M-H wrote: > I have to learn more on SPI too but looking at 'this' > (https://pinout.xyz/pinout/spi) the BMC 7/8 are for SPI0 and there is > a full second set. > It looks like a chipselect, where 2 slaves can co-exist on the same > serial bus, and the SC directs which one is addressed. > The 1 you have set might be the address on the SPI0. > > But also I'm a bit out of my depth here. And if I am right on the > chipselect, technically it could double up to 4? displays ? > Perhaps the HW guru's of squeezeamp wil pass by and have some ideas on > this.
I found 'this really useful post' (https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=193722&p=1215277&sid=785398ff8e58e8bd6559d9b19fcf4184#p1217930) on how to get two displays working. Yes, you're right, SPI0 has two ports, spi0.0 and spi0.1, which can be selected with BCM8 and 7 respectively. Apparently you can simply make all the other pins the same (in parallel), but change the CS pin. But it seems that 'modprobe fbtft_device' can't make more than one framebuffer. Apparently second SPI bus, SPI1, is not enabled by default, but can be enabled by an overlay. Even then, you have to do something different to get a framebuffer on SPI1. It's all explained in that post, with nice links to the original source material, but I'm not going to go down that particular rabbit hole! M-H wrote: > I just reread your older justboom tinyamp posts. How does this pirate > audio 3w board compare to that amp on 5 volts ? ( use the same speakers > to make it an honest compare ) > I can't do that comparison I'm afraid - the Justboom amp went into someone else's house, and is driving ceiling speakers. The Pirate Audio board drives my old pair of Tannoy 613s rather well. As with any amp I've used them with though, they're a bit 'flat' (audiophiles like that apparently!), but I prefer more top and bass, and I don't think the Pirate Audio boards support ALSA equalisation - I could be wrong. ------------------------------------------------------------------------ chill's Profile: http://forums.slimdevices.com/member.php?userid=10839 View this thread: http://forums.slimdevices.com/showthread.php?t=111502 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
