6 years, 5 months ago.

KL25Z DigitalOut True and False

Hello dear all, I have confuse Digital out signal number. Normally, "On = 1" "Off =0" But, FRDM-KL-25Z and FRDM-KL46Z digital out signal number is following.

"On = 0" "Off = 1"

I have very confuse this number. Normally On = 1 Off = 0. I think digital signal is ON 1 generally, 0 is OFF. Could you please change to this number?

Best regards, Kazu,

Question relating to:

The FRDM-KL25Z is an ultra-low-cost development platform for Kinetis L Series KL1x (KL14/15) and KL2x (KL24/25) MCUs built on ARM® Cortex™-M0+ processor. Features include easy access to MCU I/O, battery-ready, …

PS. This is Just LED only. I understand LED circuit.

posted by Kazu Zamasu 20 Jun 2014

Hi, that is exactly the point, leds are connected (tied) to Vcc over some pull up resistor and by port you need to ground it to make it shine (to turn it on) :)

posted by Pavel Sadek 20 Jun 2014

thank you for your reply. Yes, understand that explain, but this operation is not intuitive operation. Could you change or adding to "Platforms » FRDM-KL25Z https://mbed.org/platforms/KL25Z/ " information? I think friendly to customer information. Other on-board LED is On=1 Off=0.

posted by Kazu Zamasu 20 Jun 2014
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