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Fixed the ClassDriver GenericHID demo so that it echoes back reports as indicated in the demo overview.

This commit is contained in:
Dean Camera 2009-07-31 03:35:24 +00:00
parent eb41086947
commit ac593611c9
3 changed files with 20 additions and 7 deletions
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19
Demos/Device/ClassDriver/GenericHID/GenericHID.c
View File

@ -39,6 +39,14 @@
/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */ /** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
uint8_t PrevHIDReportBuffer[GENERIC_REPORT_SIZE]; uint8_t PrevHIDReportBuffer[GENERIC_REPORT_SIZE];
/** Structure to contain reports from the host, so that they can be echoed back upon request */
struct
{
uint8_t ReportID;
uint16_t ReportSize;
uint8_t ReportData[GENERIC_REPORT_SIZE];
} HIDReportEcho;
/** LUFA HID Class driver interface configuration and state information. This structure is /** 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 * passed to all HID Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another. * within a device can be differentiated from one another.
@ -139,9 +147,12 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID, bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
void* ReportData, uint16_t* ReportSize) void* ReportData, uint16_t* ReportSize)
{ {
// Create generic HID report here if (HIDReportEcho.ReportID)
*ReportID = HIDReportEcho.ReportID;
*ReportSize = 0; memcpy(ReportData, HIDReportEcho.ReportData, HIDReportEcho.ReportSize);
*ReportSize = HIDReportEcho.ReportSize;
return true; return true;
} }
@ -155,5 +166,7 @@ bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDIn
void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID, void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
const void* ReportData, const uint16_t ReportSize) const void* ReportData, const uint16_t ReportSize)
{ {
// Process received generic HID report here HIDReportEcho.ReportID = ReportID;
HIDReportEcho.ReportSize = ReportSize;
memcpy(HIDReportEcho.ReportData, ReportData, ReportSize);
} }

4
Demos/Device/ClassDriver/GenericHID/GenericHID.txt
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@ -51,8 +51,8 @@
* *
* Generic HID device demonstration application. This gives a simple reference application * Generic HID device demonstration application. This gives a simple reference application
* for implementing a generic HID device, using the basic USB HID drivers in all modern * for implementing a generic HID device, using the basic USB HID drivers in all modern
* OSes (i.e. no special drivers required). It accepts and sends up to 255 byte reports to * OSes (i.e. no special drivers required). By default it accepts and sends up to 8 byte reports
* and from a USB Host, and by default transmits the last sent report back to the host. * to and from a USB Host, and transmits the last sent report back to the host.
* *
* On start-up the system will automatically enumerate and function as a vendor HID device. * On start-up the system will automatically enumerate and function as a vendor HID device.
* When controlled by a custom HID class application, reports can be sent and received by * When controlled by a custom HID class application, reports can be sent and received by

4
Demos/Device/LowLevel/GenericHID/GenericHID.txt
View File

@ -51,8 +51,8 @@
* *
* Generic HID device demonstration application. This gives a simple reference application * Generic HID device demonstration application. This gives a simple reference application
* for implementing a generic HID device, using the basic USB HID drivers in all modern * for implementing a generic HID device, using the basic USB HID drivers in all modern
* OSes (i.e. no special drivers required). It accepts and sends up to 255 byte reports to * OSes (i.e. no special drivers required). By default it accepts and sends up to 8 byte reports
* and from a USB Host, and by default transmits the last sent report back to the host. * to and from a USB Host, and transmits the last sent report back to the host.
* *
* On start-up the system will automatically enumerate and function as a vendor HID device. * On start-up the system will automatically enumerate and function as a vendor HID device.
* When controlled by a custom HID class application, reports can be sent and received by * When controlled by a custom HID class application, reports can be sent and received by