Mark,
On Wednesday, July 16, 2014 8:42:31 AM UTC-5, Mark A. Yoder wrote: > > It works! Thanks. Though the background on Boris is greenish. > > that is odd! we've not had any reports of that issue during our testing. it is possible that the SPI timing could be off giving you a slightly shifted color spectrum, or possible the display is damaged. please email [email protected] and we'll get another minidisplay cape out to you to test... > There is a typo on the wiki. The tar command produces a directory called > Minidisplay-example with a capital M. > > sorry about that, the elinux.org wiki automatically makes the first letter of file uploads a capital. the original file was not capital.... > I also had to run echo -10 > /sys/devices/bone_capemgr.*/slots before echo > BB-SPIDEV0 > /sys/devices/bone_capemgr.*/slots to disable a pwm that was in > conflict. > > had you previously loaded another device tree entry with PWM? > Thanks again... > > i did not get a chance yesterday to document it, but the header file for the boris image was generated using GIMP's export feature. it would be easy enough to add a parser to decode bmp or png files... Dave > --Mark > > > On Tuesday, July 15, 2014 2:45:23 PM UTC-4, Mark A. Yoder wrote: >> >> David: >> I'm looking forward to seeing your example. A simple working example >> goes a long to way to understanding the device. >> >> --Mark >> >> On Tuesday, July 15, 2014 1:22:50 PM UTC-4, David Anders wrote: >>> >>> Mark, >>> >>> the stock BB-SPIDEV0-00A0 device tree entry will enable the SPIDEV >>> device driver. once that is done, you can talk directly to the lcd from >>> userspace. we have a small C demo program that allows you to read an image >>> file and display it on the lcd. this should be easy enough to do from any >>> of the other scripting languages as well. i'll get that pushed to the wiki >>> page later today. >>> >>> there are a number of existing examples of people using similar lcd >>> panels with arduino and other dev boards: >>> >>> >>> http://engineersofthecorn.blogspot.com/2012/06/beaglebone-and-adafruit-18-spi-lcd.html >>> >>> http://blog.inbedded.net/blog/2013/06/02/beaglebone-black-and-lcd-equals-fun/ >>> >>> http://guy.carpenter.id.au/gaugette/2014/01/28/controlling-an-adafruit-spi-oled-with-a-beaglebone-black/ >>> >>> >>> Dave >>> >>> >>> On Tuesday, July 15, 2014 12:10:59 PM UTC-5, Mark A. Yoder wrote: >>>> >>>> David: >>>> Thanks for updating [1] so quickly. >>>> >>>> Do you have any out-if-the-box demos that show how to use the >>>> miniDisplay Cape? >>>> >>>> --Mark >>>> >>>> [1] http://elinux.org/CircuitCo:MiniDisplay_Cape >>>> >>>> On Tuesday, July 15, 2014 12:25:05 PM UTC-4, David Anders wrote: >>>>> >>>>> "Hopefully the developer will respond. " >>>>> >>>>> already did... >>>>> >>>> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
