Diff: WebUSBDevice/WebUSBDevice.cpp

Revision:

67:39396cc073f2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebUSBDevice/WebUSBDevice.cpp	Sun Sep 04 03:13:09 2016 +0000
@@ -0,0 +1,157 @@
+/*
+* Copyright 2016 Devan Lai
+*
+* 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 "stdint.h"
+
+#include "USBEndpoints.h"
+#include "USBDevice.h"
+#include "USBDescriptor.h"
+#include "WebUSB.h"
+#include "WebUSBDevice.h"
+
+WebUSBDevice::WebUSBDevice(uint16_t vendor_id, uint16_t product_id, uint16_t product_release)
+    : USBDevice(vendor_id, product_id, product_release)
+{
+
+};
+
+bool WebUSBDevice::requestGetDescriptor(void)
+{
+    bool success = false;
+    CONTROL_TRANSFER * transfer = getTransferPtr();
+    switch (DESCRIPTOR_TYPE(transfer->setup.wValue))
+    {
+        case BINARY_OBJECT_STORE_DESCRIPTOR:
+            if (binaryObjectStoreDesc() != NULL)
+            {
+                transfer->remaining = (binaryObjectStoreDesc()[2]
+                                    | (binaryObjectStoreDesc()[3] << 8));
+                transfer->ptr = binaryObjectStoreDesc();
+                transfer->direction = DEVICE_TO_HOST;
+                success = true;
+            }
+            break;
+        default:
+            success = USBDevice::requestGetDescriptor();
+            break;
+    }
+
+    return success;
+}
+
+bool WebUSBDevice::requestWebUSB(void)
+{
+    bool success = false;
+
+    CONTROL_TRANSFER * transfer = getTransferPtr();
+    switch (transfer->setup.wIndex)
+    {
+        case WEBUSB_GET_ALLOWED_ORIGINS:
+            if (allowedOriginsDesc())
+            {
+                transfer->remaining = (allowedOriginsDesc()[2]
+                                   |  (allowedOriginsDesc()[3] << 8));
+                transfer->ptr = allowedOriginsDesc();
+                transfer->direction = DEVICE_TO_HOST;
+                success = true;
+            }
+            break;
+        case WEBUSB_GET_URL:
+            if (transfer->setup.wValue == URL_OFFSET_LANDING_PAGE)
+            {
+                transfer->remaining = urlIlandingPage()[0];
+                transfer->ptr = urlIlandingPage();
+                transfer->direction = DEVICE_TO_HOST;
+                success = true;
+            }
+            else if (transfer->setup.wValue == URL_OFFSET_ALLOWED_ORIGIN)
+            {
+                transfer->remaining = urlIallowedOrigin()[0];
+                transfer->ptr = urlIallowedOrigin();
+                transfer->direction = DEVICE_TO_HOST;
+                success = true;
+            }
+            break;
+        default:
+            break;
+    }
+
+    return success;
+}
+
+bool WebUSBDevice::USBCallback_request()
+{
+    bool success = false;
+    /* Process WebUSB requests */
+    CONTROL_TRANSFER * transfer = getTransferPtr();
+    if ((transfer->setup.bmRequestType.Type == VENDOR_TYPE) &&
+        (transfer->setup.bRequest == WEBUSB_VENDOR_CODE))
+    {
+        success = requestWebUSB();
+    }
+    
+    return success;
+}
+
+uint8_t * WebUSBDevice::deviceDesc() {
+    static uint8_t deviceDescriptor[] = {
+        DEVICE_DESCRIPTOR_LENGTH,       /* bLength */
+        DEVICE_DESCRIPTOR,              /* bDescriptorType */
+        LSB(USB_VERSION_2_1),           /* bcdUSB (LSB) */
+        MSB(USB_VERSION_2_1),           /* bcdUSB (MSB) */
+        0x00,                           /* bDeviceClass */
+        0x00,                           /* bDeviceSubClass */
+        0x00,                           /* bDeviceprotocol */
+        MAX_PACKET_SIZE_EP0,            /* bMaxPacketSize0 */
+        (uint8_t)(LSB(VENDOR_ID)),                 /* idVendor (LSB) */
+        (uint8_t)(MSB(VENDOR_ID)),                 /* idVendor (MSB) */
+        (uint8_t)(LSB(PRODUCT_ID)),                /* idProduct (LSB) */
+        (uint8_t)(MSB(PRODUCT_ID)),                /* idProduct (MSB) */
+        (uint8_t)(LSB(PRODUCT_RELEASE)),           /* bcdDevice (LSB) */
+        (uint8_t)(MSB(PRODUCT_RELEASE)),           /* bcdDevice (MSB) */
+        STRING_OFFSET_IMANUFACTURER,    /* iManufacturer */
+        STRING_OFFSET_IPRODUCT,         /* iProduct */
+        STRING_OFFSET_ISERIAL,          /* iSerialNumber */
+        0x01                            /* bNumConfigurations */
+    };
+    return deviceDescriptor;
+}
+
+#define WEBUSB_BOS_TOTAL_LENGTH (BINARY_OBJECT_STORE_DESCRIPTOR_LENGTH \
+                                 + WEBUSB_PLATFORM_DESCRIPTOR_LENGTH)
+
+uint8_t * WebUSBDevice::binaryObjectStoreDesc() {
+    static uint8_t binaryObjectStoreDescriptor[] = {
+        BINARY_OBJECT_STORE_DESCRIPTOR_LENGTH, /* bLength */
+        BINARY_OBJECT_STORE_DESCRIPTOR, /* bDescriptorType */
+        LSB(WEBUSB_BOS_TOTAL_LENGTH),   /* wTotalLength (LSB) */
+        MSB(WEBUSB_BOS_TOTAL_LENGTH),   /* wTotalLength (MSB) */
+        0x01,                           /* bNumDeviceCaps */
+        WEBUSB_PLATFORM_DESCRIPTOR_LENGTH, /* bLength */
+        DEVICE_CAPABILITY_DESCRIPTOR,   /* bDescriptorType */
+        USB_DC_PLATFORM,                /* bDevCapabilityType */
+        0x00,                           /* bReserved */
+        0x38, 0xB6, 0x08, 0x34,         /* PlatformCapabilityUUID */
+        0xA9, 0x09, 0xA0, 0x47,
+        0x8B, 0xFD, 0xA0, 0x76,
+        0x88, 0x15, 0xB6, 0x65,
+        LSB(WEBUSB_VERSION_1_0),        /* bcdVersion (LSB) */
+        MSB(WEBUSB_VERSION_1_0),        /* bcdVersion (MSB) */
+        WEBUSB_VENDOR_CODE,             /* bVendorCode */
+        URL_OFFSET_LANDING_PAGE,        /* iLandingPage */
+    };
+    return binaryObjectStoreDescriptor;
+}