topic Re: S32k144EVB中的UJA1169的报文唤醒功能 in S32K

the function of the wake-up-frame of uja1169TK in s32k144evb

zjgchenzhen — Wed, 20 May 2020 09:35:02 GMT

My wake-up-frame consists of ID and data.

The first problem is that I can't understand how to use the data function. the Fig1 is the data function's example in the datasheet, but I can't understand what is the Group and why only group 3 and group 5 match.

The second problem is that I have set the related register for wake-up-frame (CWE, CPNC, PNCOK, Std ID，no data so no DM), but when I test the wake-up-frame function, It is strange that all frames can wake up the UJA1169 (I am sure I let the UJA1169 be in stand by mode correctly). For example, the wake-up-frame is std ID 0x123 (PNDM = 0), so I set the ID register 29h to 0x8c, and the ID register 2Ah to 0x04，The ID MASK register (2Bh - 2Eh) are all 0x0, so only 0x123 can wake up the UJA1169 according to the datasheet. But when I test, it is strange that all frames can wake up the UJA1169. Can you help me analyze this problem?

Fig 1

Re: S32k144EVB中的UJA1169的报文唤醒功能

victorjimenez — Fri, 22 May 2020 23:20:08 GMT

Hello,

I hope you are doing well.

Could you please write your question in English, so that I can provide better support.

Best Regards,

Victor

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

zjgchenzhen — Mon, 01 Jun 2020 01:06:08 GMT

Hi Victor,

I have updated it to Engliash. Please check it.

Thank you,

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

victorjimenez — Wed, 03 Jun 2020 19:06:38 GMT

Hi Chen,

Thanks for translating the post! Regarding your questions please see my comments below.

The first problem

It only matches groups 3 and 5 because these are the groups that in both cases are set to 1. This comparison doesn't take into consideration de zeros.

The second problem

The SBCs are not my field of expertise, but I will redirect this thread to the corresponding team so they can assist you with this question.

Regards,

Victor

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

zjgchenzhen — Thu, 04 Jun 2020 02:10:34 GMT

The first problem

For example, if the ID is match, then the data mask is 0b0000 0011, so the received message data is 0b0000 0001 or 0b0000 0011 or 0b0000 0010 can wake up the SBC. Is my understanding right?

But I have tried this,always, all data can wake up the SBC.The following is my setting, Pls see it.

the other board send ID 0x123, data 0xc or 0x8 or 0x1 or 0x2 or 0x3, they all wake up the sbc from standby mode.

.......

The second problem

Ok，Thank you. Looking forward to Your help!

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

guoweisun — Thu, 04 Jun 2020 07:16:26 GMT

For selective wake-up please refer to AN1203 for more detail setting.

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

zjgchenzhen — Fri, 05 Jun 2020 02:13:48 GMT

Hi Sun，

I can't find the AN1203 in NXP Official website. Can you send me the website or the PDF?

Thank you!

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

guoweisun — Fri, 05 Jun 2020 06:26:21 GMT

Had send to you!

Re: the function of the wake-up-frame of uja1169TK in s32k144evb

zjgchenzhen — Fri, 05 Jun 2020 08:57:36 GMT

Thank you for your help. The problem is solved.