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fix bug in handling of long descriptors for bootloader USB (thank you, Todd Krein, Limor Fried, and Phillip Torrone)

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descriptors longer than 255 bytes were being shortened, causing problems with enumeration under Windows
This commit is contained in:
Zach Eveland
2012-01-10 14:25:40 -05:00
parent 2622ad5580
commit 015044add5
2 changed files with 124 additions and 1023 deletions
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1137
hardware/arduino/bootloaders/diskloader/DiskLoader-Leonardo.hex
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8
hardware/arduino/bootloaders/diskloader/src/USBCore.cpp
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@ -351,7 +351,7 @@ u8 _cdcComposite = 0;
bool SendDescriptor()
{
Setup& setup = _setup;
u8 desc_length = 0;
u16 desc_length = 0;
const u8* desc_addr = 0;
u8 t = setup.wValueH;
@ -387,13 +387,13 @@ bool SendDescriptor()
if (desc_length == 0)
desc_length = pgm_read_byte(desc_addr);
if ((u8)setup.wLength < desc_length) // bit of a cheat limiting to 255 bytes TODO (saved 8 bytes)
desc_length = (u8)setup.wLength;
if (setup.wLength < desc_length)
desc_length = setup.wLength;
// Send descriptor
// EP0 is 64 bytes long
// RWAL and FIFOCON don't work on EP0
u8 n = 0;
u16 n = 0;
do
{
if (!WaitForINOrOUT())