diff options
Diffstat (limited to 'LUFA/Drivers/USB')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/HID.c | 10 | ||||
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/HID.h | 3 |
2 files changed, 9 insertions, 4 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/HID.c b/LUFA/Drivers/USB/Class/Device/HID.c index cc1ad43b5..7ff32498b 100644 --- a/LUFA/Drivers/USB/Class/Device/HID.c +++ b/LUFA/Drivers/USB/Class/Device/HID.c @@ -53,11 +53,15 @@ void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* const HIDInter uint16_t ReportINSize = 0;
uint8_t ReportID = (USB_ControlRequest.wValue & 0xFF);
uint8_t ReportType = (USB_ControlRequest.wValue >> 8) - 1;
+ uint8_t ReportINData[HIDInterfaceInfo->Config.PrevReportINBufferSize];
+
+ memset(ReportINData, 0, sizeof(ReportINData));
- memset(HIDInterfaceInfo->Config.PrevReportINBuffer, 0, HIDInterfaceInfo->Config.PrevReportINBufferSize);
-
CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportType,
HIDInterfaceInfo->Config.PrevReportINBuffer, &ReportINSize);
+
+ if (HIDInterfaceInfo->Config.PrevReportINBuffer != NULL)
+ memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINData, HIDInterfaceInfo->Config.PrevReportINBufferSize);
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
Endpoint_Write_Control_Stream_LE(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINSize);
@@ -169,7 +173,7 @@ void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) if (HIDInterfaceInfo->Config.PrevReportINBuffer != NULL)
{
StatesChanged = (memcmp(ReportINData, HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINSize) != 0);
- memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINData, ReportINSize);
+ memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINData, HIDInterfaceInfo->Config.PrevReportINBufferSize);
}
if (ReportINSize && (ForceSend || StatesChanged || IdlePeriodElapsed))
diff --git a/LUFA/Drivers/USB/Class/Device/HID.h b/LUFA/Drivers/USB/Class/Device/HID.h index 1ab71771f..92751241b 100644 --- a/LUFA/Drivers/USB/Class/Device/HID.h +++ b/LUFA/Drivers/USB/Class/Device/HID.h @@ -106,7 +106,8 @@ uint8_t PrevReportINBufferSize; /**< Size in bytes of the given input report buffer. This is used to create a
* second buffer of the same size within the driver so that subsequent reports
* can be compared. If the user app is to determine when reports are to be sent
- * exclusively (i.e. \ref PrevReportINBuffer is NULL) this value is ignored.
+ * exclusively (i.e. \ref PrevReportINBuffer is NULL) this value must still be
+ * set to the size of the largest report the device can issue to the host.
*/
} Config; /**< Config data for the USB class interface within the device. All elements in this section
* <b>must</b> be set or the interface will fail to enumerate and operate correctly.
|