FlexRay : Wake Up pattern

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FlexRay : Wake Up pattern

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Deepak1
Contributor IV

Hi,

I am using DEVKIT MPC5748G development Board and IDE is S32 DS for power architecture V2.1.

I can see the wake up patterns on the DSO but it looks sinusoidal (Refer Below image).

I set,

pWakeupPattern = 16

gdWakeupSymbolTxIdle = 180

pastedImage_10.png

I have connected DSO probes to Pin 1 of P2 connector and GND (J13 : Pin 11)

pastedImage_5.png

pastedImage_9.png

How to get the wake up pattern in actual pattern ?

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi Deepak,

this could be related to oscilloscope configuration. Do you have some better picture of the screen? That one is not readable.

Also FlexRay bus uses differential signaling, so it's better to measure both of them and subtract them. Measuring of single ended signal is possible too but it's not precise.

Regards,

Lukas

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