topic Re: Problem in sending array data using ld_send_message() function. in S32K

Problem in sending array data using ld_send_message() function.

pankajprasad100 — Fri, 25 Mar 2022 04:53:42 GMT

I am working on LIN based bootloader, in which I need to send large data which is store in an array.

When I send the data which is divided into 0x82 size of block then the first block is sent on the bus but remaining blocks are getting corrupted.

While debugging I checked the data which was send by us which is perfectly fine, but while getting the data on the LIN bus the data is modified expect the first block.

From the below images we can see that block sequence number is increasing and data which is in the array are perfectly placed.

From the LIN bus images we can see after the transmitting of block-0 the next block sequence number became -0x6d,0xe0,0x53 instead of 0x01,0x02,0x03

Any suggestion how to solve the issue would be highly appreciated.

Compiler-IAR

MCU-s32k116

LIN analyzer-PLIN

Re: Problem in sending array data using ld_send_message() function.

namnguyenviet — Tue, 29 Mar 2022 09:09:43 GMT

Hello,

Which software are you using? Is that the LIN-stack or any NXP SW product, or the SW that you have written by your own?

Best Regards,

Nam

Re: Problem in sending array data using ld_send_message() function.

pankajprasad100 — Tue, 29 Mar 2022 11:49:25 GMT

Hi,

I am using the LIN-stack, in which ld_send_message() is used.

Best Regards,

Pankaj

Re: Problem in sending array data using ld_send_message() function.

pankajprasad100 — Wed, 30 Mar 2022 06:05:56 GMT

hi,

While debugging I got to know that inside of ld_send_message(),has IF condition which checks the message status. If the status is not completed then the buffer gets corrupted.

So I written a condition for that, using the ld_tx_status() as show in the below image

After the implementation, Now the data is coming as expected, but up to block number-7

below are the images of the data on the bus.

After the 7th block, no data is transmitting on the bus.

Compiler-IAR

MCU-S32K116

LIN analyzer-Canoe

Regards,

Pankaj prasad

Re: Problem in sending array data using ld_send_message() function.

pankajprasad100 — Wed, 30 Mar 2022 11:42:46 GMT

Hi,

I solved the issue, due to ECU going into sleep condition it stops at the 7th block.

Regards,

Pankaj prasad