From 948b49c4077946bc5aea7b8def79e5f856997197 Mon Sep 17 00:00:00 2001 From: Proxcloud Date: Wed, 7 Feb 2018 01:07:48 +0800 Subject: [PATCH] Add BOS USB descriptor. This allows non-root access on Android devices --- common/usb_cdc.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/common/usb_cdc.c b/common/usb_cdc.c index 348b97e9..36df2a86 100644 --- a/common/usb_cdc.c +++ b/common/usb_cdc.c @@ -156,6 +156,28 @@ static const char cfgDescriptor[] = { 0x00, 0x00 // bInterval }; +const char BOSDescriptor[] = { + // BOS descriptor header + 0x05, 0x0F, 0x39, 0x00, 0x02, + + // Microsoft OS 2.0 Platform Capability Descriptor + 0x1C, // Descriptor size (28 bytes) + 0x10, // Descriptor type (Device Capability) + 0x05, // Capability type (Platform) + 0x00, // Reserved + + // MS OS 2.0 Platform Capability ID (D8DD60DF-4589-4CC7-9CD2-659D9E648A9F) + 0xDF, 0x60, 0xDD, 0xD8, + 0x89, 0x45, + 0xC7, 0x4C, + 0x9C, 0xD2, + 0x65, 0x9D, 0x9E, 0x64, 0x8A, 0x9F, + + 0x00, 0x00, 0x03, 0x06, // Windows version (8.1) (0x06030000) + 0x1e, 0x00, + 252, // Vendor-assigned bMS_VendorCode + 0x00 // Doesn’t support alternate enumeration +}; static const char StrDescLanguageCodes[] = { 4, // Length @@ -550,6 +572,10 @@ void AT91F_CDC_Enumerate() { AT91F_USB_SendData(pUdp, devDescriptor, MIN(sizeof(devDescriptor), wLength)); else if (wValue == 0x200) // Return Configuration Descriptor AT91F_USB_SendData(pUdp, cfgDescriptor, MIN(sizeof(cfgDescriptor), wLength)); + else if ((wValue & 0xF00) == 0xF00) // Return BOS Descriptor + AT91F_USB_SendData(pUdp, BOSDescriptor, MIN(sizeof(BOSDescriptor), wLength)); + else if ((wValue & 0x300) == 0x300) // Return Manufacturer Descriptor - this is needed by Android + AT91F_USB_SendData(pUdp, StrDescManufacturer, MIN(sizeof(StrDescManufacturer), wLength)); else if ((wValue & 0xF00) == 0x300) { // Return String Descriptor const char *strDescriptor = getStringDescriptor(wValue & 0xff); if (strDescriptor != NULL) { -- 2.39.2