topic Re: Can I set a specific pixel to a RGB value? in i.MX Processors

Can I set a specific pixel to a RGB value?

scottwalter — Tue, 17 Jun 2014 20:16:21 GMT

Hey guys,

I'm developing an HDMI driver for the i.IMX6 board. This is my first time writing a driver so I'm a little new to this. I was looking for two specific features present in the HDMI configuration registers that I can't seem to find:

1. Can you set a specific pixel to be a certain RGB value?

- In the SDK code for the HDMI there's a nice way to force the entire screen to be one color but not an individual pixel.

2. Is there a way to disable/enable the backlight, turn on/off the screen via the HDMI config registers? Based on previous i.MX boards this was done by altering one simple register. Is it the same for i.MX6?

Thanks!

Re: Can I set a specific pixel to a RGB value?

joanxie — Wed, 25 Jun 2014 09:21:18 GMT

1. Can you set a specific pixel to be a certain RGB value?

> what specific pixel do you need to set? pls give me detailed case for check

2. Is there a way to disable/enable the backlight, turn on/off the screen via the HDMI config registers?

> via HDMI config register? no, hdmi config register couldn't control backlight. you can refer to the "imx6q_add_mxc_pwm_backlight" fucntion in the "arch\am\mach-mx6\board-m6q_sabresd.c". imx products have the familiar PWM module.

Re: Can I set a specific pixel to a RGB value?

scottwalter — Fri, 27 Jun 2014 13:27:54 GMT

what specific pixel do you need to set? pls give me detailed case for check

> For instance, I want to set pixel 250,59 to the RGB value 35,20,16 (totally random).