+#include "USBHID.h"
+
+
+USBHID::USBHID(uint8_t output_report_length, uint8_t input_report_length, uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect): USBDevice(vendor_id, product_id, product_release)
+{
+    output_length = output_report_length;
+    input_length = input_report_length;
+    if(connect) {
+        USBDevice::connect();
+    }
+}
+
+
+bool USBHID::send(HID_REPORT *report)
+{
+    return write(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);
+}
+
+bool USBHID::sendNB(HID_REPORT *report)
+{
+    return writeNB(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);
+}
+
+
+bool USBHID::read(HID_REPORT *report)
+{
+    uint32_t bytesRead = 0;
+    bool result;
+    result = USBDevice::readEP(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
+    if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
+        return false;
+    report->length = bytesRead;
+    return result;
+}
+
+
+bool USBHID::readNB(HID_REPORT *report)
+{
+    uint32_t bytesRead = 0;
+    bool result;
+    result = USBDevice::readEP_NB(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
+    report->length = bytesRead;
+    if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
+        return false;
+    return result;
+}
+
+
+uint16_t USBHID::reportDescLength() {
+    reportDesc();
+    return reportLength;
+}
+
+
+
+//
+//  Route callbacks from lower layers to class(es)
+//
+
+
+// Called in ISR context
+// Called by USBDevice on Endpoint0 request
+// This is used to handle extensions to standard requests
+// and class specific requests
+// Return true if class handles this request
+bool USBHID::USBCallback_request() {
+    bool success = false;
+    CONTROL_TRANSFER * transfer = getTransferPtr();
+    uint8_t *hidDescriptor;
+
+    // Process additional standard requests
+
+    if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE))
+    {
+        switch (transfer->setup.bRequest)
+        {
+            case GET_DESCRIPTOR:
+                switch (DESCRIPTOR_TYPE(transfer->setup.wValue))
+                {
+                    case REPORT_DESCRIPTOR:
+                        if ((reportDesc() != NULL) \
+                            && (reportDescLength() != 0))
+                        {
+                            transfer->remaining = reportDescLength();
+                            transfer->ptr = reportDesc();
+                            transfer->direction = DEVICE_TO_HOST;
+                            success = true;
+                        }
+                        break;
+                    case HID_DESCRIPTOR:
+                            // Find the HID descriptor, after the configuration descriptor
+                            hidDescriptor = findDescriptor(HID_DESCRIPTOR);
+                            if (hidDescriptor != NULL)
+                            {
+                                transfer->remaining = HID_DESCRIPTOR_LENGTH;
+                                transfer->ptr = hidDescriptor;
+                                transfer->direction = DEVICE_TO_HOST;
+                                success = true;
+                            }
+                            break;
+                     
+                    default:
+                        break;
+                }
+                break;
+            default:
+                break;
+        }
+    }
+
+    // Process class-specific requests
+
+    if (transfer->setup.bmRequestType.Type == CLASS_TYPE)
+    {
+        switch (transfer->setup.bRequest)
+        {
+             case SET_REPORT:
+                // First byte will be used for report ID
+                outputReport.data[0] = transfer->setup.wValue & 0xff;
+                outputReport.length = transfer->setup.wLength + 1;
+
+                transfer->remaining = sizeof(outputReport.data) - 1;
+                transfer->ptr = &outputReport.data[1];
+                transfer->direction = HOST_TO_DEVICE;
+                transfer->notify = true;
+                success = true;
+            default:
+                break;
+        }
+    }
+
+    return success;
+}
+
+
+#define DEFAULT_CONFIGURATION (1)
+
+
+// Called in ISR context
+// Set configuration. Return false if the
+// configuration is not supported
+bool USBHID::USBCallback_setConfiguration(uint8_t configuration) {
+    if (configuration != DEFAULT_CONFIGURATION) {
+        return false;
+    }
+
+    // Configure endpoints > 0
+    addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
+    addEndpoint(EPINT_OUT, MAX_PACKET_SIZE_EPINT);
+
+    // We activate the endpoint to be able to recceive data
+    readStart(EPINT_OUT, MAX_PACKET_SIZE_EPINT);
+    return true;
+}
+
+
+uint8_t * USBHID::stringIinterfaceDesc() {
+    static uint8_t stringIinterfaceDescriptor[] = {
+        0x08,               //bLength
+        STRING_DESCRIPTOR,  //bDescriptorType 0x03
+        'H',0,'I',0,'D',0,  //bString iInterface - HID
+    };
+    return stringIinterfaceDescriptor;
+}
+
+uint8_t * USBHID::stringIproductDesc() {
+    static uint8_t stringIproductDescriptor[] = {
+        0x16,                                                       //bLength
+        STRING_DESCRIPTOR,                                          //bDescriptorType 0x03
+        'H',0,'I',0,'D',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 //bString iProduct - HID device
+    };
+    return stringIproductDescriptor;
+}
+
+
+
+uint8_t * USBHID::reportDesc() {
+    static uint8_t reportDescriptor[] = {
+        0x06, LSB(0xFFAB), MSB(0xFFAB),
+        0x0A, LSB(0x0200), MSB(0x0200),
+        0xA1, 0x01,         // Collection 0x01
+        0x75, 0x08,         // report size = 8 bits
+        0x15, 0x00,         // logical minimum = 0
+        0x26, 0xFF, 0x00,   // logical maximum = 255
+        0x95, input_length,           // report count
+        0x09, 0x01,         // usage
+        0x81, 0x02,         // Input (array)
+        0x95, output_length,           // report count
+        0x09, 0x02,         // usage
+        0x91, 0x02,         // Output (array)
+        0xC0                // end collection
+
+    };
+    reportLength = sizeof(reportDescriptor);
+    return reportDescriptor;
+}
+
+#define DEFAULT_CONFIGURATION (1)
+#define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \
+                               + (1 * INTERFACE_DESCRIPTOR_LENGTH) \
+                               + (1 * HID_DESCRIPTOR_LENGTH) \
+                               + (2 * ENDPOINT_DESCRIPTOR_LENGTH))
+
+uint8_t * USBHID::configurationDesc() {
+    static uint8_t configurationDescriptor[] = {
+        CONFIGURATION_DESCRIPTOR_LENGTH,// bLength
+        CONFIGURATION_DESCRIPTOR,       // bDescriptorType
+        LSB(TOTAL_DESCRIPTOR_LENGTH),   // wTotalLength (LSB)
+        MSB(TOTAL_DESCRIPTOR_LENGTH),   // wTotalLength (MSB)
+        0x01,                           // bNumInterfaces
+        DEFAULT_CONFIGURATION,          // bConfigurationValue
+        0x00,                           // iConfiguration
+        C_RESERVED | C_SELF_POWERED,    // bmAttributes
+        C_POWER(0),                     // bMaxPower
+
+        INTERFACE_DESCRIPTOR_LENGTH,    // bLength
+        INTERFACE_DESCRIPTOR,           // bDescriptorType
+        0x00,                           // bInterfaceNumber
+        0x00,                           // bAlternateSetting
+        0x02,                           // bNumEndpoints
+        HID_CLASS,                      // bInterfaceClass
+        HID_SUBCLASS_NONE,              // bInterfaceSubClass
+        HID_PROTOCOL_NONE,              // bInterfaceProtocol
+        0x00,                           // iInterface
+
+        HID_DESCRIPTOR_LENGTH,          // bLength
+        HID_DESCRIPTOR,                 // bDescriptorType
+        LSB(HID_VERSION_1_11),          // bcdHID (LSB)
+        MSB(HID_VERSION_1_11),          // bcdHID (MSB)
+        0x00,                           // bCountryCode
+        0x01,                           // bNumDescriptors
+        REPORT_DESCRIPTOR,              // bDescriptorType
+        LSB(this->reportDescLength()),  // wDescriptorLength (LSB)
+        MSB(this->reportDescLength()),  // wDescriptorLength (MSB)
+
+        ENDPOINT_DESCRIPTOR_LENGTH,     // bLength
+        ENDPOINT_DESCRIPTOR,            // bDescriptorType
+        PHY_TO_DESC(EPINT_IN),          // bEndpointAddress
+        E_INTERRUPT,                    // bmAttributes
+        LSB(MAX_PACKET_SIZE_EPINT),     // wMaxPacketSize (LSB)
+        MSB(MAX_PACKET_SIZE_EPINT),     // wMaxPacketSize (MSB)
+        1,                             // bInterval (milliseconds)
+
+        ENDPOINT_DESCRIPTOR_LENGTH,     // bLength
+        ENDPOINT_DESCRIPTOR,            // bDescriptorType
+        PHY_TO_DESC(EPINT_OUT),          // bEndpointAddress
+        E_INTERRUPT,                    // bmAttributes
+        LSB(MAX_PACKET_SIZE_EPINT),     // wMaxPacketSize (LSB)
+        MSB(MAX_PACKET_SIZE_EPINT),     // wMaxPacketSize (MSB)
+        1,                             // bInterval (milliseconds)
+    };
+    return configurationDescriptor;
+}