Search found 24 matches

by KG7PAR
Tue Aug 20, 2019 10:37 pm
Forum: Pi-Star General Support
Topic: (RPI) Changing the tty to an external device and validating functionality
Replies: 41
Views: 2296

Re: (RPI) Changing the tty to an external device and validating functionality

I can use typical serial tools/commands to setup the port so that part should be simple enough, I think its 9600 8n1 by default. I may have an issue with the 115200 due to clock selection (higher than ideal error rates), but that will be addressed in the next version of the board. Is there a way to ...
by KG7PAR
Tue Aug 20, 2019 2:11 pm
Forum: Pi-Star General Support
Topic: (RPI) Changing the tty to an external device and validating functionality
Replies: 41
Views: 2296

Re: (RPI) Changing the tty to an external device and validating functionality

Hmm, it definitely is the right driver for my hardware as I am talking to my gps unit through it on port ttySC1. Thry disappear when i remove the overlay. Perhaps the SCx is assigned for any expansion uarts? Not sure why the 3B+ would enumerate that way otherwise, or what chip would be doing it that...
by KG7PAR
Tue Aug 20, 2019 12:28 am
Forum: Pi-Star General Support
Topic: (RPI) Changing the tty to an external device and validating functionality
Replies: 41
Views: 2296

Re: (RPI) Changing the tty to an external device and validating functionality

I think I over explained it. The pi talks i2c to the chip I have added. This part is all good, the I2c device driver loads properly and creates 2 new uart devices in the system, specifically /dev/ttySC0 and /dev/ttySC1. Again this part is fully tested and working. I now need the mmdvm software to us...
by KG7PAR
Mon Aug 19, 2019 5:59 pm
Forum: Pi-Star General Support
Topic: (RPI) Changing the tty to an external device and validating functionality
Replies: 41
Views: 2296

(RPI) Changing the tty to an external device and validating functionality

Greetings Gurus, I have designed up my own board to integrate several pieces of hardware, and I am wanting to leave the native UARTs on the rpi available for other expansions, hats, etc. In this train of thought, I elected to add in an I2C to dual uart (SC16IS752) which is shared with my GPS unit. T...