i.MX ProcessorsのトピックRe: IMX 6 LCD controller, SSD1322, 8080mode

IMX 6 LCD controller, SSD1322, 8080mode

alvenwu — Tue, 04 Dec 2018 09:00:40 GMT

HI I am using arm cortex A7 chip , which can be running in 8080 mode to connect to the SSD 1322 oled controller.

1.However , I am confusing about the hardware connection with the SSD1322 controller.

Do we need to use GPIO to control the CS , RS , WR ,RD signals ? or just configure the LCD controller to transfer data in 8080 mode ?

2. and I saw a "run" bit in CTRL register , does it mean every time data transfer , we should set it to '1' to start the transfer ?

3. how to configure the display time cycle? just enable the clock ?

thanks.

Re: IMX 6 LCD controller, SSD1322, 8080mode

igorpadykov — Tue, 04 Dec 2018 23:42:20 GMT

Hi Alven

processors with eLCDIF, like i.MX7D or i.MX6UL supports 8080 mode

https://community.nxp.com/docs/DOC-331754

Detailed description can be found in eLCDIF Chapter of Reference Manual of used processor.

Best regards
igor
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Re: IMX 6 LCD controller, SSD1322, 8080mode

alvenwu — Wed, 05 Dec 2018 01:58:36 GMT

HI Actually , I try to use it on FreeRTOS platform. However , it seems to be used in Linux . After going through the document , I still can not understand these bits' meaning . Could anyone explain for that ?

Re: IMX 6 LCD controller, SSD1322, 8080mode

igorpadykov — Wed, 05 Dec 2018 05:24:38 GMT

eLCDIF register descriptions can be found in documentation, for example

Chapter 32 Enhanced LCD Interface (eLCDIF) i.MX6UL Reference Manual

http://www.nxp.com/docs/en/reference-manual/IMX6ULRM.pdf

Best regards
igor

Re: IMX 6 LCD controller, SSD1322, 8080mode

alvenwu — Thu, 06 Dec 2018 22:57:55 GMT

Hi igor,

thanks for your support.

However , the reference manual doesnot describes clearly how to configure LCD controller into 8080mode to communicate with oled mode.

could you give me some sample code ? how to configure the display clock ? should we use the 'run' bit in CTRL register ? rather confused

Re: IMX 6 LCD controller, SSD1322, 8080mode

alvenwu — Sat, 29 Dec 2018 06:51:04 GMT

HI Currenly , I am using the LCD controller to connect to the OLE SSD1322 to display something.

Seems the simple commands like display on/off work well , but when it comes to the command+ data pairs , it doesn't work at all. nothing could display except the raw display screen.

Could anyone give some advice about that ?thanks.