diff options
Diffstat (limited to 'Demos/Device/ClassDriver/GenericHID/GenericHID.c')
| -rw-r--r-- | Demos/Device/ClassDriver/GenericHID/GenericHID.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/Demos/Device/ClassDriver/GenericHID/GenericHID.c b/Demos/Device/ClassDriver/GenericHID/GenericHID.c index 4315723f4..9db30cebf 100644 --- a/Demos/Device/ClassDriver/GenericHID/GenericHID.c +++ b/Demos/Device/ClassDriver/GenericHID/GenericHID.c @@ -36,6 +36,9 @@ #include "GenericHID.h"
+/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
+uint8_t PrevHIDReportBuffer[GENERIC_REPORT_SIZE];
+
/** LUFA HID Class driver interface configuration and state information. This structure is
* passed to all HID Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another.
@@ -48,6 +51,9 @@ USB_ClassInfo_HID_Device_t Generic_HID_Interface = .ReportINEndpointNumber = GENERIC_IN_EPNUM,
.ReportINEndpointSize = GENERIC_EPSIZE,
+
+ .PrevReportINBuffer = PrevHIDReportBuffer,
+ .PrevReportINBufferSize = sizeof(PrevHIDReportBuffer),
},
};
@@ -126,14 +132,17 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK) * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
* \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
* \param[out] ReportData Pointer to a buffer where the created report should be stored
+ * \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent
*
- * \return Number of bytes written in the report (or zero if no report is to be sent
+ * \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
*/
-uint16_t CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID, void* ReportData)
+bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
+ void* ReportData, uint16_t* ReportSize)
{
// Create generic HID report here
- return 0;
+ *ReportSize = 0;
+ return true;
}
/** HID class driver callback function for the processing of HID reports from the host.
|