08M / 14M 9600 bps

[ciseco]

Hi,

I'm expecting the answer to be a distinct no, but is there any way of getting the 08m/14m to do 9600 bps comms? I'm currently running at 4800 by changing to setfreq m8, just wondered if it could be pushed further.

Cheers

Miles
________
vaporizer affiliates

 

[kranenborg]

Hi Ciseco,

It can be done on both chips if you use SERTXD command at 8MHz instead of using SEROUT, because SERTXD works at 4800 baud at 4 MHz (see also the manual). This solution is thus available, but on only one pin

/Jurjen

 

[ciseco]

Hi, is that 2 way or just out?

Cheers

Miles
________
vapor *****

 

[kranenborg]

Just out (You need the SERRXD to do input at these speeds, an that is only available on 20M and X1/X2 parts)

Note that the X and X1/X2 parts support SERIN/SEROUT at 9600 Baud with 8 MHz.

/Jurjen

 

[hippy]

The 14M supports 4800 baud for SERIN / SEROUT so using SETFREQ M8 will allow two 14M's to communicate bi-directionally at 9600, and one-way from 08M (SERTXD) to 14M. The user manual is out of date when it says 4800 baud is only available on X-parts.

Also, although it's not documented in the manual, the 14M appears to support SERRXD. The compiler accepts it but I've no idea if it works.