mirror/qmk_firmware
1
0
Fork 0
mirror of https://github.com/qmk/qmk_firmware.git synced 2025-09-10 17:15:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

Make Endpoint control transfers more reliable; early-abort when an incomplete packet is sent from the host (indicating end of transfer), add check for control reads to ensure that no more than wLength bytes are read from the interface.

Browse Source 
Condense sequential printf_P/puts_P calls to single printf_P calls for size and clarity.
This commit is contained in:
Dean Camera
2009-08-06 14:22:04 +00:00
parent 3848482532
commit c830fcb0e1
14 changed files with 129 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
LUFA/Drivers/USB/LowLevel/Template/Template_Endpoint_Control_R.c
View File

@@ -1,8 +1,12 @@
uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
{
uint8_t* DataStream = (uint8_t*)(Buffer + TEMPLATE_BUFFER_OFFSET(Length));
uint8_t* DataStream = (uint8_t*)(Buffer + TEMPLATE_BUFFER_OFFSET(Length));
bool LastPacketFull = false;
while (Length)
if (Length > USB_ControlRequest.wLength)
Length = USB_ControlRequest.wLength;
while (Length || LastPacketFull)
{
if (Endpoint_IsSETUPReceived())
return ENDPOINT_RWCSTREAM_HostAborted;
@@ -12,6 +16,8 @@ uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
if (Endpoint_IsOUTReceived())
{
LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
while (Length && Endpoint_BytesInEndpoint())
{
TEMPLATE_TRANSFER_BYTE(DataStream);
@@ -19,6 +25,9 @@ uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
}
Endpoint_ClearOUT();
if (!(LastPacketFull))
Length = 0;
}
}