TMS570LS3137: Questions about flexray configure

Can these two indicators be configured? How to configure it?

There are 2 nodes on the flexray network,we run the example code on demo board,but the code stopped at while ((Fray_PST->SIR_UN.SIR_UL & 0x4) == 0x0);    // wait for CYCS interrupt flag,we have used the TJA1080A as a FlexRay transceiver，And the coldstart is configured in the configure_initialize_node function.

Fr_ControllerInit(Fray_PST);
	// Initialize Interrupts
	Fray_PST->EIR_UN.EIR_UL       = 0xFFFFFFFF; // Clear Error Int.
	Fray_PST->SIR_UN.SIR_UL       = 0xFFFFFFFF; // Clear Status Int.
	Fray_PST->SILS_UN.SILS_UL     = 0x00000000; // all Status Int. to eray_int0
	Fray_PST->SIER_UN.SIER_UL     = 0xFFFFFFFF; // Disable all Status Int.
	Fray_PST->SIES_UN.SIES_UL     = 0x00000004; // Enable CYCSE Int.
	Fray_PST->ILE_UN.ILE_UL       = 0x00000002; // enable eray_int1

	Fr_AllowColdStart(Fray_PST);
}

Hi QJ Wang,

I want to know if a demo board needs two flexray transceivers,so if I use two demo boards as two nodes, I need four transceivers. Is my understanding right?

If you use both channel A and channel B, 2 transceivers on each board are required.

You don't have to use two channels for your test. If there are only two nodes, both nodes must be configured as coldstart nodes, and both nodes must be fault-free, and each start frame must be sync frame.

So I can use 2 demo boards with 2 transceivers to run the example code?Or even if I only use one channel for test, 2 demo boards still need 4 transceivers?We only have one daughter card with 2 transceivers,can two demo boards share 2 transceivers of this daughter card?

It depends on your application. You can single or dual channel. Each channel of each device requires one PHY transceiver. 

If only channel (for example channel A) is used, only one transceiver is needed for the node. This means two transceivers are needed for two nodes: 1 for node 1 channel A, another for channel A of node 2. 

The signal traces between MCU and PHY transceiver should be as short as possible. 

Is the example code configured with single channel or two channels?How to modify it?

How to use only one channel?I set Fr_LPduPtr->chb  = 0; Fr_LPduPtr->cha  = 1; ,but still stopped at while ((Fray_PST->SIR_UN.SIR_UL & 0x4) == 0x0); 

You are correct. To use channel A only,  Fr_LPduPtr->chb  = 0; Fr_LPduPtr->cha  = 1.

I am not sure what causes the problem. For two nodes cluster, both nodes must be fault-free. 

In addition to this line of code, is there anything else in the example code that needs to be modified?

no

Is channel A corresponding to flexray1 and channel B corresponding to flexray2?

The flexray has two channels: channel A, and channel B. To use channel A and channel B, two transceivers are needed, one for channel A and other for channel B.

I only use 2 nodes,how to modify these macros?

#define 	NODE_TOTAL			25			// <=31
#define		SYNC_NODE			2			// if change, need to change GTUC2, GTUC7 and MRC
#define		SYNC_MESG_BASE		0x200
#define		SYNC_MESG_LENG		0x5
#define		DATA_MESG_BASE		0x300
#define		DATA_MESG_LENG		0x8
#define		DATA_BUFF_BASE		32			// SYNC new data symbol all in NDAT1
											// DATA new data symbol all in NDAT2

I don't think you need to change the code. 

So I just need to change the node =1 and node=2 in the main.c,right?After running,will the led indicated by the nhet1(27) and (29) pin on the demo board flash?

yes, you are correct.

The RDHS1/2/3 registers are readable and writable in the reference manual,but I found that it was read-only on the demo board,Are these registers writable?

I found two C files on the forum about the FTU sample code,but I didn't find the header file,Can you provide a complete sample code?Thanks.

/*
 * ftu_node1.c
 *
 *  Created on: Oct 6, 2015
 *      Author: a0324020
 */


#include "fray.h"
#include "ftu.h"
#include "LED_Show.h"
#include "file_io.h"
#include "stdio.h"
#include "fray_node_config.h"
#include "sys_vim.h"

/*******************************************************************
 *
 *    DESCRIPTION: FlexRay Drivers
 *
 *******************************************************************/ 

#include <fray.h>
#include <fray_ram.h>
#include"LED_Show.h"
#include "sys_vim.h"