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| // FX2 FlashyDemo example
// (c) fpga4fun.com KNJN LLC - 2008, 2009
// This works in conjunction with a FlashyDemo FPGA bitfile
// This example uses the CyUSB driver
// Tested with MS Visual C++ 6.0
///////////////////////////////////////////////////
#include <windows.h>
#include <stdio.h>
#include <assert.h>
#include "CyAPI.h"
#pragma comment(lib, "CyAPI.lib") // this links CyAPI.lib statically to the project
// GUID {0EFA2C93-0C7B-454F-9403-D638F6C37E65}
static GUID GUID_KNJN_FX2 = {0x0EFA2C93, 0x0C7B, 0x454F, 0x94, 0x03, 0xD6, 0x38, 0xF6, 0xC3, 0x7E, 0x65};
#define BulkOutPipe0 USBDevice->EndPoints[1]
#define BulkInPipe1 USBDevice->EndPoints[2]
#define BulkOutPipe2 USBDevice->EndPoints[3]
#define BulkOutPipe3 USBDevice->EndPoints[4]
#define BulkInPipe4 USBDevice->EndPoints[5]
#define BulkInPipe5 USBDevice->EndPoints[6]
///////////////////////////////////////////////////
#define nFlashyChannels 4 // 4 for Saxo-Q, 2 for the other FX2 boards
#define AcqDataLen 1024
#define DataPacketVersion 2
void main()
{
int i, ch;
struct
{
WORD PktAdr;
BYTE DAC[8];
BYTE TriggerThreshold;
BYTE PreTriggerPoint;
BYTE FilterDataIn_HDiv;
BYTE AcqAllowed_TriggerSlope;
}
TriggerRequest;
struct DPH
{
WORD magic_number; // 0x55AA
BYTE version; // 0x01
BYTE nb_channels_and_ADCfreq;
};
struct
{
struct DPH hdr1; // header
BYTE samples[AcqDataLen*nFlashyChannels]; // data acquired from Flashy
DWORD dummy[4]; // don't care data
DWORD FC[3]; // frequency counters
struct DPH hdr2; // second header
}
DataPacket;
// make sure the structures are packed
assert(sizeof(TriggerRequest)==14);
assert(sizeof(DataPacket)==AcqDataLen*nFlashyChannels+36);
TriggerRequest.PktAdr = 0x0000;
TriggerRequest.DAC[0] = 0xFF; // max range and position
TriggerRequest.DAC[1] = 0xFF;
TriggerRequest.DAC[2] = 0xFF;
TriggerRequest.DAC[3] = 0xFF;
TriggerRequest.DAC[4] = 0xFF;
TriggerRequest.DAC[5] = 0xFF;
TriggerRequest.DAC[6] = 0xFF;
TriggerRequest.DAC[7] = 0xFF;
TriggerRequest.TriggerThreshold = 0; // trigger now
TriggerRequest.PreTriggerPoint = 128; // half the data before the trigger, half after
TriggerRequest.FilterDataIn_HDiv = 0; // acquire at full speed
TriggerRequest.AcqAllowed_TriggerSlope = 0x80;
CCyUSBDevice *USBDevice = new CCyUSBDevice(NULL, GUID_KNJN_FX2);
LONG len = sizeof(TriggerRequest);
BulkOutPipe2->XferData((PUCHAR)&TriggerRequest, len); // send the trigger request
len = sizeof(DataPacket);
BulkInPipe4->XferData((PUCHAR)&DataPacket, len); // and get the data packet back
if(DataPacket.hdr1.magic_number==0x55AA && DataPacket.hdr1.version==DataPacketVersion)
{
if((DataPacket.hdr1.nb_channels_and_ADCfreq & 0x0F)==nFlashyChannels)
{
if(DataPacket.hdr2.magic_number==0x55AA && DataPacket.hdr2.version==DataPacketVersion)
{
// display the data received
for(ch=0; ch<nFlashyChannels; ch++)
{
printf("Channel %d: ", ch+1);
for(i=0; i<AcqDataLen; i++) printf("%d ", DataPacket.samples[i+AcqDataLen*ch]);
printf("\n");
}
}
}
else
printf("Wrong number of Flashy channels (%d received, %d expected)\n", (DataPacket.hdr1.nb_channels_and_ADCfreq & 0x0F), nFlashyChannels);
}
else
printf("Bad packet received\n");
// now we could re-trigger to get more data if we wanted
// but let's just exit
delete USBDevice;
} |
Communication FPGA Visual Studio Violation d'accès (BulkInPipe)
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) je pencherais plutôt pour que ce soit USBDevice->EndPoints[5] le pointeur nul...
Envoyé par therwald
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