[e017851] | 1 | /* CrO2 datassette emulator
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| 2 | * Copyright 2013, Adrien Destugues <pulkomandy@pulkomandy.tk>
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| 3 | *
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| 4 | * Distributed under the terms of the MIT licence.
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| 5 | *
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| 6 | * Handles device communication through libusb
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| 7 | */
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| 8 |
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| 9 | #include "device_bekit.h"
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| 10 | #include "k5.h"
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| 11 |
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| 12 | #include <typeinfo>
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| 13 | #include <USBKit.h>
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| 14 |
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| 15 |
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| 16 | // Gets the device instance. Throws an error message if something bad happens.
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| 17 | Device& Device::getDevice() throw(const char*)
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| 18 | {
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| 19 | if (instance == NULL) {
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| 20 | instance = new HaikuDevice();
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| 21 | }
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| 22 |
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| 23 | return *instance;
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| 24 | }
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| 25 |
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| 26 |
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| 27 | HaikuDevice::HaikuDevice() throw(const char*)
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| 28 | {
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| 29 | // At this point, either we have found a device and handle is pointing to it,
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| 30 | // or we failed and handle is NULL.
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| 31 | if (!handle)
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| 32 | throw "Device not found. Is the USB cable plugged correctly?";
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| 33 | }
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| 34 |
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| 35 |
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| 36 | HaikuDevice::~HaikuDevice()
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| 37 | {
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| 38 | delete handle;
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| 39 | }
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| 40 |
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| 41 |
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| 42 | int HaikuDevice::read(uint8_t* buffer, size_t max)
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| 43 | {
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| 44 | return handle->ControlTransfer(USB_REQTYPE_VENDOR | USB_REQTYPE_ENDPOINT_IN,
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| 45 | PSCMD_GET, 0,0, max, (char*)buffer);
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| 46 |
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| 47 | }
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| 48 |
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| 49 |
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| 50 | int HaikuDevice::write(const uint8_t* buffer, size_t size, int blktype)
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| 51 | {
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| 52 | int rqtype = (size == 0) ? USB_REQTYPE_ENDPOINT_IN:USB_REQTYPE_ENDPOINT_OUT;
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| 53 | return handle->ControlTransfer(USB_REQTYPE_VENDOR | rqtype,
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| 54 | PSCMD_PUT, blktype,0 /*checksum*/, size, (char*)buffer);
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| 55 |
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| 56 | }
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| 57 |
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| 58 |
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| 59 | uint8_t HaikuDevice::getStatus()
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| 60 | {
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| 61 | uint8_t status;
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| 62 | handle->ControlTransfer(USB_REQTYPE_VENDOR | USB_REQTYPE_ENDPOINT_IN,
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| 63 | PSCMD_STATUS, 0,0, 1, (char*)&status);
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| 64 | // TODO handle errors (return value)
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| 65 | return status;
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| 66 | }
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| 67 |
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| 68 |
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| 69 | status_t HaikuDevice::DeviceAdded(BUSBDevice* device)
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| 70 | {
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| 71 | if (handle != NULL) {
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| 72 | // We already have a device !
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| 73 | return B_ERROR;
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| 74 | }
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| 75 |
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| 76 | // Check if the device matches what we can handle
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| 77 |
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| 78 | if (device->VendorID() != vid && device->ProductID() != pid)
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| 79 | return B_ERROR;
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| 80 |
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| 81 | // Since we use V-USB shared vid/pid pair, we also have to check the
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| 82 | // manufacturer and product strings to actually identify the device amongst
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| 83 | // other users of the pair.
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| 84 | if (strcmp(device->ManufacturerString(), vendor) != 0)
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| 85 | return B_ERROR;
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| 86 |
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| 87 | if (strcmp(device->ProductString(), product) != 0)
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| 88 | return B_ERROR;
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| 89 |
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| 90 | // Ok, we have found our device !
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| 91 | handle = device;
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| 92 | return B_OK;
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| 93 | }
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| 94 |
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| 95 |
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| 96 | void HaikuDevice::DeviceRemoved(BUSBDevice* device)
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| 97 | {
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| 98 | // This is only called for devices we accepted in DeviceAdded. We accept
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| 99 | // only one, so we can safely remove it.
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| 100 | handle = NULL;
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| 101 | }
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| 102 |
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