2019-07-11, 05:08 PM
(2019-07-11, 06:11 AM)paulo.abdon@gmail.com Wrote:(2019-07-10, 05:32 PM)Sailoog Wrote:(2019-07-09, 05:53 AM)paulo.abdon@gmail.com Wrote:(2019-06-30, 10:41 AM)Sailoog Wrote: You can do that mod it is easy. We are sorry for that but no one expected that hardware change never did before on old Raspberry boards.
More changes than expected have to me made in openplotter 2 to make it work with Raspberry 4: moving nodejs from 8 to 10, xygrib, wifi access point, most opencpn plugins... but do not worry we will success and we will build the most robust, stable and documented openplotter version ever before.
RPI 4 now has many UARTs. Do you have plans to modify hardware and software to incorporate some (at least 4) RS422 and / or RS232 into a new version of Moitessier HAT? Or some new HAT that exposes these serial interfaces and that can be stacked with Moitessier. This would allow for more secure connections to the NMEA0183 interfaces and would facilitate installation and maintenance by dispensing cables, connections, and USB converters.
I do not find info about the new UARTs. Are they software or hardware ports? Do you have any link?
RPI 4 uses BCM2711 which has multiple UART and I2C interfaces, as described briefly at https://www.raspberrypi.org/documentatio.../README.md.
I've found some more details on how RPI 4 distributes these interfaces to the GPIO connector at https://www.raspberrypi.org/documentatio...minary.pdf.
I am not yet having a RPI 4 to do the tests, but I believe we now have a hardware that allows and deserves a HAT that implements at least 4 422/232 serial interfaces using best isolation and protection practices and simplifying NMEA183 connections.
Are you doing an incredible job with Moitessier for what was allowed for RPI 3. Are there any plans for a new version of Moitessier or a new stackable HAT that makes it easier to use these new RPI4 serial interfaces?
Thank you
Thanks Paulo,
After studying that info I can see that RPI4 has from ALT0 to ALT5 GPIO alternate functions.
ALT0 is used by all the old RPI models and ALT1 to ALT5 are available only in RPI4 so you are talking about redesign the moitessier hat and design new hardware only for RPI4?