Hi,
First of all, it's such a good project! Thanks for sharing your work.
I was trying to utilize small 3.5 inch display connected via SPI bus using this awesome library https://github.com/juj/fbcp-ili9341 and basically it works but only sometimes when I run it from ssh session.
When I try to run in automatically from level of /etc/rc.local or from .profile it never runs.
Sometimes when it's started from terminal it works for 1-2 minutes and ends with reported errors like following
root@wifibroadcast(ro):~# DMA channel 0 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 1 has peripheral map 7 (is lite channel: 0, currently active: 1, current control block: 0xbce21020)
DMA channel 2 has peripheral map 13 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 3 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 4 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 5 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 6 has peripheral map 13 (is lite channel: 0, currently active: 1, current control block: (nil))
DMA channel 7 has peripheral map 6 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 8 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 9 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 10 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 11 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 12 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 13 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 14 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel collision! Some other program has submitted a DMA task to our DMA channel 1! (DMA task at unknown control block address 0xbce21020)
System is likely unstable now, rebooting is advised.
I was trying to switch overclocking off but it does not work. With standard rpi installation it works fine.
Any idea what may cause the problem.
Thank you in advance
Kris
Hi, First of all, it's such a good project! Thanks for sharing your work. I was trying to utilize small 3.5 inch display connected via SPI bus using this awesome library https://github.com/juj/fbcp-ili9341 and basically it works but only sometimes when I run it from ssh session. When I try to run in automatically from level of /etc/rc.local or from .profile it never runs. Sometimes when it's started from terminal it works for 1-2 minutes and ends with reported errors like following
I was trying to switch overclocking off but it does not work. With standard rpi installation it works fine. Any idea what may cause the problem. Thank you in advance Kris