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Discussion forum for the BasicX family of microcontroller chips.
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Com3 parameters - Author Unknown - Aug 14 13:25:00 2000
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Group: I have a Trimble SK8-II GPS receiver that I've been using with my BX24. The default com parameters for the GPS are 9600 8-O-1, which I tried changing to 9600 8-N-1 with my PC with no luck. In a moment of weakness, I set up COM3 on the BX24 with the following parameter mask: bx0010_1000 (non-inverted, odd parity, 8 data bits) Voila! I'm talking to the GPS. Seems wonderful, until I look up DefineCom3() (page 31), where it says that "Parity is not supported for 8-bit data." Am I inviting something terrible here? Are the gods of the BasicX going to smite my chip down for not properly reading the manuals? Seriously, has anyone else tried this? When NetMedia says that parity is "Not supported," does that just mean untested, or actually incapable of operating under these conditions? Why am I able to use parity and 8 data bits if the hardware is not designed to work this way? Any info is appreciated. Thanks Chris |
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Re: Com3 parameters - Jack Schoof - Aug 14 21:54:00 2000
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I just looked at the source code. Luckily I added this at the last minute to support 8 bits with parity before the original release of the BX24. The manual does not reflect this and we will change the manual. We do throw away the parity bit, so you would have no idea if the parity was correct, so technically the manual is still correct. Happy wandering! Now you will know where the BX24 is at all times. Jack -----Original Message----- From: <> To: <> Date: Monday, August 14, 2000 11:28 AM Subject: [BasicX] Com3 parameters >Group: > >I have a Trimble SK8-II GPS receiver that I've been using with my >BX24. The default com parameters for the GPS are 9600 8-O-1, which I >tried changing to 9600 8-N-1 with my PC with no luck. In a moment of >weakness, I set up COM3 on the BX24 with the following parameter mask: > >bx0010_1000 (non-inverted, odd parity, 8 data bits) > >Voila! I'm talking to the GPS. Seems wonderful, until I look up >DefineCom3() (page 31), where it says that "Parity is not supported >for 8-bit data." Am I inviting something terrible here? Are the >gods of the BasicX going to smite my chip down for not properly >reading the manuals? > >Seriously, has anyone else tried this? When NetMedia says that >parity is "Not supported," does that just mean untested, or actually >incapable of operating under these conditions? Why am I able to use >parity and 8 data bits if the hardware is not designed to work this >way? > >Any info is appreciated. > >Thanks >Chris > |
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Re: Com3 parameters - Author Unknown - Aug 14 22:34:00 2000
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Jack: Actually, I'm more worried about where the heck *I* am.... Thanks for your help (and last minute coding). Chris --- In , "Jack Schoof" <jschoof@n...> wrote: > I just looked at the source code. Luckily I added this at the last minute > to support 8 bits with parity before the original release of the BX24. > > The manual does not reflect this and we will change the manual. > > We do throw away the parity bit, so you would have no idea if the parity was > correct, so technically the manual is still correct. > > Happy wandering! Now you will know where the BX24 is at all times. > > Jack > -----Original Message----- > From: cmoler@m... <cmoler@m...> > To: <> > Date: Monday, August 14, 2000 11:28 AM > Subject: [BasicX] Com3 parameters > >Group: > > > >I have a Trimble SK8-II GPS receiver that I've been using with my > >BX24. The default com parameters for the GPS are 9600 8-O-1, which I > >tried changing to 9600 8-N-1 with my PC with no luck. In a moment of > >weakness, I set up COM3 on the BX24 with the following parameter mask: > > > >bx0010_1000 (non-inverted, odd parity, 8 data bits) > > > >Voila! I'm talking to the GPS. Seems wonderful, until I look up > >DefineCom3() (page 31), where it says that "Parity is not supported > >for 8-bit data." Am I inviting something terrible here? Are the > >gods of the BasicX going to smite my chip down for not properly > >reading the manuals? > > > >Seriously, has anyone else tried this? When NetMedia says that > >parity is "Not supported," does that just mean untested, or actually > >incapable of operating under these conditions? Why am I able to use > >parity and 8 data bits if the hardware is not designed to work this > >way? > > > >Any info is appreciated. > > > >Thanks > >Chris > > > > > > > > > > > > |
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