"Chen" <[EMAIL PROTECTED]> a écrit dans le message de news: [EMAIL PROTECTED] > > Hi, all > > I am writing a program utilizing the serial port on palm to receive > data from a serial communication source. Everything works fine until > the very moment of mid-night --- one may preset the clock to > 11:59pm so that he doesn't have to wait for a whole day to see the > result. At exactly 12:00AM, the serial port will stop receiving > data, to make it worse, instead of losing a few bytes, the only way > to resume the receiving is to call SrmClearErr(gPortID), hinting a > serious prolbem in either the serial manager or even the serial > manager. > > Any one has suggestion regarding this? > > Thanks, > > XC > > ps. Test condition: > > 1) Tried three different baud rate: 115200 baud, 57600 baud and 19200 > baud > 2) Tried both default serial buffer size, and user-allocated 16384 > bytes buffer. > 3) Data rate: 245 bytes per second, regardless the baud rate > 4) Tested on Palm m105 and Sony Clie: Repeatable same finding >
I've just tested it, here are my results: - Palm III (Palm OS 3.0) (serial cradle): Communication freeze and my app fail to complet its communication - Palm m505 (Palm OS 4.0) (USB cradle): Communication freeze for about 1 sec. than it comme back. My app is able to complet its communication (after a few retry a guess) - Will try with a m515 and a serial cradle and comme back to you. -- ---------------------------------------- Regis St-Gelais ing. Ingénieur de projets / Project engineer Développement informatique / Software development Le Groupe ISAC Inc. Courriel / Email ..............: [EMAIL PROTECTED] Site Internet / Web site ...: www.isac-inc.com ----------------------------------------- -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
