Thank you, I am clearly and simply an idiot.
On Tue, 16 Nov 1999 17:26:59 -0800, "B. Flaumenhaft"
<[EMAIL PROTECTED]> wrote:
>
>Are you actually allocating space for SerErr somewhere?
>
>In the snippet below, you're declaring a pointer to an Err:
>
> Err * SerErr;
>
>but this pointer points to garbage. When you pass the pointer SerErr to
>SerSend(), you're passing it a pointer to some garbage area, and if it
>tries to insert an error code in that garbage area, you'll have problems.
>
>Regards,
>Ben Flaumenhaft
>
>>I am getting the following error when I call SerSend.
>>
>>DEX 1.0 reports "SerialMgr68328.c Line 904, null ref" ...
>>
>>Hopefully here is a code snippet that will hopefully show clearly and
>>simply how I am a idiot.
>>
>>Err *SerErr;
>>UInt RefNumber;
>>
>>void tx_byte(char ch)
>>{
>> static char tmp;
>>
>> tmp = ch;
>> SerSend(RefNumber,&tmp,1,SerErr);
>>}
>>
>>
>>........
>> err = SysLibFind("Serial Library",&RefNumber);
>> ErrFatalDisplayIf(err!=0,"sysLibFind");
>>
>>
>> err = SerOpen(RefNumber,0,9600);
>> ErrFatalDisplayIf(err!=0,"SerOpen");
>>
>> SerSettingsType serial;
>> serial.baudRate= 9600;
>> serial.ctsTimeout = serDefaultCTSTimeout;
>> serial.flags = serSettingsFlagBitsPerChar8 |
>> serSettingsFlagStopBits1;
>> err = SerSetSettings(RefNumber,&serial);
>> ErrFatalDisplayIf(err!=0,"SerSetSettings");
>>...
>> tx_byte(ENQ);
>>
>>
>>
>>I have looked at all the examples of setting up a serial connection
>>that I can find and I can't see what I am missing.
>>
>>Thanks
>
>
