nigelmercier
RIP
- Joined
- 20 Jun 2007
- Messages
- 16,234
- Location
- Live in Kent, boat in Canary Islands
The delightful term for the latter being "bit banging"
NMEA port sharing
- Thread starter JimC
- Start date
JohnGC
Well-Known Member
The delightful term for the latter being "bit banging"
Or "bit bashing"
For YAPPing; there are PICs and AVRs with up to 8 hardware UARTS, one of these would be my choice rather than implementing a UART in software.
Just worth pointing out that the information in this thread relates to NEMA 0183. NEMA 2000 is multi-talker by design (for the same baud rate at least).
AngusMcDoon
Well-Known Member
Or "bit bashing"
For YAPPing; there are PICs and AVRs with up to 8 hardware UARTS, one of these would be my choice rather than implementing a UART in software.
It's not just a case of choosing a chip with 8 UARTS for a YAPP though. It has to be cheap, low electrical power for boat use, in a DIL package as YAPPs don't involve PCB design, and a free development environment. Cheap dev boards (i.e. less than £10) are also suitable candidate hardware. I'd be interested in any suggestions that meet those requirements. RPi not suitable for this type of application
JohnGC
Well-Known Member
It's not just a case of choosing a chip with 8 UARTS for a YAPP though. It has to be cheap, low electrical power for boat use, in a DIL package as YAPPs don't involve PCB design, and a free development environment. Cheap dev boards (i.e. less than £10) are also suitable candidate hardware. I'd be interested in any suggestions that meet those requirements. RPi not suitable for this type of application
New thread: "YAPP. Micro with 8 UARTs - suitable for a NEMA multiplex project."