topic Serial port communications in Software Archive

Serial port communications

Intel_C_Intel — Mon, 26 Mar 2001 20:28:55 GMT

We have developed a small application which uses serial ports to connect to othr hardware. The code uses SPORT_CONNECT, SPORT_CANCEL_IO, SPORT_SET_STATE, SPORT_SET_TIMEOUTS, SPORT_WRITE_LINE, SPORT_READ_LINE and SPORT_RELEASE on COM1 and COM2. It runs much slower than desired, about 1/10th of the baud rates of 38.4k and 19.2k. Other apps on the same PC transfer data to the ports much faster. Any ideas?

Re: Serial port communications

durisinm — Wed, 28 Mar 2001 06:41:46 GMT

How did you configure the port parameters? How do you measure your application's performance so that you know it is running slowly? What other applications are running faster?

Mike Durisin

Re: Serial port communications

Intel_C_Intel — Wed, 28 Mar 2001 22:51:14 GMT

This has now been fixed by upgrading from VF6.5 to VF6.5a. Performance now seems O.K. though I haven't yet mad precise measurements.