Linux: Tslib installation

yuri exi

Intellectual 865 points

Tool/software: Linux

Hello All

My board is am335x-evm, SDK is sdk-02.00.00.11.

I try to porting tslib for touchscreen

I have one problem.

TI site : processors.wiki.ti.com/.../Tslib

1. download tslib

git clone github.com/.../tslib.git

2. compile

# apt-get install libtool
# ./autogen.sh
# ./configure --prefix=/usr/tslib --host=arm-linux-gnu
# make

I can't edit the file config.h (comment the line "#define malloc rpl_malloc" to avoid this option:"#define malloc rpl_malloc" -> "//#define malloc rpl_malloc")
There is no #define malloc rpl_malloc in config.h (I attached my config.h file)

# make install

# export TSLIB_FBDEVICE=/dev/fb0
# export TSLIB_TSDEVICE=/dev/input/touchscreen0
# export TSLIB_CONFFILE=/etc/ts.conf

3. tslib copy to target board (rootfs)

root@ubuntu:/usr/tslib# ls
bin etc include lib share
root@ubuntu:/usr/tslib# cp -R * /opt/work/trunk/BSP/AM335X/RootFileSystem/Rootfs/

4. run ts_calibrate

# ./ts_calibrate
./ts_calibrate: line 1: syntax error: unexpected word (expecting ")") <= this error message

What is causing that syntax error?

Is there a problem with how to install tslib?

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Hi,

Touchscreen support is included in the Linux Processor SDK. See processors.wiki.ti.com/.../Processor_SDK_Linux_ADC

0 yuri exi over 8 years ago in reply to Biser Gatchev-XID

Intellectual 865 points

Thanks for fast reply.

I am already using a 4 channel ADC.

However, there is a problem if you modify the dts further to use the touchscreen.

====================================
- Am335xx.dtsi
====================================

tscadc: tscadc@44e0d000 {
compatible = "ti,am3359-tscadc";
reg = <0x44e0d000 0x1000>;
interrupt-parent = <&intc>;
interrupts = <16>;
ti,hwmods = "adc_tsc";
status = "disabled";

tsc {
  compatible = "ti,am3359-tsc";
};
am335x_adc: adc {
  #io-channel-cells = <1>;
  compatible = "ti,am3359-adc";
};
};

====================================
- 4 channel ADC dts : no problem
====================================
&tscadc {
status = "okay";
clocks = <&adc_tsc_fck>;

adc {
  ti,adc-channels = <0 1 2 3>;
  io-channels = <&am335x_adc 0>, <&am335x_adc 1>, <&am335x_adc 2>, <&am335x_adc 3>;
  io-channel-names = "AIN0", "AIN1", "AIN2", "AIN3";
};
};

=================================================
- 4 channel ADC + 4 wire touchscreen dts: problem
=================================================
&tscadc {
status = "okay";
clocks = <&adc_tsc_fck>;

tsc {
  ti,wires = <4>;
  ti,x-plate-resistance = <200>;
  ti,coordinate-readouts = <5>;
  ti,wire-config = <0x00 0x11 0x22 0x33>;
  ti,charge-delay = <0x400>;
};

adc {
  ti,adc-channels = <0 1 2 3 4 5 6 7>;
  io-channels = <&am335x_adc 0>, <&am335x_adc 1>, <&am335x_adc 2>, <&am335x_adc 3>;
  io-channel-names = "AIN0", "AIN1", "AIN2", "AIN3";
};
};

Segment error occurs in my driver that I used without problems.

How can I use 4-wire touch ADC and general 4-channel ADC together?

Thanks a lot for your help.

0 yuri exi over 8 years ago in reply to Biser Gatchev-XID

Intellectual 865 points

I finished with your help
thank you very much

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Linux: Tslib installation