opendmx mac c source problems

[gabor papp]

dear opendmx usb users,

i'm trying to use an opendmx on a mac osx intel computer. i was not able to find any documentation on the subject apart from some sample code for windows that i have tried to port (http://prdownloads.sourceforge.net/opendmxusb/bc5_dmxusb_soft_141.zip?download). it uses the ftd2xx library, which also exists on mac, but the sample uses some win32 specific calls that i'm not sure how to port.

// set RS485 for sendin
FT_W32_EscapeCommFunction(ftHandle,CLRRTS);

FT_W32_SetCommBreak(ftHandle);
FT_W32_ClearCommBreak(ftHandle);

i also attached the non-working code. opening the device seems to work, but i had no luck sending data. the lights turn on when my program is running, and turn off when it ends.

any help would be appreciated.

thanks in advance,
gabor

------
                                                                                                                  #include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include "ftd2xx.h"

void panic(const char *panicstr, ...)
{
    char msgbuf[256];
    va_list args;

    va_start(args, panicstr);
    vsnprintf(msgbuf, 256, panicstr, args);
    va_end(args);

    fprintf(stderr, "*panic: %s\n", msgbuf);
    exit(1);
}

FT_HANDLE opendmx_open(void)
{
    FT_HANDLE fthandle;
    FT_STATUS ftstatus;
    char buf[512];

    ftstatus = FT_ListDevices(0, buf, FT_LIST_BY_INDEX | FT_OPEN_BY_DESCRIPTION);
    if (ftstatus != FT_OK)
        panic("FT_ListDevices %d", ftstatus);
   
    ftstatus = FT_Open(0, &fthandle);
    if (ftstatus != FT_OK)
        panic("FT_Open %d", ftstatus);

    ftstatus = FT_SetBaudRate(fthandle, 250000);
    if (ftstatus != FT_OK)
        panic("FT_SetBaudRate %d", ftstatus);

    ftstatus = FT_SetDataCharacteristics(fthandle, FT_BITS_8,
        FT_STOP_BITS_2, FT_PARITY_NONE);
    if (ftstatus != FT_OK)
        panic("FT_SetDataCharacteristics %d", ftstatus);   
   
    return fthandle;
}

void opendmx_send_frame(FT_HANDLE fthandle, unsigned numchannels,
    uint8_t *buf)
{
    FT_STATUS ftstatus;
    DWORD num;
    int startcode = 0;
   
    ftstatus = FT_ClrRts(fthandle);
    if (ftstatus != FT_OK)
        panic("CrlRts %d", ftstatus);
   
    ftstatus = FT_SetBreakOn(fthandle);
    if (ftstatus != FT_OK)
        panic("SetBreakOn %d", ftstatus);
   
    ftstatus = FT_SetBreakOff(fthandle);
    if (ftstatus !=FT_OK)
        panic("SetBreakOff %d", ftstatus);
   
    ftstatus = FT_Write(fthandle, &startcode, 1, &num);
    if ((ftstatus != FT_OK) || (num != 1))
        panic("FT_Write %d %d", ftstatus, num);    
   
    ftstatus = FT_Write(fthandle, buf, numchannels, &num);
    if ((ftstatus != FT_OK) || (num != numchannels))
        panic("FT_Write %d %d", ftstatus, num);
}

void opendmx_close(FT_HANDLE fthandle)
{
    FT_Close(fthandle);
}

int main(void)
{
    FT_HANDLE h;
    uint8_t buf[512];
   
    h = opendmx_open();

    for (int i=0; i<256; i++)
    {
        buf[0] = 0;
        for (int j=1; j<512; j++)
        {
            buf[j] = i;
        }
        opendmx_send_frame(h, 512, buf);
    }

        opendmx_close(h);
    return 0;
}

[Nobody/Anonymous]

gabor,

The header fie "ftd2xx.h" included in bc5_dmxusb_soft_141.zip is stale.
Get the latest D2XX library (Universal D2XX0.1.0.dmg) from FTDI site, then install the library and use D2XX/bin/ftd2xx.h instead.
HTH,

yoshi