topic KL25Z - Wakeup using TSI in Kinetis Microcontrollers

KL25Z - Wakeup using TSI

javervalino — Wed, 02 Apr 2014 03:09:51 GMT

Hi All,

Good day!

I'm currently using frdm-kl25z board. I was able to test the sample program for touchpad using TSS. In this example, the board will go to sleep mode after several second when no touch is detected.

You can wake-up the board by touching the right electrode. My question is that, is there a way to wakeup the board by touching any of the 2 (left or right) electrodes?

Thanks in advance.

Re: KL25Z - Wakeup using TSI

Paul_Tian — Fri, 04 Apr 2014 09:01:34 GMT

Hi, Javer

Would you please tell me which sample project you use?

Best Regards

Paul

Re: KL25Z - Wakeup using TSI

javervalino — Sat, 05 Apr 2014 12:06:08 GMT

Hi Zhe,

I use the provided sourcode by xtrinsic from this link "TSS: Xtrinsic Touch-Sensing Software". Mine is located in this directory "C:\Freescale\Freescale_TSS_3_1\examples\FRDMKLXX_DEMO".

I hope there's a work around for this. :smileyhappy:

Thank you and best regards,

Javer

Re: KL25Z - Wakeup using TSI

vicentegomez — Fri, 09 May 2014 17:33:34 GMT

Hi Javer

On the kinetis L you can only scan channel by channel, this is defined by TSI_DATA[TSICH] , when the MCU goes to low power, the value that is on TSI_DATA[TSICH] is the only channel that can wake up the device.

Unfortunately there is not possible use two different electrodes to wake up the MCU on Kinetis L

Vicente

Re: KL25Z - Wakeup using TSI

javervalino — Tue, 10 Jun 2014 05:46:11 GMT

Hello Pedro,

Can you give an example how to wake-up using tss in processor expert?

Thanks in advance..