Difference between revisions of "BELK-AN-004: Interfacing BoraEVB/BoraXEVB to TFT LCD display"
(Created page with "= AN-BELK-005: Interfacing BoraEVB to TFT LCD display= ==Introduction== This application note describes the interfacing of Ampire AM-800480STMQW-TA1 display to BoraEVB. This p...") |
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| − | = | + | ==History= |
| + | {| class="wikitable" border="1" | ||
| + | !Version | ||
| + | !Date | ||
| + | !BELK version | ||
| + | !Notes | ||
| + | |- | ||
| + | |1.0.0 | ||
| + | | | ||
| + | |[[Bora_Embedded_Linux_Kit_(BELK)#BELK_software_components|2.2.0]] | ||
| + | |First release | ||
| + | |- | ||
| + | |} | ||
==Introduction== | ==Introduction== | ||
This application note describes the interfacing of Ampire AM-800480STMQW-TA1 display to BoraEVB. This project is based on [[Bora_Embedded_Linux_Kit_%28BELK%29#BELK_software_components|BELK 2.2.0]]. | This application note describes the interfacing of Ampire AM-800480STMQW-TA1 display to BoraEVB. This project is based on [[Bora_Embedded_Linux_Kit_%28BELK%29#BELK_software_components|BELK 2.2.0]]. | ||
| Line 6: | Line 18: | ||
At this URL TBD schematics are available for download. | At this URL TBD schematics are available for download. | ||
| − | ==Block diagram== | + | ==Block diagram and Vivado design== |
| − | The following picture shows simplified block diagram of the design. To implement frame buffer, a portion of main SDRAM | + | The following picture shows simplified block diagram of the design. |
| + | TBD | ||
| + | LCD is driven by a controller implemented in PL that fetches pixel data from frame buffer and periodically refreshes physical screen. LCD controller provides configuration registers that are mapped in the following address range: | ||
| + | TBD | ||
| + | |||
| + | To implement frame buffer, a portion of main SDRAM is used. This area is allocated at runtime by linux frame buffer driver. | ||
| + | |||
| + | At the following URL the Vivado design is available for download: TBD. | ||
==Enabling frame buffer driver in linux kernel== | ==Enabling frame buffer driver in linux kernel== | ||
| + | To enable frame buffer driver TBD | ||
| + | |||
| + | Once the kernel has completed boot, frame buffer can be accessed from user space applications via <code>/dev/fb0</code> device file (for more details please refer to https://www.kernel.org/doc/Documentation/fb/framebuffer.txt). | ||
| + | The following image shows Qt 4.??? demo application running on top of it. | ||
| + | TBD | ||
Revision as of 10:38, 1 September 2015
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Contents
=History[edit | edit source]
| Version | Date | BELK version | Notes |
|---|---|---|---|
| 1.0.0 | 2.2.0 | First release |
Introduction[edit | edit source]
This application note describes the interfacing of Ampire AM-800480STMQW-TA1 display to BoraEVB. This project is based on BELK 2.2.0.
Physical interfacing[edit | edit source]
To interface the display a small adapter board is needed. It interfaces J22 connector on BoraEVB side and provides a 20-pin connector to directly attach display cable. It is also equipped with a linear regulator generating 2.5V. This voltage is used as power supply for the VDDIO_BANK13 rail. This voltage is required to implement LVDS differential pairs that drive display.
At this URL TBD schematics are available for download.
Block diagram and Vivado design[edit | edit source]
The following picture shows simplified block diagram of the design. TBD LCD is driven by a controller implemented in PL that fetches pixel data from frame buffer and periodically refreshes physical screen. LCD controller provides configuration registers that are mapped in the following address range: TBD
To implement frame buffer, a portion of main SDRAM is used. This area is allocated at runtime by linux frame buffer driver.
At the following URL the Vivado design is available for download: TBD.
Enabling frame buffer driver in linux kernel[edit | edit source]
To enable frame buffer driver TBD
Once the kernel has completed boot, frame buffer can be accessed from user space applications via /dev/fb0 device file (for more details please refer to https://www.kernel.org/doc/Documentation/fb/framebuffer.txt).
The following image shows Qt 4.??? demo application running on top of it.
TBD
