luismesas / gopi Goto Github PK

I notice that the python API is using a dirrecnt technique for multiple boards..

http://www.piface.org.uk/guides/Using_the_PiFace_Rack/Addressing_multiple_PiFace_Digitals/

Am just pointing this out for curiosity and no other reason

Can the examples be updated with the interrupts and event listener example..

tia

Pete

I have troubles reading the value of one of the 4 on board switches. Reading the Value returns the same value regardless of whether the switch is pressed or not.

value := pifaceDigital.Switches[1].Value

In cast that this is not a bug, please provide a short code snippet to demonstrate the usage of the switches. Thank you!

Am visiting this project again..

One snag is that the golang ideally really on pi needs a dist

The deb file for golang with raspian is well outta date

So am about to submit a patch to incude a basic "install" of go.. just a few paras and links to blog.

I am also looking at the

• py code from upstream piface/
• and an eye at the c code
• and an eye on this code..

So I can kinda see whats happening..
(indeed the same in three langs)

So am about to

• take the brave step of making the interups kinda work.. )can port py to golang but confused sometimes)
• make the docs more interlinkable

But main thing is.. Luis .. u there... so this can go upstream..
(or maybe add me as a contrib.. but promise not to mess with master.)

I need to interlink stuff though, which is why ideally I want access to setings so I can fre off builds and tests etc..

pedro

I notice here..

https://github.com/luismesas/goPi/blob/master/rpi.go

That the package url's are wrong..

should to "goPi" not "go-pi", is this intentional ?/

I'm a newbie to piface, and playing with the python API and curious about using golang instead.

I notice.. Interrumpts for PiFace are "EnableInterrupts() Not implemented"
https://github.com/luismesas/goPi/blob/master/piface/piface.go#L88

Is a technical reason that their not implementing, or does the code need writing ?

Am very interested in this area for creating a more "event based, multitasking" application which is not easy with python et al.

go run blink_piface.go

SIGILL: illegal instruction
PC=0x3559c

math.init·1()
/usr/lib/go/src/pkg/math/pow10.go:34 +0x28
math.init()
/usr/lib/go/src/pkg/math/unsafe.go:21 +0x70
fmt.init()
/usr/lib/go/src/pkg/fmt/scan.go:1164 +0x70
github.com/luismesas/goPi/spi.init()
/home/pi/gogo/src/github.com/luismesas/goPi/spi/spi.go:71 +0x78
main.init()
/home/pi/gogo/src/github.com/pedromorgan/goPi/examples/blink_piface/blink_piface.go:29 +0x74

goroutine 2 [runnable]:
created by runtime.main
/golang-1.0.2/src/pkg/runtime/proc.c:221

trap 0x6
error 0x0
oldmask 0x0
r0 0x502970
r1 0x0
r2 0x0
r3 0x2
r4 0x0
r5 0x0
r6 0x0
r7 0x0
r8 0x0
r9 0xf4c84
r10 0x1061e000
fp 0x502627
ip 0xcafebabe
sp 0xb6f66f54
lr 0x35b30
pc 0x3559c
cpsr 0x20000010
fault 0x0
exit status 2