S32K144 Signal Generator

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S32K144 Signal Generator

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RV777
Contributor I

Hello. I'm new into all of this and wanted to ask some questions.
I need to create Signal Generator right now, the signal has to be from any GPIO pin.
I'm using: 
S32DS
S32K144EVB board: https://www.nxp.com/document/guide/get-started-with-the-s32k144evb:NGS-S32K144EVB

So my idea was to:
- create new application project where I drag functions from components of my project,

- I chose CLOCK_DRV_Init(&clockMan1_InitConfig0); to initialize the clock,

- PINS_DRV_Init(PTA, g_pin_mux_InitConfigArr); - initialize PTA registers from where I will use J2-16 PTA14 GPIO pin,
- then I somehow need to set them to output I guess (because the signal will be generated from the board to outside of it),

- the signal has to be ~1000Mhz so I need to choose the right functions to make the signal with this kind of frequency,

- to read the value (and check if this works) I will use the example with ftm_signal_measurement_s32k144 example.

Any help would be appreciated.
Have a good programming time

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5 Replies

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Robin_Shen
NXP TechSupport
NXP TechSupport

Hi RV777,

I am sorry to tell you that the S32K1x is not able to generate 1000MHz signal, it's out of the specification "5.6 AC electrical specifications at 5 V range" of S32K1xx MCU Family - Data Sheet

5.6 AC electrical specifications at 5 V range.png

By the way, oc_pal_s32k144 is able to generate signal too. You don't need to toggle GPIO by software.

Best Regards,
Robin
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965 Views
RV777
Contributor I

The thing is, I am using 12V.

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963 Views
Robin_Shen
NXP TechSupport
NXP TechSupport

Yes, the board can be powered by 12V through J16, but the power supply voltage range of S32K144 can only be 2.7-5.5v.

Table 3. Voltage and current operating requirements for S32K1xx series.png

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947 Views
RV777
Contributor I

So could you help me generating any signal from GPIO?
By that I mean giving some ideas or steps I have to provide in order to make my program work. 
Thank you for your advice

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944 Views
Robin_Shen
NXP TechSupport
NXP TechSupport

You don't need to toggle GPIO by software. oc_pal_s32k144 is able to generate signal. The signal is output from a pin too. 

But S32K144 can not output such high(1000MHz) frequency signal. So You may need to change the MCU.

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