About Tms570 FlexRay

Hi user4257646,

Sorry I am having a hard time understanding the questions.  

user4527646 said:

I download on the official community on FlexRay routines, it is that there are five nodes ABCDE routine chip

I don't know what example you are referring to.  

user4527646 said:

I used two nodes, nodeA andnode B ,

What does your hardware setup consist of?

sorry  Seely, Forgive my poor English,My English is not well .

i download the example code in TI WIKI.

1:

i download the  FlexRay_Communication_CCSv5.zip   in here :http://wiki.tiprocessors.com/index.php/TMS570_MDK_Kit

there have five FlexRay Node Code in this packet:

Antares_FlexRay_CCSv5_example_code_nodeA,

Antares_FlexRay_CCSv5_example_code_nodeB

....

Antares_FlexRay_CCSv5_example_code_nodeE

  i use the FlexRay Node A and Node B.

I dont know how to send Data from Node A to Node B or Recive Data from other FlexRay Node .

 when i run the Code of Node A and Node B, i fine the code aways stay here :

Fray_PST-> SIR_UN.SIR_UL = 0xFFFFFFFF; // clear all status int flags.
->>> while ((Fray_PST-> SIR_UN.SIR_UL & 0x4) == 0x0); // wait for CYCS interrupt flag
 Fray_PST-> SIR_UN.SIR_UL = 0xFFFFFFFF; // clear all status int flags.

i chick the SIR register  value is 0x00000000 I dont konw that`s why ...

2:

My hardware include

MCU:TMS570ls3137

FlexRay drive :TJA1082

 Thank you !

Hi

That helps quite a lot. The demo you pointed to is for a different device and different board.
There does seem to be a demo for the TMS570LS3137 on this page:
processors.wiki.ti.com/.../TMS570LS31x_HDK_Kit

So you might want to start with that demo. The two parts are pretty compatible but maybe it's some slight difference that is causing you trouble.

Ok aside from that the first thing I always question is whether the network is setup correctly.

Not sure if you are using one of our HDK boards or Launchpads ... neither of which have FlexRay transceivers, or your own board. But in any case the transceiver in my mind is a big ? because it has to be hooked up correctly and maybe something is going wrong, there is a board you can check your schematic against here: processors.wiki.ti.com/.../HDK_FlexrayCanLin_Daughter_Crad.zip

Then if it looks good here you should check what the signals on the network look like.
Do you have the right kind of cabling and termination for example.
This page might be useful: www.ni.com/.../

I'd also want to get a capture of some of the waveforms on the bus lines just to make sure it all looks good.

Because if messages are not getting across it would explain why polling might be stuck waiting for something that doesn't happen.

If you get through all these things and no problems found I'd say then we need to ask QJ Wang for some inputs - as he authored these demos.

Hi,

Attached is code modified for 2 nodes.

Regards,

QJ

7024.FlexRay_2Nodes.zip

Hi  

Im sorry reply so late.

now i know the problem why i can't recive any date from other Node ,because the flexray drive  TJA1082 is broken .

now i met a new problem , i hope you can help me.

in function

 transmit_check_node_b(FRAY_ST *Fray_PST)

{

bc *write_buffer=&Fr_LSdu1;
bc *read_buffer=&Fr_LSdu2;
unsigned int ndat1;
int error=0;
write_buffer->ibrh = 0; // input buffer number
write_buffer->stxrh= 1; // set transmission request
write_buffer->ldsh = 1; // load data section
write_buffer->lhsh = 0; // load header section
write_buffer->ibsys = 0; // check for input buffer busy shadow
write_buffer->ibsyh = 1; // check for input buffer busy host

// wait for cycle start interrupt flag
Fray_PST->SIR_UN.SIR_UL = 0xFFFFFFFF; // clear all status int. flags
while ((Fray_PST->SIR_UN.SIR_UL & 0x4) == 0x0); // wait for CYCS interrupt flag
Fray_PST->SIR_UN.SIR_UL = 0xFFFFFFFF; // clear all status int. flags

// write payload for buffers
// buffer #2
(Fray_PST->WRDS[0] = 0x12345678); // Data 1
(Fray_PST->WRDS[1] = 0x87654321); // Data 2
Fr_TransmitTxLPdu(Fray_PST, write_buffer);

// buffer #10
write_buffer->ibrh = 10;
(Fray_PST->WRDS[0] = 0xFF); // Data 1
(Fray_PST->WRDS[1] = 0xFFFF); // Data 2
(Fray_PST->WRDS[2] = 0xFFFFFF); // Data 3
(Fray_PST->WRDS[3] = 0xFFFFFFFF); // Data 4
(Fray_PST->WRDS[4] = 0xFFFFFF00); // Data 5
(Fray_PST->WRDS[5] = 0xFFFF0000); // Data 6
Fr_TransmitTxLPdu(Fray_PST, write_buffer);

.........

};

why in Node A I am only able to receive WRDS[0]  and WRDS[1], if  i shield the line of

 write_buffer->ibrh = 10; and keep  write_buffer->ibrh = 0, I am only able to receive WRDS[0]  to  WRDS[3],

when i check the WRDS[4] and WRDS[x] (x>4),and i find WRDS[4]  Value is a Increasing number every time ,

and WRDS[x](x>4) value is 0x00, why

// check if a message is received in buffer 2 from node A

if ((ndat1 & 0x2) != 0)
{
read_buffer->obrs=1; // output buffer number
read_buffer->rdss=1; // read data section
read_buffer->rhss=0; // read header section
// Transfer message buffer 1 data to output buffer registers
Fr_ReceiveRxLPdu(Fray_PST, read_buffer);
if (Fray_PST->RDDS[1] != 0x000000FF) error++;
return error;
}

why ndat1 & 0x2 if recive the data from Node A?

thank you !

if ((ndat1 & 0x2) != 0) is used to check buffer2. The payload for buffer2 is 18 bytes. Only data in buffer2 are transfered to RDDS from FR RAM.

Regards,
QJ

HI QJ:

Thx for your reply, 

In addition to your FlexRay_2Nodes.zip file I am not able to import CCS.

This display:

See details below.
Error: A project with the name 'TMS570_FlexRay_example_nodeB' already exists in the workspace!

and I don't really understand what you mean

(if ((ndat1 & 0x2) != 0) is used to check buffer2. The payload for buffer2 is 18 bytes. Only data in buffer2 are transfered to RDDS from FR RAM.),

I try to change the PL to big , the code will run is not normal,  BP and  BM has no waveform, and I do not receive any data.

if I want to send and receive a lot of data, how should I change your code?

In the attachment, there is my Chinese question expression.

thank you!.7510.appendix .docx

HI QJ;
I have same problem as user4527646. How should i send or recive large data in your code ?

looking for your quick reply . thx.