I've hooked up an SC16IS752 dual UART to a Pi 2 Model B and it seems to be working when I run a simple python read and write program. However only when I disconnect the Interrupt line ?
Heres the overlay:
dtoverlay=sc16is752-i2c,int_pin=18,addr=0x48,xtal=1843200
I've also tried pin=23 and get the same result
When disconnected I can see there is no activity on the UART's interrupt line and the pin on the pi is low ??
So presumably as its working without the Interrupt connected its not needed, at least not for basic comms ? Do I have to do something to get it to use Interrupts is that what's wrong ?
Heres the overlay:
dtoverlay=sc16is752-i2c,int_pin=18,addr=0x48,xtal=1843200
I've also tried pin=23 and get the same result
When disconnected I can see there is no activity on the UART's interrupt line and the pin on the pi is low ??
So presumably as its working without the Interrupt connected its not needed, at least not for basic comms ? Do I have to do something to get it to use Interrupts is that what's wrong ?
Statistics: Posted by Chris35 — Tue Jan 28, 2025 8:19 pm — Replies 1 — Views 29