https://community.nxp.com/t5/i-MX-Processors/LCD-Display-contrast-gamma-adjustment/m-p/1361947#M182171 <P>Hi Thejas</P> <P>&nbsp;</P> <P>may be useful to look at unit test examples</P> <P><A href="https://source.codeaurora.org/external/imx/imx-test/tree/test/mxc_fb_test?h=lf-5.10.52_2.1.0" target="_blank">https://source.codeaurora.org/external/imx/imx-test/tree/test/mxc_fb_test?h=lf-5.10.52_2.1.0</A></P> <P>&nbsp;</P> <P>Best regards<BR />igor</P> Wed, 27 Oct 2021 00:16:15 GMT igorpadykov 2021-10-27T00:16:15Z https://community.nxp.com/t5/i-MX-Processors/LCD-Display-contrast-gamma-adjustment/m-p/1361692#M182158 <DIV>We have a 7 inch LCD display connected to our SOC (IMX6) and a QTE-based application is running on it (No X Window system).&nbsp;</DIV><DIV>Everything is fine but the LCD contrast is not that good. The colors need to be a little darker.&nbsp;</DIV><DIV>we have tried adjusting gamma using&nbsp;MXCFB_SET_GAMMA ioctl (the source code is attached) and were able to see some changes in the color. but the colors are distorted.&nbsp;</DIV><DIV>How to properly adjust the gamma/contrast of an LCD screen?&nbsp;</DIV><DIV>&nbsp;</DIV><DIV>any help is appreciated.&nbsp;</DIV><DIV>Thanks in advance.</DIV><DIV>&nbsp;</DIV> Tue, 26 Oct 2021 13:04:47 GMT https://community.nxp.com/t5/i-MX-Processors/LCD-Display-contrast-gamma-adjustment/m-p/1361692#M182158 slimSHA 2021-10-26T13:04:47Z https://community.nxp.com/t5/i-MX-Processors/LCD-Display-contrast-gamma-adjustment/m-p/1361947#M182171 <P>Hi Thejas</P> <P>&nbsp;</P> <P>may be useful to look at unit test examples</P> <P><A href="https://source.codeaurora.org/external/imx/imx-test/tree/test/mxc_fb_test?h=lf-5.10.52_2.1.0" target="_blank">https://source.codeaurora.org/external/imx/imx-test/tree/test/mxc_fb_test?h=lf-5.10.52_2.1.0</A></P> <P>&nbsp;</P> <P>Best regards<BR />igor</P> Wed, 27 Oct 2021 00:16:15 GMT https://community.nxp.com/t5/i-MX-Processors/LCD-Display-contrast-gamma-adjustment/m-p/1361947#M182171 igorpadykov 2021-10-27T00:16:15Z