S32KのトピックRe: S32K116 CAN RX for FIFO mode----data coverage

S32K116 CAN RX for FIFO mode----data coverage

jia_zw — Mon, 08 Apr 2019 02:41:02 GMT

Why is there still data coverage , use CAN RX for FIFO mode ??

The phenomenon is as follows:

send can a message every 100 ms

Re: S32K116 CAN RX for FIFO mode----data coverage

PetrS — Tue, 09 Apr 2019 06:26:55 GMT

Hi,

could you please describe the issue in more detail? How is the CAN used in your case?

What is data_temp array used for? Do you use any kind of demo example?

BR, Petr

Re: S32K116 CAN RX for FIFO mode----data coverage

jia_zw — Mon, 15 Apr 2019 01:36:13 GMT

hi Petr Stancik，

As follows：i want to develop CAN bootloader for update；

1. data_temp array is used for update PFlash data;

is from CAN interrupt

2. CAN FIFO mode config：

a. CAN init & CAN Filter config

I close CAN FD

b. start CAN recevie

c.intterupt

3. send CAN message

I send one CAN mesage every 100 ms through CAN tools,

but the data_temp array for recevie data is different form the data i send

Can you help me analyze the question ? thanks

Re: S32K116 CAN RX for FIFO mode----data coverage

jia_zw — Mon, 15 Apr 2019 06:52:29 GMT

hi，

for example：

Re: S32K116 CAN RX for FIFO mode----data coverage

PetrS — Mon, 15 Apr 2019 08:40:49 GMT

Hi,

it seems the received yellow marked bytes are the one from address 50h of the srec file.

This may point you lost some frames. Do you call CanStartRecv() fast enough so RXFIFO can be read out? Should be called each time callback is executed.

BR, Petr