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From: Bill Davy on 7 Jun 2007 06:32
But NOT using EZ-USB which I suspect is messing my programme up. Perhaps it
does not allow for the extra memory in the FX2LP. I have written code to
download a program (in hex or iic format) to RAM or EEPROM, but that was
when the FX2 was running vend-ax (or our software, which is derived from
it). I just need to get a file handle and then use some library functionto
send 0xA0 commands to fill memory (bracketed by setting and clearing Reset
bit in CPUCS).

Or has someone already written this :-)

I tried using
SetupDiGetClassDevs() with various GUID:

static GUID GUID_0xe0317cca = {0xe0317cca, 0xbb7c, 0x4e2a, 0x9f, 0x28, 0xa6,
0x98, 0xe6, 0x0e, 0xde, 0x99};

static GUID GUID_0x36FC9E60 = {0x36FC9E60, 0xC465, 0x11CF, 0x80, 0x56, 0x44,
0x45, 0x53, 0x54, 0x00, 0x00};

And keep getting ERROR_NO_MORE_ITEMS even for interface number zero.


hCypress = CreateFile(\\\\.\\ezusb-0,GENERIC_WRITE,

FILE_SHARE_WRITE,

NULL,

OPEN_EXISTING,

0,

NULL);

yields a good handle but then

DeviceIoControl( hCypress, IOCTL_ADAPT_GET_DRIVER_VERSION,

&Ver, sizeof(Ver),

&Ver, sizeof(Ver),

&BytesReturned, NULL)

fails with "The parameter is incorrect".



I also tried the thing I really wanted to do and it failed with "The
parameter is incorrect":



{

const unsigned iPage = 0;


const size_t BufferLength = 64;


const unsigned __int16 MemoryAddress = BufferLength * iPage;


const size_t InfoBlockSize = sizeof(SINGLE_TRANSFER) + BufferLength;

char InfoBlock[InfoBlockSize];

PSINGLE_TRANSFER pInfoBlock = (PSINGLE_TRANSFER)InfoBlock;

union

{

struct

{

UCHAR Recipient:5;

UCHAR Type:2;

UCHAR Direction:1;

} Bits;


UCHAR Byte;

} Request;

Request.Bits.Recipient = TGT_DEVICE;

Request.Bits.Type = REQ_VENDOR;

Request.Bits.Direction = DIR_FROM_DEVICE;


memset(InfoBlock,0,sizeof(InfoBlock));


pInfoBlock->SetupPacket.bmRequest = Request.Byte;

pInfoBlock->SetupPacket.bRequest = VR_ANCHOR_LOAD_INTERNAL;

pInfoBlock->SetupPacket.wVal.lowByte = LSByte(MemoryAddress);

pInfoBlock->SetupPacket.wVal.hiByte = MSByte(MemoryAddress);

pInfoBlock->SetupPacket.wIndex = 0x0000;

pInfoBlock->SetupPacket.wLen.lowByte = LSByte(BufferLength);

pInfoBlock->SetupPacket.wLen.hiByte = MSByte(BufferLength);

pInfoBlock->SetupPacket.ulTimeOut = 2; // Seconds ?

pInfoBlock->ucEndpointAddress = 0x00; // Endpoint 0

pInfoBlock->IsoPacketOffset = 0;

pInfoBlock->BufferOffset = sizeof(SINGLE_TRANSFER);

pInfoBlock->BufferLength = BufferLength;

DWORD BytesReturned = 0;


if ( ! DeviceIoControl( hCypress, IOCTL_ADAPT_SEND_EP0_CONTROL_TRANSFER,

pInfoBlock, InfoBlockSize,

pInfoBlock, InfoBlockSize,

&BytesReturned, NULL) )

{

const LastErrorC LastError;

cerr << "DeviceIoControl() returned " << LastError << endl;

return 1;

}

else if ( BytesReturned != InfoBlockSize )

{

cerr << "BytesReturned=" << BytesReturned << ", InfoBlockSize=" <<
InfoBlockSize << endl;

return 1;

}

}


Any suggestions?

Many thanks

Bill


From: runner on 8 Jun 2007 08:41

"Bill Davy" <Bill(a)SynectixLtd.com> wrote in message
news:mridnY3yCPM4Q_rbRVnyvAA(a)bt.com...
> But NOT using EZ-USB which I suspect is messing my programme up. Perhaps
it
> does not allow for the extra memory in the FX2LP. I have written code to
> download a program (in hex or iic format) to RAM or EEPROM, but that was
> when the FX2 was running vend-ax (or our software, which is derived from
> it). I just need to get a file handle and then use some library
functionto
> send 0xA0 commands to fill memory (bracketed by setting and clearing Reset
> bit in CPUCS).
>
> Or has someone already written this :-)

I did that, but i wrote the driver and i don't know much about the
development kit from Cypress. I only studied the examples about the
firmware. Besides, i don't get what you mean when you say "But NOT
using EZ-USB...". Do they provide different drivers for each chip?




From: Bill Davy on 8 Jun 2007 12:02

"runner" <emb(a)dded> wrote in message
news:46694bda$0$4796$4fafbaef(a)reader4.news.tin.it...
>
> "Bill Davy" <Bill(a)SynectixLtd.com> wrote in message
> news:mridnY3yCPM4Q_rbRVnyvAA(a)bt.com...
>> But NOT using EZ-USB which I suspect is messing my programme up. Perhaps
> it
>> does not allow for the extra memory in the FX2LP. I have written code to
>> download a program (in hex or iic format) to RAM or EEPROM, but that was
>> when the FX2 was running vend-ax (or our software, which is derived from
>> it). I just need to get a file handle and then use some library
> functionto
>> send 0xA0 commands to fill memory (bracketed by setting and clearing
>> Reset
>> bit in CPUCS).
>>
>> Or has someone already written this :-)
>
> I did that, but i wrote the driver and i don't know much about the
> development kit from Cypress. I only studied the examples about the
> firmware. Besides, i don't get what you mean when you say "But NOT
> using EZ-USB...". Do they provide different drivers for each chip?
>
>
>
>

EZ-USB seems to be truncating the program at 8K when the FX2LP goes to 16 K.

However, Marc's uggestion I look at EZMR may help (the wrapping is there
too, but accessible). I too am now writng a command line (console)
application to bring a chip up from the "No EEPROM" state.

Hey ho
Bill


From: runner on 8 Jun 2007 14:34
> EZ-USB seems to be truncating the program at 8K when the FX2LP goes to 16
K.
>
> However, Marc's uggestion I look at EZMR may help (the wrapping is there
> too, but accessible). I too am now writng a command line (console)
> application to bring a chip up from the "No EEPROM" state.
>

There is no way you can upload the higher 8K by an
"A0 Request". It is written somewhere in the manual.
Don't ask me where. The last time i checked i had a
hard time. The solution is to upload a small relocator
first. It loads the higher 8K by relocating. Then you
upload the lower 8K.



From: Bill Davy on 12 Jun 2007 06:30

"runner" <emb(a)dded> wrote in message
news:46699ea3$0$17946$4fafbaef(a)reader1.news.tin.it...
>> EZ-USB seems to be truncating the program at 8K when the FX2LP goes to 16
> K.
>>
>> However, Marc's uggestion I look at EZMR may help (the wrapping is there
>> too, but accessible). I too am now writng a command line (console)
>> application to bring a chip up from the "No EEPROM" state.
>>
>
> There is no way you can upload the higher 8K by an
> "A0 Request". It is written somewhere in the manual.
> Don't ask me where. The last time i checked i had a
> hard time. The solution is to upload a small relocator
> first. It loads the higher 8K by relocating. Then you
> upload the lower 8K.
>
>
>

The FX2LP core seems to load the 16K fine using A0 command. At least, I
load 8K+ bytes and then verify they are as written.

Sadly, some of the Cypress utilities hardwire the 8K limit so do not work
for FX2LP. I found data intended for 8K+X was ending up in X

Sadly, there is no easy way to find out what the processor is. If it was in
a register it could be read using A0 command and a decision could be taken.

By looking at the USB traffic (using http://sysnucleus.com/ which is really
neat, and soon I will find out how to interpret the log and capture data
in), I find CyConsole downloads its own loader to RAM before loading (large)
EEPROM. I've copied the salient partsof vend_ax into my program and now
Imust find out why it does not work. Hey ho.

Thanks for the help and suggestions.

Bill


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