Serial Comm at 9600,7,1,E

[Thomas Damme]

Hello,

I'm trying to communicate with a device whose serial port runs at 9600 baud,
7BitsPerChar, 1 Stopbit, Even Parity. I send bytes from a buffer but I never
get any answer. Thats why I connected to Palm via Cradle to my PC's
HyperTerminal and see that nothing comes out of the serial Port. This is the
code I use:

 UInt32  flagsBaudRate=srmSettingsFlagBitsPerChar7 |
srmSettingsFlagStopBits1 /* | srmSettingsFlagParityEvenM*/;
 UInt16  paramLen=sizeof(flagsBaudRate);


 if(SrmOpen(serPortCradlePort,9600,&uiPortId)==errNone){

  error=SrmControl (uiPortId, srmCtlSetFlags ,&flagsBaudRate, &paramLen);

  // send the 6-byte-command
  error=SrmSend(uiPortId,&bBuffer[0],6,&ulLen);
  error=SrmSendWait(uiPortId);

  SysTaskDelay(SysTicksPerSecond()/2);

  // See if it is answering
  error=SrmReceiveCheck(uiPortId,&ulCheckLen);

  SrmClose(uiPortId);
 }

But as soon as I change the setting srmSettingsFlagBitsPerChar7 to
srmSettingsFlagBitsPerChar8 I get the whole buffer displayed in
HyperTerminal. That leads to my question:

Is a PalmOS-Device able to send serial data with 7,1,E at all? Or what I'am
doing wrong. For years I've been thinking its possible since the settings
are in the API. Until I tried myself (and unfortunately have to get it
working!)

Thanks for your help,

Thomas

BTW. I tried that with a m505, Handera, Emulator and Simulator.



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