https://github.com/mavstuff/olimex-a20-som-buydisplay-gsl1680-touch
Connect Buydisplay gsl1680 touchscreen to Olimex A20-SOM board
https://github.com/mavstuff/olimex-a20-som-buydisplay-gsl1680-touch
Last synced: 4 months ago
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Connect Buydisplay gsl1680 touchscreen to Olimex A20-SOM board
- Host: GitHub
- URL: https://github.com/mavstuff/olimex-a20-som-buydisplay-gsl1680-touch
- Owner: mavstuff
- Created: 2023-11-09T16:39:55.000Z (over 1 year ago)
- Default Branch: master
- Last Pushed: 2023-11-09T17:23:37.000Z (over 1 year ago)
- Last Synced: 2024-12-27T01:24:49.900Z (6 months ago)
- Language: C
- Size: 23.4 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: readme.md
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README
This is a small manual on how to connect Buydisplay's 5 inch Touch Panel with GSL1680F controller to Olimex A20-SOM or A20-SOM-EVB board. If using A20-SOM -EVB board, one will need to reconnect 4 jumpers to enable I2C2 on LCD connector (see schematics).
1. Use Olimage guide (link below) to get acquainted with kernel building process:
https://github.com/OLIMEX/OLINUXINO/blob/master/DOCUMENTS/OLIMAGE/Olimage-guide.pdf
2. While building kernel, using the above guide, In Kernel Menuconfig, Select **Device drivers->Input device support->Touchscreens->Silead I2C Touchscreen - [Module]**
or, edit .config file and add the following line:
CONFIG_TOUCHSCREEN_SILEAD=m
**Do not select "compiled" or else it won't be able to find firmware!*
3. Build kernel as in the manual
I've used the following make command to build debs on Ubuntu
*(notice KDEB_COMPRESS=gzip to enable compatible compression for Debian)*
```sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bindeb-pkg LOCALVERSION=-olimex KDEB_PKGVERSION=$(make kernelversion)-$EXTRA_VER KDEB_COMPRESS=gzip DTC_FLAGS=-@```
4. Upload the kernel as in the above manual, reboot
5. run
```sudo olinuxino-display ```
and enable 5 inch LCD-OLinuXino-5 display with capacitive touchscreen via olinuxino-display
6. Clone this repository
```git clone https://github.com/mavstuff/olimex-a20-som-buydisplay-gsl1680-touch.git```
7. Compile & copy additional dts file
```dtc -O dtb -o som-i2c2-silead.dtbo som-i2c2-silead.dts```
```sudo cp som-i2c2-silead.dtbo /usr/lib/olinuxino-overlays/sun7i-a20```
8. next, add overlay to /boot/uEnv.txt:
```sudo nano /boot/uEnv.txt```
then add :
```/usr/lib/olinuxino-overlays/sun7i-a20/som-i2c2-silead.dtbo```
to the end of ```"fdtoverlays=..."``` line.
9. generate GSL1680 firmware from sources and copy to firmware folder:
```cd SileadFwGen/SileadFwGen```
```gcc SileadFwGen.c -o SileadFwGen```
```./SileadFwGen```
```sudo mkdir -p /usr/lib/firmware/silead```
```sudo cp -f gsl1680.fw /usr/lib/firmware/silead/gsl1680.fw```
May this small guide and tools be helpful to anybody struggling to connect gsl1680 touch panel to olimex a20-som board
(c) Artem Moroz, 2023, [email protected]