I am new to all of this. Trying to teach myself. I will try to show only the most relevant code.
I know I have everything up to here working right:
hReadFile = CreateFile(FILE_NAME_ASCIIZ, %GENERIC_READ OR %GENERIC_WRITE, %FILE_SHARE_READ OR %FILE_SHARE_WRITE, BYVAL %NULL, %OPEN_EXISTING, %FILE_FLAG_OVERLAPPED, %NULL)
Because this works:
MY_OVERLAPPED.Offset = 0
MY_OVERLAPPED.OffsetHigh = 0
MY_OVERLAPPED.hEvent = GLOBAL_EVENT_WAIT_FOR_OVERLAPPED_READ
RESULT = WaitForSingleObject(MY_OVERLAPPED.hEvent, 3000)
RESULT = ReadFile(BYVL hReadFile , READ_BUFFER, MY_InputReportByteLength, BYTES_READ, MY_OVERLAPPED)
HOWEVER...
This does not work:
WRITE_BUFFER = "TEST"
MY_OVERLAPPED.Offset = 0
MY_OVERLAPPED.OffsetHigh = 0
RESULT = WriteFile(GLOBAL_FILE_HANDLE, WRITE_BUFFER, MY_OutputReportByteLength, BYTES_WRITTEN, MY_OVERLAPPED)
I keep getting error 87 - ERROR_INVALID_PARAMETER
If I have the WRITE_BUFFER mal-formed will WriteFile refuse to do the function? I am watching the data on wireshark and cant get any data to from the host to the device.
I have lots of other stuff working - I can get all the info about the device etc... Just can't write to it.
Input Data Items
================
** Input "Value" ** (HID Report Main Item):
------------------------------------------
(Contents of a Windows _HIDP_VALUE_CAPS data structure)
.UsagePage: 0x9 USAGEPAGE_BUTTON
.ReportID: 1
.BitSize: 8
.ReportCount: 1
.LogicalMin: 0
.LogicalMax: 255
.PhysicalMin: 0
.PhysicalMax: 0
.UnitsExp: 0x0
.Units: 0x0
.LinkCollection: 0
.LinkUsagePage: 0xC USAGEPAGE_CONSUMER_DEVICES
.LinkUsage: 0x1 CONSUME_CONSUMER_CONTROL
Main Item bits:
Data,
Variable,
Absolute,
No Wrap,
Linear,
Has Preferred State,
NO Null State,
Non Volatile (Output and Feature items only),
Bit Field,
.IsAlias: False
.IsRange: True
.IsStringRange: False
.IsDesignatorRange: False
.IsAbsolute: True
.HasNull: False
.Range.UsageMin: 0x1 BUTTON_1
.Range.UsageMax: 0xF BUTTON_15
.Range.StringMin: 0x0
.Range.StringMax: 0x0
.Range.DesignatorMin: 0x0
.Range.DesignatorMax: 0x0
.Range.DataIndexMin: 0x0
.Range.DataIndexMax: 0xE
Additional Information:
(Array element 0)
.Name: "BUTTON_1"
.ReportType = Input
.ReportID: 1
.HasBeenAdded: False
.UsagePage: 0x9 USAGEPAGE_BUTTON
.UsageMin: 0x1 BUTTON_1
.UsageMax: 0xF BUTTON_15
.SizeInBits: 8
.MaxListLength: 15
.ScaleMode = smBoth (Read both Unscaled and Scaled values)
Scaled and Unscaled Values:
Unscaled : .pValueList[0]^ = 0x0 = 0
Scaled : .pScaledValueList[0]^ = 0x0 = 0
.WriteAsScaled[0]: False
Unscaled : .pValueList[1]^ = 0x0 = 0
Scaled : .pScaledValueList[1]^ = 0x0 = 0
.WriteAsScaled[1]: False
Unscaled : .pValueList[2]^ = 0x0 = 0
Scaled : .pScaledValueList[2]^ = 0x0 = 0
.WriteAsScaled[2]: False
Unscaled : .pValueList[3]^ = 0x0 = 0
Scaled : .pScaledValueList[3]^ = 0x0 = 0
.WriteAsScaled[3]: False
Unscaled : .pValueList[4]^ = 0x0 = 0
Scaled : .pScaledValueList[4]^ = 0x0 = 0
.WriteAsScaled[4]: False
Unscaled : .pValueList[5]^ = 0x0 = 0
Scaled : .pScaledValueList[5]^ = 0x0 = 0
.WriteAsScaled[5]: False
Unscaled : .pValueList[6]^ = 0x0 = 0
Scaled : .pScaledValueList[6]^ = 0x0 = 0
.WriteAsScaled[6]: False
Unscaled : .pValueList[7]^ = 0x0 = 0
Scaled : .pScaledValueList[7]^ = 0x0 = 0
.WriteAsScaled[7]: False
Unscaled : .pValueList[8]^ = 0x0 = 0
Scaled : .pScaledValueList[8]^ = 0x0 = 0
.WriteAsScaled[8]: False
Unscaled : .pValueList[9]^ = 0x0 = 0
Scaled : .pScaledValueList[9]^ = 0x0 = 0
.WriteAsScaled[9]: False
Unscaled : .pValueList[10]^ = 0x0 = 0
Scaled : .pScaledValueList[10]^ = 0x0 = 0
.WriteAsScaled[10]: False
Unscaled : .pValueList[11]^ = 0x0 = 0
Scaled : .pScaledValueList[11]^ = 0x0 = 0
.WriteAsScaled[11]: False
Unscaled : .pValueList[12]^ = 0x0 = 0
Scaled : .pScaledValueList[12]^ = 0x0 = 0
.WriteAsScaled[12]: False
Unscaled : .pValueList[13]^ = 0x0 = 0
Scaled : .pScaledValueList[13]^ = 0x0 = 0
.WriteAsScaled[13]: False
Unscaled : .pValueList[14]^ = 0x0 = 0
Scaled : .pScaledValueList[14]^ = 0x0 = 0
.WriteAsScaled[14]: False
Description string IDs:
StringMin: 0
StringMax: 0
StringID[0] = 0
String[0] = ""
** Input "Value" ** (HID Report Main Item):
------------------------------------------
(Contents of a Windows _HIDP_VALUE_CAPS data structure)
.UsagePage: 0x9 USAGEPAGE_BUTTON
.ReportID: 1
.BitSize: 8
.ReportCount: 1
.LogicalMin: 0
.LogicalMax: 255
.PhysicalMin: 0
.PhysicalMax: 0
.UnitsExp: 0x0
.Units: 0x0
.LinkCollection: 0
.LinkUsagePage: 0xC USAGEPAGE_CONSUMER_DEVICES
.LinkUsage: 0x1 CONSUME_CONSUMER_CONTROL
Main Item bits:
Data,
Variable,
Absolute,
No Wrap,
Linear,
Has Preferred State,
NO Null State,
Non Volatile (Output and Feature items only),
Bit Field,
.IsAlias: False
.IsRange: False
.IsStringRange: False
.IsDesignatorRange: False
.IsAbsolute: True
.HasNull: False
.NotRange.Usage: 0x1 BUTTON_1
.NotRange.StringIndex: 0x0
.NotRange.DesignatorIndex: 0x0
.NotRange.DataIndex: 0xF
Additional Information:
(Array element 1)
.Name: "BUTTON_1"
.ReportType = Input
.ReportID: 1
.HasBeenAdded: False
.UsagePage: 0x9 USAGEPAGE_BUTTON
.UsageMin: 0x1 BUTTON_1
.UsageMax: 0x1 BUTTON_1
.SizeInBits: 8
.MaxListLength: 1
.ScaleMode = smBoth (Read both Unscaled and Scaled values)
Scaled and Unscaled Values:
Unscaled : .pValueList[0]^ = 0x0 = 0
Scaled : .pScaledValueList[0]^ = 0x0 = 0
.WriteAsScaled[0]: False
Description string IDs:
StringMin: 0
StringMax: 0
StringID[0] = 0
String[0] = ""
=================
** Output "Value" ** (HID Report Main Item):
-------------------------------------------
(Contents of a Windows _HIDP_VALUE_CAPS data structure)
.UsagePage: 0x9 USAGEPAGE_BUTTON
.ReportID: 2
.BitSize: 8
.ReportCount: 1023
.LogicalMin: 0
.LogicalMax: 255
.PhysicalMin: 0
.PhysicalMax: 0
.UnitsExp: 0x0
.Units: 0x0
.LinkCollection: 0
.LinkUsagePage: 0xC USAGEPAGE_CONSUMER_DEVICES
.LinkUsage: 0x1 CONSUME_CONSUMER_CONTROL
Main Item bits:
Data,
Variable,
Absolute,
No Wrap,
Linear,
Has Preferred State,
NO Null State,
Non Volatile (Output and Feature items only),
Bit Field,
.IsAlias: False
.IsRange: False
.IsStringRange: False
.IsDesignatorRange: False
.IsAbsolute: True
.HasNull: False
.NotRange.Usage: 0xFF00 BUTTON_65280
.NotRange.StringIndex: 0x0
.NotRange.DesignatorIndex: 0x0
.NotRange.DataIndex: 0x0
Additional Information:
(Array element 0)
.Name: "BUTTON_65280"
.ReportType = Output
.ReportID: 2
.HasBeenAdded: False
.UsagePage: 0x9 USAGEPAGE_BUTTON
.UsageMin: 0xFF00 BUTTON_65280
.UsageMax: 0xFF00 BUTTON_65280
.SizeInBits: 8
.MaxListLength: 1
.ScaleMode = smBoth (Read both Unscaled and Scaled values)
Scaled and Unscaled Values:
Unscaled : .pValueList[0]^ = 0x0 = 0
Scaled : .pScaledValueList[0]^ = 0x0 = 0
.WriteAsScaled[0]: False
Array of Values:
.MaxArrayLength: 1023
.CurrentArrayLength: 1023
.MaxArrayBytes: 1023
Raw bytes :
.pValArray[0]^ = 0x0 = 0
.pValArray[1]^ = 0x0 = 0
.pValArray[2]^ = 0x0 = 0
.pValArray[3]^ = 0x0 = 0
.pValArray[4]^ = 0x0 = 0
.pValArray[5]^ = 0x0 = 0
.pValArray[6]^ = 0x0 = 0 etc....
.pValArray[1017]^ = 0x0 = 0
.pValArray[1018]^ = 0x0 = 0
.pValArray[1019]^ = 0x0 = 0
.pValArray[1020]^ = 0x0 = 0
.pValArray[1021]^ = 0x0 = 0
.pValArray[1022]^ = 0x0 = 0
Description string IDs:
StringMin: 0
StringMax: 0
StringID[0] = 0
String[0] = ""
====================================================
End of Report: Output Report ID 2
====================================================
